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76 924 winter transplant. Need advice.

 
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Trgrenier  



Joined: 05 Dec 2012
Posts: 9
Location: Calgary AB

PostPosted: Wed Dec 05, 2012 6:21 pm    Post subject: 76 924 winter transplant. Need advice. Reply with quote

Hey there, I'd just like to start by saying this is my first post on the forum, so a little back ground info I just bought a 76 924 in perfect condition in August and would like to do a build as I have a shop with full lifts ect for free to use until may.

So what I'd like to do I also have a 1980 931 engine and the 5 speed Gretag transmission. I just finished a complete rebuild on the engine including a new kkk 26 with a 1 bar spring in the waste gate (I will be fabbing a custom front mount inter cooler as well). But I'd like to know if the trans will fit in easilly or what else I will need to seek out before I begin to pull the old engine and everything out.

Do the mounts match? Bell housing? Do I need to change the torque tube? Any info will be greatly appreciated.

Thanks,

Tyler
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1976 924 project. 2004.5 bmw 330xi m package for winter.
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spannernut  



Joined: 09 Jan 2010
Posts: 74
Location: ireland

PostPosted: Thu Dec 06, 2012 7:56 am    Post subject: Re: 76 924 winter transplant. Need advice. Reply with quote

Trgrenier wrote:
Hey there, I'd just like to start by saying this is my first post on the forum, so a little back ground info I just bought a 76 924 in perfect condition in August and would like to do a build as I have a shop with full lifts ect for free to use until may.

So what I'd like to do I also have a 1980 931 engine and the 5 speed Gretag transmission. I just finished a complete rebuild on the engine including a new kkk 26 with a 1 bar spring in the waste gate (I will be fabbing a custom front mount inter cooler as well). But I'd like to know if the trans will fit in easilly or what else I will need to seek out before I begin to pull the old engine and everything out.

Do the mounts match? Bell housing? Do I need to change the torque tube? Any info will be greatly appreciated.

Thanks,

The engine gearbox and torque tube from the 931 should all fit ,with no modification,but you will have to use the 931 torque tube as the N/A 924 has a 20mm tube against the 931 using a 25mm tube.
you will also need the ignition module, airbox, and i think the fuel distribution unit is slightly different, you might have to use the 931 distributer,also before you change engines make sure the thermo time switch is good as it's a bitch to change when the engines mounted.
hope that helps.

Tyler
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Trgrenier  



Joined: 05 Dec 2012
Posts: 9
Location: Calgary AB

PostPosted: Thu Dec 06, 2012 8:19 am    Post subject: Reply with quote

Thanks that definitely helps me out, I have everything you mentioned except the 931 torque tube. So ill have to find one as well.
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1976 924 project. 2004.5 bmw 330xi m package for winter.
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spannernut  



Joined: 09 Jan 2010
Posts: 74
Location: ireland

PostPosted: Thu Dec 06, 2012 8:43 pm    Post subject: Reply with quote

i would imagine the early 944 torque tube should fit.
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FJ40Jim  



Joined: 13 Feb 2011
Posts: 26
Location: Central Ohio, USA

PostPosted: Fri Dec 07, 2012 1:27 pm    Post subject: Reply with quote

AFAIK, the 78-earlier cars use an Audi 4speed transaxle.
The 79-80 5spd in a 931 is the Porsche snail type.

The snail uses a very different mounting arrangement. To fit it in a 76 body will require updating to the 79-80 rear suspension carrier.

It may be easier to get a junkyard 81-later 924/944 audi 5speed transaxle/tork tube/shifter/carrier.

Also, if using the 931 or 944 BH, they use a hydraulic slave cylinder, instead of cable clutch actuation in the '76. Might want to get the clutch pedal & MC & lines from a 944.

HTH
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