Off-Road - ROAD Tech Questions

SUBJECT:  EXHAUSTING QUESTIONS

on my 88 cr 205r i want to get a new exhaust on it, currently i have a fmf gold series pipe but stock exhuast if i buy a pro circuit end pipe will that do anything or what?
Kaleb Parry

The first thing you’ll have to do is learn how to communicate better than a drunken field mouse. I never heard of a CR 205r. Could you mean a 250 CR? One never knows these days. If you have an FMF pipe, why would you need another pipe? Will the Pro Circuit pipe do anything? Hmmm. It’ll give you yet another reason to spend money on your 88 cr 205 for no apparent reason. 

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SUBJECT: THE MYSTERIOUS KX 250

hey rick,
Im into the 1980-90 model 2 strokes and i had a guy offer me a trade for my 850$ rc truck. It is a Kawasaki KX 250 as he said. He siad it was an 86 but i really dont think so. Ill try to send a picture. heres the url if that helps. http://it.tinypic.com/r/14msab7/6 thanks and tell me if its a good trade. he says he has sanded it down and painted it since then and it has an fmf pipe and new renthal bars.
Dylan Earls

I could tell virtually nothing from the URL that you sent me. However, some general advice might be helpful. If the bike runs good, just about any mid-1980s Kawasaki KX 250 is about the fair price for the bike, assuming it runs okay. Sitting down and taking a bike and making it look pretty doesn't mean that it's a bargain. The most important thing is how it runs. The FMF pipe and the new Renthal bars are just pluses. Again, it must be a sound bike mechanically for to be any kind of a bargain worth considering. Here’s a photo of an ’86 KX 250.

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SUBJECT: WET HONDA 250 MUFFLERS

First off, the bike is a CRF, not a CFR. It was the TWO exhaust four-stroke bike that was made for only a short period of time, then Honda went back to a single exhaust system. When you get water in the mufflers, the single best thing you can do is to fire the bike up until it's good and hot and water in the muffler will get blown out or vaporized.  Any time you do wash your bike off, you should plug off the muffler(s) to keep water from entering. A simple rag in the end will do just fine. About the worst thing that can happen to the muffler is that the water will mix with the oily exhaust residue and then seep down into the fiberglass packing of the muffler and shorten its life span.

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SUBJECT:  HUH?

Could you please tell me the year, model, and cc from this serial # 3V4-050265.
I just purchsed this bike and don't know this info as I do need to get parts. Thank you.
Regards,
Darin R

It’s a Yamaha DT125, 80 or 81. And the next time you write, have the common courtesy to include at least the brand of the bike. If you don’t know that, then you shouldn’t be allowed to have a dirt bike.

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SUBJECT:  2010 MAICOs

Dear Mr. Sieman,
What do you think about the new Maicos that are coming out? Could Maico ever be as big as it once was? What do you think about the Maico 700cc two-cycle?
Thanks,
Krister Samuelson

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SUBJECT:  WHY A KLX 250 WON’T START

i have klx250 1995 i can push start it but not kick start it why
Richard

It probably won't start because the maintenance it received is about the same quality as your e-mail: sloppy and poorly done. If you would just go through the bike, clean the filter, put a fresh sparkplug in, clean the bowl of the carburetor and blow out the jets, chances are it would probably start and run quite well.

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SUBJECT:  HUNTING FOR KTM PARTS

Where can you find parts for the 1984 to 1986 KTM 250
Ron Bereman

Just about any of the really well-stocked, larger KTM dealers will have parts for older bikes in their inventory. Failing that, here's the main contact for us, 920-996-9480     ***

SUBJECT:  YET ANOTHER BIKE DROWNING

I submersed my 2000 RM250 for maybe 2 to 3 seconds. It fell on its side, as did I...
I got it started again and it ran breifly while spitting out white from the pipe (water I assume) and then it stalled so i left it alone. I have now drained and replaced all fluids and ran clean gas through the carbs for a few seconds. the bike will kick start after about 8 kicks but will only run for 1 second or so.

What should I check next? Reed petals?
Swamped It

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SUBJECT: STRANGE BIKES YOU'VE PROBABLY NEVER SEEN BEFORE

i have a nomad-72 that says was built by the snow company of omaha nebraska. i was wondering if there is any information on it or somewhere i get get parts for it
James Raddatz

The Snowco line of three-wheel vehicles offers utility as well as sport. And a front ski attachment which replaces the front wheel permits year-around use. Sportiest is the Tri-Scat with metalflake fiberglass body (shown), leather-type bucket seat, and low-bar, low-pressure ATV tires. It's available with 5-hp or 7-hp engine, and the 7-hp model comes equipped with standard head lamp and roll bar. The 7-hp Tri-Scat is also available in a deluxe model with 12-V key starter, head- and taillights, chrome front fork, roll bar and hubcaps. More utilitarian is the Nomad, also available with 5-hp or 7-hp engine, and equipped with wide, low-pressure knobby tires. Headlight and roll bar are standard on the 7-hp model. Addition of an optional cargo carrier makes the machine a utility vehicle for hunters, fishermen, farmers and many other users. The "baby" of the line is the 2 1/2-hp Mini-Scat, produced especially for youngsters, but far from a toy.

The attached photo is of the unfortunately named tri-scat, which was the big leader in the airline of the TVs. Send us a photo of your nomad to share with our6 readers. As far as finding parts, lots of luck.

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SUBJECT:  CHECKING OUT A BATTERED 1998 YAMAHA RT 180

i have recently bought a 98 yamaha rt 180. it was ran through water 4 years ago then it sat. the guy before me owned it for like a week thinking it was a 4 stroke. it will start but it smokes bad and sounds rough when your kick starting it. can you give me a checklist or somthing to go over the bike with.
thanks, matt

The Yamaha RT 180 was a near bulletproof bike and you had to do something pretty bad to it to make it stop running. I would do a normal checklist on the bike to see if it's sound or not. This should include a fresh plug, cleaning the filter, completely cleaning the carb, including cleaning all the jets, changing the transmission fluid and getting rid of the old gas and putting in some fresh fuel. Then you should do a compression check on the top end to make sure everything is sound. If nothing is mechanically wrong at this point, the bikes should start and run nearly for forever.

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SUBJECT:  1989 YAMAHA YZ250 SPARK WOES

Hi there,
I recently bought a 1989 yz250 with ignition problems. It turned out to be the ignition coils, and after changing them i found some spark. My problem is that now it will only run in reverse. I've tried advancing and retarding the timing, but still starts in reverse. Any advice would be appreciated.
Thanks.
Bryn Morris

If your bike is running in reverse, it means that the ignition timing is far too close to top dead center. This was a very common problem in many of the older European bikes, especially with Bultacos. The timing should be around 2.5 or 3.0 mm before top dead center, but if you let it slip to something like 1 mm, many bikes would indeed start and run backwards, scaring the living hell out of most people in the process. Recheck your timing and make sure you're in the ballpark and the problem should go away.

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SUBJECT:  WHICH PLUG FOR RACING?

Any time that you're going racing, you want to use the coldest plug possible. In the NGK line of spark plugs, the higher the number, the colder the plug. Therefore your eight is warmer than a BR9. Definitely go with the BR9 for racing. For casual use or trail riding, the eight is just fine.

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SUBJECT:  NAME THAT YAMAHA

Regarding Yamah Vintage Dirt Bike ID Guide
Can you tell what series dirt bike I have? I don'[t see it listed above. The serial # is 2A7-003906
Don

You have a 1978 DT175E.

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SUBJECT:  QUESTION REGARDING A CHINESE PIT BIKE

Are the intake valve and the exhaust valve for a 50cc baja dirtbike the same
Cindy

Not only do I not know what that the specifications on the valves are  on your 50cc El Cheapo Chinese pit bike, I could care less. The fact that you have one of these pieces of crap tells me that you've don't care at all about quality. So please forgive my outburst and take your bike somewhere else for information. Where that is, I don't know. And only a few people care.

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SUBJECT:  BRAKE SERVICE ON A TTR125 YAMAHA

How do I check / change the front brakes on a 2003 TTR 125.
Berto

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SUBJECT:  SEARCHING FOR YAMAHA RT 180 PARTS

How can I get electrical parts for a 1990 Yahama RT 180 made in Brazil?
Jason Muller

Now this might come as a shock to you, but you could probably go down to your local Yamaha dealer and find what you need right over the counter. Lots of bikes are made in Brazil, including many Honda dirt bikes, and you won't have any trouble getting parts for those either.

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SUBJECT:  MORE YAMAHA ID STUFF

Re: Yamaha Vintage Dirt Bike ID Guide
my 78 250 has T-Z 1 on the right side engine case . do you have any info about this?
Scott Zupner

It’s just a casting code on the cases.

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SUBJECT:  BUZZING SOUND FROM A SUZUKI RM 250

I have a rm 250 2 stroke and its making a buzzing noise from the engine, i just changed the oil in in a few days ago and i just cleaned the carb two days ago because the float kept sticcking. after i put everything back together thats when it started making the buzzing noise, what can that noise be?
Sean Garvey

Normally, your e-mail would simply get tossed into the “don't answer” basket, but I recall back to a mid-80s RM250 that I owned that did the same thing. I traced it down to a reed valve that was frayed and about ready to break off. So I would check this first.

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SUBJECT:  YET EVEN MORE YAMAHA ID QUESTIONS

i have an old yamaha i dont no wat it is but i do have the serial number its 1m1-108323 thats all i have.
thanks.
matthew williams

Your bike is a 1978 DT250E.  By the way, you write like a chimp.

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SUBJECT:  ALUMINUM GAS TANKS FOR SUZUKI TM 125?

RE: Suzuki TM125 Challenger Vintage Dirt Bike
do you know which years the tanks on these model suzuki's were aluminum? i cannot find any information online indicating. i currently have one suzuki gas tank (seems to be about a 1973/1974 enduro style) that is aluminum but pretty banged up. am looking to search for a replacement and didn't know what years the aluminum tank was offered. thank you. - amy
Cafe Amy

All of the TM125 tanks were steel.