Project Childhood Fun Almost finished just need Decals!

[90guy]

Well after watching all of these other projects on the forum I decided why not start my own. My first 3 wheeler I grew up riding was a couple of 77 ATC 90's. Well 90's are starting to become far and between I picked up 2 1974 90's. I have some nice plans for the one I am restoring:lol:. But it's all a matter of money and time. And as of right now I'm doing paint and getting it looking good. And when winter rolls around I'm doing the motor. I have been buying goodies here and there for this project from the forum members. And I have to say it this thing will be pretty awesome I will be posting pics when I receive my parts and keeping you guys updated. Here are a couple pics. One is what it looked like before I began. The other 2 are what I did today tore it all down and pushed it to the car wash up the street to degrease it. I'm on shift work so I work on it when I can. Next thing is Painting the frame!!154460154461154462

[STiForester]

If you need anything sandblasted or powder coated let me know. Looks like such a fun build

[muthey]

If you need parts let me know, I have a 90 that I am parting out and we aren't too far away from each other, I no longer have the headlight but I have the rest of it check out my barn find post. http://www.3wheelerworld.com/showthread.php/147745-my-new-barn-find

[90guy]

Sounds good guys! Well I just got off of night shift and went to bed. When I woke up it was like christmas morning with 2 boxes sitting outside my door with goodies!154750 Have a 110 crank a 105 big bore top end! mild ground cam! And dont forget the seat and the wheels! haha

[muthey]

like I said let me know if there is anything oem that you need I have everything but the headlight.

[90guy]

Well got my intake today! PK!154937

[trizilla]

Sounds good guys! Well I just got off of night shift and went to bed. When I woke up it was like christmas morning with 2 boxes sitting outside my door with goodies!154750 Have a 110 crank a 105 big bore top end! mild ground cam! And dont forget the seat and the wheels! haha


i love that old school seat cover. is the 110 crank from a points engine?

[90guy]

The crank is what I need and will work with my points lol

[90guy]

Can anyone tell me what head gasket this motor has trailprotrailpro I tear it down so I have the parts when I do? It's a 74 motor is the head gasket round or notched? Thanks

[hippyplz]

Hey, i think i know that intake. Glad to see it go into a build.

[JasonB]

very cool man! And that seat is pretty sweet, totally retro! sounds like youre really working on doing this build up right. My only suggestion is to powdercoat and not paint anything, paint is not a great option for anything that wont be sitting somewhere on a shelf lol otherwise great start! cant wait to see this thing after wards, I love the title btw

[shortline10]

Great thread , missed this one some how !
You do know you will have to bore your 90 cases to accept the 110 cylinder and use the 110 cylinder studs .
Also were did you find that seat ? Awesome !!!!!!
If you need hop up 90/110 parts let me know .

[90guy]

Thanks guys prob won't ride it to much. Do I have to put the studs In if its a 104cc cylinder? And got the seat cover from 90 crazy

[shortline10]

If your using a stock 105cc atc110 cylinder you will have to bore your cases and yes the cylinder is 3/8" longer than a 90 cylinder so you need the 110 longer cylinder studs .
90/110 motors look the same but are very different when it comes to the crank and cylinder .



Thanks guys prob won't ride it to much. Do I have to put the studs In if its a 104cc cylinder? And got the seat cover from 90 crazy

[90guy]

Hmm I'm going to have to post some close ups for you I was told I just needed the 110 crank for this cylinder

[shortline10]

Not so simple !
Lets see what you have and I can tell you what will need to happen LOL .

You were planning on using your stock 90 bottom end correct ?



Hmm I'm going to have to post some close ups for you I was told I just needed the 110 crank for this cylinder

[90guy]

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here are some pics if you need better let me know. Not so simple for sure! lol

[90guy]

When it comes to timing this motor. Is it going to be the same as factory? or do I need a 110 cam sprocket do to the 110 stroke?

[shortline10]

sprockets are the same but the timing chain is longer for the 110 .
When it comes to timing this motor. Is it going to be the same as factory? or do I need a 110 cam sprocket do to the 110 stroke?

[90guy]

Thanks shortline! exactly what im looking for! should have some progress pics up tomarrow new fenders tank and forks going on tomarrow.

[90guy]

Well finally gotten around to messing with it. Gotta wait till I go home to grab mounting brackets off of my fenders just beat to heck. But im getting pumped!Fenders and my tank look AWESOME! got them from 90crazy 157461157462

[hippyplz]

WOW!!! Those look great!

[90crazy]

Nice to see all those pieces come together! Gonna be a nice ride!

[90guy]

Sorry there has been no progress switched jobs and moneys been tight will get what I can get done.

[oscarmayer]

understandable sir, we all have been there.

[90guy]

Well if I have time this weekend I will be tearing the old motor down getting it ready for work! Lol get my head sent to shortline! And get my measurements on my cases to see how much I need bored off them! Working on getting a compressor so I can do some soda blasting on my cases. Oh and order gaskets and chain going to be a blast all excited again!! Looks so sad in the back corner lol

[90guy]

Received a basani or skywAy pipe from mr.clean cant wait to clean it up and get it ready! Ordered a micrometer and bore gauge set today to find out what I have for a cylinder! Tear down on the motor starts tomarrow. Just need to get some baggies to keep everything organized.

[90guy]

Well measured my bore of my cylinder which measure 56mm. If someone could give me hand figuring out the motor size. 56mm bore. standard honda atc 110 crank. Mild cam not certain duration.

[shortline10]

That will add up to 125cc



Well measured my bore of my cylinder which measure 56mm. If someone could give me hand figuring out the motor size. 56mm bore. standard honda atc 110 crank. Mild cam not certain duration.

[90guy]

164798
Motor and parts all packed up and ready for a trip to FL!

[90guy]

Also I was digging around when I was packing this package. And I have a full mikuni 22mm carb off my 73 LT3 would that be a good carb or should I go to 24mm?

[90guy]

Well since my motor is heading to shortlines for a build up. I just purchased a little bling for this motor when it comes back!
165330165331
My Pipe I got from Mr. Clean
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[90guy]

Well some bad news. Mike received the motor yesterday. And he opened it today and found out that they really did a number on the poor little guy. So now I am buying a 110 from him. And he is going to do the same work actually a little less now! I am soooo excited to get this! lol Here is a pic of some goodies Mike is putting it together with.165650

[HappyTrail]

You must feel like a kid at Christmas. No doubt this motor will be done right. Can't wait to see it come together. What wound up being the issue or issues with the first motor? I've opened up a couple cases here and there that have had me saying Wtf? :wondering Whenever I think I've seen it all.

[90guy]

Oh yeah most defiantly a kid at Christmas haha. No certain. Mike got the package and said there was oil all over the bottom and dents in the bottom where the motor had been dropped. No doubt there is something cracked. So I will just do a 110 lol don't have to find 110 studs or crack the cases and then bore them to fit the cylinder. Saves him some labor.

[M1A1]

Great post. Thanks 90guy. I needed some ideas. Just picked up an atc70 last week. 110 sounds great. Keep us posted. trike on brother.

[90guy]

Mike has sent me some new pictures! haha Love the pictures! This is my new power House he is going to be doing some work too. Also some clutch plates! haha He just keeps getting me more and more pumped up!165898165899

[90guy]

Well Shortline keeps taking advantage of me! haha no he's not just keeps sending me pictures of stuff he has and I keep wanting to buy it all! lol Now we have him putting a chrome clutch cover on it, Picking up a set of chrome 2 place forks from him, some rear spacers, and of course a Bapp Headlight with mounts to fit the forks. Just Can't seem to get enough of his collection!

[90guy]

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[90guy]

Well I have a problem on deciding lol I put the 2 place forks on without the fender and I don't know which ones I want to run with fender or without fender! Waiting for some paint to dry for my fender mounting brackets before I get some pics up! I am debating on Painting my turbos to match the body color? Any one wanna chime in? I can take a fender to hedahls and they say they can match it and put it into a Spray Can. But I am making progress and am pumped. Also not certain what I want to run for tires on this thing. I have been looking at old school race pics and they ran knobbys. So I am thinking of keeping them. Any advice our opinions are always taken into mind. Thanks!

[shortline10]

Tore into the motor this morning ...........
Wont be long now :)

[90guy]

Tore into the motor this morning ...........
Wont be long now :)
Uh oh!!! >:)

[90guy]

Well Shortline has started the motor and is keeping me up on pics!
166899166898166896166901166897166900 Looks like Mike had some issues getting the old alignment dowel out.166902

[90guy]

And Some more pictures that Mike just sent A clean head, And a looking good clutch side!166903166904

[90guy]

166915166916 Made some progress on it today. Forks Light fender brackets painted and on rubber fender mounts. Nice to have warmish weather again.

[90guy]

Well I just scored a heck of a deal and tides have changed no more factory frame. I scored a bandito frame on the bay for whopping $36 I am pumped even more! and also picked up a cancilla chain tensioner to go with it off there also.167097167098167094167096 167099167100

[shortline10]

Not a cancilla tensioner but a bandito brand tensioner great score !!!

[90guy]

Thanks for the correction! I'm just pumped to get this frame all set and get the motor back and see it start coming together :twisted:

[Vealmonkey]

Congrats on the great finds. Now this project will have the frame it deserves. Looking forward to seeing this all together.

[90guy]

Well since this is going to kind of be a race build replica what kind if tire should I run on it

[shortline10]

18"-20" on the rear .... I like the flat track look .



Well since this is going to kind of be a race build replica what kind if tire should I run on it

[90guy]

Ok what would I be looking for. Say tire wise what kind? Lol

[90guy]

Thinking of running these on the back.http://www.rockymountainatvmc.com/p/43/-/165/723/-/17494/Duro-HF245-Sport-ATV-Tire But then I don't know what would be ran on the front tire?

[90guy]

Well got news Motor's done!
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[hippyplz]

Looks great! What all did you end up having done?

[90guy]

Well lets see if I can find the list lol. Port & Polish to match the intake, rocky race cam, put my big bore cylinder on with new piston 56mm, high performance valve springs, new clutch with highperfomance springs, Chrome clutch cover, new cam chain, Dipstick Breather, oil seals.

[90guy]

Well Motor Showed up. And also my Frame also showed up! Progress will start being made with this! Did my wiring harness just to add some flash. Thinking my cables will also be done with this!167882167883167884

[90guy]

Well progress will be made soon! Have a carb and filter coming from sudco! Captain wheezy is sending my rear end! Getting pumped!

[Micahdogg]

This is a great thread. It was fun to see how this project snowballed $$$ along the way :) So often that is the case.

[90guy]

This is a great thread. It was fun to see how this project snowballed $$$ along the way :) So often that is the case.
Hahaha yeah I was going to keep it simple but so many great people on the forum with awesome prices didn't help me want to keep it stock! lol I was able to sweet talk the mechanics supervisor at work to see if I would be able to use the mechanics blast cabinet! Well this cabinet is huge fit the frame no problem. Got it all blasted including the exhaust. I primed it and put the first coat of paint on the exhaust. Have to wait for the rain to stop before I paint. Way to much moisture in the garage.

[90guy]

We'll got my frame sand blaster primed painted and cleared got the new bearings in the holder. Cleaned my axle up today. Our the carrier in was going to start making progress to realize I can't put the axle in because I don't have my sprocket yet... Stupid me!

[90guy]

Well my sprocket it sitting at the post office can't get it until Saturday due to the silly hours they are open here. Shock covers showed up today for my rear axle. And scored some sweet turbo on the bay a while back not in the nicest shape. But I had them sent to greg at Gkingpolishing. And I got a little teaser of what they look like. These are the legit PCCC not the bapp ones I have lol. :naughty:
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[90guy]

Today It's a rolling chassis until my brakes show up then the magic can happen!
173580

[Joseph Farrow]

Looking Good!

[90guy]

Made some progress this morning. Motor is installed. Painted coil brackets. Ran the wiring and wired everything but the coil. Installed the correct rear brake pads. Made the rear end solid. Cleaned up my chain tensioner. Installed the carb and air filter. Ran the cable not how I want to run it but its a little short. And also decided on my rear tires. have a Turbo in one to see how itll look. I am so excited!174279174280174281

[90guy]

Might be a week trailprotrailpro more progress is made. Found out my mom has breast cancer so ill be with her as she goes through surgery and stuff. Have contacted motion pro about some custom made cables for it can't wait to get it done!

[90guy]

Made some progress today. Sorry for the pics Its that time of day for my garage haha! I realized when I installed my foot begs they are bent way out of whack. So I need to find a set of nice straight pegs and I also broke my tank strap So I need to find a nice tank strap for it. But she is just about ready to be fired up,. I can't wait to hear this mean machine run!
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[shortline10]

Why cant you just straighten the bent peg ?
Remove the rubber and use a long piece of pipe slipped over the bent peg and bend away . 5 minuet fix .




Made some progress today. Sorry for the pics Its that time of day for my garage haha! I realized when I installed my foot begs they are bent way out of whack. So I need to find a set of nice straight pegs and I also broke my tank strap So I need to find a nice tank strap for it. But she is just about ready to be fired up,. I can't wait to hear this mean machine run!
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[90guy]

Haha Yeah, I would to that. But this set of pegs has seen better days. That side is welded on it. If I would find a pipe to fit I would probably snap the welds that someone used to put them back together. That old machine I parted out had defiantly seen better days. But I guess its better to give it a try and see what happens.

[shortline10]

The 79 and up atc110 pegs are a better choice if you buy a set , a lot stronger .



Haha Yeah, I would to that. But this set of pegs has seen better days. That side is welded on it. If I would find a pipe to fit I would probably snap the welds that someone used to put them back together. That old machine I parted out had defiantly seen better days. But I guess its better to give it a try and see what happens.

[shortline10]

Need to install the axle spacers , I like them with a big butt :lol:

[90guy]

sounds good thanks for that information! Haha I do to. I was wondering would I have to split the rims to drill them or can I just drill them when they are together?

[shortline10]

Defiantly drill them while their together .




sounds good thanks for that information! Haha I do to. I was wondering would I have to split the rims to drill them or can I just drill them when they are together?

[90guy]

Ok just wanted to make sure haha. I had a heck of a time getting those rims to seal up and stop leaking air. It looks kinda sad without that fat back end like your machines have! haha

[90guy]

This ones for you Mike, Just joined the Fat rear club! haha I love the looks of it! 176874176875

[shortline10]

How's that song go ???? Babys got "BACK" I like them round and "BIG"
"sirmixalot"

Any way looks much better :lol:

[lardog]

Looks Good, who makes those rear tires?

[90guy]

Looks Good, who makes those rear tires?

Thanks, I just went to the garage this morning and looked; deli tire is the tire brand. Model of tire is the s366

[C.J]

Thanks, I just went to the garage this morning and looked; deli tire is the tire brand. Model of tire is the s366

Finally we know!!!! I gotta get a set for my white bike. And little brothers bike. And blaster. Lol

[90guy]

Finally we know!!!! I gotta get a set for my white bike. And little brothers bike. And blaster. Lol
Bahaha! Didnt think you wanted to know that bad haha! My next build will prob support them again haha!

[90guy]

Well got over excited today at work. And just had to hear my baby run! lol I have now started to break the motor in!
http://www.youtube.com/watch?v=LVjq-c8n0cU

[RDH/86200X]

Looks good man and the video gave me some motivation to go do some more work on mine.

[90guy]

Little progress today while I wait for the yamabond to cure on the crankcase of the snowmobile I'm working on.
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[Joseph Farrow]

I like it!

[90guy]

I like it!
Thanks!! Getting a lot closer to done! Haha. I think I should have added color to the turbos. But I wanted to see what all polished looked like on it! It adds character that way!

[90guy]

Sitting here thinking today what I should do for decals on the tank. Input would be good! I like the 74 decal looks, but it's not a 74 anymore! haha. Trying to find pictures of old race machines to get ideas from!

[90guy]

Well some backwards progress this week! Pulled my 2 place rigid chrome forks off. Jason will be using them on his project! Excited to see it once he starts it! Have a set of suspended BAPP coming from him! Pumped up!179180

[90guy]

Just got the Front end I need to do a little adjusting on the forks in the trees and get some bolts to put the fender on. Started snowing today and I decided I didn't want to be outside lol. But This looks good and rides awesome! Really appreciate it Jason!
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[RDH/86200X]

Could you get some up close pics of the triples. I'm wanting to com pair them to mine. Looks good man.

[90guy]

Here are some poor but closer pics! lol Hope this helps.179306179307179308179309

[RDH/86200X]

Ok thanks mine are different. Your 90 looks great. How much snow are you looking at getting.

[90guy]

Well thanks guy! Umm... radio was saying <1" so who know what we end up with! lol

[Joseph Farrow]

Put your paddle tires on it and lets see it shredding some snow!

[C.J]

BAPP triples?

I still haven't found an EM EFFING front axle for mine! I'm so close to throwing a solid front on it. But I don't have the edging fork inserts either! I'm like, 2 things away from parting it out.

[90guy]

Well took it out today. It is a fun machine! 38 degrees out today. It was cutting in and out at the top end like it was to rich. So I will wait till next spring/summer to really jet it in. But it is fun none the less only thing left to do is get some decals so I can get my brace plate on and getting it looking good! Love this little guy and appreciate everyone who helped let me make this happen! 179615179616179617

[Joseph Farrow]

Turned out Great! Really like the axle boots.

[90guy]

Well no decals yet haha! But I did get a couple other trick parts for it Thanks Jeff, And Mike! Some steel foot peg grips. ATC INC brake drum. Some new handle bars and some old school foam grips. Will get pics of everything on. 184171 184172

[coolpool]

Looks like a fun project with all the unexpected events that happened along the way. Question on the rear axle and hubs, are you running the old 4 or five spline, three stud hubs designed for the balloon tires or the newer, four bolt fine spline hubs? I'm liking the look of you covers but aren't sure I can get away with them on my 73 US90 build with the older hubs. I also ordered a 110 motor from shortline, I pick it up in FL in three weeks ;-)

[rg97]

I hope you get the decals from Blue 27. His work is second to none.

[90guy]

Looks like a fun project with all the unexpected events that happened along the way. Question on the rear axle and hubs, are you running the old 4 or five spline, three stud hubs designed for the balloon tires or the newer, four bolt fine spline hubs? I'm liking the look of you covers but aren't sure I can get away with them on my 73 US90 build with the older hubs. I also ordered a 110 motor from shortline, I pick it up in FL in three weeks ;-)
Rocking a fine splined axle I picked up from the captain. Just decided it would be easier to find parts for with the fine splined axle and hubs. Would be interesting to see the covers on a 73. I remember reading that you where having a 125 built up from Mike. Sounds to be about the same motor as this one! I am excited to see that one come together! As for decals I have absolutely no idea what I want to do on the tank. Kinda bothers me.

[coolpool]

Thanks for the info 90guy! I'm going to see how they look on my build. Are they tight to the axle shaft? Time to get off my azz and start a build thread.

[90guy]

As for the boots they fit lossely on it. Wish they fit tight but what can you do haha!

[90crazy]

That looks awesome! Great job on that build. My suggestion is just for yourself to see if you like, slide the forks up in the clamps a few inches and see what you think.

[90guy]

That looks awesome! Great job on that build. My suggestion is just for yourself to see if you like, slide the forks up in the clamps a few inches and see what you think.
Yup don't have any really recent pics. I slid them up about 2 inches. World of diffrence in handling!

[90guy]

Just got a go pro yesterday will be learning how to use it haha. Just wanted to post a little ride of it. Defiantly not jetted for this weather. Also lost my muffler hanger... Sad day..... Couldn't figure out why it was backfiring a lot that explained it! Need to find another. Can't wait for summer!
http://www.youtube.com/watch?v=vEXuqiY9sIM

[Joseph Farrow]

As for the boots they fit lossely on it. Wish they fit tight but what can you do haha!

I used to use Zip Ties around the smaller end of the boot to hold them in place.

[90guy]

Well Been dinking around with it. Now I have a problem where I hold it wide open it will rev to a point and cut out kind of like a rev limiter. I tried to run the choke when it was doing this and no change. What could cause this? Running to rich? This thing start perfect. pull the choke 1 pull and running till I shut it off. Thanks

[shortline10]

Try a new spark plug and adjust the points and if that doesn't work lean the jetting a little and see if that clears it up . A weak spark will act like a rich condition ......

[90guy]

Thanks Mike, I was curious on that. Wasnt sure if spark would cause a condition like this. I will pick up a new pug tomorrow and try it again. Fingers are crossed as it just started doing this.

[DohcBikes]

Well Been dinking around with it. Now I have a problem where I hold it wide open it will rev to a point and cut out kind of like a rev limiter. I tried to run the choke when it was doing this and no change. What could cause this? Running to rich? This thing start perfect. pull the choke 1 pull and running till I shut it off. ThanksAs far as jetting goes,,,Cutting like a rev limiter at WFO ==...Lean main!! Or it is the spark as shortline said already...

The pilot is likely fine if it starts one pull.

[90guy]

Im going to try the plug and points. I was curious. Wouldnt opening the choke circuit up richen it up?

[Ol Deuce]

Dang Your Project looks so good!!!! Thanks for the ride little chilly but fun!!! Talk to ya soon Ol Deuce

[90guy]

Still playing around with the carb. Still a little boggy on the bottom. But its not cutting out like it did anymore. Here is a little video of how it sits now.
http://youtu.be/wOE2p74s2os

[Joseph Farrow]

Man all you need now is some Old School Pin Stripe and that thing will be Bitchin'

[Ol Deuce]

199722

Some of the "Old School" pin stripes were UGLY like this one LoL.........

[shortline10]

I would play around with the points timing , advance or retard it a little either way and see if that helps . Also are you using a short intake manifold ?

[90guy]

OK I'll adjust that a little. Yup still with the shorty. I remember you sating had problems with a shorty on yours.

[shortline10]

Yes the bottom end hick ups are easier to tune with a long manifold .
OK I'll adjust that a little. Yup still with the shorty. I remember you sating had problems with a shorty on yours.

[Jwheeler]

Nice looking trike Todd, Time to start another one.:naughty:

[90guy]

Haha! Starting to collect parts for another one haha. Just need to finish up this 300r I have!

[jays375]

Very cool!That is a sweet looking machine.

[MattDragontamer]

That is looking pretty sweet. The finals bits always seem to take for everrrr.... Or is it just me...lol

[muthey]

what's your next project going to be, I have one sitting here that I am losing interest in decently fast, next spring I might be more inclined to finish it, but not the rest of the summer.

[90guy]

Uh oh haha. Not sure yet. Need to finish up the 250r then see what I find and collect for trick parts. Lol didn't pick that 85r up that I had showed. Never made it there. Only way I can make it to the loinsback is with a dirtbike now Lol.