924Board.org

PORSCHEV

I thought I would post a few of the pics of how I built my motor mounts as well how close the brake booster is when you do a conversion. It was a huge job moving the booster upward and outboard closer to the strut tower. You will notice the notch out of the strut tower to make room just for the brake line. All the pedals had to be rehung/manufactured. You will see the master clutch cylinder sitting a bit cock-eyed just due to clearence problems.

The 1/2 aluminum plate links the motor mounts to each other...and the mounts attach underneath the stock crossmember. This way the weight of the car helps hold and support the mounts and engine. The actual rubber mounting are stock chev mounts that mated to the custom supports I built.

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1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

Lizard · Posted: Thu Aug 05, 2004 12:32 pm Post subject:

I have a couple of questions,

from the looks of it you loweres the cross member is this correct? if yes how exactly did you go about doing this?

also are you using the factory 924 swaybar mounts? and is there enough clearance under heavy load so it doesnt hit your harmonic balancer?

I am going to be attempting a V8 swap with a 928S 5.0L DOHC V8 into a 931 chassis, however to clear the brake booster I am going to be moving the engine forward a few inches and relocating the rad into the back of the car, but I am going to be needing to rework the swaybar and the crossmember and would like to get some input
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3 928s,

titchati · Joined: 02 Mar 2003 Posts: 23 Location: belgium

Hello !

OT : 928S had a 4.7L, not 5.0L

Unless you've got a 928S3 or S4.

See ya!

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87' 924S for every day,
83' 924 for the track !

PORSCHEV · Posted: Thu Aug 05, 2004 10:30 pm Post subject:

Lizard..the motor mounts only lower the cross memeber by the thickness of the steel they are made out of 3/16" Next time I get the car up on stands with the wheels off I'll take some better pics. I took those just by sticking the camera under the car

The sway bar clears by about half an inch and under heavy load will move behind the harmonic balancer..correct? If I have any trouble there it can easily be fixed by putting in a spacer under the nylon/rubber mounting point.
_________________
1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

Lizard · Posted: Fri Aug 06, 2004 4:51 am Post subject:

PORSCHEV · Posted: Fri Aug 06, 2004 8:26 pm Post subject:

I had come up with the spacer idea from when I had my orginal "dummy" block in the car. It was a 350 sbc...but had a much larger harmonic balancer. The early 327's have a smaller journaled crank shaft and a harmonic balancer that presses onto the end of the crank rather than bolting..which by the way really sucks when your trying to put the engine on it's timing marks!
_________________
1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

ponchojuan · Joined: 20 Jul 2004 Posts: 51 Location: Boston, MA

Wonder if this would work, or whether they have something that would allow the offset. This is a common problem with hotrods.

http://www.ecihotrodbrakes.com/55-62-Chevy-offset-power-booster.html

jody in georgia · Joined: 25 Jul 2004 Posts: 12

one or two qustions one is where are you all finding clutch discs that are the correct spline I've called a company that will make a paddle style disc for 924 spline for 145.00 dollars just wondering second are you all using any kind of rear mount since the drive tube dosent have one I'm thinking the motor would be trying to drop in the rear . I'm fixing to start converting my 924 to v-8 and was thinking about using aluminum motor plates on front and rear of engine. but I like the idea of how you installed motor mount plate between frame and lower crossmember.

PORSCHEV · Posted: Mon Aug 09, 2004 8:38 pm Post subject:

I personally use all chevy gear from the adapter plate forward. That meaning I have a chevy cluth, pressure plate, flywheel and bellhousing. The drivetube and driveshaft were both modified to accept the parts.

I don't see any problems with the balance of the engine or wanting to tip back.
_________________
1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

jamez · Joined: 03 Nov 2002 Posts: 401 Location: Chehalis, Wa

I also have all chevy parts from the drive tube up. there shouldn't be any problems witht he motor rocking forward, I have driven my car pretty hard with no problems with the mounts. the drive tube is held pretty solid by the tranny.

jody in georgia · Joined: 25 Jul 2004 Posts: 12

so another words you all are cutting the shaft as well as the tube and welding a chevy input shaft . that was one way I was thinking but wasn.t sure if it would be stong enough. the way I was planing was cut the tube and make adapt. to fit chevy belhousing preferably from late model camaro or s-10 with 4.3 liter sense these have slave cylinders but not cut the shaft and get custom clutch disc made . I found a company that will make a disc to fit chevy flywheel and pressure plate but have the 13/16 24t spline but the draw back to this is when the disc wears out have to order another at 145.00. If I cut and weld on chevy shaft then can get disc anywhere local