924s to 944 turbo swap

[BURNOUTsi]

I have a 88 924s and want to know what is necessary to swap in a 944 turbo or 968 motor in. Thanks a lot to anyone who can help!

[SlowToady]

Engine, wiring harness, DME, sheet metal mods to the front to make the intercooler and radiator fit, the turbo plumbing...a damn lot?

The 968 engine would be easier I presume, but they are rather pricey.

Why not just stick with the 2.5L? There ARE mods for it, and you CAN make it fast. Not cheap, but possible. You can do quite a bit to the 2.5L unit for the purchase price of a good 968 engine. And don't bother getting one with a damaged head thinking it will be cheap to replace. Porsche only built a handfull of 16V heads. I've heard the cost of repairing this head can run up to the cost of the complete engine.

Just things to consider...

[tifosiman]

Don't forget to add a stronger transmission to that list, as either one of those motors would turn the pinion gear in a n/a transmission into metal confetti.

[flangermog]

You would probably find an S2 engine easier to get hold of, and it's not that different to a 968 engine. 3.0L 16v etc. but like SlowToady says they're not cheap (any of them) and tifosiman is correct about the transmission. Porsche design and build very efficiently and most of the major component parts (while over engineered by everyone elses standards)have stringent tolerances which if ignored will cost you plenty.

Still, all of the above have got to be better than dropping a V8 in there ;-)

[952]

If you want more bang, it may be more effective to N20 or supercharge the existing engine. Dont go there with the V8 again Flangermog! lol

[DannoXYZ]

Here's all the parts you need:



Although they left off the intercooler pipes, harness and two computer boxes...

[jm951]

If you are really serious, the best way is to get a wrecked 951 and swap over whatever you need from the parts car. It can be done, and has by a guy over on the Rennlist except he did it to a 944.

[SlowToady]

Hmm...Not trying to cause some hucklebuck, but the guy just asked how to put a 951 engine in the 924..not what he needs to turn his 924 into a 951. We all know the brakes and blah blah blah are different in the 951.

You don't need to swap brakes and what not to do an engine swap. Just an engine and its accessories.

Not trying to stir the pot, but c'mon...

[952]

Originally posted by SlowToady
Hmm...Not trying to cause some hucklebuck, but the guy just asked how to put a 951 engine in the 924..not what he needs to turn his 924 into a 951. We all know the brakes and blah blah blah are different in the 951.

You don't need to swap brakes and what not to do an engine swap. Just an engine and its accessories.

Not trying to stir the pot, but c'mon...

how do you know the brakes are sufficient to handle the extra power? I dont know if yuou have laws in the US like this, but in NZ, but you do modifcations you must prove the brakes can stop the car! I would not think it that safe using 924 brakes... just an observation

[jm951]

Ok then, at the bare minimum, he'll need the engine, DME, KLR, associated wiring harness, transmission, clutch, exhaust system, instrument panel (yes, they are different), oil cooler, and that's just off the top of my head. Now this is way easier to do if you have a wrecked 951 onhand to take the parts from as needed instead of scrounging. But can also do it one piece at the time if you insist, but I'd bet that he's constantly going to be finding that he needs a couple extra pieces.

[952]

if you get a wrecked 951... put the 924 parts into it to make it better then you have a 951 to 924 hybrid :P

[SlowToady]

how do you know the brakes are sufficient to handle the extra power?

I don't know, nor do I care, whether or not the brakes on the 924 are sufficent to handle the extra power, because the question was regarding what is required to put a 951 engine into a 924 chassis. The question was not "What is required to put a 951 engine in a 924 chassis and make sure that it has the releated equipment available to make good and safe use of the extra power that the 951 engine produces".

No, at the bare minimum, he does NOT need the transmission. Why would he need the transmission? Sure, the 951 tranny is stronger in the R&P, but there are 944-V8 guys running SBCs with a stock NA 944 tranny. The 951 tranny is NOT required to make the engine work. It would be a good idea, but the engine won't not work without it.

Like I said, I'm not trying to cause any trouble but whenever anyone asks what parts he needs for the swap, everyone always jumps in about brakes, suspension, trannies, and so on. That's great and all, it never hurts to educate someone, but the fact of the matter is that they weren't asking of the differences between the two platforms.

G'day

[DannoXYZ]

Here's what happens to a 944NA tranny when the power is upgraded:



There have been numerous people who've put the '87+ 944NA tranny into a 951 to get the lower-gearing for autocrossing. I know 3 of them personally and not a single one of them have had the tranny last longer than 9-months. On those V8 conversions, we always see the articles and reviews. But that's just a snapshot of the state of the car right after the conversion, do we hear about the busted tranny a year later???

[jm951]

If all you want is power, just go get a NAWZ set up and blow the welds on the intake manifold.

[fast924S]

HAHAh DANNOXYZ, I have gone threw 3 trannies in my 924S the dam thing just loves to eat R&P. One of these days I will drop a regeared 951 tranny in her

[tifosiman]

Originally posted by SlowToady
[B]

I don't know, nor do I care, whether or not the brakes on the 924 are sufficent to handle the extra power, because the question was regarding what is required to put a 951 engine into a 924 chassis. The question was not "What is required to put a 951 engine in a 924 chassis and make sure that it has the releated equipment available to make good and safe use of the extra power that the 951 engine produces".

No, at the bare minimum, he does NOT need the transmission. Why would he need the transmission? Sure, the 951 tranny is stronger in the R&P, but there are 944-V8 guys running SBCs with a stock NA 944 tranny. The 951 tranny is NOT required to make the engine work. It would be a good idea, but the engine won't not work without it.

Like I said, I'm not trying to cause any trouble but whenever anyone asks what parts he needs for the swap, everyone always jumps in about brakes, suspension, trannies, and so on. That's great and all, it never hurts to educate someone, but the fact of the matter is that they weren't asking of the differences between the two platforms.

G'day

Sorry there, but you are being argumentative. If you came on this BBS and said "What does part#'s are the balance shaft seals, because they are leaking and I want to change them?", would you not want some other informed listers to kindly remind you that while you are doing that you should change the belts, waterpump, etc? Yes, you may have already known that, but what if you didn't? That's what this BBS is for. If you didn't need that info, well then a little redundancy never hurt anyone, right?

And I beg to differ. He may be able to get away without improving the brakes, but the transmission upgrade at the time he is doing the swap really is a MUST. Take it from someone who has blown up 4 transmissions (r&p's) due to autocrossing. N/A transmissions are inherently weak, if 143hp is enough to shred a pinion gear, 220+ HP is going to do it in no time flat. Why spend all of that time/money/effort doing a proper motor swap only to have the trans grenade right away and cause your project to incur even more down time?

Do it right, do it once.

At the very least, the additional info may come in handy for a future lister that is actually USING the SEARCH function and happens upon this post.

I guess to satisfy you, from now on when someone asks a question on this board, they will get a straight minimal-word-content answer with no additional info/insight that may be helpful.

[adrian jaye]

I have to agree with Tifosiman,

Sometimes people come on and ask a quick question. And a short sweet answer is not always the best.

Bare in mind that people are driving around in very fast cars, and any car which is unsafe causes a hazzord to anyone on the road.

There is nothing wrong with going overkill on the answer.

laters

A