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thechuckster
Forums Junkie


Location:
Brisbane
Registered:
February 2003
 
Re: An actual technical discussion! Wed, 03 March 2004 13:46 Go to previous messageGo to previous message
my (limited) understanding of turbo cams is that you:
-want to improve intake breathing - either thru duration or lift
-want to minimise exh/int overlap so you don't waste unburnt, compressed gases out the exhaust (no point having the turbo do all that work for nothing)

so i would guess that my cam has:
-slightly higher lift - exh and int
-longer duration for int
-faster exh closing

the longer intake duration makes for the sluggish motor (sub-optimal manifold vacuum when not on boost) at low revs

the crux is finding the best balance between better breathing and low-end performance - i think that once on boost, a whole lot of other factors (int and exh manifold designs, turbo trim, wastegate, dump pipe) have a greater influence on engine behaviour.
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SubjectPosterDate
Read Message   An actual technical discussion! 7M-BrisbaneWed, 03 March 2004 03:33
Read Message   Re: An actual technical discussion! adamb131Wed, 03 March 2004 03:48
Read Message   Re: An actual technical discussion! gianttomatoWed, 03 March 2004 03:51
Read Message   Re: An actual technical discussion! onejayzedWed, 03 March 2004 07:01
Read Message   Re: An actual technical discussion! Jonny2TGWed, 03 March 2004 08:38
Read Message   Re: An actual technical discussion! 7M-BrisbaneWed, 03 March 2004 12:00
Read Message   Re: An actual technical discussion! Jonny2TGWed, 03 March 2004 12:17
Read Message   Re: An actual technical discussion!  thechucksterWed, 03 March 2004 13:46
Read Message   Re: An actual technical discussion! RWDboyWed, 03 March 2004 13:53
Read Message   Re: An actual technical discussion! gianttomatoWed, 03 March 2004 21:47
Read Message   Re: An actual technical discussion! gold28Thu, 04 March 2004 05:28
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