Exhaust pipe Dilema

1722 Views 17 Replies 3 Participants Last post by MathieuOuellette, Jul 4, 2012

MathieuOuellette

Discussion Starter · Jun 20, 2012 (Edited)

Have a loose jet pro for my Mini Quad build, but it'll take alot of cutting and welding to get this thing to fit.... any Idea where I could pick up a pipe that has roughly the same angles/head pipe dimensions as the stock pipe? this jet pro is going to take me like 10 hours of cutting and welding to make it in a way where I am not compromising the durability of my frame, so rather spend an extra few bucks.....

Willing to trade the jet pro for another exhaust that would fit, it's brand new. if anything it will go into my next cag...

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EPR

· #2 · Jun 20, 2012 (Edited)

This is a mini atv it's going on?? Where is it not fitting?? On my A2 I got a 1 1/2" brass spacer for $8 and modded it, and put it between the head pipe and chamber pipe.

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MathieuOuellette

Discussion Starter · #3 · Jun 29, 2012

Yeah it's going in a mini quad. going to take some pictures when I have a chance and post them up. I dont think that copper adapter would work for my quad, the problem isint length, it is the angle of the head pipe, and restricted space due to the frame design the head pipe will not fit in a way where it can clear the cylinder head. There are two parallel support bars going from the front swing arm to the rear swing arm.

EPR

· #4 · Jun 29, 2012

You know the head pipe is supposed to come up on the left side right in front of the clutch housing and the up and then back into the frame, just put my Jet Pro back on the A1 today fits that bike best.

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MathieuOuellette

Discussion Starter · #5 · Jun 29, 2012 (Edited)

Heres some pics of the frame, as you can see, the engine mount sits on two parallel bars, and there is also a bar for the foot rests obstructing me from puting it properly to the side of the cylinder head like in your pic above.

I finished my engine break in and am going to mount it tonight, and take more pics so you can see the problematic area.

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MathieuOuellette

Discussion Starter · #6 · Jun 30, 2012

Here are the pics with the engine mounted.

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EPR

· #7 · Jun 30, 2012

Do you have a welder or know someone with one? Might be easier to cut small Vs out of the pipe bend it and reweld it, think it's SS pipe. You might be able to cut the cross bar and weld it somewhere else.

MathieuOuellette

Discussion Starter · #8 · Jun 30, 2012

EPR said:
Do you have a welder or know someone with one? Might be easier to cut small Vs out of the pipe bend it and reweld it, think it's SS pipe. You might be able to cut the cross bar and weld it somewhere else.

yeah i've got a 100 amp arc welder and gas welding equipement that I can use, but tubing is not my forte. what if I were to extend it using a shim between the head pipe and the head attachment? maybe I could get the pipe under the parallel support bar and between the foot rest and motor mount?

CAM2

· #9 · Jul 1, 2012 (Edited)

MathieuOuellette said:
yeah i've got a 100 amp arc welder and gas welding equipement that I can use, but tubing is not my forte. what if I were to extend it using a shim between the head pipe and the head attachment? maybe I could get the pipe under the parallel support bar and between the foot rest and motor mount?

You should try one of those torkker exhaust manifold spacer/cooler like EPR has on one of his bikes......

MathieuOuellette

Discussion Starter · #10 · Jul 1, 2012

CAM2 said:
You should try one of those torkker exhaust manifold spacer/cooler like EPR has on one of his bikes......

got a link to a pic for that? I think you're on to something... instead of spending hours cuting and welding I could cut the foot crossbars in between the two parallel support bars.... then add a spacer on the mani...

EPR

· #11 · Jul 1, 2012

I have 2 of them, there $28 each, billet computer machine aircraft alum 6061 T6 I believe. I got them for the 2 engine drag bike, that Cam2 has helped me problems that come along. The engines are inline and backwards w/ the carbs facing forward, so the exhaust go out the bottom and back. The go from rectangle to round real smooth inside, and they look great for Blink even if they didn't work,lol.
I think the problem using the Torker w/ the Jet pro is it is to small, 3/4" OD and if you measure the ID on the head pipe where it fits over the head piece, it is more like 1".
Extending the head pipe would be the easiest. Go to a place that sell exhaust pipe, take your pipe with you, I took mine to a store that has alot of car to big truck pipe, and looked thru extention pieces that will work. Anything under 1 1/4" to 1 1/2" might beharder to find. I got a $20, 3" OD truck extension and I am making 3 big belly extension pieces out of it, one which is bent.

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MathieuOuellette

Discussion Starter · #12 · Jul 1, 2012

yeah thats probably the most viable solution, as the head pipe comes in two pieces maybe I could put an adapter between the manifold connection and the head pipe, I would still need to cut that footrest crossbar, or maybe even remove the footrests all together and fabricate some brackets and pegs....

EPR

· #13 · Jul 2, 2012

There are so many different parts and bikes that look the same, but there only close. I changed to a new engine on my Cag and had to respace the rear axle to line up the rear gears. I did not know till the chain came off the rear gear got jammed in the third bearing housing, blew it off in pieces, and twisted the crank 1/4".
I don't like the head pieces that give you on all these spring held pipes, I got the 2 Torkers for the 2 chrome hp underpipes like in the photo. The port is rectangle and the pipe is round. When the exhaust trys to get out it haits a shelf. Every exh I have, had to grind out the welds and fill the pin holes, even my Jet Pro. They could take a short piece of thick round pipe and form it into a rectangle on one end and weld it to the flange and then it would be smooth. Makes a big difference at high RPMs.

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MathieuOuellette

Discussion Starter · #14 · Jul 3, 2012

thats what I was thinking, scratch the head pipe, fabricate a new one... or even maybe cut the stock pipe and use the recantle piece of head pipe....

edit: you think one of these could fit?

http://www.pocketbikeparts.com/PhotoDetails.asp?ShowDESC=N&ProductCode=CGEX301344

EPR

· #15 · Jul 3, 2012

That is a good pipe, nice fat belly, good angles & small short head pipe. The MTA2 gas tank has a channel on the bottom to clear the pipe. A few months ago they were out of them, I would call and ask them. That would be easier to fit than the Jet Pro, there a pain to put on, no matter what bike you have.

MathieuOuellette

Discussion Starter · #16 · Jul 3, 2012

http://www.tsunamibike.com/catalog/item/5535391/6880986.htm

same thing is it not? they have in stock, I emailed them today.

Dont really need the gas tank.

EPR

· #17 · Jul 4, 2012 (Edited)

It's the same type exhaust, maybe better than the PB Parts. The stinger comes off Tsun's don't know about PBPs pipe, does it come with a gas tank?? It's $80, but if you live in Canada, it could be cheaper to get it there because of shipping costs to Canada, I buy at PB Parts cause I am in the USA & I get 10 percent off and free shipping on $99+ and no tax. Overall the fatty pipe is probably better than the Jet Pro, which is really good on the low end to mid-range. You need to measure from your exhaust port up to the lowest point above where the pipe will be, like under the gas tank or ??? Then call Tsun have them measure there pipe to see how high it is.

MathieuOuellette

Discussion Starter · #18 · Jul 4, 2012 (Edited)

I'm in montreal so I can drive to hamilton and pîck it up there over the weekend... I`m not really worried about it not fitting as far as where the gas tank sits(see pics above, lots of space there), if it`s designed to clear a CAG head then it should be OK...going to email them to get dimensions of the whole thing, i'm more concerned about the width of it near the rear end of the pipe, where the shock for the rear swingarm is welded theres a limited amount of space available.

Anyways, cheers EPR and thanks for the help!:thumbsup::thumbsup:

edit: found the same kit PBP has at a local china bike dealer here in montreal, gonna go check it out tomorow after work.

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