WRC motor sound
#1
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Hi all
Sorry can't find if it was already answered, but someone can explain me WHY the WRC motor sounds different than others impreza![](http://bbs.scoobynet.co.uk/confused.gif)
At the moment I got 2 explanations : different firing order or the exhaust collector with a different length ???
Thanks
Fred
Sorry can't find if it was already answered, but someone can explain me WHY the WRC motor sounds different than others impreza
![](http://bbs.scoobynet.co.uk/confused.gif)
At the moment I got 2 explanations : different firing order or the exhaust collector with a different length ???
Thanks
Fred
#2
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Think its the equal length pipes in the exhaust manifold (although Rainbowman will probably tell you its because its got a straight 4 Cosworth engine!!!!)
D.
D.
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by Diablo:
<B>Think its the equal length pipes in the exhaust manifold (although Rainbowman will probably tell you its because its got a straight 4 Cosworth engine!!!!)
D.[/quote]
Thanks guys.
Diablo : if it's a straight 4 cosworth engine
this explain that it sounds like a pity...
<B>Think its the equal length pipes in the exhaust manifold (although Rainbowman will probably tell you its because its got a straight 4 Cosworth engine!!!!)
D.[/quote]
Thanks guys.
Diablo : if it's a straight 4 cosworth engine
![](http://bbs.scoobynet.co.uk/wink.gif)
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I went to a Prodrive lecture (Hugh Kemp - Eng. Director), and he said the engine effectively was an 'air-pump' at low revs, using the manifold as a combustion chamber to keep pressure up in the spinny thing. (unitl up n running etc blah blah..)
Would that make it sound a bit different to our own beloved machines????
Would that make it sound a bit different to our own beloved machines????
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