importwarrior Posted August 26, 2015 Report Share Posted August 26, 2015 Thanks for the update! Quote Link to comment Share on other sites More sharing options...
watugot369 Posted August 26, 2015 Report Share Posted August 26, 2015 I'm definitely interested Quote Link to comment Share on other sites More sharing options...
T-Fath707 Posted August 27, 2015 Report Share Posted August 27, 2015 And these are complete heads ready to be bolted on? Quote Link to comment Share on other sites More sharing options...
importwarrior Posted August 27, 2015 Report Share Posted August 27, 2015 did you read the first page? Post #5 and #11.there is some things that need to be addressed before you bolt it on.the rear water port for example. UNLESS your running a magna intake.either way you still need a magna gasket or weld the rear water port down to stock size. Other then that one litle problemit iwill bolt to the block and exhaust manifold no problem.just the intake rear water port is the problem. Quote Link to comment Share on other sites More sharing options...
NotStock88 Posted August 27, 2015 Report Share Posted August 27, 2015 Are these heads off of N/A cars? Quote Link to comment Share on other sites More sharing options...
importwarrior Posted August 28, 2015 Report Share Posted August 28, 2015 Bump for a great seller and great communication Thanks!!!! Mal Said he has 2 more of these if anyone is interested !!! Quote Link to comment Share on other sites More sharing options...
JDM Posted August 28, 2015 Author Report Share Posted August 28, 2015 ^^^^I have PM'ed people who have expressed interest in the Magna high compression M8/9 heads. I've spoken to someone quite knowledgeable on these Heads, and there is at least 1mm oversized,38mm exhaust and 46 inlet.The n/a exhaust valves are fine unless serious boost over 1 bar (14lbs+) is applied. You would upgrade tostainless steel valves together with upgraded spring rates and cam.Trilogy sells the upgraded cam & springs (or the Beehive stuff I've seen on ebay)I've kept this guy 'Boostcreep' on my watch list for the valves but never replies to my question of availability http://www.ebay.com.au/itm/290243326705?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT People with Magna inlets would benefit with these Heads the most for improved flow but as discussed with Importwarrior,some small mods are required for the standard inlet set up. Cheers, Mal Quote Link to comment Share on other sites More sharing options...
importwarrior Posted August 29, 2015 Report Share Posted August 29, 2015 Dad on here sells 1 mm bigger SS valves. WWW.enginemachineservice.com Quote Link to comment Share on other sites More sharing options...
tsiconquest88 Posted September 3, 2015 Report Share Posted September 3, 2015 (edited) These m9 heads i believe raise compression to 11:1 for those that dont know. Might want to consider that for your build. These are not like the m6 head. Edited September 3, 2015 by tsiconquest88 Quote Link to comment Share on other sites More sharing options...
importwarrior Posted September 3, 2015 Report Share Posted September 3, 2015 11:1 seems high. maybe 11:1 with flat top pistons but our stock pistons are concave lowering compression to 7:1 stock head.i would think more like 9:1 or near that area. maybe even 9.5:1. I would be surprised if it is 11. Quote Link to comment Share on other sites More sharing options...
tsiconquest88 Posted September 4, 2015 Report Share Posted September 4, 2015 (edited) Its because these m9 heads are designed for na. It was said years ago the m9 is going to raise to 11:1 on these engines. So not good for boost and why people used m6 heads (myself included). I know of only 1 person that lis running a m9 and its very recent. Curt on the facebook starion conquest group. And he even said 11:1 is what he was told it would be. Its something to think about. And high boost might be a problem though. He is giving it a shot though and glad he is to maybe prove it wasnt such a bad idea and shunned off years ago! Edited September 6, 2015 by tsiconquest88 Quote Link to comment Share on other sites More sharing options...
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