924Board.org

[rummyrenz2]

hi,i,ve got myseif a 924 for really cheap and i really want to know if i can fit a 944 or an 924s engine.I,ve got alot of time on my hands at the moment so if anyone could help me it would be great.cheers matt
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M.P.RENDLE

[gohim]

The 944 and the 924S both use the same 2.5L 4-cylinder engine.

You could also consider the 931 (924T) or 951 (944T) turbo engines.

Note that maintance is much higher and expensive for any of the above engines than the standard 924 engine, as all these other engines are interference engines, and the 924 engine is non-interference.

Since the early 944 and the 924S are basically the same as the 924 with different engines, engine mounting points, and detail improvements, you canfit the 2.5L engine into the 924 chassis.

The problem will be the cost, and the condition of the engine that you choose to transplant. The 924 has a mechanical clutch. You would have to convert to the hydraulic clutch to use the 924S/944 engine. The drive shaft diameter is also larger on the 924S/944/931 (924T) then it is on the 924, and you would have to switch to the larger drive tube, which would also require a transmission change.

The engine mounts very very different, and switching to the 924S/944 engine mounting and front crossmember would require cutting open the front frame members, and splicing in the correct parts from a 944 or 924S. The other alternative suggested by some people (not done by the people who suggested it) would be to modify the existing 924 front crossmember to work with the 924S/944 engine mounts. If you decide to do this, you would also need to modify the steering racks mounts on the crossmember if you want to use the 924S/944 power steering.

The 924S/944 engine that you come up with should have the "front of engine" service performed, before you install it. That includes the replacement of the timing and balance shaft belts, the water pump, front of engine oil seals, belt rollers, and belt pulleys. This service must be performed every 3 years or 30K miles, whichever occurs first. Parts cost will be between $600-$1000. The clutch should also be checked over very carefully, and replaced if any parts (parts cost $350 for the basic clutch, $450-$500 with everything) show wear, because replacing the clutch in a 924/944/924S is expensive (8-14 hours "book" labor).

For all this effort, you get a 147hp (1983-1987)-158hp (1987-1988) 2.5L engine. The stock US market 2.0L 924 engine is rated between 95hp (1977)-115hp (1981-1982).

Before you get started ripping the enigne your your newly acquired 924, I would like to point out that you could buy a running or non-running 924S or 944 (needing some TLC and mechanical work) for the same or less money than a engine conversion is going to cost you. I would think that you would be better off, getting the 924 to run well, then selling it, and using the money to buy a 924S or 944, if that is what you really want.

[rummyrenz2]

thanks for the advice,i think looking at what you just said im going to buy myself a 944 or 924s.thanks for the help.
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M.P.RENDLE

[Lizard]

also there is one other major difference in the 944/924S than the 924, the rad loaction, the rad is an aluminum rad and sits UNDER the hood latch mechanism where the 924 sits behind it, there isnt enough room for the engine if you leave the rad in its current location and you may have to cut off the hatchrelease mech and weld on a good 944 unit.
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3 928s,

[emoore924]

Just as a point of information regarding radiator fitment, I have actually have run a 944S radiator in my 924 n/a without any mods at all other than special fit for the hoses and a little tape around the edges to seal things (would have done this anyway whether 924 or 944 radiator). Much better cooling capacity than the spec rad.

Works great!

[simsport]

Could you tell me what you mean by 'special fit' hoses etc?

My intercooler shrouds my radiator a little and I wanted a better rad to replace the original unit. I wanted more capacity and better heat transfer.

Does anyone have experience of what works best in tuned 931 cars?

Cheers
Simon
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Blown is always best!