Alternator bracket bolt
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From: Omaha
Alternator bracket bolt
I discovered as I was doing the 3G alternator conversion on my 4.9 that the bolt going into the lower alternator bracket doesn't actually thread into the hole. The PO must have just slid one in there and tightened everything else down. I've tried every bolt in my garage now and looked all over the internet and still cannot find the size. If somebody knows this information or could pull theirs out and measure it that would be so awesome.
Edit: just to clarify, the hole in question is the hole on the engine block where the lower tension arm for the alternator connects. It's right next to the timing marks on the main pulley.
Edit: just to clarify, the hole in question is the hole on the engine block where the lower tension arm for the alternator connects. It's right next to the timing marks on the main pulley.
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The alternator came out of a 95 taurus but the hole I'm speaking of is the one that my tension arm bracket connects to on the engine block
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Might just have to do that. The part of the hole I can easily see doesn't show any threads at all but it feels as if there's threads deeper into the hole. I thought about just welding a stud into it? I've never used a thread insert before.
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As previously mentioned the hole in question is NOT on the alternator. I'm aware of the metric bolt I need for the alternator.
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It's all good. After reading my initial description I realized that I wasn't very clear. I hope there's no bolt broken in there but I can't be sure as of now. When I get home from work I'll lay under it in the slushy mess that is omaha Nebraska and do a closer inspection. It seemed as though some of the smaller bolts went pretty darn far into there.
pedant
Joined: Jan 2008
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From: EXTREME southwest CT
All drivetrain bolts of this era were fractional.
Willing to bet 3/8-16
No doubt the PO's hack with an undersized bolt could have damaged the threads.
have you tried chasing it with a bottoming tap?
Willing to bet 3/8-16
No doubt the PO's hack with an undersized bolt could have damaged the threads.
have you tried chasing it with a bottoming tap?
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I'm pretty sure it's supposed to be a 5/16, but couldn't find my 5/16 tap. Thanks for your help with this thread! Everything else on my 3G upgrade went ultra smooth. Hopefully I won't be needing any more jump starts now when I run my amplifier!
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