What grade bolt for turbo manifold?

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Jun 22, 2010 | 01:51 PM

JD_Z28

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From: Arizona

What grade bolt for turbo manifold?

What grade bolt, washers, nut for turbo exhaust housing to turbo manifold? I was thinking about using some stianless steel bolts but I don't they they will hold up. Should I go with a grade 8 bolt or is there something better I can use to prevent rusting?

Jun 22, 2010 | 01:57 PM

XtremeDime

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I just use whatever manifold bolts NAPA or the dealer sells. Not sure what grade they are.

Jun 22, 2010 | 02:12 PM

vicarofhell

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grade 8 will work fine, I have not seen many bolts not rust once they get heated a few times. The last ones I got from Advance with nuts and locking washers. Check the flanges ensure they are true if not hit them with a belt sander. should take no more than a little spray copper to seal them.

Jun 22, 2010 | 04:30 PM

JD_Z28

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From: Arizona

Quote:

Originally Posted by vicarofhell

I tried using grade 5 stainless before but the bolts didn't hold up when I took them out. The nice thing about the stainless bolts were that they kept their finish and didn't rust.

Jun 22, 2010 | 04:36 PM

custm2500

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Zip ties!

Jun 22, 2010 | 08:16 PM

JD_Z28

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Quote:

Originally Posted by custm2500

Zip ties!

Jun 22, 2010 | 09:17 PM

MUSTANGBRKR02

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I use grade 8 stainless. They look alot better and i never have a problem removing and reinstalling them.

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Jun 22, 2010 | 10:04 PM

black98ws6ta

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Stainless is fine, just use alittle anti sieze on them. Grade 8 is overkill.

Jun 22, 2010 | 11:32 PM

#10

JD_Z28

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From: Arizona

Quote:

Originally Posted by MUSTANGBRKR02

I use grade 8 stainless. They look alot better and i never have a problem removing and reinstalling them.

Where can I find grade 8 stainless? I've tried ACE's hardware and they don't carry it.

Jun 22, 2010 | 11:33 PM

#11

JD_Z28

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From: Arizona

Quote:

Originally Posted by black98ws6ta

Stainless is fine, just use alittle anti sieze on them. Grade 8 is overkill.

I would like to have the extra security if possible. I just don't know where to find grade 8 stainless.

Jun 23, 2010 | 11:43 AM

#12

ModularTurbo

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Are you referring to a Bumax 88 stainless bolt.

I don’t recall seeing a grade 8 stainless bolt.

I have only seen grade 2,5 and 8 numbering
used on steel bolts.

Last edited by ModularTurbo; Jun 23, 2010 at 11:49 AM.

Jun 23, 2010 | 06:31 PM

#13

MUSTANGBRKR02

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From: Maine

Quote:

Originally Posted by ModularTurbo

Are you referring to a Bumax 88 stainless bolt.

I don’t recall seeing a grade 8 stainless bolt.

I have only seen grade 2,5 and 8 numbering
used on steel bolts.

I guess i should have clarified i use Aircraft grade stainless bolts. With a tensile strength equal to a grade 8 or stronger (but i get them at a good discount).

Jun 24, 2010 | 11:08 AM

#14

ModularTurbo

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LOL ya cuz it was probly meant for a harrier.

Jun 24, 2010 | 12:17 PM

#15

black98ws6ta

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Quote:

Originally Posted by JD_Z28

I would like to have the extra security if possible. I just don't know where to find grade 8 stainless.

I can understand wanting some overkill but I have used standard stainless bolts from ACE hardware on everything automotive we do and never had a problem. The fastner doesnt really need to be strong.

Jun 24, 2010 | 06:14 PM

#16

JD_Z28

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From: Arizona

Quote:

Originally Posted by black98ws6ta

I can understand wanting some overkill but I have used standard stainless bolts from ACE hardware on everything automotive we do and never had a problem. The fastner doesnt really need to be strong.

I snapped 2 stainless steel bolts trying to untread them to take my turbo out.

Jun 24, 2010 | 06:23 PM

#17

black98ws6ta

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Quote:

Originally Posted by JD_Z28

I snapped 2 stainless steel bolts trying to untread them to take my turbo out.

You dont need more strength, you need anti sieze.

Jun 24, 2010 | 06:28 PM

#18

Old Geezer

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Stainless into mild steel without antisieze is not good. Use the hi temp antisieze.. IE:
http://www.neverseezproducts.com/hightemp.htm
Spring type lock washers are useless after the first hit w/ heat..