Coldspark Posted April 1, 2011 Share Posted April 1, 2011 Replacing my head on my 5m. For some awesome reason i could only get 7 new bolts from nz (need 7 more). So do i 1. Use my old one's that look the best 2. Or get 7 from Japan Quote Link to comment Share on other sites More sharing options...
mjrstar Posted April 1, 2011 Share Posted April 1, 2011 Details on specific torquing procedure, if they are torque to yield then please replace. If not then just re-use. you may also find that there are after-market replacement studs that are a similar sizing (minimal grip length difference) so it may be worth digging a little deeper. There will be other shit that interchanges between different flavour engines. Quote Link to comment Share on other sites More sharing options...
KKtrips Posted April 1, 2011 Share Posted April 1, 2011 with M series head gasket failures as a know issue I would do any of these things Get full set of ARP head studs and nuts Get any motor other than an M Get the other 7 bolts from Japan Measure the bolts with a micrometer and use the 7 shortest... Quote Link to comment Share on other sites More sharing options...
Yowzer Posted April 1, 2011 Share Posted April 1, 2011 Yah, go ARP if you want it to last a bit longer. Otherwise just mash the old ones back in, with a bit of superglue around the gasket to seal it up. How can you not get a full set? That sounds rather strange.. Quote Link to comment Share on other sites More sharing options...
mjrstar Posted April 1, 2011 Share Posted April 1, 2011 Standard old Toyota BS, I had mega issues getting shit for my boat anchor/1G (like $2900 for a set of rings) But I would not pay for ARP unless they are A: Cheap, or B: you are trying to extract mega HP from the engine. In the end it's just a threaded stud and a certain length, there WILL be other options out there. You might find a 4age/1jz/4g63/whatever has the same size stud which will do the trick. Quote Link to comment Share on other sites More sharing options...
Coldspark Posted April 1, 2011 Author Share Posted April 1, 2011 lol still gotta find the (correct) torque settings thinks its 75 lbs Think ill give the old ones a measure and see how bad they are. cant be stuffed waiting for any more blots but the old bolts do look pretty alright Yah, go ARP if you want it to last a bit longer. Otherwise just mash the old ones back in, with a bit of superglue around the gasket to seal it up.How can you not get a full set? That sounds rather strange.. Iv got no idea why they only had 7 , piff it toyota Quote Link to comment Share on other sites More sharing options...
KKtrips Posted April 1, 2011 Share Posted April 1, 2011 Ex Japan would be only 7-14 days Quote Link to comment Share on other sites More sharing options...
mjrstar Posted April 1, 2011 Share Posted April 1, 2011 ^^ and about a squillion dollars?? (well unless you know someone at Toyota) Chuck up the thread pitch, diameter and grip length etc.... Quote Link to comment Share on other sites More sharing options...
Coldspark Posted April 1, 2011 Author Share Posted April 1, 2011 Ex Japan would be only 7-14 days lol yeah im pretty inpatient what would be the max tolerance for the old bolts, compared to the new ones? ^^ and about a squillion dollars?? (well unless you know someone at Toyota)Chuck up the thread pitch, diameter and grip length etc.... yeah im trying to find it now Quote Link to comment Share on other sites More sharing options...
Coldspark Posted April 1, 2011 Author Share Posted April 1, 2011 http://www.cygnusx1.net/Supra/Library/T ... px?S=B&P=2 edit: this is better http://www.cygnusx1.net/Supra/Library/T ... ?S=EM&P=18 Quote Link to comment Share on other sites More sharing options...
mjrstar Posted April 1, 2011 Share Posted April 1, 2011 If they are a straight 75 FTLBS (which seems a bit high to me) the shortest ones should be ok... It's when they suggest 45ft lbs then 90 degrees rotation that you really need to chuck them in the bin.. I have re-used my 1G ones in the past and run 20 psi boost with no failures, although i realise M series do carry a bit of a BHG stigma with them, also are you trying to remedy a past BHG? or is it a head replacement for fun? Quote Link to comment Share on other sites More sharing options...
Coldspark Posted April 1, 2011 Author Share Posted April 1, 2011 sounds good to me lol I brought a celica with a already crack head. Iv got a replacement/good head to go on I just want this going for nats Quote Link to comment Share on other sites More sharing options...
mjrstar Posted April 1, 2011 Share Posted April 1, 2011 ^^ link doesn't really tell us much?? Well if it's non turbo and the cooling system is in ok nick, just rock the old bolts I say.. But then again it's not going to be me stranded on the side of the road with steam pouring from the bonnet.. more likely head softness and warpage will be an issue compared to stretched head bolts not maintaning the torque.. Quote Link to comment Share on other sites More sharing options...
nick_m Posted April 1, 2011 Share Posted April 1, 2011 What about (and this might sound a little dark, but definitely done more than you'd think) Socket head cap screws. They are available in metric and metric fine and are 10.9 or 12.9 grade depending on size. Cheap as f*ck, strong and you could torque them up higher than factory quite happily I'd say. I can give you there Unbrako catalog in PDF Form which lists the torque to yield seating torques for each size just to be safe before you went and brought them. As long as there torque to yield torque is higher than factory torque setting and you can get them in the right length I'd say you'd be fine. Your call, But i'm guessing they would cost less for 14 SHCS than it probably did for one of your toyota studs haha. Quote Link to comment Share on other sites More sharing options...
Dell'orto Posted April 1, 2011 Share Posted April 1, 2011 True, but a say M10 cap screw would only have a what, 8mm socket? Might be tricky getting 75+ft/lbs on one without snapping a hex key. Quote Link to comment Share on other sites More sharing options...
fulloc Posted April 1, 2011 Share Posted April 1, 2011 Why not just ring NZ Gaskets, ACL or STA. They all sell replacement aftermarket head bolts pretty cheap. Thats gotta be better than re-using old ones. Quote Link to comment Share on other sites More sharing options...
Spencer Posted April 1, 2011 Share Posted April 1, 2011 For a 5M with no boost, re-use them if they are in spec, havnt cheked the link above but the M series manual has the measurements Quote Link to comment Share on other sites More sharing options...
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