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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » power gains of having head skimmed and ported?? » Post Reply
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miles |
posted on 22nd Oct 04 at 10:42 |
My head was skimmed 25 thou. | |
luca2020 |
posted on 22nd Oct 04 at 09:03 |
yer as miles said you can skim the head, this raises the compression ratio so will give a small gain | |
Stu_22 |
posted on 22nd Oct 04 at 08:49 |
VE-?? | |
James R |
posted on 22nd Oct 04 at 08:41 |
quote: Porting will increase the VE of the engine, so will make it more power as more air can be sucked in and pushed out. | |
miles |
posted on 21st Oct 04 at 20:58 |
Skim will increase power as it raises the compression. How much power would obviously depend on how much is skimmed. | |
ed |
posted on 21st Oct 04 at 17:36 |
It doesn't really increase power. It makes the engine rev freely, with less restriction, so will make any other mods you have done on the engine work to a higher standard. | |
James R |
posted on 21st Oct 04 at 11:39 |
Courtney quotre 15% gains from there flowed head. But more realistic is roughly 10% power gain, the mathcing of inlet to head isn't what gives the gains it's the reprofiling of the ports shape around the valve throat and exhaust radius. If your thinking of not doing anythign else it's not really worth the £300-400 it will cost, but if you inted to tune things futher then it's a good base to go from, other wise a tubular manifold would improve things much more for you. | |
JJ |
posted on 21st Oct 04 at 09:35 |
Not much to be honest... get an inlet manifold to go with it and match the ports up... also... a unichip would further improve things as well as an exhaust manifold :thumbs: should be lookin 20bhp+ | |
messham11 |
posted on 21st Oct 04 at 09:32 |
Just wondering what power gais im lookin at on my 1.4 16v if i have the head skimmed and ported?? |