my 94 6spd
08-14-2012, 12:48 AM
#21
Racer
Very nice Vette and the 84 was very nice as well.
Always wanted a 944, but the maintenance cars seem like a little too much. How often are you supposed to change the Timing Belt and all of that? I've heard every 30 thousand or every few years? Sounds very pricey.
I also love the 928's as well, but again the maintenance seems like too much.
Always wanted a 944, but the maintenance cars seem like a little too much. How often are you supposed to change the Timing Belt and all of that? I've heard every 30 thousand or every few years? Sounds very pricey.
I also love the 928's as well, but again the maintenance seems like too much.
08-14-2012, 09:22 AM
#22
Le Mans Master
Thread Starter
the timing belt should be changed at 30K mile intervals. with that is the standard, water pump, balance shaft rollers, tensioner, and the timing and balance shaft belt. its costly. the maintenance is minimal once the car is driven regularly and is up to date on its service. the 944 handles well and accelerates well for only having 147hp. its built like a tank and onlookers seem to really like the car. i've had a few people ask me what it was and ask if they could look at it. to me its a pretty car. mine needs paint and torque tube bearings, as the transaxle is in the rear and is driven by a torque tube connected toa bellhousing on the engine. its basically the same setup as a C5.
the 928's usually require a lot of interior work more so than the 944. all dashes crack, like the 944. they share similar problem areas, but the 928 is more sensitive to running faults and can be far more expensive to maintain. again, a fine handling car, but more of a touring GT.
the 928's usually require a lot of interior work more so than the 944. all dashes crack, like the 944. they share similar problem areas, but the 928 is more sensitive to running faults and can be far more expensive to maintain. again, a fine handling car, but more of a touring GT.
08-16-2012, 02:34 PM
#26
Tech Contributor
Call Jim at Power Torque Systems. He should be able to set you up with OE clutch components. FWIW, the dual mass flywheel is long since unavailable. However in general, unless yours is leaking (there's "grease" between the two mass components) or horribly overheated from slipping the clutch, you should be able to clean it up with a red scotch brite pad. In the FSM you'll find the spec for testing it as well.
08-16-2012, 03:14 PM
#27
Melting Slicks
I am in the middle of a clutch replacement as well. 96GS#007 is correct in everything he stated. I am at 107k miles and I scuffed up the dual mass and am going to reuse it, it checks out per the specs in the manual and doesn't leak grease. If you want to go with an OE clutch definitely give Jim Jandik a call, or Carolina Clutch, they both have the OEM Valeo clutch in stock. I ordered mine through Carolina Clutch for $378 shipped, going to put it in on Saturday.
08-16-2012, 04:20 PM
#28
Tech Contributor
08-16-2012, 08:21 PM
#29
Melting Slicks
08-16-2012, 11:21 PM
#30
Le Mans Master
Thread Starter
i'll call Jim and see what he has in stock! i guess taking the flywheel to a shop to have it surfaced may be out of the question. lets hop the flywheel is not leaking grease as i want to stay all original.
08-17-2012, 12:16 PM
#31
Tech Contributor
Very few shops will resurface the dual mass. I've never understood why, since assuming they had a fixture to hold it, it's just skimming the surface to clean it up. Balancing would be a different matter altogether since the two pieces move independent of one another.
08-17-2012, 03:07 PM
#32
Le Mans Master
Thread Starter
i need to see this beast. i'm completely unfamiliar with the dual mass flywheel and if anyone has a pic of the dual mass flywheel itself, i'd love to see it!. i really do appreciate the advice on the clutch and appreciate the compliments on the car!
08-17-2012, 03:26 PM
#34
Le Mans Master
Thread Starter
thank you for the pic!!! what makes this flywheel special? i probably am asking a dumb question here, but i'm new to the dual mass setup. what did you use to surface your flywheel?? love the A-mold wheel son your 94! your car looks amazing!!
08-17-2012, 03:43 PM
#35
Melting Slicks
When the ZF was introduced in the Vette they were originally going to use a single mass flywheel. However, due to the thick cut gears of the ZF, the engine vibrations would cause "gear clatter" in the transmission. It is not in anyway harmful, just an annoyance they felt many prospective customers would not want to hear or deal with. There solution was to use a dual mass flywheel, which utilizes to two masses with an internal dampner composed of springs, grease, and a rubber seal to encapsulate them. Over time the heat from slipping and wearing of the clutch can rupture the seal which will spell disaster for the new clutch. However, if you catch it early enough, you should be able to salvage it. The 89-90(?) seals were more prone to rupturing than the LTx DMF's. Nothing too special about it, Ford uses them as well in the super duty's with the ZF's, Mercedes and BMW use them as well. There main duty is just to quiet the drive train. Replacing it with a SMF won't hurt anything, but will introduce gear rattle, and it is very noticable on a stock corvette with no exhaust modifications. From what I have heard the heavy billet steel SMF with extra mass from Spec keeps the ZF pretty quiet.
As for resurfacing, there are companies out there that can do it. I think the main thing they have to do for a DMF is use a special jig and fixtures, as well as it cut it down with stone. Usually when a SMF is resurfaced they use a chemical solution in the process, and if this is used on the DMF it will usually deteriorate the seal between the two masses. If you haven't, you should really pick up the factory service manual for your Vette. There are procedures in there to test the DMF. If it checks out, just use a maroon scotch brite pad to clean it up (can be found at autozone, advanced, oreilly, etc...) then slap that bad boy back in.
08-18-2012, 09:56 AM
#36
Le Mans Master
Thread Starter
that's exactly what i was looking for! here's crossing the fingers that my dual mass flywheel is in good shape. all i want is a nice feeling and sounding trans with a good clutch, lol. i don't want a replacement flywheel to be honest. the car is fast enough, so no performance goodies other than a set of muffler eliminators..and i'm not convinced that they would even add much if any power at all.
08-24-2012, 05:49 AM
#37
Le Mans Master
Thread Starter
not much of an update, but yesterday i was sitting between my cars in the garage having a dr. pepper when i remembered that when i had removed the coil and ignition module assembly a few days ago, i forgot to clean and install new thermal grease on the heat sync, icm, and coil mount:
so, i hopped up and removed the coil and ignition module assembly and cleaned each part carefully by hand and reapplied the proper GM thermal grease:
so, i hopped up and removed the coil and ignition module assembly and cleaned each part carefully by hand and reapplied the proper GM thermal grease:
08-29-2012, 05:48 AM
#38
Le Mans Master
Thread Starter
washed the car yesterday and took this pic at random:
managed to get the under hood lights working. both connectors were unplugged:
took this picture of the interior. the red seemed ultra bright yesterday for some reason:
managed to get the under hood lights working. both connectors were unplugged:
took this picture of the interior. the red seemed ultra bright yesterday for some reason:
08-29-2012, 09:13 PM
#39
Instructor
Member Since: Aug 2012
Location: Red Bank NJ
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The car is looking good! I like the 944 as well. We must have similar taste in cars as we have the same color combo Vette and a 944, but not the same color combo on that one.
