Lowering Bolts - Specs?
Thread Starter
Melting Slicks
Joined: Dec 2002
Posts: 2,480
Likes: 62
From: Middletown DE
Lowering Bolts - Specs?
I keep hearing about using the longer bolts for Z51 / zo6 vette's.
What are the specs for those? I know they should be 6", grade 5-8. fine thread, but what is the size???
?
Thanks
John
What are the specs for those? I know they should be 6", grade 5-8. fine thread, but what is the size???
?
Thanks
John
Team Owner
Joined: Mar 2001
Posts: 25,013
Likes: 80
From: Manitoba/San Jose del Cabo
Cruise-In III Veteran
St. Jude Donor '11
Re: Lowering Bolts - Specs? (99firetruck)
If you can find them they should be 9/16". I would say 80+% of fForum members who use longer bolts are using 1/2" bolts with no ill effects. :cheers:
Race Director
Joined: Sep 1999
Posts: 12,438
Likes: 919
From: CONCORD NC
Re: Lowering Bolts - Specs? (99firetruck)
You should use metric bolts. The 1/2" will damage the rubber dampers in time-too much play.
Of you buy US, don't use grade 8. Grade 8 is designed for a pure clamping load, no cyclical. Use Grade 5, imho.
Dave
Of you buy US, don't use grade 8. Grade 8 is designed for a pure clamping load, no cyclical. Use Grade 5, imho.
Dave
Team Owner
Joined: Mar 2001
Posts: 25,013
Likes: 80
From: Manitoba/San Jose del Cabo
Cruise-In III Veteran
St. Jude Donor '11
Re: Lowering Bolts - Specs? (99firetruck)
You should use metric bolts. The 1/2" will damage the rubber dampers in time-too much play.
Dave
Dave
Thread Starter
Melting Slicks
Joined: Dec 2002
Posts: 2,480
Likes: 62
From: Middletown DE
Re: Lowering Bolts - Specs? (99firetruck)
ok, so i go to my local hardware shop - they only ones that would carry such a grade and size...
They only had 1/2" in 6" at grade 5. The only issue is: it is not fine thread.. Can i just use lock tite or something? what is the "importance" with the fine thread?
They did not have anything else, i looked - metric - everything...
They only had 1/2" in 6" at grade 5. The only issue is: it is not fine thread.. Can i just use lock tite or something? what is the "importance" with the fine thread?
They did not have anything else, i looked - metric - everything...
Melting Slicks
Joined: Nov 2000
Posts: 2,332
Likes: 32
From: USA
Re: Lowering Bolts - Specs? (99firetruck)
I know they should be 6"
You have 6" bolts in there now (stock). However the stock ones are only threaded to 5 1/2". Therefore you are only gaining 1/2". This may be what you are after. Seems like most folks are using 6 1/2" bolts or even 7".
I do not know if there is anything to worry about with the course thread. You can buy nylon nuts, sometimes called nylocks, that will retain the nuts on the bolts very well.
Dave
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Team Owner
Joined: Mar 2001
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From: Manitoba/San Jose del Cabo
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St. Jude Donor '11
Re: Lowering Bolts - Specs? (99firetruck)
I know they should be 6"
