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Very Long Header = Short Pipe?

Old 07-10-2006, 01:04 PM
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poor judgement
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Default Very Long Header = Short Pipe?

Looking for a bit of help from someone who knows.

Ive put a SH28 in a Cen funfactor, and wanted the pipe to fit in the stock location, along the side. I had 2 options either mount it forwards and have a very long header or backwards and have just a "slightly" longer header than is normal. I went for the latter, but am not convinced Im getting the full engines potential because of the long header.

Theres a pic below of what I bodged up to try it out. Its very, very tight for tyre clearance amongst other things. I was just thinking that, given the nature of 2 strokes, maybe an OS T1030 pipe would maybe help up the performance a little, as its shorter than my .21 pipe and would maybe allow for the extra length of the header... and maybe make better power? My current header is about twice the length of regular setups - do you see where Im coming from?

Im about to buy a T2050 pipe, not cheap, just wondering if the money might be better spent elsewhere? I hope that all makes sense.

Thanks for any help.

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Old 07-10-2006, 11:42 PM
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gubbs3
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Default RE: Very Long Header = Short Pipe?

I don't think the pipe is going to make that much difference in that already grossly overpowered truck. The longer header will take away some top end but as I said before... The OS 1030 would most likely hurt performance rather than gain any since the size of the stinger is going to be much smaller. The backpressure of that pipe would hinder performance rather than improve it. Compare it to running a big V8 through a <2 in. pipe from a 4 banger.
Old 07-10-2006, 11:46 PM
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SManMTB
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Default RE: Very Long Header = Short Pipe?


ORIGINAL: poor judgement

Looking for a bit of help from someone who knows.

Ive put a SH28 in a Cen funfactor, and wanted the pipe to fit in the stock location, along the side. I had 2 options either mount it forwards and have a very long header or backwards and have just a "slightly" longer header than is normal. I went for the latter, but am not convinced Im getting the full engines potential because of the long header.

Theres a pic below of what I bodged up to try it out. Its very, very tight for tyre clearance amongst other things. I was just thinking that, given the nature of 2 strokes, maybe an OS T1030 pipe would maybe help up the performance a little, as its shorter than my .21 pipe and would maybe allow for the extra length of the header... and maybe make better power? My current header is about twice the length of regular setups - do you see where Im coming from?

Im about to buy a T2050 pipe, not cheap, just wondering if the money might be better spent elsewhere? I hope that all makes sense.

Thanks for any help.


No matter what pipe you use that long header will reduce peak power and rpm.
It's all about the resonance length.
Old 07-11-2006, 11:40 AM
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Default RE: Very Long Header = Short Pipe?

grossly overpowered truck.
Aye, thats what the drive train said... Lol, theres an OS.30 that wants to go in next, was hoping to get as much poke from it as possible to justify the cost. Just toying with ideas now it actually holds together pretty reliably.

But I can see what you guys are saying, thanks for the input, its appreciated. Ill probably stick with what Ive got then for the time being, I cant see any other way of mounting it out of the way.

Cheers guys.
Old 07-11-2006, 01:45 PM
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poor judgement
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Default RE: Very Long Header = Short Pipe?

Just a thought, is there anything available like this for a .21+



I found it here - http://www2.towerhobbies.com/cgi-bin...?&I=LXFES1&P=7

It would be perfect... if such a thing exists.

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