Head Bolt Retorquing

Benesesso · 03-26-2006, 02:40 AM

When replacing a BHG with a stock or Fel-Pro gasket, has anyone retorqued the bolts/nuts after a few heating/cooling cycles? Did they move at all? I want to determine if these non-metal gaskets crush down a bit after heating a few times.

dcrusupra · 03-26-2006, 05:20 AM

It always good to retorque them after about 500 miles. And im hoping your not reusing the stock head bolts.....

Benesesso · 03-26-2006, 05:32 AM

>"And im hoping your not reusing the stock head bolts....."<

Bought a set of ARP bolts, not studs. Discovered that 10 of the 14 won't go into the head w/o grinding clearance into the bolt area. All 4 end bolts go in fine. So I used 4 of the ARP's and 10 stock bolts--all just torqued tonight to 72 ft. lb.

I really don't think the ARP bolts/studs solve anything. The stock bolts don't stretch (other than elastically just like the ARP's). The stock gasket crushes over time/heat and that's why the bolts get loose.

Anyone ever BREAK a stock bolt?

Levi1717 · 03-27-2006, 02:30 AM

yes i had my hg changed on my 87 when it had like 190,000 on it and the bolts were all broke, striped, and streched to shit.

mrnickleye · 03-28-2006, 06:32 AM

^^ "I really ought to sell both Supras and get something else"

NO !! ......... hang in there !!

ddmcse · 03-28-2006, 11:38 AM

toyota really did "blow it" with this engine

1988gte · 03-29-2006, 08:42 AM

Quote:

Originally Posted by Benesesso

>"And im hoping your not reusing the stock head bolts....."<

Bought a set of ARP bolts, not studs. Discovered that 10 of the 14 won't go into the head w/o grinding clearance into the bolt area. All 4 end bolts go in fine. So I used 4 of the ARP's and 10 stock bolts--all just torqued tonight to 72 ft. lb.

I really don't think the ARP bolts/studs solve anything. The stock bolts don't stretch (other than elastically just like the ARP's). The stock gasket crushes over time/heat and that's why the bolts get loose.

Anyone ever BREAK a stock bolt?

wow i didnt know that, bad gaskets or lots of miles then? are studs better?

ddmcse · 03-30-2006, 02:57 AM

if you can do the studs do them instead of bolts .

be warned that when studs are on the head wil be a monster to get back on if the block is still in the engine

Isphius · 11-07-2006, 03:49 PM

very old thread...but do the arp studs go in while the head is on? or is it possible to get the head over the studs while the block is still in the car, if you put the studs in the block first? I just got my HG set and studs, so someone respond quick!

03-26-2006, 02:40 AM	#1
Benesesso 3" Exhaust Join Date: Nov 2005 Location: Phoenix, AZ Posts: 145	Head Bolt Retorquing When replacing a BHG with a stock or Fel-Pro gasket, has anyone retorqued the bolts/nuts after a few heating/cooling cycles? Did they move at all? I want to determine if these non-metal gaskets crush down a bit after heating a few times. __________________ "You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein 1988 and 1990 Turbo Supras

03-26-2006, 05:20 AM	#2
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	It always good to retorque them after about 500 miles. And im hoping your not reusing the stock head bolts..... __________________ New Rebuild My CarDomain

03-26-2006, 05:32 AM	#3
Benesesso 3" Exhaust Join Date: Nov 2005 Location: Phoenix, AZ Posts: 145	>"And im hoping your not reusing the stock head bolts....."< Bought a set of ARP bolts, not studs. Discovered that 10 of the 14 won't go into the head w/o grinding clearance into the bolt area. All 4 end bolts go in fine. So I used 4 of the ARP's and 10 stock bolts--all just torqued tonight to 72 ft. lb. I really don't think the ARP bolts/studs solve anything. The stock bolts don't stretch (other than elastically just like the ARP's). The stock gasket crushes over time/heat and that's why the bolts get loose. Anyone ever BREAK a stock bolt? __________________ "You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein 1988 and 1990 Turbo Supras

03-27-2006, 02:30 AM	#4
Levi1717 3" Exhaust Join Date: Sep 2005 Location: Corinth, Maine Posts: 116	yes i had my hg changed on my 87 when it had like 190,000 on it and the bolts were all broke, striped, and streched to shit. __________________ 87 N/A with a new JDM 7mge. Looking for a 7mgte

03-28-2006, 06:32 AM	#5
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	^^ "I really ought to sell both Supras and get something else" NO !! ......... hang in there !! __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

03-28-2006, 11:38 AM	#6
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	toyota really did "blow it" with this engine __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

03-30-2006, 02:57 AM	#8
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	if you can do the studs do them instead of bolts . be warned that when studs are on the head wil be a monster to get back on if the block is still in the engine __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

11-07-2006, 03:49 PM	#9
Isphius 500whp yet? Join Date: Nov 2005 Location: Long branch, NJ Posts: 1,006	very old thread...but do the arp studs go in while the head is on? or is it possible to get the head over the studs while the block is still in the car, if you put the studs in the block first? I just got my HG set and studs, so someone respond quick! __________________ Yay the supra assistant is gone!!! WEEE!!

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