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Sharky
Joined: 29 Jun 2012 Posts: 14 Location: Australia
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Posted: Sun May 05, 2013 12:53 pm Post subject: 944 2.5L Turbo into a 924?? |
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Hi all,
I am the proud owner of a 1981 924 Turbo (931). It has the GT Carrera body kit, looks good and runs pretty well.
It is, however, a project vehicle. It is currently registered and running but will take alot of time, money and patience to get it up to the level of vehicle I would like it to be. Including repaint, interior work and some typical TLC that is given to older vehicles.
But I digress, I would really like to ask the gurus and long time owners/modders a few questions regarding the upgrades I would like to do.
Firstly, Will a 2.5L 944 turbo engine fit in to my 924 without any major mods? And if so, assuming I brought a rebuilt long block, would the 931 parts fit onto the 944??
I have done some research but I just can not find out if the 2.5L 944 engine is the same slant 4 style engine as the 931.
Secondly, If I was to keep my current, original 931 engine and upgrade the turbo... can I mount an aftermarket turbocharger in the same place as the original, with a customized manifold flange to suit said turbo? Or would I have to perform a major plumbing job and sit the turbo on the inlet side of the engine? Assuming that I would probably add a front mount intercooler to the mix, new plumbing is not out of the scope of possibilities, just wondering if it is a necessity.
A big thank you to anyone/everyone who takes the time to offer any advice or suggestions on my plans to take on a pretty big project that will get my rig to a respectable level.
Cheers,
Sharky. |
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924aussie
Joined: 02 Feb 2006 Posts: 1009 Location: Chinchilla Queensland Australia
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Posted: Sun May 05, 2013 2:58 pm Post subject: |
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Sharky,
First question is where in OZ are you. You may be close to some members that can help.
Taken you nearly a year for your first post
Alan _________________ green 924 .. 1980 rego 924PSH
1998 Mopar Neon ... sick
2003 Challenger / Montery 4WD
1995 Hyundai Scoupe ... sold
1998 Nissan Silvia ... sons back from OS he has taken it
BIG BLOODY MOTORHOME 300zx Sold
1980 Fire truck Sold |
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Sharky
Joined: 29 Jun 2012 Posts: 14 Location: Australia
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Posted: Sun May 05, 2013 3:20 pm Post subject: |
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Hi Allan,
Cheers for the reply.
Glad you mentioned that... I totally forgot to mention my locale
I am in Central Queensland, about 2.5 hours SW of Mackay, in a small town called Moranbah.
Yea, it did take me a while, I've spent more time reading through forums than posting. I've found with most forums it's better to spend time reading posts and seeing what sort of crowd generally reside within.... this was a lesson I learned on Whingepool (Whirlpool) Forums.
That being said, I have learned a lot over that year.
Cheers,
Sharky. |
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Rasta Monsta
Joined: 12 Jul 2006 Posts: 11724 Location: PacNW
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Posted: Sun May 05, 2013 3:45 pm Post subject: |
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How would you define "major mods?" Of course a 2.5 will fit in your 931. _________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Sharky
Joined: 29 Jun 2012 Posts: 14 Location: Australia
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Posted: Sun May 05, 2013 4:01 pm Post subject: |
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Quote: | How would you define "major mods?" |
By major mods, I mean any cutting of the chassis, changes to engine mounts and so on.
I'm still pretty new to Porsche engineering, but I like it. Since I grew up owning Holdens.... this is a pretty new ball game to me. |
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leadfoot
Joined: 11 Dec 2002 Posts: 2222 Location: gOLD cOAST Australia
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Posted: Sun May 05, 2013 5:15 pm Post subject: |
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as far as keeping stock manifold you can do a hybrid turbo and use a different compressor and the same hotside, this is whats on my car.
essentially the 924S ws the same car with a 2.5 in it, 951 was the turbo variant and refined version with uprated transaxle.
Stu _________________ 1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress... |
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924aussie
Joined: 02 Feb 2006 Posts: 1009 Location: Chinchilla Queensland Australia
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Posted: Sun May 05, 2013 6:26 pm Post subject: |
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Any current pictures and what do you intend to do with the old motor ? _________________ green 924 .. 1980 rego 924PSH
1998 Mopar Neon ... sick
2003 Challenger / Montery 4WD
1995 Hyundai Scoupe ... sold
1998 Nissan Silvia ... sons back from OS he has taken it
BIG BLOODY MOTORHOME 300zx Sold
1980 Fire truck Sold |
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morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
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Posted: Sun May 05, 2013 6:43 pm Post subject: |
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Sharky wrote: | Quote: | How would you define "major mods?" |
By major mods, I mean any cutting of the chassis, changes to engine mounts and so on.
I'm still pretty new to Porsche engineering, but I like it. Since I grew up owning Holdens.... this is a pretty new ball game to me. |
Then no the 2.5 uses different mounts and to have the 2.5 installed you need to cut and weld a bit of chassis.
Keep the 931 a 931 and the 944 a 944. The 931 is becoming a rare vehicle..and you'll be happy to own a not so molested one.
I own a 924 that i modded into a 924 turbo using factory parts. Further i've upgraded the 931 to a K27/k26 turbo hybrid and added a FMIC...trust me..the 2.0L turbo goes like stink _________________ https://www.the924.com |
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nickthompson
Joined: 26 Mar 2013 Posts: 873 Location: Central Georgia
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Posted: Sun May 05, 2013 11:21 pm Post subject: |
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Why do guys in the Porsche community make such a big deal out of chance of motor mounts and doing minor cutting to make things fit? People in the hot rod community do this all the time and enjoy it. |
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Carrera RSR
Joined: 08 Jan 2010 Posts: 2309 Location: Somerset, UK
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Posted: Mon May 06, 2013 12:28 am Post subject: |
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If it were me I'd make the 931 engine produce 250bhp plus than make it a 931/944 frankenmotor!
It's not a straight engine swap. Mounts, TT, gearbox, torsion bar carrier/gearbox mounts, drive shafts all have to be considered. You may as well put the whole 944 turbo drive train in. If you do this it may be easier to stick 924 rear wings onto a 944 along with the CGT arches. _________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
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Posted: Mon May 06, 2013 1:07 am Post subject: |
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nickthompson wrote: | Why do guys in the Porsche community make such a big deal out of chance of motor mounts and doing minor cutting to make things fit? People in the hot rod community do this all the time and enjoy it. |
Because hotrods are piece of sh!t non working, non practical rust buckets that are cool to look at while the 924 is a propper sports car that DOES NOT RUST if no body work(cutting/welding) is done on them.
The 924 survived until now and will continue to survive from now on BECAUSE IT DOES NOT RUST. If you molest the body of your 924 it wont live or be worth much.
The idea when modding is not to trash the qualities of the car but to improve something...where is the improvement when you just reduced its life ?
Plus..there's the better alternative...just slap the 924 pannels to a 951 and you're done... _________________ https://www.the924.com |
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nickthompson
Joined: 26 Mar 2013 Posts: 873 Location: Central Georgia
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Posted: Mon May 06, 2013 1:35 am Post subject: |
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That is quite possibly the worst answer to an honest question I have ever heard. |
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morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
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Posted: Mon May 06, 2013 3:42 am Post subject: |
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nickthompson wrote: | That is quite possibly the worst answer to an honest question I have ever heard. |
why?
i told you why I dont fancy cutting up my long life chassis...now tell me how you dont find longevity of the body and chassis an incredible thing to have on your beloved sports car ? _________________ https://www.the924.com |
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nickthompson
Joined: 26 Mar 2013 Posts: 873 Location: Central Georgia
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Posted: Mon May 06, 2013 6:15 am Post subject: |
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The unnecessary insulting hot rods and their owners/mechanics got under my skin a bit. Some of my good friends hot rod anything they get their hands on and have great metal working skills and massivd amounts of knowlage. If you consider how much older theor cars generally are the conditions they are in is generaly good compared to other cars fromthe same era. Look for a rust free 356 tthat's been in a barn for 35 years. |
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fiat22turbo
Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR
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Posted: Mon May 06, 2013 6:39 am Post subject: |
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Okay, enough BS. Bottom line? The 2.5L requires different mounts and frame hacks to fit the engine and crossmember/steering rack.
The TT, transaxle, shifter, rear suspension, and most of the front suspension will swap over though.
An Audi 20-valve 5- cylinder is a better fit, just not as well documented yet. _________________ Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
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