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MillsMotorsport
Joined: 05 Nov 2011
Posts: 28
Location: Melbourne, Australia
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 Posted: Tue Nov 29, 2011 10:43 pm Post subject: Any pics of a 924 cross member modified for 944/968 engine? |
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Hi All,
Just looking at some options for engine swaps, whilst keeping it Porsche.
I'm interested in swapping a 944 S2 3.0L 16V into a 931, the main fabrication required is the cross member. Just wondering if anyone has pics of a modified 924/931 cross member to match the 944/968 engine mount locations?
Thanks,
MillsMotorsport
Melbourne, AU |
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the_mad_electrician
Joined: 16 Nov 2009
Posts: 1073
Location: Central Georgia
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| Posted: Tue Nov 29, 2011 10:52 pm Post subject: |
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Raceboy had pics of a crossmember he modified to fit a 2.5 since the 3.0 is the 2.5s larger brother it should be the same. I'll see if I can find it for you...
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81 924 N/A
2004 Ranger "Edge"
2005 Mazda 6 |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11723
Location: PacNW
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| Posted: Wed Nov 30, 2011 12:32 am Post subject: Re: Any pics of a 924 cross member modified for 944/968 engi |
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| MillsMotorsport wrote: | | the main fabrication required is the cross member |
. . .and fitment of the bellhousing and torque tube, and mounting the gearbox. This is a monster project.
Raceboy pics are HERE.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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MillsMotorsport
Joined: 05 Nov 2011
Posts: 28
Location: Melbourne, Australia
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| Posted: Wed Nov 30, 2011 8:42 am Post subject: Re: Any pics of a 924 cross member modified for 944/968 engi |
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| Rasta Monsta wrote: | | MillsMotorsport wrote: | | the main fabrication required is the cross member |
. . .and fitment of the bellhousing and torque tube, and mounting the gearbox. This is a monster project. |
Not to mention wiring, adding the ECU, plumbing etc, etc. Whilst it may be a lot of work, other than the cross member, it's a matter of bolting in the later model parts.
The engine is already out of the car (I bought it that way) and the transaxle was just bolted up for transport on the trailer. That's why I'm thinking about this now, the car is already half pulled apart.
The other option is rebuild the bottom end of the existing 931 engine (probably add forged pistons), K26#8 hybrid turbo (the current CGT turbo has a munched compressor wheel), 951 FMIC, modify inlet manifold and add EFI (if you say that really quickly, it doesn't sound like that much!!)
Both options probably require an upgraded transaxle (probably 951) if I'm going to use the car for track days and hill climbs.
It depends on if I want to modernise the original engine, or just fit a more modern engine............. |
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the_mad_electrician
Joined: 16 Nov 2009
Posts: 1073
Location: Central Georgia
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| Posted: Wed Nov 30, 2011 9:46 am Post subject: |
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Good luck getting rod bolts for that 931, they don't exist. That was one of the main factors in me desiding to get rid of my 924.
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81 924 N/A
2004 Ranger "Edge"
2005 Mazda 6 |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11723
Location: PacNW
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| Posted: Wed Nov 30, 2011 12:46 pm Post subject: |
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Someone will pipe up if I am wrong, but I don't beleive the 968 gearbox will bolt into a 931 tub.
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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MillsMotorsport
Joined: 05 Nov 2011
Posts: 28
Location: Melbourne, Australia
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| Posted: Wed Nov 30, 2011 10:21 pm Post subject: |
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| the_mad_electrician wrote: | | Good luck getting rod bolts for that 931, they don't exist. |
Surely there's something in the ARP catalogue that is just about the same size, even if they were slightly larger in diameter, you could machine the rods to accept them. I'm sure I had something similar done with a Datsun rally car engine I had years ago. We used big block Chev rod bolts in Datsun L18 rods from memory. |
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v8carreragts
Joined: 05 Sep 2003
Posts: 665
Location: Tucson, AZ
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| Posted: Thu Dec 01, 2011 12:45 am Post subject: |
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| Quote: | | Someone will pipe up if I am wrong, but I don't beleive the 968 gearbox will bolt into a 931 tub. |
I believe all you need to do is adapt the 931 mounts to the transaxle. The 968 (O31) mounts the same as the 944/2 cars using a removable crossmenber. But it has already been done.
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84 944--924 Carrera GTS clone w/520HP Chevy 302 V8--RUNNING!
2015 AUDI Q7
2013 Dodge Charger R/T AWD HEMI
2013 Chevy Cruze |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11723
Location: PacNW
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| Posted: Thu Dec 01, 2011 3:20 am Post subject: |
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Hmm, thought the 6-speed hit the spare tire well.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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v8carreragts
Joined: 05 Sep 2003
Posts: 665
Location: Tucson, AZ
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| Posted: Thu Dec 01, 2011 4:33 am Post subject: |
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The 6 spd has a shorter TT.
_________________
84 944--924 Carrera GTS clone w/520HP Chevy 302 V8--RUNNING!
2015 AUDI Q7
2013 Dodge Charger R/T AWD HEMI
2013 Chevy Cruze |
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