Bolts instead of Stud's? 1 Attachment(s)
Is it OK to use bolts instead of Studs on 59AB to mount Main bearing caps. I think the 8BA uses Bolts, and somehow the studs have been lost over the years, And here in Metricland its hard to get the nonmetric studs.
And i cant find them at Mac's |
Re: Bolts instead of Stud's? Lars, I just salvaged the studs out of a 21 stud motor, if they are the same as what you need, they're yours for the cost of postage. Have the nuts too.
I can measure them if that would help. Mart. |
Re: Bolts instead of Stud's? I'm using bolts on main caps on a 59AB I'm in the middle of now, cannot see a reason not to... Karl
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Re: Bolts instead of Stud's? Canadian C69A engines [pre 8BA series] used bolts on their mains. Brian
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Re: Bolts instead of Stud's? I once owned a nos 59 ab block that had bolts instead of studs.
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Re: Bolts instead of Stud's? On that same note, I was wondering about using Studs instead of bolts for bolting down heads on an 8BA block? I'm using a set of Offenhauser alum heads, so I'm not even sure if the stock bolts/studs will work.
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Re: Bolts instead of Stud's? I use grade 8 head bolts on about all my 59 engine. I bye them at a fastenal place, there kind of gold color. The only differance is they have 5/8 heads. I use grade 8 flat washer. I've never used bolts on main caps but cain't see why not. Walt PS, you can bye chrome acorn nut covers for the 5/8 head bolts.
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Re: Bolts instead of Stud's? Walt,
On choosing the bolts, how much thread depth do you allow for in the block? Thanks, Ralph |
Re: Bolts instead of Stud's? The rule of thumb is a Diameter ans a half the main bolts are 1/2 -13 so that works out to about 9 threads min. Check for bottoming use a flat washer not a lock washer torque to 95/ ft/lbs. I don't use studs for heads either, use a grad 5 bolt with a min fof 7 threads and torque to 45 ft/lbs. I'm not saying this is the only way to do this, just the way I did it for years. Also re torque head bolts afte at least 3 heat cycles
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Re: Bolts instead of Stud's? Thanks Ron,
Do I need to put any sealer on the threads? Especially the ones that go into the water jacket? |
Re: Bolts instead of Stud's? Use permatex aviation sealer on the bolts works very well and doesn't harden also works as a thread lube when torquing.
Ronnie |
Re: Bolts instead of Stud's? Yup!
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Re: Bolts instead of Stud's? I bought ARP (pricey) studs and nuts for my aluminum heads at the recommendation of Red Hamilton (Reds Headers). Guess I overshot it.
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Re: Bolts instead of Stud's? I put ARP bolts in the mains of my 8ba....dont know if there the same for 59's
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Re: Bolts instead of Stud's? YES us bolts, H & H flathead, in southern Calif, made the main center strap for my rebuild with bolts, A good sorce for bolts, and all flathead stuff. AT>> FLATHEADS-FOREVER.COM ... OR 818-248-2347.... OLD....BILL
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Re: Bolts instead of Stud's? 1 Attachment(s)
Is this it? Just so happened I had a couple cans of this someone gave me.
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Re: Bolts instead of Stud's? Yup that's the good stuff it works
Ronnie |
Re: Bolts instead of Stud's? If you go to an industrial supply shop you can buy grad 8 bolts for a fraction of what AARP sells them for, I bought 16 3/8 NF and 6 1/2 nf nuts and 6 hardened steel washers for 6 dollars.
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