Bellhousing engine mount lugs

Daryl Adams · 02-08-07, 02:06 PM

Mention was recently made in other threads of the desireability/advisability of engine mounting lugs on the bellhousing. Looking at the original GT40 parts drawings I do indeed see a mounting lug on the bellhousing. However, looking at the chassis drawings I don't see any place for that lug to attach. The only fastening locations I see are in the vertical plane of the mounting lugs on top of the ZF. I believe that is where the rear subframe bolts on as well. The bellhousing lugs must certainly be several inches forward of that plane, and I can't see what they would bolt to. Can someone clarify this? I have always thought that the GT40 used only the standard engine block mount points and the suspension ears on the ZF. Just trying to understand.

SpyderMike · 02-08-07, 02:17 PM

Daryl,

The issue was brought up by Frank at Wealdon Engineering. He PM'd me about the missing posts. I asked him for more details and I have yet to hear back from him.

Frank??

Mike

Frank Catt · 02-08-07, 02:20 PM

OK Guys, Just having dinner ! will reply later, Frank

Daryl Adams · 02-08-07, 02:37 PM

Thanks, Frank. Dennis Olthoff is considering an alternate bellhousing for my MKI and I have time to incorporate additional anchorage if it's the right thing to do.

Frank Catt · 02-08-07, 05:05 PM

Daryl / Mike. The original GT40 Monocoque had mountings on the bottom of the bellhousing as well as the lugs on the gearbox top plate. The chassis had tubes welded into and through the lower cross beam, and a threaded bar 0.5 inch dia.( nuts both ends ) passed through this tube and the bellhousing, and spacers were made to take up any gap between them. Original pattern GT40 bellhousings are available in the UK, AND ARE BEING USED AS REPLACEMENTS ON ORIGINAL CARS, so they are very accurate. These are available for approximately $1200 plus shipping. I am not sure whether your SPF chassis has the requisit tubes welded into the crossmember, you must check, but you will need to make additional supports for the gearbox, and if the method above is not available then we have fitted an alternative that will. I can E mail pictures of the bellhousings to you, but the file size is too big to post here and I still cannot reduce picture file sizes. Frank

Lynn · 02-08-07, 05:38 PM

Frank's Bellhousing Pics:

**dolthoff** · 02-08-07, 06:33 PM

Guys
That particlar bellhousing is also available from Safir GT-40 spares, Ltd.
It uses a 148 tooth flywheel and specific clutch. Apparently McLeod may be tooling up to do these with a mod to use a normal 10.5 clutch.

The other item is starter location. A Special cut out oil pan is needed.

I Should have a prototipe Blowproof housing within the next week using standard 157 tooth flywheel and 10.5 single or double disc clutch.
Being steel it should be easy to fabricate the two crossmember mounts.

We will also have a FE to ZF version soon.

Will post pictures as soon as we get it.
Cheers
Dennis.