billseph Posted March 6, 2012 Share Posted March 6, 2012 Just wanted to check in with you guys to see if there are any disadvantages of putting a round port header on a square port head? I know (well I think I know) they bolt up, but will this mis-application be bad (for performance or potential exhaust leaks)? Head is an N42 on an N42 block that's mated to an automatic trans in a 72 240Z I'm thinking about buying and putting headers on. Quote Link to comment Share on other sites More sharing options...
billseph Posted March 7, 2012 Author Share Posted March 7, 2012 Alright I found what I was lookin for. A big NO, and a couple other sites seemed to essentially confirm this info... http://forums.hybridz.org/index.php/topic/71609-n42-header-on-a-n47-head/ 1 Quote Link to comment Share on other sites More sharing options...
cockerstar Posted March 7, 2012 Share Posted March 7, 2012 (edited) I was about to chime in here, but looks like you found your answer Edited March 7, 2012 by cockerstar Quote Link to comment Share on other sites More sharing options...
SHO-Z Posted March 7, 2012 Share Posted March 7, 2012 I have a square port header with new gasket $60 plus shipping. Shipping is around $50 the last time I checked. Quote Link to comment Share on other sites More sharing options...
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