Hi all,

I am having some problems with my 87 924S 8v 2.5 right now and I am weighing my options because I am thinking that the motor I have is just tired and may need to go.

I can pick up a S2 3.0 16v

"89 S2 3.0 16V 80K miles . The guy I bought it from said he did a compression test and all the cylinders were over 210 . So what it is a engine missing intake , all accessory's alternator , PS pump , flywheel ,exhaust header . It has complete block, all timing gears etc in front of engine , crank pulley , cyl head ,valve cover , distributor ."

I am weighing my options right now for a winter swap out.

I have a 16v intake
I only need an alternator so I can make/locate/modify a bracket to fit
I can make a header, or locate one [I am a welder fabricator]
I will need the air meter

Is there a chip to install in my DME to clone the other harness/DME?

Will my flywheel/clutch assembly fit on the S2 crank/block?

I have a new microsquirt efi system, with new harness and new sensors, that I can swap in and I have a crank trigger I can use if I use the 2.5 flywheel.

Seems like the microsquirt is the most cost effective solution. Then as I get better I can swap in the parts to become class legal for club racing.

Does anyone else here run a mega/mircosquirt?

What should I pay for the S2 motor if I buy it?

Anybody have any parts to help with the swap in the CT or New England area?

*I bend and weld in custom cages*

Thanks
Pete

 

Whoa!!! A 924 with this engine in it.... so nice. Sorry for the distraction, but if that's a pic of your car on the trailer, would you do me a solid & show some more pics of it?

 

https://picasaweb.google.com/1177286.../October212012

From when I bought it, putting the cage in it, and various parts and shots.

 

Do you need a 3.0? I'm making a 2.5 DOHC using a 928 S3 cylinder head from the 928 85/86 years. It's doesn't cost much. A custom intake manifold will have to be made regardless with any DOHC turbo. But the turbo exuast bolts right up to this 928 S3 head and it has 56cc cumbustion chamber which lowers the CR to 7.53 using turbo Pistons. I'm going to use 944s Pistons and see if it's non interference, it should be. Check out my thread I started on the subject in the turbo forum. If I knew how to paste it here I would.

 

Beautiful cage, looks like a fast car.

 

Thanks- but looks can be deceiving lol.

I was able to do a 1:10.1 at lime rock in the DE green run group - with no power past 4500 rpm. I know the time is not fast, but the fact that I was getting barely 90mph on the straight knows that it will do just fine when I get the engine problems figured out.

 

I'm running Microsquirt and have a ton of documentation and tunes. Ask away. 10/10 would recommend, throw the afm in the garbage.

 

You should find a 968 3L with the 6 speed. I think that would be worth the time and effort doing a swap.

 

I have little money into this car and I don't have much to spend. I honestly could make the plea that this car is legal 24 hours of lemons budget build.

Including the cost of the car, the pipe for the cage, various parts, etc..minus what I sold off it to recoup money- I have less than $2000 in it. $3000 when I add in the slicks.

If the 2.5 NA flywheel will bolt to the S2 motor-I am going to just microsquirt it with coil on plug ignition.

Anybody know the weight difference between a 8V and 16V motor? Has to be less than 50lbs ?

 

I'm not sure about the belt drive of the 16v. But I can tell you right now that getting a 36-1 trigger wheel on the front of the crank is the way to go. A lot of people who have tried megasquirting 944s have crank signal issues with the stock flywheel speed/reference sensors. They are noisy and unreliable, just look at how many no-starts and stalling issues are due to them. Never had a single rev/sync issue with the 36-1 and a hall effect sensor, all the way to redline.

 

Ahh gotcha.

I cannot remember which had the dual mass flywheel.

 

If you have no power past 4500 RPM you might try an offset cam key and retard the spark a bit for a bit more power on the top end. You may sacrifice some torque out of the corners, though. jus sayin.

 

flywheel will bolt up.

the 16v head is a lot heavier than the 8v head but overall the motor weight is very close, maybe 25lbs more?

 

The 968 is the one with a DMF. I believe the S/S2 can use an NA clutch and flywheel, the only issue is the different pickups for the flywheel sensors. But if you're going to megasquirt and a front crank sensor, that's a non-issue.

I plan to megasquirt my S soonish and I will be using an NA clutch/flywheel due to the availability of lightweight flywheels for the NA (but not for the 16V motors).

 

Please, for everything good do not do all that work unless you find a 968 motor and a 951 or 968 transmission (I'd go with 951 trans).

Been there, done that. The 968 motor is a beast in the 944, even more so in the 924. S2 would be... a lot of work.