head bolt idea - Page 2

Green7mgte · 12-13-2010, 09:48 PM

i have a stripped exhaust bolt. i just used a concrete lag bolt lol..

907mge · 12-13-2010, 09:51 PM

What ever works for you. Me personally, am a bit of a perfectionist and that would bother me.

Green7mgte · 12-15-2010, 01:13 AM

it does work. maybe ill get around to doing it the right way come summer. I was holding off until i slapped on another exhaust header. but the exhaust leak was driving me crazy

cre · 12-16-2010, 05:18 AM

What the f#$% are you people talking about?!? I think we've got a couple conversations going on here or something.

FIRST, if the HG is blown there's no point in replacing the bolts one at a time... even if it weren't a HORRIBLE idea.... you still have to replace the damned HG and check for warpage.

SECOND, I wouldn't run a helicoil in 90% of the blocks on the market, not for the head bolt part of the equation.... there's just not enough meat in the surrounding material for me to consider it reliable after I drill the hole 3 to 4mm wider for the insert.

THIRD, Green, from what you're saying I assume you're actually talking about the manifold fastener holes (particularly the exhaust side). Two passes here is fine, on the head bolts or studs I recommend 3 or more passes at small increments but not so small that striction hits.

FOURTH, 72ft lbs for head bolts and 95 for studs... IIRC.

Green7mgte · 12-19-2010, 08:40 PM

3 passes you say? ill write that down if i have to take my head off again.

yea i was talking about the exhaust manifold

12-13-2010, 09:48 PM	#11
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	i have a stripped exhaust bolt. i just used a concrete lag bolt lol.. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

12-15-2010, 01:13 AM	#13
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	it does work. maybe ill get around to doing it the right way come summer. I was holding off until i slapped on another exhaust header. but the exhaust leak was driving me crazy __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

12-16-2010, 05:18 AM	#14
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	What the f#$% are you people talking about?!? I think we've got a couple conversations going on here or something. FIRST, if the HG is blown there's no point in replacing the bolts one at a time... even if it weren't a HORRIBLE idea.... you still have to replace the damned HG and check for warpage. SECOND, I wouldn't run a helicoil in 90% of the blocks on the market, not for the head bolt part of the equation.... there's just not enough meat in the surrounding material for me to consider it reliable after I drill the hole 3 to 4mm wider for the insert. THIRD, Green, from what you're saying I assume you're actually talking about the manifold fastener holes (particularly the exhaust side). Two passes here is fine, on the head bolts or studs I recommend 3 or more passes at small increments but not so small that striction hits. FOURTH, 72ft lbs for head bolts and 95 for studs... IIRC. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

12-19-2010, 08:40 PM	#15
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	3 passes you say? ill write that down if i have to take my head off again. yea i was talking about the exhaust manifold __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

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12-13-2010, 09:51 PM	#12
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	What ever works for you. Me personally, am a bit of a perfectionist and that would bother me.