TRI-Z dirt dragger in the making

[trike moto]

picked up two tri-z's last week going to build a drag trike out of what i got some one started to build a drag trike out of one of thim they stretched the stock arm 8" it was lowerd with a strut in the rear it had a yz power valve cylinder on the tri-z bottom end with a internal rotor igntion I'm changing some of it i got a yz490 motor on it way here for the heart of this beast i also got a out of frame drag pipe for it i have got some tri- z motor parts im not going to need if any one is in need of them will sell cheep also answer pipe and silencer and 2 sets of rads here is a pic of of my z just mocking every thing up then i will tare it down for paint will post more pics later

[puggerton03]

Dibs on the pipe and silencer. PM sent.

[bigbadktm]

looks like a good start to a cool bike

[code200k]

Dibs on the pipe and silencer. PM sent.

damn you beat me too it!

[trike moto]

has any one lowerd tri-z fork internally I'm rebuilding my forks and want to lower them i have herd you can do it with pvc pipe also what weight oil and how much in each leg thanks!!

[Yamaha_Rules69]

Pvc pipe - I have done it, but in no way does it lower the forks. Pvc pipe is used to stiffen up the springs, much like a progressive spring would, to better resist bottoming out on larger jumps. Would it be effective to slide the forks up the tripple clamp, so you have say 4 inches or more sticking out the top? Just a thought. Good luck, and will be watching this build.

[trike moto]

no you can lower fork with pvc if you put it under the rod that bolt in the bottom i have done it on my street bike before and just did it to my z fork last night.
got my fuel tank mounted today it is a old mini bike tank i had laying around it is 1.5 gallon it fit nice under the top air box cover

[trike moto]

took the tri-z all apart to day to get ready for paint decided to remove all unnecessary brackets on frame that will not be using. still trying to find out fork oil specs (oil weight and amount)if any one can help?? can you still get radiator shrouds oem or after market?? thanks!!

[Tecate 50]

I use 15wt Bel-Ray in my Tecate! Not sure on the amount for a Tri-Z.....

[NOS_350X]

Yes you can lower the z fork internally. The cheap way remove the top spring.

The right way, take the top spring and put it on the underside of the rod. you must disassamble the whole fork for that.

[Bryan Raffa]

what year 490 motor? where did you find a out of frame drag pipe for a 490? hope its not for a tri z motor,,, the exhaust port is WAY larger. I took the top spring out of my shocks ,, and it worked just fine! slide the forks down the tripple also. and I used 10w belray when I was draggin. DC plastic has new shrouds!,,,

85 triz 10w/ 151mm/ or 334cc's
86 triz 10w/180mm/ or 418cc's

[trike moto]

87 490 motor the out of frame pipe came with the motor. the 490 was in a blaster frame at one time he had the pipe made for it but never finished the quad . It has a name stamped on it i will look at the pipe tomorrow and see what the name is. i lowerd my forks 2" inch internally by putting a 2" spacer under the rod in the bottom it works fine also stiffens them up some i am trying not to slide the fork down the triple to much i just don't like the look of the fork sticking up that much but will have to find out what works best with my set up. Raffa i will have a lot of questions for you along the way just hope you are willing to help out just reading some of your 490z posts have helped. Is your 490 motor dependable or a hand grenade like some yz490 owners are telling me?

[Cuztom Racing]

Im assuming your going to run 300ft? What times are you expecting?

[trike moto]

the track we race at is old school no timing system just a beam at the finish line that lites up a win lite they us a old stop lite as a christmas tree the track is in three rivers michigan it is the "old iron motorcycle club" they have been running it this way for 20 plus years from what i have been told . i was told the track is 400 foot they have 8-10 race's a year with a points system and money classes

[Bryan Raffa]

you will need to mount that motor,, and you will see where the kickstart hits the frame.. and make shure you get the head recut to cure the detonation.. and you will have to make a sparkplug wrench...

[trike moto]

plan on getting the head fixed before i ever fire this thing up still got a long way to go. Raffa did you just heat and bend the kicker to clear the frame? thank info on dc plastic!!

[Bryan Raffa]

no you have to grind the frame next to the swingarm cap.

[trike moto]

picked up 490 motor today got it mocked up in frame (i see where to grind to clear the kicker thanks raffa!!) test fit out of frame pipe to see if i have room to kick this thing it is close but will work fine now it is time to paint frame so this beast can come alive!!

[Bryan Raffa]

have you tryed changeing the spark plug yet?:D So who made the pipe?

[trike moto]

i have a snap on plug socket that fits it will post pic of it later and part#. The stamp on the pipe is AAEN i now that they make snowmobile pipes but not this any thing like this. The guy i got it from said it was made 8-9 years a go but he never finished the quad it has some surface rust on it but will clean up fine

[tri-Z ripper]

Man that's a tight squeeze in there huh! lead weight needed on the front tire lol???

[trike moto]

here is the socket part # s9704rhs it works great. took the head of the 490 today to get it cut and see that it was cut already it has a 2mm over piston in it that makes it a 499cc sweet!!

[Bryan Raffa]

I have a brand new piston kit for that bore..$130 and it could be yours.. weld a handle on that socket....oh let me guess you did a search of you 490...LOL

[trike moto]

it has a new piston in it sorry raffa i don't understand what you are saying (let me guess you did a search of you 490) what are you doing for a air cleaner the carb is close to the frame

[tecat-z]

the track we race at is old school no timing system just a beam at the finish line that lites up a win lite they us a old stop lite as a christmas tree the track is in three rivers michigan it is the "old iron motorcycle club" they have been running it this way for 20 plus years from what i have been told . i was told the track is 400 foot they have 8-10 race's a year with a points system and money classes
We went there a few times a couple years ago. Swineheart and K Shively are very near the place. Sort of a run down old place with whooped out lanes. But there are some fast machines there. We once had 10-11 3wheelers on the same day. I sort of stopped going due to the tower guy screwing up the classes, and arguing due to his heavy appetite for whisky. I hope they ditched that looser........

[dirtjunkie85]

Oh man that thing is gonna fly with that 490 motor! video please!

[trike moto]

modified some 1" 1/8 bar mounts today so i can run pro taper contour bars worked out good

[trike moto]

the track is owned by the same guy but we have not had any problems with him. the whoops just give it more of a challenge any one can get down a smooth track!

[Bryan Raffa]

dynoport welded a flat piece of steel to a 3/4 craftsman socket,, just short enough that you could get a full rotation on the plug,, without takeing off the shroud..

I stuffed a 48mm lectron in there...lol what do you mean close.. I will soon run a 41.5 pwk , removed the boost bottle, hand made my own carbon fiber reeds..switched the intake..

[trike moto]

Do you want to share what intake you are using

[Bryan Raffa]

I used the stock one up untill this re build....yz 250 comes out strait..

[trike moto]

the strait one is is going to be even closer to the yes - no? what about a air cleaner??

[Bryan Raffa]

Im also going to use a smaller carb,, I used a angled 13" K&N also,, wich you should have no problem,,, seeing how your not running the oem tank.. only one corner of the carb was close.. within 3/16"..Im hopeing this time it will be a even 1/4" across ..then I'll throw this reed spacer on...

[trike moto]

what year 250 did the intake come off of and will the stock carb fit in that intake

[Bryan Raffa]

not t shure .. 6 bolt intake.. not a 4.. it has a similar stuffer molded in it, like a honda,, I may modify it,, maybe with heat... think that was a mic 44mm roundslide,, wasn't it?

[trike moto]

i think the stock carb is a 40 mm??

[trike moto]

hey raffa got a good starting point on gearing this thing i am runing ams zippers 22"tall they are something like pro wege 2's i have 14-42 now but don't think that will work good thanks

[trike moto]

finished the motor tonight will put back in frame tomorrow. then just need to get pipe mounts done and we can fire this beast up. dam it is geting way to cold out!!

[Bryan Raffa]

Use blue lock tight on everything!!!!!!!!!!!!!!!!!!!!! especially the kick starter nut and motor mounts

I run a 16/34 I could have a 33 made for it,, but the chain will rub on the sprocket bolts..thats maxed out for gearing...:naughty:

[trike moto]

got the motor back in frame today pic not so good it was smokey in the shop some one had a sled running

[Bryan Raffa]

I like the pleated seat! and that front sprocket looks bigger than a 14

[trike moto]

the front sprocket is a 14 tooth. made some steel motor mounts today the stock 490 mounts that i have are cracked and new ones are discontinued so i made steel ones should not crack but will move the weak spot some where else? the guys i work with made me this sticker when i was gone very funny!!!!

[Bryan Raffa]

did you make spacers for the front and bottom motor bolts? when I had my pipe made ..dynoport put the groove in the inlet to use the OEM exhaust O ring.. that intake from the 250 is smaller but thats fine because Im using a PWK39 bored to a 41.5mm. got remember I stuffed a 48 lectron in the stock 490 one...LOL

[trike moto]

spacers are tomorrows project the pipe i have has the o ring grove in it i need to get the motor mouts all done then put pipe on so i can make a pipe mount off the foot peg

[trike moto]

got the pipe mounted today just have to paint it also got motor mount spacers made

[trike moto]

fired up the 490 today sound good went for a quick test ride no traction in the snow will have to wait till spring to find out how hard it pulls that's ok still have a lot of work to do to it will post updated picks later

[84 r]

wow its starting to look mean! what kinda pipe is that??

[Bryan Raffa]

got it all coverd in crap didnt ya,,, .. get cleaning!

[ezmoney1979]

Looks awesome! Great job! I think if I looked over and saw that pipe I would say "no thanks" to a drag race :lol: Thanks for the good ideas, I have a built 490 motor out of an old wing cart that I need to put to use.

[Xavier Lange]

Lookin good!! just need the motor

PUT A JET MOTOR IN IT SEE HOW THAT KILLS LOL IVE BEEN THINKIN ABOUT DOIN THAT

[trike moto]

got some good pic today

[Bryan Raffa]

do you know your forks are backwards? they should be a trailing axle not a leading axle.. I thought something looked diffrent..

[swifty]

Looks awsome! great job.. will there be any asphalt drag 1/8 1/4 mile racing in its future or just sand?

[84 r]

looks sweet!!! i love it!

[trike moto]

i now they are backwards was just trying something different will flip it back when my other fork tubes and front hub are back from machine shop having all brake mounts milled off!!! no asphalt or sand just dirt drags

[tri-z keith]

looks good I am building one too getting the motor monday do you know what it weighs the way it sits ? sure like that pipe do you know if it was made for that motor or did it fit another kind of bike

[trike moto]

the pipe was made for the 490 motor in a blaster frame i just had to change the mounts to make it fit

[03 ORANGE SHEE]

looks NASTY!!

[trike moto]

made some screens where the rad went also got started on my wheelie bars still have to fab the top mounts

[Bryan Raffa]

heres ,,, how I did mine quick dissconnect.. your doing a killer Job!

[tri-z keith]

Can't wait to see a time slip on it come spring, did you ever weigh it

[trike moto]

no time slips the track we run at has no timing system just first to the finsh line wins who needs time slips!!!! no i have not weighed it. not trying to set any records just haveing fun

[Bryan Raffa]

no time slips the track we run at has no timing system just first to the finsh line wins who needs time slips!!!! no i have not weighed it. not trying to set any records just haveing fun

you Kidding me! try and beat 4.8 in 300' atleast shoot for that!;)

[trike moto]

finished my wheelie bar today just need to paint it one step closer!!

[trike moto]

hey raffa i have a spare fly wheel for my 490 thinking about haveing it lighted like yours was is it a good idea or not?? how much weight diffrents was there??

[84 r]

damn it looks real nasty!

[Bryan Raffa]

it will rev out fast!!!!!!!!!!! Ill see if I can mesure it today

[Saleenster]

you Kidding me! try and beat 4.8 in 300' atleast shoot for that!;)

Lol

For dirt your still gonna want a better paddle for traction. Your '60's will suck with those things you got.

[trike moto]

Ok that is why 90% of the racers use this type of tire for dirt drags. paddle tires just dig strait down and not go any where the pro wege is the top pick for tires with the 4-snows second I have ams zippers on my 490 for now will have pro wege soon

[Bryan Raffa]

dang I forgot.. busy shoveling snow... ran a 4.8 with pro wedge 2's with ice studs in them,,,

[Saleenster]

Ok that is why 90% of the racers use this type of tire for dirt drags. paddle tires just dig strait down and not go any where the pro wege is the top pick for tires with the 4-snows second I have ams zippers on my 490 for now will have pro wege soon

Is the dirt your racing on packed ? ...aint no bike running pro wedges at PS drags dude...we'd burn clutches and pistons in seconds. The dirt is graded of course, and in some locations a touch of sand is also added

[trike moto]

Got some stuff back from my buddy at his machine shop. lighted fly wheel took off 130 grams he said he can cut two more windows in it like i marked on it in the 2nd pic if i want to go lighter what do you think raffa go more or run what i got. also got front hub back removed brake disc mounts just needs some paint will have to weight it and my stock one to see how much diffrence it is. he is still working on the fork leg milling off the brake mounts

[Bryan Raffa]

run that!!!! you will notice a difference!

[trike moto]

I have been gone for a couple weeks computer went down i got my forks milled and put on. tore the motor down sent top end to (forward motion engines) to get some work done they have done a lot of 490 stuff just waiting on it to come back ordered 1.50mm over piston will make it a 504cc "sweet" also shaved 4 pounds off of trike with front end mods and some frame changes will post pics later