Theo,
I too have have used a Heli-Coil for this purpose. Actually a local
shop put it in for me and its holding great.
Don't forget to greese up the new bolts so you they don't break off
like mine did whem I tried to remove the bolt. My neighbors probably
heard some new words &#%+ that day.
Regards,
Frank Bonifazi
B9472682LRXFE
Subject: Re: Thermostat housing
Author: Non-HP-craig (craig@p-d-g.com) at hp-ftcollins,mimegw2
Date: 10/1/98 10:44 AM
Hello Theo,
If I were you, I'd try to install a Heli-coil in the bad bolt hole. You can buy
a kit for
different sizes at most large auto stores. The process is to drill the hole a li
ttles
larger and use the tap supplied with the kit to tap the hole slightly larger. Yo
u then
screw in a coil that looks like a spring and you are then back to the original,
desired
thread size, and it is just as strong as it was originally. Takes about and hour
.
Craig Wright
Theo Smit wrote:
> So this morning the seeping thermostat housing started leaking rather more
> vigorously. The reason for the seep in the first place is that the DPO
> crossthreaded the cr*p out of the lower thermostat housing bolt, and I was
> scared to tighten things too much when I installed the thermostat (there was
> none) after getting the car here. The lower bolt that is in there is a very
> mangled 5/16 UNC. The upper fastener is a 5/16 UNF stud. My objective is to
> clean out what's there and then put a stud in so I don't remove any more threa
ds
> from the manifold.
>
> The $64000 question is, what thread was originally used on the F4B thermostat
> housing holes?
>
> Theo Smit
> tsmit@novatel.ca
> B382002705
--
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craig@p-d-g.com 4635 Viewridge Ave.
(619) 569-3484 x309 San Diego, CA 92123
fax: (619) 569-3490 http://www.p-d-g.com
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