Jono.C Posted January 7, 2010 Report Posted January 7, 2010 Yes i know its been mentioned before but the treads are old so anyway.. I'm thinking of putting a 3kc head on 4kc is it only the Bigport head which increases performance or any head? The port Size on the 3K head I'm looking at is 25mm ish I'm guessing its not a bigport? will this have much of a power increase? An will this be worth the $80 i'd be paying for the head? Cheers (: Quote
Evan G Posted January 7, 2010 Report Posted January 7, 2010 putting a 3k head on a 4k motor increases compression so why not shave down the 4kc head? 3k is older and welsh plugs seam to give people problems Quote
snot35 Posted January 7, 2010 Report Posted January 7, 2010 It could well increase the compression a little too much depending on what's been done to the head. Plus the ports are tiny. I think the 4k ones are generally bigger, or you could port it. Go with Evan's suggestion. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.