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IMR-Merlin's Avatar
 
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Moving the engine forward

Seeing as I am installing a G50 in my 930 and going with full coil over suspension, I have no need for the torsion tube. I am thinking about moving the engine and trans forward an inch or more. Has anyone ever done this to help with weight distribution? Aside from the axle geometry and engine tins, what else could be the issue?

I am going to build (or buy) an after market shift tower so the shift shaft won't be an issue.
Old 11-05-2011, 01:20 PM
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Jbp Jbp is offline
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If you gona kut in the floor of your body
so why not?G50 shudnt fitt anyway.If it a pre-89 930?
Angel of driweshafts can bee a droblem?


Jocke.
Old 11-05-2011, 03:22 PM
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Quote:
Originally Posted by Jbp View Post
If you gona kut in the floor of your body
so why not?G50 shudnt fitt anyway.If it a pre-89 930?
Angel of driweshafts can bee a droblem?


Jocke.
True, I am cutting the floor and the torsion tube and going to go with a full cage so that I can tie in all the suspension points. Just thinking I am going to have to modify/build something for the engine tins.
Old 11-05-2011, 03:35 PM
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Merlin,
As long as you reinforce the frame - the torsion tube is structural. So just removing it is not too good of an idea.

Good luck
Old 11-05-2011, 06:27 PM
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I won't be pulling the tube completely out. I will be taking about 10 - 12" out of the center and then I'll tie it into the cage. This way it will hold it's structural ability for the rear control arms. I am actually going to pick up the tube from a few points so it will be stronger.

Not digging into that for a month or so, got the car pretty much gutted now and I need to fab up a rotisserie. Then I am going to do the sun roof and rain gutter delete. Thinking I'll be in the engine bay by mid December.
Old 11-05-2011, 06:56 PM
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Based on the amount of work involved , I don't see a lot of benefit moving the engine & trans forward 1".
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Old 11-05-2011, 07:00 PM
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Based on the amount of work involved , I don't see a lot of benefit moving the engine & trans forward 1".
The work is already being done to install the G50 and coil over suspension. Moving the engine would be fairly easy.
Old 11-05-2011, 07:29 PM
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Sounds like a great project. Please keep us posted with pictures.
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Old 11-06-2011, 02:03 PM
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Yes, I have done that on my 76 911S when I installed my 3.3 turbo and a G50,I also have coil overs with 935 spring plates,I just installed a steel plate in between the trans mount and the G50 and moved it forward until the air filter housing hit the fire wall, the Engine mount brace is a little bowled, A standard 930 weight balance is 38/62 . I just had my car corner balanced it came to 60/40
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Last edited by heliolps2; 11-06-2011 at 05:43 PM..
Old 11-06-2011, 05:41 PM
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Quote:
Originally Posted by heliolps2 View Post
Yes, I have done that on my 76 911S when I installed my 3.3 turbo and a G50,I also have coil overs with 935 spring plates,I just installed a steel plate in between the trans mount and the G50 and moved it forward until the air filter housing hit the fire wall, the Engine mount brace is a little bowled, A standard 930 weight balance is 38/62 . I just had my car corner balanced it came to 60/40
Thanks for the feedback! Glad to hear that this can be done and it's good to see the positive weight gains balance gain. Just curious on how do your tins line up?
Old 11-07-2011, 06:27 AM
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I once swapped out the torsion tubes on a 912 to a 911 to accommodate a 915
trans . Not so sure I want to do that again, but I would like to see pics of how you
made your setup. Certainly, alignment is critical,especially after the welds cool.
Old 11-07-2011, 06:36 AM
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I will document the work in my thread. new member 930 project I think that I'll be fine with sectioning the torsion tube and bracing it. I am concerned with the control arms flexing inward under load, the engine is dyno'd at 450.

I did look into swapping the complete torsion tube out the the G50 donor, but after some consideration I decided that coil overs would give me a better end product.
Old 11-07-2011, 07:51 AM
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