IAC housing screws
#1
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Car: 88 GTA Notchback
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: don't know
IAC housing screws
Pulled off the throttle body today to start tearing it down and clean it. Noticed there are 3 broken screws, and I am sure the others wont come out without a fight. What size screws would replacements be?
#2
Re: IAC housing screws
heating them up with a propaine torch and soaking down with pb blaster will elp loosen the snapped off ones. hopefully you have enough to grip with vice grips. IRC the are metric fine thread 4mm cant recall the length measure from under the head to the tip of the screw.
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Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: IAC housing screws
I have repaired 6 of these lately. heres how I did it, first heat it with a torch or heat gun.spray it liberally with "PB blaster". let it soak for a few hours. then you heat it again and CAREFULLY work out the remaining screws. the trick is, aluminum expands at a different rate than the steel screws. so they let go rather easily. sometimes , if your lucky. there enough of the screw left sticking up to get a vice grip on it . if not you can weld a nut to the broken screw, and get it that way (damn tedious. though) once you have them all out ,you will notice some are a bit longer than the others. you can get replacements at any well equipped fastener store. I recommend allen head replacements. I hope this helps .and good luck, youre gonna need it.
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Car: 88 GTA Notchback
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: don't know
Re: IAC housing screws
Thanks for the tips. I will give it a go this weekend. To bad the billet housings with the water jacket delete is so expensive.
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Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: IAC housing screws
unless you live in a hot dry climate, the heated TB is nice to have, it keeps the TB from icing up. and at first, the TB rebuild is daunting. but once you get into it its really simple
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Car: 88 GTA Notchback
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: don't know
Re: IAC housing screws
got the IAC housing off and it broke . think it is repairable? When these pictures were taken I had cleaned it all up and put the IAC back in already.
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Car: 88 GTA Notchback
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Transmission: 700R4
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Re: IAC housing screws
Screws are out. Holes have been cleaned out. Anyone got a spare housing lying around?
#13
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Re: IAC housing screws
IAC housings on ebay are like $90+
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Car: 88 GTA Notchback
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Re: IAC housing screws
Update: put the IAC housing on with new bolts. Made sure the broken bolt hole had a washer on top and was really tight. Drove it around, runs like a champ.
I don't intend to leave it like that, but at least I will still have use of the car until I can find a replacement.
I don't intend to leave it like that, but at least I will still have use of the car until I can find a replacement.
#18
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Re: IAC housing screws
Not intending to threadjack, but I've just pulled my throttle body apart for new gaskets/cleaning. The bolts that hold the IAC housing on are severely corroded, and I'd prefer not to reuse them.
Where did you get stainless bolts, and what size are those bolts?
#23
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Re: IAC housing screws
Gotcha...as long as they're in good condition, I'd be far better off. Some of these I have, I'm surprised I was successful in removing from the throttle body without them snapping off, and am concerned a couple of them could break when reinstalling them.
How much would you want for a set to ZIP 37918?
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Re: IAC housing screws
You can get stainless metric socket head cap screws or other head at McMaster Carr. www.mcmaster.com. Here in eastern, Pa if I order by noon, I get them by 5PM but that is at work. They have all sorts of stuff from sheet materials, insulation to screws nuts bolts etc. However, they do charge a bit more because they stock most.
#26
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Re: IAC housing screws
You can get stainless metric socket head cap screws or other head at McMaster Carr. www.mcmaster.com. Here in eastern, Pa if I order by noon, I get them by 5PM but that is at work. They have all sorts of stuff from sheet materials, insulation to screws nuts bolts etc. However, they do charge a bit more because they stock most.
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Re: IAC housing screws
Thanks\Bob
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Re: IAC housing screws
New stainless screws and washers....Intake, Plenum, and Runners acid dipped. Moving on with the rebuild. Thanks for everyone's help on the screw thing!!
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Re: IAC housing screws
Thanks ploegi.
I wore chemical resistant gloves. Finger tips are still a little rough from handling the parts. I'm happy with it.
I wore chemical resistant gloves. Finger tips are still a little rough from handling the parts. I'm happy with it.
#38
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Re: IAC housing screws
I just googled “how to acid dip” to read up on the process and see if it was literally dipping in acid. I was not sure of what type of acid to use, where to purchase or how to keep from burning off my flesh. Well... Google thought I wanted to know how to dip acid, as in LSD. So Bob, can I trouble you for a quick overview of your materials and the process you used?
#39
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Re: IAC housing screws
Actually Ty, I used the wrong terminology when I said "dipped." I used these two products. The White Lightning brushed on first and watched it foam. Hand brushed the tough spots, (wear goggles/glasses and gloves) Rinse, repeat, Rinse, repeat. Then I sprayed on the Eagle I, let sit, rinse repeat until I got them looking good.
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Re: IAC housing screws
Actually Ty, I used the wrong terminology when I said "dipped." I used these two products. The White Lightning brushed on first and watched it foam. Hand brushed the tough spots, (wear goggles/glasses and gloves) Rinse, repeat, Rinse, repeat. Then I sprayed on the Eagle I, let sit, rinse repeat until I got them looking good.
#42
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Re: IAC housing screws
Scooter,
The White Lightning took off the grease and stains. Then the Eagle I was more/less a "finish it off" type thing. My parts weren't that bad to begin with.
The White Lightning took off the grease and stains. Then the Eagle I was more/less a "finish it off" type thing. My parts weren't that bad to begin with.
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