Bodywork, Paint, Interior, Trim, & Wiring

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Dave R
Northern Virginia
(111 posts)

04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

MGB body reinforcements for IRS?
Posted by: RDMG
Date: May 30, 2016 05:04PM

Hi everyone,

I've read a lot about useful reinforcements of the MGB unibody frame when retaining rear leaf springs on a V8 conversion, but I haven't seen much discussion about reinforcements needed when using an IRS setup.

I'm planning to use a bolt-on Hoyle IRS assembly, which uses many of the factory rear suspension mounting points. However, I expect the stresses on the frame will be applied to different points, given the changed geometry.

Anyone out there have experienced to share?


Carl Floyd
Kingsport, TN
(3601 posts)

10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: MGB body reinforcements for IRS?
Posted by: MGBV8
Date: May 31, 2016 11:53AM

Not sure any are needed. Have you read this?


Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5725 posts)

10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: MGB body reinforcements for IRS?
Posted by: BlownMGB-V8
Date: June 01, 2016 10:32AM

On the Jag conversions I used a member which tied the two front spring hangers together and in the center butted up against the lip on the panel that forms the bottom of the driveshaft loop using a 1/4" thick nylon wear strip to handle thrust loads.


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