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Wer bremst verliert
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,767
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Lowering the engine COG
One of the "tricks" some local racers use on another class of cars here is to lower the gas tanks and their engines by inserting 1/2 inches of stacked washers or spacers underneath the engine brackets. "Thay" say it moves the center of gravity down...I would be concerned about additional leverage on the bolts but again "they" use gr12 bolts and report no problems.
This is on some Holdens, not seen on any 911s. Anyone do this, any problems and any perceptible benefits? It would seem the shift linkage would be OK b/c of the coupler and I have room underneath with my headers...
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2007 911 Turbo - Not a toy 1985 911 Cab - Wife's toy 1982 911 3.2 Indiash Rot Track Supercharged track toy 1978 911 3.0 Lichtbau toy "Gretchen" 1971 911 Targa S backroad toy |
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05-13-2006, 01:48 PM
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Join Date: Apr 2004
Location: Westchester County NY
Posts: 475
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Is this done assuming that the ride height has been lowered to its Maximum? The ride height lowering would make more sense to me. lowering engine/tranny how would that affect axel angles
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05-13-2006, 02:15 PM
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Wer bremst verliert
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Location: Toronto, Ontario
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Yes, ride height already at lowest settings with front spoiler ~1.5 inches off the deck.
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2007 911 Turbo - Not a toy 1985 911 Cab - Wife's toy 1982 911 3.2 Indiash Rot Track Supercharged track toy 1978 911 3.0 Lichtbau toy "Gretchen" 1971 911 Targa S backroad toy |
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05-13-2006, 06:56 PM
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Join Date: May 2004
Location: Lake Cle Elum - Eastern WA.
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I'd have to wonder about changing the angle of the shifting coupler and if that would affect the trans?
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Bob S. 73.5 911T 1969 911T Coo' pay (one owner) 1960 Mercedes 190SL 1962 XKE Roadster (sold) - 13 motorcycles |
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05-13-2006, 07:31 PM
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She/Her
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It would make more sense to me to lighten the rear and/or add weight to the front to balance the car better. 911's are rear end heavy and I think a balanced front and rear would benefit a little more than lowering the engine.
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Gwyneth *she/her 1995 993 Guards Red 1984 911 Targa with a G50 (RIP) |
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05-13-2006, 07:50 PM
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Join Date: Apr 2002
Location: Santa Clara, CA
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This is a secret. Stop posting publicly
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Chuck Moreland - elephantracing.com - vonnen.com |
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05-13-2006, 09:10 PM
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Registered
Join Date: Apr 2004
Location: Central CA
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Like this.
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'69 911 Targa w/ 3.2 |
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05-14-2006, 05:13 AM
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Wer bremst verliert
Join Date: Jan 2005
Location: Toronto, Ontario
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Nice. Are you able to take up the corresponding length in the shifter purely through screwing down (shortening) the shifter linkage or did you have to replace the shift rod or otherwise?
Sorry Chuck! ;-)
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2007 911 Turbo - Not a toy 1985 911 Cab - Wife's toy 1982 911 3.2 Indiash Rot Track Supercharged track toy 1978 911 3.0 Lichtbau toy "Gretchen" 1971 911 Targa S backroad toy |
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05-14-2006, 12:41 PM
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Join Date: Apr 2004
Location: Central CA
Posts: 568
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John,
My car was already modified when I got it. The cross bar had extensions welded on to move the engine forward. I put the spacer in to eliminate the twisting moment on the cross bar. The car is a B@ST@RD so it is hard to tell what all was required to make this move. The chassis is '69, the engine and tranny are '84, the suspension is different. I had to do alot of mods to extend the rear engine tin back to the gasket.
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'69 911 Targa w/ 3.2 |
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05-15-2006, 12:24 PM
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1995 Porsche 993
