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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Dec 26, '09 From Albuquerque, NM Currently Offline Reputation: 19 (100%) ![]() |
Yesterday, I crawled under the Celi to change the oil and replace the drive belts, then I ran into some issues with the PS belt. I loosened the bolt which fastens to the pivot slot on the bracket, and the bracket just fell off. Looks like the dudes who installed my engine after it was rebuilt never bolted it back to my engine. Instead, they cranked on the bolt that holds the PS pump to the pivot bracket on the crankcase, which kept the pump from moving....
So I was going to make a trip to Home Depot to get two bolts for the bracket so I can actually tighten the PS assembly on the slotted bracket how it should've been, but then I thought about material properties and wondered if the bolts I were to get from Home Depot were capable of withstanding the heat that the engine produces. I'm not worried about the stresses on the bolts since they'll just be holding a bracket to the engine - it's not like a motor mount bolt. The heat is likely a nonissue, but I thought I'd run it by here first. What do you guys think? -------------------- taking too long to mod since '09
June '12 COTM '95 AT200 |
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![]() Enthusiast ![]() ![]() Joined Nov 12, '08 From ohio Currently Offline Reputation: 17 (91%) ![]() |
I would recommend using a grade 8 bolt with locking washers just my opinion.
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![]() Moderator ![]() ![]() ![]() ![]() ![]() Joined Jun 29, '08 From Denver Currently Offline Reputation: 59 (100%) ![]() |
I wouldnt go to Home Depot. In my experience, they don't carry fine thread bolts that would fit our cars. That being said, any bolt you get at Home Depot can tolerate the heat.
-------------------- "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others labored hard for." -Socrates. Even Socrates told us to use the search button!
![]() 2006 Aston Martin V8 Vantage. 1998 Celica GT- BEAMS Swapped. 2022 4Runner TRD Off Road Prenium. 2021 GMC Sierra AT4. |
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) ![]() |
Seems Ace usually has the best selections when it comes to bolts, nuts, and fittings.
-------------------- 2001 Miata LS 5-speed
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Dec 26, '09 From Albuquerque, NM Currently Offline Reputation: 19 (100%) ![]() |
Thanks, guys. I'll check Ace first since I've got one within walking distance. I have thread pitch gauges at my work, so I'll measure the bolt that goes directly into the PS assembly (it's the same as the bolts that fasten the bracket) before I head to Ace.
-------------------- taking too long to mod since '09
June '12 COTM '95 AT200 |
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Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Dec 8, '03 From Lancaster CA Currently Offline Reputation: 6 (100%) ![]() |
you are reading into this way too much, the heat from an engine wont hurt anything. i have found that neither lowes or home depot have the metric bolts that we really need, its better to go to an actual bolt store
-------------------- 2001 Celica GT-S Turbo
1997 Supra TT 6speed 1997 Celica 3MZ/1MZ swap 1990 Celica All-Trac |
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Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) ![]() |
Metric 8.8 is the same strength as standard grade 5, so you want metric grade 10.something or better bolts.
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Dec 26, '09 From Albuquerque, NM Currently Offline Reputation: 19 (100%) ![]() |
Got some grade 10 SS bolts from my local ACE and I'm driving around fine now. I think I gotta tighten the PS belt just a tad bit more (getting a bit more than 0.25" of deflection), but I'll do that later in the week. I don't drive the Celica much these days.
Thanks for your input, guys. -------------------- taking too long to mod since '09
June '12 COTM '95 AT200 |
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Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) ![]() |
If it's a new belt it's wise to re-adjust after some miles anyway, they stretch some when new.
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Dec 26, '09 From Albuquerque, NM Currently Offline Reputation: 19 (100%) ![]() |
If it's a new belt it's wise to re-adjust after some miles anyway, they stretch some when new. Thanks, I'll make sure the alt belt is up to specs when I'm in there again. -------------------- taking too long to mod since '09
June '12 COTM '95 AT200 |
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Enthusiast ![]() Joined Dec 27, '11 From minnesota Currently Offline Reputation: 0 (0%) ![]() |
I would use the cheapest bolt you can buy, the bolt is not going to be stressed. Not only that but I bet the cheap bolts are more ductile, there isn't much force I think people tend to read to much into some of these things. The only time you want a super strong bolt is when your wanting to bolt something down with a lot of pressure.
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