cabrioman 6 Posted March 14, 2012 Report Share Posted March 14, 2012 im looking to go 1mm over size with my mine .... Link to post Share on other sites
Daverse 175 Posted March 14, 2012 Report Share Posted March 14, 2012 sorry to hijack, but you couldnt go 2mm on both valves could you? would've thought the seats would collide? Link to post Share on other sites
Lowlifedubber 9 Posted March 15, 2012 Author Report Share Posted March 15, 2012 sorry to hijack' date=' but you couldnt go 2mm on both valves could you? would've thought the seats would collide? [/quote']According to Shimmel website you can go up to 36mm on the exhaust and 42mm on the inlet.2mm oversize each side.Although im guessing id need a lot of f/i for that much so im thinking go straight to 1mm. Link to post Share on other sites
FishWick 21 Posted March 15, 2012 Report Share Posted March 15, 2012 Yeah I think +2mm is about your lot really. Good luck getting in touch with Mahle! They practically shut down for half the year to focus on making race pistons. The retail market gets second fiddle.The schimmel BV kit is good as already mentioned and the stuff I used. Well, I had Schimmel send over a built head, which worked out at about £1000 inc shipping etc. That was a good few years ago though! I wouldn't use his valve springs though as they're a bit hard on the cam lobes I've found and extra load the cam chains etc. Standard valve springs are OK to 7200rpm ish. Link to post Share on other sites
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