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Old 02-08-2011, 06:23 PM   #1
zoomboom
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2000 L-Series 2.2L Sedan
Default L-Series Flywheel and Pressure Plate bolts

My 2.2l 5 speed manual transaxle is now ready for a new clutch and slave cylinder to be installed.

Before putting things back together, can anyone confirm:
-whether or not the factory service manual calls for the flywheel to crankshaft bolts to be replaced whenever removed
-whether or not the factory service manual calls for the clutch pressure plate bolts to be replaced whenever removed
-what torque is recommended for both the flywheel bolts and the clutch pressure plate bolts

I'm not sure if I can believe my Haynes manual.....the GM dealer has provided different advice.

Thanks for any help.

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Old 02-09-2011, 10:45 AM   #2
bill buttermore
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2000 L-Series 3.0L Wagon
Default Re: L-Series Flywheel and Pressure Plate bolts

Quote:
Originally Posted by zoomboom View Post
My 2.2l 5 speed manual transaxle is now ready for a new clutch and slave cylinder to be installed.

Before putting things back together, can anyone confirm:
-whether or not the factory service manual calls for the flywheel to crankshaft bolts to be replaced whenever removed
-whether or not the factory service manual calls for the clutch pressure plate bolts to be replaced whenever removed
-what torque is recommended for both the flywheel bolts and the clutch pressure plate bolts

I'm not sure if I can believe my Haynes manual.....the GM dealer has provided different advice.

Thanks for any help.
For the flywheel to crankshaft bolts, my 2000 L61 FSM (page 660) says to use new bolts and torque to 39 ft-lb + 25 degrees

looking for the pressure plate bolts now....

In the transmission section of the FSM, (page 180) no mention is made of new bolts that I can find. Same torque spec given for flywheel to crank, and for PP to flywheel bolts are to be tightened in a criss-cross pattern evenly turning no bolt more than 1/2 turn at a time. Torque spec is 11 ft-lb

I use blue threadlocker on flywheel and pressure plate bolts when I do 'em.

Last edited by bill buttermore; 02-09-2011 at 10:52 AM..

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Old 02-09-2011, 01:02 PM   #3
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2000 L-Series 3.0L Wagon
Default Re: L-Series Flywheel and Pressure Plate bolts

Let me clarify this comment:

In the transmission section of the 2000 Saturn L-series factory service manual (page 180), no mention is made of new bolts for either the crank/flywheel or pressure plate/flywheel. The same torque spec. is given for flywheel to crank bolts, (39 ft-lb + 25 degrees) as in the engine section of the FSM. For the pressure plate housing to the flywheel, bolts are to be tightened in a criss-cross progressive pattern evenly, turning no bolt more than 1/2 turn at a time. Torque spec is 11 ft-lb.

Last edited by bill buttermore; 02-09-2011 at 01:14 PM..

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Old 02-09-2011, 06:05 PM   #4
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2000 L-Series 2.2L Sedan
Default Re: L-Series Flywheel and Pressure Plate bolts

Thanks for the research Bill.

My Haynes manual suggested replacing the pressure plate bolts, which makes no sense given their low torque and excellent condition. I think I will just reuse with LockTite.

Neither Haynes nor the local GM parts folks recommend replacing the flywheel bolts, despite the fact that their torque spec reads like it might be torque-to-yield. The flywheel bolts are a Grade 11 bolt manufactured by KAMAX, and very costly to replace (about $14 /bolt up here). I'm still debating replacement, but at this point I'm half regretting removal of the flywheel, as it was still in very good shape.

I guess the bonus is that I was able to get to all of these parts without loosening any subframe bolts, so I don't need to buy all new subframe/steering gear bolts and carriage nuts, as recommended in the manual.

Thanks again.

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Old 02-10-2011, 12:08 AM   #5
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Default Re: L-Series Flywheel and Pressure Plate bolts

If it were me, I would try to obtain one new bolt, or better yet go to the dealer with my digital caliper and one of my old bolts in hand. I would ask if I could look at one if they had any in stock, purchasing one if that was the only way they would let me look. I would measure the length and diameter of the new bolt. If my old bolts looked good (good threads and good bearing surface under the head) and measured the same as the new bolts, I would not be afraid to re-use them. I am not recommending others re-use TTY bolts, just saying what I would do.

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Old 02-10-2011, 12:14 AM   #6
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2000 L-Series 2.2L Sedan
2000 L-Series 2.2L Wagon
Default Re: L-Series Flywheel and Pressure Plate bolts

I re-used these bolts in my recent engine swap. There was no mention in my FSM of replacing them. I would not re-use the flywheel bolts more than once, though.

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Old 02-12-2011, 09:30 PM   #7
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2000 L-Series 2.2L Sedan
Default Re: L-Series Flywheel and Pressure Plate bolts

For what it's worth, I bought one of GM's $14 (in Canada) replacement flywheel bolts to compare. It is a lower grade (10.9) bolt from a different supplier. It has a slightly shallower hex head and is 1-2 mm shorter, and I'm not convinced that this is a "stretch" difference in length. The original KAMAX bolt was evidently higher quality. Thanks to all for your advice.

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