loose exhaust bolts

joel w · 10-09-2005, 05:05 AM

anyone else have problems with exhaust manifold bolts to the head loosening up on the 7m-gte? ive tried hightemp locktight? whats the torque specs?

supraxe · 10-09-2005, 07:03 AM

400 kpcm or 39 Nm locktight isn?t a good idea insert nut is better.

rnoswal · 10-10-2005, 12:53 AM

Best way I think is to put helicoils in each stud hole on the exhaust and put ARP studs there and then get some good high temp lock nuts. The stock holes are so fragile and need anti seize on them each time you take a stud out or one comes out with the nut, or the aluminum comes out with it.

Russ

joel w · 10-10-2005, 01:26 AM

ya ive had to heli coil one already a few yrs ago. thanks for the info, may just do em all now

GreenChevelleSS · 10-10-2005, 03:31 AM

All the nuts on mine are rusted on the studs, all the studs came out but 2 when i took the manifold off.....

10-09-2005, 05:05 AM	#1
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	loose exhaust bolts anyone else have problems with exhaust manifold bolts to the head loosening up on the 7m-gte? ive tried hightemp locktight? whats the torque specs?

10-09-2005, 07:03 AM	#2
supraxe Stock Join Date: Sep 2005 Location: Germany Bremen BecKstown Posts: 22	400 kpcm or 39 Nm locktight isn?t a good idea insert nut is better. __________________ German Tornado on Highway with 270 km/h His name is Supra!!!!!!!!!No speedlimit!!!!!!!!!

10-10-2005, 03:31 AM	#5
GreenChevelleSS 3" Exhaust Join Date: Oct 2005 Location: okiehoma USA Posts: 70	All the nuts on mine are rusted on the studs, all the studs came out but 2 when i took the manifold off..... __________________ 1990 Toyota Supra Turbo 7M-GTE 1970 Chevrolet Chevelle SS 396 1996 Chevrolet Silverado Z71 www.cardomain.com/id/3115ultima

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10-10-2005, 12:53 AM	#3
rnoswal Lexus & 550's Join Date: Apr 2005 Location: Bossier City LA Posts: 556	Best way I think is to put helicoils in each stud hole on the exhaust and put ARP studs there and then get some good high temp lock nuts. The stock holes are so fragile and need anti seize on them each time you take a stud out or one comes out with the nut, or the aluminum comes out with it. Russ

10-10-2005, 01:26 AM	#4
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	ya ive had to heli coil one already a few yrs ago. thanks for the info, may just do em all now