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Author Topic:   Engine set-back.......questions, thoughts, and concernss
nice_guy_wi
Dirt Maniac

Total posts: 120
posted January 23, 2005 08:26 PM  
Ok we have a new promoter, and therefor new rules. We are in the process of stripping/building an 85 Monte Carlo. We have a #3200 minimum. We want to set the engine back, BUT have a NO notching of the cross member rule for the fuel pump now (no electric fuel pumps). #1 plug also has to be ahead of ball joint. We also plan on running center dumps. Anyone have the secret way around this? How much would be lost moving the body back a few inches (how far is do-able without a lot of hassle?) and leaving the engine in stock location but lowered? While we are at it .... any other tips for getting 52-53% rear without needing a ton of weight and exceeding the #3200 min?

dirt_freek
Dirt Full Roller

Total posts: 29
posted January 23, 2005 10:13 PM  
you will haveto leave engine in the stock location for clearence ofthe fuel pump but then you will have to knotch the back side of the cross member for the exhaust or the manafolds will be usless be creative to make them fit but what ever you do make it look factory

hobby10k
Dirt Freak

Total posts: 226
posted January 24, 2005 01:13 AM  
I dont think there is a way to use ramhorns and not cutting the crossmember, I know we had to do it for sure.
as far as trying to move the engine, I would just leave it there I dont think you are going to be able to move it (hence the rules applied at your track) without modifying stuff

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LIVE RACING, WHAT ELSE IT THERE?

LAY74
Dirt Full Roller

Total posts: 74
posted January 24, 2005 06:37 AM  
PUT MOTOR IN WITH MOUNTS AND FUEL PUMP ATTACHED. THEN MOVE IT BACK AS FAR AS YOU CAN UNTIL FUEL PUMP ALMOST TOUCHES. A 1" OR 1/2" WILL MAKE A DIFFERENCE WHEN MOVING THAT BACK. FOR MORE REAR TRY TO MOVE THE SEAT AS FAR BACK AS POSSIBLE. THIS WILL REQUIRE USING AFTER MARKET STEERING AND MOVING THE PEDALS, BUT YOU WILL GAIN BY THIS. THERE IS ALSO A GOOD TRICK WHEN MOUNTING THE CAGE TO GET 4% MORE CROSS. IF YOU HAVENT MOUNTED CAGE YET EMAIL ME AND I WILL LET YOU KNOW..

LENGTH_80_8@yahoo.com

marshalr
Dirt Maniac

Total posts: 148
posted January 24, 2005 12:30 PM  
Move cross member back, move body back.

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Some People Race For A Living; I Live To Race

sc1 racing
Dirt Freak

Total posts: 419
posted January 26, 2005 03:26 PM  
accidently heat the crossmember, and cool it down with a sledge hammer. if heated enough the cross member will sink in flush and look factory. then drop motor in with fuel pump and move back far as possible

leddy #33
Dirt Full Roller

Total posts: 32
posted January 26, 2005 03:59 PM  
quote:
Originally posted by sc1 racing:
accidently heat the crossmember, and cool it down with a sledge hammer. if heated enough the cross member will sink in flush and look factory. then drop motor in with fuel pump and move back far as possible

NICE! ME LIKEY!


petordragon
Dirt Maniac

Total posts: 167
posted January 26, 2005 08:54 PM  
cool it down with a sledge hammer now that's dirt track lol

nice_guy_wi
Dirt Maniac

Total posts: 120
posted January 28, 2005 09:32 PM  
sc1....sounds like you may have had to beat this rule yourself in the past. We will give you the the "grey area" engineering tip of the week for that one. Leaves us with just one question yet. How far back does the engine have to go for the center dumps to clear the backside(approx)?

sc1 racing
Dirt Freak

Total posts: 419
posted January 29, 2005 02:13 AM  
i have no idea about the manifolds we can notch our frames and run headers. but on a camaro stub there is a little indention for the fuel pump. id say just heat it up and work it in. you should be able to get a good 2 inch set back. but if the manifolds are holding you back id switch manifolds. id much rather have the engine back rather than the ram type manifolds.if im not mistaking the newer manifolds are more open..

racin78p
Dirt Freak

Total posts: 333
posted January 29, 2005 03:46 PM  
Just a thought. When putting our 85' Regal together and trying to get as much engine set back as possible WITHOUT notching the cross member, we found that by shifting the engine to the left about 3/4" (which is a good thing) gained some with fuel pump clearance. We had to cut up an old set of engine mounts to use as a shim to level the motor (which also gave us more clearance with the pump. Ended up with 1 1/2" engine set back, better header clearance on the right side with the frame and scaling numbers were better too. I won't admit to setting back the body 2 1/2" though. Never happened. But in reality it wasn't necessary to get distributor/firewall clearance like we were worried about. Just a thought.

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racin78p
if it ain't fun, then don't run

Elmo
Dirt Forum Racer

Total posts: 79
posted January 29, 2005 05:26 PM  
I like SC1's Idea, that's what I was going to recommend. You will have to do some gutting to drop weight. Then add ballast to rear of car. There's alot of metal in the G-Body front body mount's-outside's of firewall, the windshield pillar, upper inside quarter-roof & rocker panels. If you take your time, you can cover it up and it's not noticable. You can also bend the entire front firewall or move it and body back alltogether.

monteregal7
Dirt Maniac

Total posts: 126
posted January 31, 2005 05:03 PM  
We widened the frame 5". Used a center link from a 76 Impala for the steering. That engine will move back now with no fuel pump cut.

    

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