oldmanZ Posted November 10, 2007 Share Posted November 10, 2007 :mrgreen:Howdy to all. New to the forum. Embarrasssed as well-The machinist lost the instruction sheet with the ARP main studs. Please help on correct install (lube on end going into block?) and torque spec. (L28). Thanks Darrel Quote Link to comment Share on other sites More sharing options...
MONZTER Posted November 11, 2007 Share Posted November 11, 2007 60ft/lbs torque with ARP moly lube Oil or lube in the block after chasing threads. ARP moly lube on threads, nuts and washers. Quote Link to comment Share on other sites More sharing options...
oldmanZ Posted November 13, 2007 Author Share Posted November 13, 2007 Thanks for the help. Only have until March to get the new engine completed!! Darrel Quote Link to comment Share on other sites More sharing options...
TimZ Posted November 13, 2007 Share Posted November 13, 2007 60ft/lbs torque with ARP moly lube Oil or lube in the block after chasing threads. ARP moly lube on threads, nuts and washers. Thanks Jeff. I think I'm going to need this soon, too. Is there a similar spec that assumes using motor oil instead of Moly? Quote Link to comment Share on other sites More sharing options...
MONZTER Posted November 14, 2007 Share Posted November 14, 2007 The instruction sheet said 60ft/lbs only with ARP moly lube. There was no other spec for oil. Jeff Quote Link to comment Share on other sites More sharing options...
naviathan Posted November 14, 2007 Share Posted November 14, 2007 Thanks for the help. Only have until March to get the new engine completed!! Darrel Only until March? Sounds like plenty of time to me. Quote Link to comment Share on other sites More sharing options...
jeffer949 Posted November 14, 2007 Share Posted November 14, 2007 oil is no substitution for moly past. it allows you to get the proper toque by taking away the friction between the nut and the stud. if you dont have the arp stuff you should be able to find it at a parts store. i know any decent motorcycle shop should have it in stock.. Quote Link to comment Share on other sites More sharing options...
oldmanZ Posted November 14, 2007 Author Share Posted November 14, 2007 Hey Naviathan, March seems like a ways off to me to. BUT, I realized I still need to fix the brakes (ran my last race with front brakes only!), finish installing the new fuel cell.... And the list goes on. I also want to finish my old Celica project by summer as well. But we love long nights in the garage. Your post says eastern Carolina. Where? I was born in Fayettville and have family all over. Wish I was there and not in COLD Washington!!! Darrel --Turbocharging 2rz in my 1973 Celica and my son's ka24e-1989 240sx. Working at a Subaru store has benefits (buy turbo's and intercoolers from customers who upgrade-stupid cheap!) Quote Link to comment Share on other sites More sharing options...
oldmanZ Posted November 14, 2007 Author Share Posted November 14, 2007 Hey Naviathan, March seems like a long time to me as well. BUT, I still have to finish installing the new fuel cell, repair the brakes (ran my last race with no rear brakes-scary but fun), finish the engine...I also want to get my 1973 Celica project done by summer (2rz turbo swap). Eastern Carolina? I was born in Fayettville and have family all over. Wish I was there!!!! It is cold at night in the garage here in Washington!! Darrel Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted November 14, 2007 Share Posted November 14, 2007 whoops, I think I may have slipped on something, what is the head studs torque with ARP studs and lube? Quote Link to comment Share on other sites More sharing options...
oldmanZ Posted November 14, 2007 Author Share Posted November 14, 2007 Sorry about the 2 posts. I did not think the first one went thru-not so computer smart. As for head stud torque, I can check tonight (the head studs are at home) Darrel Quote Link to comment Share on other sites More sharing options...
oldmanZ Posted November 15, 2007 Author Share Posted November 15, 2007 8-)savageskaterkid, Checked the ARP head stud kit I have and the head stud set says torque to 60. Hope this helps, Darrel Quote Link to comment Share on other sites More sharing options...
TimZ Posted November 15, 2007 Share Posted November 15, 2007 8-)savageskaterkid, Checked the ARP head stud kit I have and the head stud set says torque to 60. Hope this helps, Darrel Again, is this with oil or moly? The spec that I received with my head stud kit gave both numbers, and they were quite a bit different. It sounds like they may have changed their spec, but the 60lb-ft number is closer to the number I had for motor oil. Now that I am looking at it, 60lb-ft with moly would be getting pretty close to the yield strength of the stud, according to the spec they supplied with mine. Quote Link to comment Share on other sites More sharing options...
oldmanZ Posted November 15, 2007 Author Share Posted November 15, 2007 The instructions indicated torque to 60 with supplied moly lube. Just opened the box last night. Darrel Quote Link to comment Share on other sites More sharing options...
Omar Posted November 17, 2007 Share Posted November 17, 2007 not to steel your thread but whats the torque spec for the regular studs, i dont think they are the same are they? Quote Link to comment Share on other sites More sharing options...
TimZ Posted November 17, 2007 Share Posted November 17, 2007 not to steel your thread but whats the torque spec for the regular studs, i dont think they are the same are they? The stock fasteners are bolts, not studs. The main cap bolt torque spec is 33-40 lb-ft. Quote Link to comment Share on other sites More sharing options...
Omar Posted November 17, 2007 Share Posted November 17, 2007 The stock fasteners are bolts, not studs. The main cap bolt torque spec is 33-40 lb-ft. main cap? head to block specs is what i need. maybe thats just different terminology but idk lemmie know. thanks Quote Link to comment Share on other sites More sharing options...
Administrators RTz Posted November 17, 2007 Administrators Share Posted November 17, 2007 Again, is this with oil or moly? The spec that I received with my head stud kit gave both numbers, and they were quite a bit different. It sounds like they may have changed their spec, but the 60lb-ft number is closer to the number I had for motor oil.Now that I am looking at it, 60lb-ft with moly would be getting pretty close to the yield strength of the stud, according to the spec they supplied with mine. Tim, I just opened a new box of ARP head studs and the paperwork specifies 60 with moly lube. main cap? head to block specs is what i need. maybe thats just different terminology but idk lemmie know. Not different terminology... different part. The main cap is the cast piece that fastens the crankshaft in, and contains the lower bearing half. Stock head bolt torque spec (done in three stages)... 29 lb/ft, 40 lb/ft, and finally 60. There is a recommended sequence, so either do some searching here or pick up a Haynes manual, FSM, etc, etc. Quote Link to comment Share on other sites More sharing options...
TimZ Posted November 17, 2007 Share Posted November 17, 2007 Tim, I just opened a new box of ARP head studs and the paperwork specifies 60 with moly lube. Thanks for confirming - I was suspecting that perhaps they had changed the spec, so I was avoiding posting my old spec and causing even more confusion. Not different terminology... different part. The main cap is the cast piece that fastens the crankshaft in, and contains the lower bearing half. Okay, so now I need still more clarification. I thought that the original question was about the main studs, not the head studs. Soooo... was that correct, and was Jeff's answer referring to the main studs or the head studs? Main stud torque was the one I was looking for, btw. Also - for the stock head bolts, I think the final torque was different depending on which bolts you had. As I recall the early L24 spec was 55lb-ft, somewhere in between the L24 and L28 it changed to 60 lb-ft, and then the turbo head bolts were 65lb-ft. If you don't know what you have, the 60lb-ft number should be safe, but if you are getting new bolts, you should just get the turbo bolts. Quote Link to comment Share on other sites More sharing options...
MONZTER Posted November 17, 2007 Share Posted November 17, 2007 Hi Tim, My specs were for the original question, main cap studs. Jeff Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.