Inlet port sizes for 600 bhp on cossie head??
#1
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Inlet port sizes for 600 bhp on cossie head??
Im interested in a bit of info on cossie heads.
From what i seem to remember when i measured them stock cossie inlet ports are 24 x 48? mm at the gasket face.
What size would you expect to see on a head destined for a 5-600bhp car? Would the valves be increased in size?
From what i seem to remember when i measured them stock cossie inlet ports are 24 x 48? mm at the gasket face.
What size would you expect to see on a head destined for a 5-600bhp car? Would the valves be increased in size?
#3
Happily retired
You will get the wrong answer asking that question its the biggest error that Tuners make getting port sizes wrong.
Best to say my valves are standard & port sizes not bigger than the ones quoted above & that made 838bhp so be warned go to someone who knows what its all about not the average punter on here.
Best to say my valves are standard & port sizes not bigger than the ones quoted above & that made 838bhp so be warned go to someone who knows what its all about not the average punter on here.
#4
*** Sierra RS Custard ***
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I dont believe there is a right or wrong answer, it all depends on the rest of the spec.
As rod mentions, he is getting massively more power than that on what most people would consider a fairly small head, but then he has a MASSIVE turbo.
Trying to get 600bhp out of a 600bhp turbo will probably require bigger ports than trying to get 838bhp out of a 900bhp turbo etc.
I agree with Rod that its easy to get carried away though, especially when selling things to people as people want to "see" the difference when they buy a head.
As rod mentions, he is getting massively more power than that on what most people would consider a fairly small head, but then he has a MASSIVE turbo.
Trying to get 600bhp out of a 600bhp turbo will probably require bigger ports than trying to get 838bhp out of a 900bhp turbo etc.
I agree with Rod that its easy to get carried away though, especially when selling things to people as people want to "see" the difference when they buy a head.
#5
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i recall a post by Karl some time ago where he stated that his std 500bhp head had standard sized holes at the head faces
#7
PassionFord Post Whore!!
I dont believe there is a right or wrong answer, it all depends on the rest of the spec.
As rod mentions, he is getting massively more power than that on what most people would consider a fairly small head, but then he has a MASSIVE turbo.
Trying to get 600bhp out of a 600bhp turbo will probably require bigger ports than trying to get 838bhp out of a 900bhp turbo etc.
I agree with Rod that its easy to get carried away though, especially when selling things to people as people want to "see" the difference when they buy a head.
As rod mentions, he is getting massively more power than that on what most people would consider a fairly small head, but then he has a MASSIVE turbo.
Trying to get 600bhp out of a 600bhp turbo will probably require bigger ports than trying to get 838bhp out of a 900bhp turbo etc.
I agree with Rod that its easy to get carried away though, especially when selling things to people as people want to "see" the difference when they buy a head.
Mad ades head size is the same as Rods and guess what it makes on a 600hp turbo.
Mark
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