m5nut 0 Posted December 9, 2007 A friend ordered head bolts for me through Dingbro and was asked what length bolts I needed. Apparently there are 2 types, one for a skimmed head and one for standard. Seeing as my head has been lightly skimmed (not 8mm's worth) I went for the shorter bolts Well I've got them and they are a fair bit shorter (8mm)/are not torx heads but hex and have no stretchable areas. Are these correct as I thought I needed the stretch in the bolts for a reason. Also if I'm just using the normal thickness gasket, that comes with a head gasket set, will the bolts be long enough to get a good purchase on the threads? Really need someone who knows what the f**k they are talking about to enlighten me. P.S. went for the normal gasket to increase CR a wee bit as the head has only had a light skim. Thanks in advance! Share this post Link to post Share on other sites
ablister 31 Posted December 9, 2007 not unusual for dingbro to get things wrong but i've never been asked what size i'm needing whenever i ask for them. Should only be the one size i think. I agree withg you on needing 8mm shorter bolts just because it has been skimmed! Share this post Link to post Share on other sites
m5nut 0 Posted December 9, 2007 You reckon they should be 8mm shorter if it's been skimmed? Not sure if a few thou skim should warrant 8mm shorter bolts. Also there's the issue of them being non stretch bolts and I've never seen 205 head bolts without torx fit heads. Share this post Link to post Share on other sites
ablister 31 Posted December 9, 2007 i mean i agree with you about not needing 8mm difference on size just because is has been skimmed. Also only ever seen torx headbolts for xu engines (t55) too. I'd go in again and ask someone else as sounds like a mistake to me Share this post Link to post Share on other sites
wardy18 33 1 Cars Posted December 9, 2007 i got some recently and they asked if i needed torx or hex, i just said torx cause thats what was fitted previously cant see why you'd need 8mm shorter thou, more cance of strippin the threads in the alloy block as your torquein up to the same 25, 50 then 75 ft lbs but with less threads id be careful Share this post Link to post Share on other sites
m5nut 0 Posted December 9, 2007 just gonna return them and wait even longer to get this bloody engine back together again Share this post Link to post Share on other sites
pug_ham 240 3 Cars Posted December 11, 2007 The hex head bolts are for the earlier XU engines that need re-torqueing after an initial running period, these were replaced by the torx style that are single torque use only. The amount thats been skimmed off a head even with a hefty skim certainly would make you need 8mm shorter bolts! Graham. Share this post Link to post Share on other sites
