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I'm trying to sort out the clutch situation on my Zetec to Renault transaxle conversion (Lotus Europa) and I have an issue intercorsing them together. The stock Focus Zetec clutch is 9 7/16" diameter, while the biggest Renault disc I can get is 220mm (8 5/8"). After going through Rockauto's website, it appears the Escort ZX2 came with the Zetec and used an 8 7/8" clutch. So, fingers crossed the flywheel and pressure plate will work with the Renault disc. But, this is where I need some help with dimensions. Sachs lists the same clutch disc (SD605) for the ZX2 and various Mazda's including the 83-91 RX7s. I'm hoping someone can measure the outside diameter and inside diameter of the friction surface for me. Once I have the dimensions I can compare them to the Renault disc, and if my theory is correct, the flywheel should work.

I have looked into getting the Renault clutch center put into a Focus disc, but they dont seem to match up in any way. It was suggested that a Toyota truck disc could be mated to a small Toyota disc (from a 4AG etc) which has a spline that is very close to the Renault spline. But, I'd rather have an off the shelf solution.

Rod

I went to Rockauto.com and grabbed a photo of the N/A clutch. The friction surface OD appears to be the same as the OD of the disk, 8-7/8". I then inserted it into AutoCAD and scaled it to 8.875"OD. I get 5.9 +/- .032 ish for an ID of the friction surface. Hope this helps.

_________________
Chuck.

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Thanks! Now I'm wondering why I didn't think of doing the same thing. I scaled some flywheel photo's but for some reason didn't clue into the photo's of the clutch disc.

I have a 91 NA RX7 flywheel and PP I can get more exact dimensions off if needed.
I also have an 04 RX-8 PP, a 90 RX7 Turbo PP, and an 87-95 RX-7 Turbo Racing Beat aluminum flywheel laying out.

If you need any info, feel free to ask.

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Walt
06 RX-8 Shinka
04 RX-8 GT
06 325xi
Some people never have anything except ideas. Go do it.
Emissions & fuel economy haven't exactly been areas of strength for past rotary power plants, but absolutely no one with a soul has ever cared.

300D50,
Thanks for the offer, would you be able to measure the inner diameter of the pressure plate?

Rod

I had a similar issue to mate a Supra W58 transmission to my 4AGE engine. What I did was download the Exedy catalog, 200 or so pages and found a match with clutch disc size and spline size and count (bingo 1971 Celica clutch worked)
Maybe you can find a match for yours.
cheers
Doug
https://www.exedyusa.com/wp-content/upl ... og-web.pdf

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book 4AGE build, Supra W58 transmission, Corolla GTS live axle

The ID of the PP friction surface is 137mm, OD is 227mm.

Clutch disc friction material ID is 150mm, OD is 225mm.

Sprung hub OD is 115mm, with a protrusion of 12mm from clutch friction surface (Friction surface worn to 7.5mm total thickness.)

Hope that helps.

_________________
Walt
06 RX-8 Shinka
04 RX-8 GT
06 325xi
Some people never have anything except ideas. Go do it.
Emissions & fuel economy haven't exactly been areas of strength for past rotary power plants, but absolutely no one with a soul has ever cared.

300D50,
Thanks for the measurements, I've now ordered the flywheel I was eyeing up, fingers crossed it will work.

Cheers,
Rod