Rear brake conversion?

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Ferngar
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Rear brake conversion?

Post by Ferngar » Tue Feb 04, 2020 1:57 pm

Hi All
I have the Jaguar rear axle on my Hawk fitted with inboard rear brakes.
Has anyone changed from this arrangement to outboard brakes as fitted on the later Jags?

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nikbj68
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Re: Rear brake conversion?

Post by nikbj68 » Tue Feb 04, 2020 2:15 pm

Roger King did.
Not for the faint of heart...
Hawk 289 FiA...AT LAST!!!

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kdavies3
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Re: Rear brake conversion?

Post by kdavies3 » Tue Feb 04, 2020 5:58 pm

It's been done a few times.
It's half XJ6 and half XJ40.
Unless you can find a very late XJS axle that had outboards as standard. (Hens Teeth)
Talk to Ben at "Simply Performance"
He'll be able to supply every thing you need at a price of course.
I'm building my Hawk with outboard discs from the off.
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StewbieC
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Re: Rear brake conversion?

Post by StewbieC » Tue Feb 04, 2020 6:14 pm

I've got external brakes on my Hawk with Jag back end.
As Kevin says XJ6 diff and XJ40 outboard carriers.
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Frank289
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Re: Rear brake conversion?

Post by Frank289 » Tue Feb 04, 2020 6:43 pm

Hello, im very curious if its better to have a jaguar axle as MGB?
And wenn i would change to Jag outside brakes i need convertion adaptorr from Jag 5 bolt to threat center lock for my austin healy `5'' wire wheels. hat woud become the total wide ? doEs it fit on a BRA?

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StewbieC
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Re: Rear brake conversion?

Post by StewbieC » Tue Feb 04, 2020 8:56 pm

The Jag set up I have uses shortened drive shafts and lower links and is similar width to an MGB Wire axle. I have hub adaptors from 5 bolt jag to 42mm 8tpi splined drive for wire wheels.
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Frank289
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Re: Rear brake conversion?

Post by Frank289 » Tue Feb 04, 2020 9:15 pm

That means when i would order a upgrade from amstrongs to normal suspension from for example Gerry, there is no difference?

StuBaker
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Re: Rear brake conversion?

Post by StuBaker » Tue Feb 04, 2020 10:25 pm

Has anyone fitted the Hawk/Hoyle IRS?
That has outboard brakes.
I'd be interested as I'd like to do that at some stage.

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Re: Rear brake conversion?

Post by FIAJack » Wed Feb 05, 2020 9:38 am

Hawk/Hoyle IRS!! Now that is not for the faint of heart. It can't be fitted to a standard hawk chassis. It needs extensive rework and welding of the chassis to accomodate. Gerry explained it all to me once when I was considering it. Not really a runner unless you're prepared to dismantle the car and rework the chassis.

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Jack.

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StewbieC
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Re: Rear brake conversion?

Post by StewbieC » Wed Feb 05, 2020 1:16 pm

I looked into the Hoyles back end and decided on the Jag set up instead.
The Tubular wishbone front end needs some cutting and welding on the Hawk. I'd assume it would be similar on the BRA as the upper spring cups need clearance for the coil overs.
See here https://www.the289register.com/stuart/U ... erhaul.pdf
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