Quote:
Originally posted by Enraged
also, if you fix the headgasket properly (new stock gasket with ARP bolts, or a metal head gasket with ARP bolts, torqued higher than the stock rating) they HG is essentially bulletproof, provided the car is in good running condition (no using 87 octane, if you have a fuel computer, dont run it lean, etc, all common sense stuff)
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you funny stock every thign is fine it just depends what you wana do with the car you wana boost big do it right
arp bolts are really only good for after market hg's really think about it what is 8 extra foot pounds gonna do for you cause that is abotut eh most turq you can give the stock hg befor it is to crushed to use and will just blow donw the road
reg compsite can got to 80 foot pounds max 72 is what toyota recomneds on there stock head bolts cause there tencil strith can be pushed ot about 80 befor they start to strech and lose there tencil xstrith but wiht stock head bolts i whould only go 72 sure beat the old 52 turq rating
now hks bead type gasket can be pushed to 90 foots pounds
hks stopper is rated for 95 foot pounds
arp bolts will only go as high as 90 foot pounds befor they go to
there max rating and that is 98 foot ponds
studs can go as high as 120 foot pounds but i for get there max rating i think that might be there max rating i kinda forget really
benfits on studs vs bolts is bolt will not give proper turq rating and will back out of the hed befor studs will and studs will alow poper head gasket alment as well vs bolts
so i hop this explains your answr when it comes to head bolts and such
oh yae the reson why 7m blow hg so easy is cause there bolt pattern they used the motor was flawed since it was made
if we had steel cast heads there whould not be prob at all cause the auml head mixed wiht steel block wiht crapp ass bolt patten
what happens is both meatl heat up at to diffent rates caus ethe head ot walk off the block when you get high in temp and then let cool
if your car runs hot then you will blow you gasket fast if you run cold as nice frosty beer at the bar then your fine
i hope this answer's all teh qestion's about the supra biggest prob
ps i am drunk but what ever