Avoneer
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| posted on 12/9/05 at 10:05 PM |
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Header and collector pipe length - blade
Anyone know what the consequences would be of fitting my can to the end of the downpipes and mounting it mid car, rather than the norm of having a
long collector and mounting the can at the back of the car next to the passenger.
Engine is a carbed 'blade.
Cheers,
Pat...
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ChrisGamlin
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| posted on 13/9/05 at 05:04 PM |
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Hi Pat
I don't think the "1" bit of a 4-2-1 exhaust has much effect on power / torque so apart from the gasses being a bit hotter and
possibly blowing out the silencer wadding a bit quicker, I cant see a problem.
If you want "proof", my R1 silencer currently clamps straight into the manifold so the "1" bit is about 6" in total, and
that produced the power I was expecting on the RR the other week
Chris
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Avoneer
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| posted on 13/9/05 at 07:08 PM |
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Cheers Chris,
Thought no one was going to reply at all then!
Can't decide whether to use the headers I got from you, but with a shorter 2-1 bit, or get some long stainless headers from MK.
Cheers,
Pat...
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kb58
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| posted on 13/9/05 at 07:23 PM |
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My understanding of tuned headers is, once you get past the collector, nothing matters if you have a muffler.
OTOH if you do not have a muffler, the "1" length does matter to tuning because the exhaust pulses reflect off the *open* end of the pipe.
Once a muffler is added that gain is lost.
Mid-engine Locost - http://www.midlana.com
And the book - http://www.lulu.com/shop/kurt-bilinski/midlana/paperback/product-21330662.html
Kimini - a tube-frame, carbon shell, Honda Prelude VTEC mid-engine Mini: http://www.kimini.com
And its book -
http://www.lulu.com/shop/kurt-bilinski/kimini-how-to-design-and-build-a-mid-engine-sports-car-from-scratch/paperback/product-4858803.html
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Avoneer
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| posted on 13/9/05 at 10:03 PM |
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So I can have my can mounted mid car then!
Cheers,
Pat...
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However a large number of electrons were terribly inconvenienced.
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chrisf
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| posted on 13/9/05 at 11:27 PM |
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Pat:
I'm dealing with a similar situation. Do you have pics or illustrations of what you're considering? I'm having a hard time
visualizing.
--Thanks, Chris
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Hellfire
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| posted on 14/9/05 at 12:20 AM |
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Only problem I foresee is if you do have a passenger they will be breathing in the exhaust fumes... as there will nothing to stop the fumes entering
the car just past the scuttle. Mounting the silencer could be a problem as the lower chassis doesn't follow the GRP on the Indy in-front of the
footwell. Don't know what it's like on a locost though?
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ChrisGamlin
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| posted on 14/9/05 at 11:19 AM |
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My silencer does "sit" across the angled part of the chassis and slightly points outwards rather than parralel to the side chassis rail,
but overall it doesnt stick out any further and the outlet pipe is sufficiently far back so as not to trouble passengers (probably about 25cm gap
between rear of silencer and front of rear arch.
Ive probably got some pics at home so will upload later.
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Andy W
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| posted on 14/9/05 at 04:26 PM |
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I'd make sure the headers are the same length as the bike they came from. Mr. Honda knows a thing or two about exhausts.
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Avoneer
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| posted on 14/9/05 at 07:39 PM |
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Chris, can you shed any light on the mild steel headers?
Cheers,
Pat...
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ChrisGamlin
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| posted on 14/9/05 at 07:53 PM |
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Its not the prettiest with the welded bits to facilitate the slightly expanded primaries, but its a good proven manifold. It was off a Fury that raced
in the RGB, several of the RGB guys had them made up together but the chap I bought it from couldnt fit it to his car because his engine was slightly
lower in the chassis than the car that the manifold was built on, so it didnt quite fit his.
Chris
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Ferrino
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| posted on 15/9/05 at 03:50 PM |
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Did you find any pics of your R1 can, Chris? Interested to see, as Andy @ Promotive is currently making me a zorst for my R1 BEC and I will be linking
it up to a standard R1 can.....
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ChrisGamlin
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| posted on 15/9/05 at 04:54 PM |
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I havent got any at the mo no, but am out in the garage in the next day or so preparing for a trackday at Rockingham on Sunday, so will take a few
pics then.
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Mad Dave
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| posted on 15/9/05 at 06:38 PM |
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quote:
Only problem I foresee is if you do have a passenger they will be breathing in the exhaust fumes... as there will nothing to stop the fumes entering
the car just past the scuttle.
If stuck in traffic yes but not when buzzing around some twisty roads
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Hellfire
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| posted on 15/9/05 at 07:26 PM |
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I don't think it matters where the silencer is located along the side panel. If there's a slight breeze and its blowing in your direction,
you're gonna breathe the exhaust fumes.
Just inhale deeply. Aaaahhhhhhh.......
Phil
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Avoneer
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| posted on 15/9/05 at 07:36 PM |
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Not worried about the fumes after having a can right under my nose on the Avon.
Cheers,
Pat...
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However a large number of electrons were terribly inconvenienced.
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ChrisGamlin
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| posted on 19/9/05 at 09:29 PM |
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Not the best pic, but all I have at the moment, gives an idea on how far forward it is though
 
Rockingham
Chris
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