clairetoo
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 posted on 20/3/10 at 09:28 PM |
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Exhaust question
I am about to start building a whole new exhaust system for my car - but I'm a bit undecided as to what diameter pipes to use .
The manifold plates have been made to fit 1 5/8 , I was planning on dropping to 1 1/2 for the primaries , mainly due to lack of space , and allso I
cant find 1 5/8 bends on fleabay at the mo'...........
But..........what size should I make the rest of the system ? It's a 2.5 V6 , making something close to 200 BHP , and revving to 8000 .
I currently have the cast iron `log' manifolds going into 1 7/8 , with a link pipe under the engine (which I will repeat on the new system )
I am torn between 2 or 2 1/4 ? ?
Its cuz I is blond , innit
Claire xx
Will weld for food......
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DanP
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| posted on 20/3/10 at 10:29 PM |
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There is a pretty good calculator here: www.headerdesign.com (you need to create a login which is free). It should tell you primary and secondary
lengths and diameters.
I would guess at 1.5" primaries and 2" secondaries would be what it suggests.
There are a few other calculators around on the net too.
Cheers,
Dan
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Chippy
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| posted on 20/3/10 at 11:33 PM |
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Hi Claire, I know mine is a bit larger, 2.9 against your 2.5, but I found that 15/8"x 20" long primaries and 2" secondaries worked
really well, (238 BHP, 250 Lbs torque), and I only rev to 6100, (grenades over that, :-) ). Unfortunately being a se7en type car couldn't run a
ballance pipe. HTH Ray
Edit to add
DanP your link doesn't generate a web page
[Edited on 20-3-10 by Chippy]
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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MikeR
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| posted on 21/3/10 at 12:04 AM |
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hmmm, i posted an answer linking to the excel spreadsheet Dave Ashurst made. If you do a search on locostbuilders in google with words like dave,
excel, spreadsheet, exhaust etc you'll find it eventually.
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Confused but excited.
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| posted on 21/3/10 at 02:38 PM |
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quote:
DanP your link doesn't generate a web page
[Edited on 20-3-10 by Chippy]
That's 'cos it ain't a link.
Tell them about the bent treacle edges!
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DanP
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| posted on 21/3/10 at 08:19 PM |
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hmm yeah the website appears to be down, google cached version of it in february so hopefully it is just down over the weekend rather than
permanently.
Cheers,
Dan
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Chippy
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| posted on 21/3/10 at 11:24 PM |
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quote:
That's 'cos it ain't a link.
Ah! but it is if you copy and put in Google search and hit the button, which is what I did,  Cheers Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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Madinventions
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| posted on 21/3/10 at 11:36 PM |
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I get all my exhaust parts from OJZ engineering:
Link
Ed.
Mojo build diary: http://www.madinventions.co.uk
Solo music project: Syrrenfor http://www.reverbnation.com/syrrenfor
View my band website:
http://www.shadowlight.org.uk
http://www.eastangliankitcars.co.uk/
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