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Old 10-30-2019, 08:48 PM   #1
golddayton101
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Default 84 240 Turbo Clutch Kit

I’m ordering my clutch kit this week and wanted to know if I can use a Sach kit for a 700 series turbo and just use the Pilot/Throwout bearing off of a 240? I remember reading a thread years back about other options like an Rx7 or Saab kits.
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Old 10-31-2019, 07:25 PM   #2
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You can use a 740 turbo disc and pressure plate with the 240 throwout bearing only if your car has the dished flywheel. If you have a flat flywheel turbo car. Then you need a clutch to match up to the flat flywheel.

However, the dished flywheel bolts on without modification so that is an option so you can use the 740 turbo clutch.
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Old 10-31-2019, 08:54 PM   #3
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Can the flywheel type be verified through the VIN?
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Old 10-31-2019, 10:46 PM   #4
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More likely the build date or a look in the engine bay.
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how psi stock cna support?

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Old 11-01-2019, 12:43 PM   #5
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Yes, as Ken points out. There are certain parts that were installed along with the bigger flywheel. Is your car a factory intercooled car?

The factory intercooled car has a small bracket for extra relays just in front of the battery. If so then you probably have the lager flywheel in there.
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Old 02-12-2020, 05:01 PM   #6
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I've looked at the front of the battery tray a didn't find any extra relays. I did find out that the intercooler was retro-fitted in 87' so it's not a factory intercooler car. Would it be safe to say that the standard 7XX m46 turbo clutch kits will work with no problem?
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Old 02-12-2020, 05:58 PM   #7
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That would mean it's been retrofitted and should have a flat flywheel clutch setup. I would recommend getting a dished flywheel and clutch setup which hold a bit more power than the stock flat flywheel turbo clutch. Mine didn't last very long when I intercooled my car and upped the boost to 10psi.

BTW the build date is on the drivers door.

Last edited by dl242gt; 02-12-2020 at 06:00 PM.. Reason: add comment
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Old 02-13-2020, 09:41 AM   #8
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Quote:
Originally Posted by dl242gt View Post
That would mean it's been retrofitted and should have a flat flywheel clutch setup. I would recommend getting a dished flywheel and clutch setup which hold a bit more power than the stock flat flywheel turbo clutch. Mine didn't last very long when I intercooled my car and upped the boost to 10psi.

BTW the build date is on the drivers door.
I have a flat flywheel clutch setup from South Bend Clutch that's good for 330ft.lbs. I do have a T5 swap but I'm sure they can come up with something for a factory trans.

Edit, I would support STS with above setup though, they make some cool stuff for our cars
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Old 02-13-2020, 02:00 AM   #9
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this will work with a 8.5in flat flywheel

https://www.stsmachininginc.com/coll...2-daily-driver
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Old 02-13-2020, 02:00 PM   #10
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Quote:
Originally Posted by 77volvo245 View Post
this will work with a 8.5in flat flywheel

https://www.stsmachininginc.com/coll...2-daily-driver
This is a great way to go. The flat flywheel is quite a bit lighter even stock. The engine revs up much better with it.
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Old 02-14-2020, 01:20 AM   #11
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The STS is a good option. Does it matter which 9” flywheel I choose to run? Later 240, 740/60?
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Old 02-14-2020, 12:55 PM   #12
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Flywheel only matters if you're using lh 2.4 which you are not.
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