Diff bolt sizes

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simonjrwinter
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Diff bolt sizes

Post by simonjrwinter » Sun Dec 01, 2019 5:48 pm

8E68CFAA-4C37-4F57-BC1F-9DB5B2F6A1EA.png
Does anyone know the thread size of the diff bolts (no 11 in pic)?
I want to buy a tap to run down the threads.
Thanks
Simon
TR6 (V8) Hawk 289 FIA (V8) Doing my bit for global warming.

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kdavies3
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Re: Diff bolt sizes

Post by kdavies3 » Tue Dec 03, 2019 10:41 am

I reckon Ben at Simply Performance will tell you off the top of his head.
He's doing the rear end for the Hawk right now.
Kev Davies
DAX Mk4, 383 Chevy Stroker, Tremec. SOLD
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simonjrwinter
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Re: Diff bolt sizes

Post by simonjrwinter » Tue Dec 03, 2019 11:55 am

They are 1/2 UNC if anyone needs to know.

Simon
TR6 (V8) Hawk 289 FIA (V8) Doing my bit for global warming.

peterc
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Re: Diff bolt sizes

Post by peterc » Thu Dec 05, 2019 9:27 am

Kev, out of interest would he be looking at making the Jag rear have a diet and lose some excess weight. Ali diff housing or changing any other parts.
e.g Hawks support Steel is rather strong and heavy.
Having a Rover engine in my Hawk means it’s the rear that’s the heavier half.
Peter C

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kdavies3
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Re: Diff bolt sizes

Post by kdavies3 » Thu Dec 05, 2019 11:05 am

Hi Peter,
do you mean an ally diff case or the frame (diff support) the diff mounts to?
I will have a standard Jaguar iron cast diff housing.
I haven't got the IRS mounting kit (diff support) yet, need one though.
I've gone with outboard rear discs BTW.
Kev Davies
DAX Mk4, 383 Chevy Stroker, Tremec. SOLD
Contemporary CCX 3-4028, 445ci Big Block FORD FE,TKO 600. SOLD
Dax De Dion LS2 and T56. SOLD
1965 Ford Mustang 289 Convertible FOR SALE
In build Hawk 289 Sebring. :D

peterc
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Re: Diff bolt sizes

Post by peterc » Fri Dec 06, 2019 6:24 pm

Hi Kev,
Actually I was referring to both diff casing and the support steels.
Not sure whether a standard Ali Jag diff casing exists otherwise it the need to go down the Cosworth route.
I appreciate that any of the steel support angle would need to be a fair bit thinker section to take the strain but I’m sure there must be some mileage in looking at a diet for the overall assembly.
Nice to hear that you are going the more authentic route with outboard discs. I don’t know how that affects the overall weight or changes the road holding with the change in un sprung weight.
I know several members have now converted.
Peter C

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