Will a S2 engine, flywheel and clutch mate to a S3 gearbox?

wiggman2030 · Post by **wiggman2030** » Thu Jun 06, 2013 9:37 pm

Hi everyone. I recently changed my engine on the S3 rx7 by putting a S2 block with flywheel and clutch already attached. The splines were the same and it bolted straight onto the S3 gearbox. I went to move it today and when I did I heard a nasty grinding noise like the prop was rubbing on something. I can't check it myself so I just thought I'd ask if I have made a mistake by slotting the S2 stuff to the S3 gearbox. Also the clutch feels like there's hardly any bite to it. It might just be how it is though

Cheers

TOOL · Post by **TOOL** » Thu Jun 06, 2013 9:58 pm

The gearboxes are virtually identical so shouldn't be any issues there.

The blocks are the same re rear plate, but the flywheel mass is different and S3 clutch is 225mm vs S2 215mm.

Not sure what's up. Should swap over fine. Check round the clutch/flywheel.

ian65 · Post by **ian65** » Thu Jun 06, 2013 9:59 pm

yes, the s3 gearbox will bolt up and work no problem so your grinding noise isn't caused by a mis-match

wiggman2030 · Post by **wiggman2030** » Thu Jun 06, 2013 10:13 pm

OK cheers, I think it might be the prop then as it seems to vibrate through the car as well. As I'm gonna need a new clutch now.... will I'm guessing I will need to buy a S2 clutch? I'll let you know how I get on with the noise

TOOL · Post by **TOOL** » Fri Jun 07, 2013 4:25 am

You want a 215mm clutch for a S2.

You haven't switched flywheels or anything have you? I know you said you didn't but I'm just checking.

wiggman2030 · Post by **wiggman2030** » Fri Jun 07, 2013 4:01 pm

I kept the original S2 flywheel on as well. I'll get a 215mm one then

Thanks for the help guys

KiwiDave · Post by **KiwiDave** » Fri Jun 07, 2013 5:25 pm

It might be something as simple as a heatshield fouling the driveshaft. This happened to me a few months back. Jack up the rear under the diff housing so this simulates load on the suspension and turn the wheels. Have a look at the same time to see if anything is touching the driveshaft.

wiggman2030 · Post by **wiggman2030** » Fri Jun 07, 2013 8:10 pm

Well I took your advise and jacked up the rear wheels by the diff. I spun them and found out that it was the propshaft catching on the exhaust heat shield. I don't know how it managed to bend itself round to that point but at least it's fixed now... phew

Thanks guys. Just need to get a clutch now and fit that lol.

ian65 · Post by **ian65** » Fri Jun 07, 2013 8:24 pm

that's good news then

you just need a clutch plate like this to sort your clutch....

http://www.ebay.co.uk/itm/MAZDA-RX2-RX3 ... 3381fef100

wiggman2030 · Post by **wiggman2030** » Fri Jun 07, 2013 10:25 pm

ah nice one. Will I not need a clutch cover then? If I can get away with just the plate that would be good

Thanks for the link

www.RX7fb.com

Will a S2 engine, flywheel and clutch mate to a S3 gearbox?

Will a S2 engine, flywheel and clutch mate to a S3 gearbox?

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb

Re: Will a S2 engine, flywheel and clutch mate to a S3 gearb