July 31, 201115 yr comment_543536 This still alive? awsome build guys! engine died after lack of oil.. been pulled to pieces and not sure how far things have gone yet.. Report
August 1, 201115 yr Author comment_543668 Yeah guys it's still alive. We had some problems with the new engine, thanks to ARP head studs reducing the amount of oil been fed to the cams. Seized the cams and torn up the cylinder head dumped all the alloy into the sump and making a shit of a mess of the bottom end. We have managed to salvage the bottom end and the new head is almost finished. Anyhow more things are been done and should be out rallying very soon. New Dash!! Report
August 1, 201115 yr comment_543714 Omg that would suck so much :bash: Least ur on top of it :happy: The dash looks so good :wink: How did ur friend go down in vic???? I heard a wisper he won it outright ????? Couple of guys from our car club came 2 and 3 i think ???? Mc nay Brothers in a vt and a holden ute :happy: Hope u can get her running soon :wink: See ya Jimi Report
August 1, 201115 yr comment_543748 whats the story with the ARP head studs reducing oil feed? is this a common problem with head studs? a 4A thing or are you just plain lucky? Report
August 2, 201115 yr comment_544052 the oil feed out of the block feeds the oil up one of the front bolt holes. About 20mm down inside that bolt hole is the oil gallery to the cams. Toyota head bolts are 8.29 thick and the hole is 10.80 (on ours away) with leaves a 2.51mm gap for the oil to flow up beside that bolt and into the oil gallery for the cams (gallery is 1.8mm). stick a 10.mm ARP head stud down there and that leaves a .4mm gap each side of the bolt for the oil to flow pass. At road speeds it was ok and allowed us to run the motor in, but when we went testing the rpm was much higher and it jumped 3 teeth on the cam belt cause the cam was starting to seize to the head. the fix is really easy. ran a rotary burr up the bolt hole to the oil gallery, taking out about 2mm. Not gonna have that problem again. Gave me a chance to upgrade a few parts as well. we've gone to a set of Kelford cams with alot more lift and better duration.better valve springs, upgraded the conrods and HPC coated the pistons. Should have it up and running by the weekend. First event for the car, which we have be accepted for, is the round of the WRC in coffs and we'll be in the allcomers section of that rally. Fingers crossed. was going to do a carbon fiber dash but iam running out of time, so it will be done later Report
August 15, 201115 yr comment_546861 Yeah good luck at Coffs. Sorry to hear about the motor. Look forward to action vids and pics :) Report
August 21, 201115 yr comment_548016 whats the story with the ARP head studs reducing oil feed? is this a common problem with head studs? a 4A thing or are you just plain lucky? Just read this , sorry to hear about engine. Something else worth mentioning about arp studs in 16v 4ag, might be common knowledge tho.. arps are slightly longer. Have seen 3 cases on different forums that dizzy collides with arp stud causing bent dizzy shaft. Didnt exactly help that head was shaved + thin headgasket. 2 of these engines were tried started. Result was broken camshaft + cam gearwheel as well. Report
August 24, 201115 yr comment_548956 I ran the same head studs in my AE82 4age bigport and didn't have any issues and it copped a lot of limiter, Must have been lucky. Report
August 25, 201115 yr Author comment_549183 Could be on to something Des, both the rally heads were/are small port, :blinks: but Tony's MR2 is a bigport and it done the same thing,:bash: I'm wondering if ARP had different batches of bolts? Report
August 31, 201115 yr comment_550320 Could be on to something Des, both the rally heads were/are small port, :blinks: but Tony's MR2 is a bigport and it done the same thing,:bash: I'm wondering if ARP had different batches of bolts? hhmm you have just solved the biggest head f&@k on a 4agte I built for a mate. The same thing happened too but the idiot owner decided to just drive it till it stopped. Pretty much turned the oil into lapping paste and minced everything including new gt2871 turbo. Stu. Report
August 31, 201115 yr Author comment_550328 Looks like ARP have an issue with their head bolts. But it's only the head bolt that feeds oil to the head, maybe using a standard bolts in that hole would fix this problem. That's exactly what happened to our engine Stu, but we caught it in time and managed to save most of the bottom end. Report
August 31, 201115 yr comment_550442 The car goes on the trailer saturday and we're off to the WRC sunday. Report
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