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View Full Version : Kerker exhaust 81-82 250r?



three_wheelin45
01-13-2012, 12:28 AM
Well I have been trying to find out what kind of pipe I have on my 82 250r, It looked like an answer until I saw the kerker exhausts ;) I think that what it might be ;O but is there any specific way to tell?? Cause as far from what I can see theres no numbers on the silencer... 139755139756

tri-shee
01-13-2012, 09:59 AM
I don't know anything on your exhaust but , i have a new maier front fender 81-82 model and a rear set of fenders if your interested ? I am located in Dayton .

Jason125m
01-13-2012, 03:37 PM
Maybe Fabio will chime in. He has a Kerker on his R.
Comparing it to a kerker, it seems to have some differences on the very end of the silencer.

three_wheelin45
01-13-2012, 07:44 PM
It has no vin numbers on it or stamps...

Yamaha_Rules69
01-13-2012, 09:51 PM
Be sure to wear a helmet every time you ride that 250r. It will make your 200x look like a childs toy, and that thing can get out of control quick if you dont know what your doing. Just trying to look out for you, and nice to see another air fooler come back to life.

RIDE-RED 250r
01-13-2012, 10:02 PM
I'm no expert on the Air-Hammers, but it looks like you have a re-painted stock pipe with some sort of aftermarket silencer....

three_wheelin45
01-13-2012, 10:05 PM
Be sure to wear a helmet every time you ride that 250r. It will make your 200x look like a childs toy, and that thing can get out of control quick if you dont know what your doing. Just trying to look out for you, and nice to see another air fooler come back to life.

Ya, Honestly I wear my helmet everytime I ride since I wrecked my 200 ridin a wheelie down my road...

200
01-14-2012, 07:27 PM
That is a stock expantion chamber with an old school dg silencer.

three_wheelin45
01-14-2012, 07:55 PM
That is a stock expantion chamber with an old school dg silencer.

you sure bud? cause the dg pipes I see for this bike look like this http://www.ebay.com/itm/250958003787?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_1208wt_1171

Dirtcrasher
01-14-2012, 08:07 PM
http://i257.photobucket.com/albums/hh220/Dirtcrasher/OohreallyGIF.gif

RIDE-RED 250r
01-14-2012, 10:28 PM
you sure bud? cause the dg pipes I see for this bike look like this http://www.ebay.com/itm/250958003787?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_1208wt_1171

Ok, that would be the silencer.... The pipe is on the other end of the exhaust system..

And as to what brand your silencer is, it could very well be a DG... For as many years as they have been around, it's doubtful they are making the silencers the exact same way they did 25+ years ago....If there are no identifying markings on it, I would take the word of those here who recognize it. And FWIW, the silencer has no significant influence on performance anyway..

three_wheelin45
01-14-2012, 10:45 PM
Ok, that would be the silencer.... The pipe is on the other end of the exhaust system..

And as to what brand your silencer is, it could very well be a DG... For as many years as they have been around, it's doubtful they are making the silencers the exact same way they did 25+ years ago....If there are no identifying markings on it, I would take the word of those here who recognize it. And FWIW, the silencer has no significant influence on performance anyway..

Well the silencer is what I obviously meant if the header is stock, I obviously knew the header was stock. Also yes just a slip on exhaust can make a differene, but ya the headers make the most difference ;) like my 240 blaster was slow with the stock header, but with the Fmf header and silencer it was amazing the difference (way better take off and atleast a 10mph top end difference) Crazy how some metal can make a diff...

RIDE-RED 250r
01-14-2012, 11:05 PM
Well the silencer is what I obviously meant if the header is stock, I obviously knew the header was stock.
Well, the way you worded the post calling it the pipe makes us think you were referring to.. well... the pipe. That's what it is known as....

Also yes just a slip on exhaust can make a differene,
Sorry to say, but it doesn't. What determines your HP, power curve, and torque is the expansion chamber length, taper, diameter and stinger length and diameter. Silencer is just that... a silencer.

but ya the headers make the most difference ;) like my 240 blaster was slow with the stock header, but with the Fmf header and silencer it was amazing the difference (way better take off and atleast a 10mph top end difference) Crazy how some metal can make a diff...
Exactly! The difference was made in the FMF header, AKA: pipe.. Not to mention, the stock exhaust system was most likely waaaaayyy out of it's league running on that 240 BB kit!




Not trying to be combative here... Just the facts.

three_wheelin45
01-14-2012, 11:37 PM
Not trying to be combative here... Just the facts.

okay well a silencer is knows as a slip on exhaust... tell me how this happens then?? http://hmfracing.com/shop/pipes/yamaha/raptor-350-05-09 (will pick up 8% horsepower) http://hmfracing.com/shop/pipes/polaris/outlaw-500-06-07 (makes 7% more hp) but slip ons/silencers dont do anything remember... sorry bud but your wrong there...

RIDE-RED 250r
01-14-2012, 11:48 PM
okay well a silencer is knows as a slip on exhaust... tell me how this happens then?? http://hmfracing.com/shop/pipes/yamaha/raptor-350-05-09 (will pick up 8% horsepower) http://hmfracing.com/shop/pipes/polaris/outlaw-500-06-07 (makes 7% more hp) but slip ons/silencers dont do anything remember... sorry bud but your wrong there...

Ok, you are comparing apples and oranges when you are comparing a 2-stroke exhaust and 4-stroke exhaust and how they work. In some cases on a 4-STROKE performance gains can be seen with a better flowing muffler. But optimum gains are achieved with the header and muffler combination along with upgraded intake, IE better air filter. I would also take the "dyno sheets" provided by HMF, for HMF add-ons with a grain of salt. Apparently, you don't realize the differences between 2-stroke and 4-stroke exhaust systems and how they work...

BUT, we were/are talking about your 2-stroke 250r here aren't we??

I have been wrenching on and riding these things since before you were born. I'm not wrong on the original point being discussed...

Done here.....

three_wheelin45
01-15-2012, 12:04 AM
Ok, you are comparing apples and oranges when you are comparing a 2-stroke exhaust and 4-stroke exhaust and how they work. In some cases on a 4-STROKE performance gains can be seen with a better flowing muffler. But optimum gains are attained with the header and muffler combination. Apparently, you don't have a clue as to the differences between 2-stroke and 4-stroke exhaust systems and how they work...

BUT, we were/are talking about your 2-stroke 250r here aren't we??

I have been wrenching on and riding these things since before you were born. I'm not wrong on the original point being discussed...

Done here.....

alright well good for u but this is a 2 stroke silencer... http://www.rockymountainatvmc.com/p/43/53/207/904/-/4630/FMF-Power-Core-II-Shorty-Silencer dude... honestly only 2 strokes ive messed with is a 04 kx125 and 2 yamaha blasters ( one with a 240 vitos bb and a fmf fatty with a power core silencer)

three_wheelin45
01-15-2012, 12:12 AM
well anyways... tommorow im getn a front fender, rear fenders, throttle cable, a hiflite seat and seat cover from tri-shee. Hopefully I can get this bad boy cranked :mad:

RIDE-RED 250r
01-15-2012, 12:14 AM
Don't see any hp or percentage promises on that silencer.... There's a reason for that. Louder doesn't necessarily mean more HP.

Here ya go.. http://www.motorcycle.com/how-to/how-twostroke-expansion-chambers-work-and-why-you-should-care-3423.html

As i said, expansion chamber and stinger. As long as you aren't welding a washer in your silencer outlet making the outlet more restrictive, the silencer just isn't a significant player in the game. In other words, so long as the silencer is no more restrictive than the stinger portion of the pipe....

Have fun putting your new parts on..

three_wheelin45
01-15-2012, 12:20 AM
it says more bottom end or whatever... so in reality it gives a tad bit of difference not none... but okay anyways, do u think i should run a airbox or no?

RIDE-RED 250r
01-15-2012, 12:24 AM
it says more bottom end or whatever... so in reality it gives a tad bit of difference not none... but okay anyways, do u think i should run a airbox or no?

If you end up riding in any wet or muddy conditions, I would run the airbox. If you need to, you can cut a couple of holes in the airbox lid, or remove the lid. It will be more water protected, but not as waterproof as running an intact airbox. Running no airbox is mainly for duners, hill shooters, and asphalt racers.

Dirtcrasher
01-15-2012, 12:26 AM
OEM trikes had an air box for a reason...............

three_wheelin45
01-15-2012, 12:35 AM
I think I might fab up my own airbox... aluminum, I got a sheet of "1/8in" thick aluminum out back, but I dont got much practice with wielding aluminum... hmm...

200
01-15-2012, 03:37 PM
In the mid 70s dg had a circular silencer just like yours heres a pic of a vintage dg race bike http://www.ebay.com/itm/1980-Honda-CR125-DG-Package-Racer-REAL-DEAL-Vintage-MX-MotoCross-Works-RC-MUGEN-/170760603155?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item27c2200613

Then in the mid 80s they switched to the oval silencer. And to back up ride-red the silencer doesnt do anything for a power adder all it does is make it sound different. I youst to run a dg head pipe with the stock silencer and then when i put the dg silencer on i felt no difference in power but a big difference in noise. Also for an airbox depending on where you ride you should run one but i have a k&n with an outerwears protectar and it does just fine.

fabiodriven
01-15-2012, 05:21 PM
It has no vin numbers on it or stamps...

Can't say I've ever seen a pipe with a VIN on it! :lol:

It's not a Kerker. Here's mine- (Sorry the bike's so dirty!)

http://i146.photobucket.com/albums/r275/fabiodriven/001-1.jpg

http://i146.photobucket.com/albums/r275/fabiodriven/002-1.jpg

http://i146.photobucket.com/albums/r275/fabiodriven/003.jpg

http://i146.photobucket.com/albums/r275/fabiodriven/004-1.jpg

I just wanted to take this opportunity to tell you threewheelin, that you should take a few steps back and look at who you are. All this bogus posting, baiting, smack talking, crying about mommy and having to find a job, etc, etc, etc.... We've all been there kid. You're not some sort of special case like you seem to think. That's what being a teenager is about. Go listen to some whiny teen-angst band or something.

P.S. I'm not gonna give you the rant about helmets and brakes like everybody else. I personally don't give a sh!t if you wipe out. It might teach you something. God knows you're not going to listen to those who have been there.

200
01-15-2012, 05:47 PM
Man fabio even though that r is dirty she is real nice with all the old school parts i see on it:drool:

three_wheelin45
01-15-2012, 08:38 PM
thanks fabio... but please dont ever say nothing bout me miss treating my bikes, mine never look like that. I wash them after every single ride and greese them after ever 10 rides or so...

fabiodriven
01-15-2012, 09:23 PM
I would like to add that both brakes work flawlessly, front and rear.

Also, you'll never get help from me with anything again.

three_wheelin45
01-15-2012, 09:50 PM
I would like to add that both brakes work flawlessly, front and rear.

Also, you'll never get help from me with anything again.

No hard feelings just saying... and cool my bikes are made for going not stopping

RIDE-RED 250r
01-15-2012, 10:02 PM
No hard feelings just saying... and cool my bikes are made for going not stopping

I am saying this in earnest....
Look, almost every time you are "just saying" you come across in a know-it-all, smart-a** way that ticks off alot of people who are trying to help you.

There is a huge wealth of knowledge here that I have learned alot from in the time I have been a member here.. I have been involved in the sport at a recreational level for nearly 25 years, riding and wrenching on bikes, trikes, quads and sleds. I have been around the block with this stuff a time or 2, but I don't claim to know everything, never will. There is ALWAYS room to learn, no matter how long a person has been at it. All I'm saying is maybe if you work on your manners a little bit, you will probably have alot better experiences here..

three_wheelin45
01-15-2012, 10:28 PM
well obviously I dont know it all... and I like how I cant find a damn shifter for this SOB!! will the 83-84 shifters work on the 1st gens or no?

RIDE-RED 250r
01-15-2012, 10:29 PM
I honestly don't know if the shifter will swap over or not.. Anything come up in the search engine?

Ran a quick search and found someone in the classifieds selling one for $20 http://www.3wheelerworld.com/showthread.php/138252-1981-1982-Honda-250r-atc-parts-CHEAP?highlight=1st+gen+250r+shifter

Might still have it..

three_wheelin45
01-15-2012, 10:37 PM
well see I have a problem... I dont really like getn used gear items... such as used sprockets... used shifters... used bolts... brake/clutch levers... I like them NEW!!! things with splines that are used make no sense to me. But then again I might just have to get one :*( I will keep lookin but yea i used the search and I did find that post! thanks though!

RIDE-RED 250r
01-15-2012, 10:40 PM
I hear what you are saying about used parts, but sometimes that is our only option with our "outdated" trikes... I know many companies make nice billet shifters for the TRX's (which also work on a 3rd gen ATC), but I am not aware of an aftermarket company that makes shifters for 1st and 2nd gens... Not to say there might not be someone, I just don't know about it if there is..

The way Honda made the TRX so similar to the 3rd gen ATC has kind of saved our bacon as far as parts availability for the 3rd gen ATC's

Tippmann98
01-15-2012, 10:47 PM
No hard feelings just saying... and cool my bikes are made for going not stopping



https://lh5.googleusercontent.com/Wk5ikXWivUmB2deeoXxN1Jvkmr28O5mUmQA7Wu67wQ-W__J9r2sE5uoOEyQomuQNJHTVQ6zSZfRxDecM1bWXctXfn_Ei2 ccFGKWXRXlDFcdaLPk19XE

three_wheelin45
01-15-2012, 11:01 PM
^^ ya kinda... and ya i would love to own a 3rd gen one day or just a trx250r... but ya Im doin some work on the front brakes tommorow to get em workin, throwin my spare 200x hubs on and tires, then gota do something for a airfilter... then I can get her runnin on down the road!!

zzmegad
01-15-2012, 11:19 PM
dude yeah that trike is way to nice for a used shifter

three_wheelin45
01-15-2012, 11:26 PM
dude yeah that trike is way to nice for a used shifter

idk if trailprotrailpro beeing sarcastic or not... but ya it is to nice for one, and if everone said "its to ugly for a new part" then they would never have nothing nice. dont take much to make stuff look nice. my carb looked like a swamp!! 2nd worst carb ive ever seen besides my old 185s carb... now it looks real good :P

Dirtcrasher
01-15-2012, 11:46 PM
I bet your a handsome little devil yourself. Ever seen "to catch a predator?" We can chat........ :D

three_wheelin45
01-16-2012, 12:23 AM
I bet your a handsome little devil yourself. Ever seen "to catch a predator?" We can chat........ :D

to catch a predator?? wtf and no i dont want to chat with u... u took my durablue :P

Dirtcrasher
01-16-2012, 12:47 AM
A famous line taught to me years ago, "I didn't take or steal it, I won it....." :D

It looks great in my dining room leaning on the crate motor :lol:

three_wheelin45
01-16-2012, 02:56 AM
A famous line taught to me years ago, "I didn't take or steal it, I won it....." :D

It looks great in my dining room leaning on the crate motor :lol:

:rolleyes: trailprotrailpro cool!!