 Mitsu grade 11 is 1 + 1? |
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 Mar 9 2004, 09:25 PM
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#1
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 Post Master  Group: Members Posts: 908 Joined: 7-October 03 From: Chillicothe, IL Member No.: 182  |
My exhaust manifold bolts that run through to the turbo are genuine mitsubishi bolts that say 11 on the top. As some of you saw I had a couple of them comming lose at the meet a couple of weeks ago, so today I finally got around to pulling them out and throwing in some lock washers.
I started with the two on the engine side, they were already lose and came out easy. When I started into the third one it was a bit more snug but came lose fairly easily. About half way out it got really hard. I thought to myself, give it a sec and started into the next. Half way out it did the same thing. I went back to the other and got another couple of turns on it and before long couldn't even hardly move it. I could turn it back in, but not out any farther. Grabed my GF's car as I was doing this at her house and ran to advance for some PB blaster. Gave both of them a generous squirt and they both came out. What I saw shocked me. There's now 1/4" of threads missing off of the bolts. It was completely eaten off. What's worse yet is that I had to put those bolts back in. I guess I'll have to replace them but WTF. Losing the threads on a grade 11 bolt, that's just crazy. -------------------- GVR4 866/1000 = the perpetually broken car
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Mar 10 2004, 08:09 AM
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#2
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
That's pretty common on those damn manifold to turbo bolts. Worst part is, no amount of antisieze compound is going to withstand the temperatures at that juncture.
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Mar 10 2004, 11:05 AM
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#3
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Post Master Group: Members Posts: 908 Joined: 7-October 03 From: Chillicothe, IL Member No.: 182 |
My friend said he had some 1500* locktite. I'm thinking that I'll just have to plan to replace those bolts every time I have at appart.
-------------------- GVR4 866/1000 = the perpetually broken car
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Mar 10 2004, 11:57 AM
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#4
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Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
Yeah, I tried that stuff the first time I had my manifold off. It didn't help me the next time, but ymmv. The lock washers seem to make a good difference for keeping those bolts down though.
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Mar 16 2004, 12:40 PM
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#5
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 Beginner Group: Members Posts: 43 Joined: 15-March 04 Member No.: 259 |
What you need is Cat industrial strength lock tight... um farm and fleet might have it? not really sure but it works wonders on my headers.
-------------------- Um... Looking for a 1st gen Talon or Eclipse
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