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PostPosted: February 8, 2017, 3:11 pm 
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Joined: December 29, 2007, 10:41 pm
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Location: Vancouver, BC
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


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PostPosted: February 8, 2017, 3:44 pm 
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Joined: July 17, 2008, 9:11 am
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Location: West Chicago,IL
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.

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PostPosted: February 8, 2017, 3:46 pm 
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Joined: December 29, 2007, 10:41 pm
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Location: Vancouver, BC
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.


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PostPosted: February 9, 2017, 3:02 am 
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Joined: August 11, 2013, 6:03 am
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Location: CNY
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
04 RX-8 Touring RIP
90 Ram 50 4x4 V6
91 3000GT VR4
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.


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PostPosted: February 9, 2017, 11:36 am 
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Joined: December 29, 2007, 10:41 pm
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Location: Vancouver, BC
300D50,
Thanks for the offer, would you be able to measure the inner diameter of the pressure plate?

Rod


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PostPosted: February 9, 2017, 2:33 pm 
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Joined: December 4, 2010, 1:53 pm
Posts: 47
Location: Edmonton, Alberta, Canada
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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PostPosted: February 10, 2017, 2:06 am 
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Joined: August 11, 2013, 6:03 am
Posts: 329
Location: CNY
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. :razz:

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Walt
04 RX-8 Touring RIP
90 Ram 50 4x4 V6
91 3000GT VR4
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.


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PostPosted: February 10, 2017, 11:28 am 
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Joined: December 29, 2007, 10:41 pm
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Location: Vancouver, BC
300D50,
Thanks for the measurements, I've now ordered the flywheel I was eyeing up, fingers crossed it will work.

Cheers,
Rod


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