does a singlemass flywheel cause noises while driving?
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Race Director
Joined: Feb 1999
Posts: 12,772
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From: Indianapolis IN
Don't get me wrong, the ZF is a tight and strong tranny. If a person were to get the longer input shaft from the ZR1, you would have better clutch and hydraulic options.
The noise is what it is, but I am hoping to find someone with the TRANZILLA / T56 conversion, to find out if the T-zilla is quiet or noisy, it has 22 degree helix angle gears
http://www.rsgear.com/transzilla.asp
The noise is what it is, but I am hoping to find someone with the TRANZILLA / T56 conversion, to find out if the T-zilla is quiet or noisy, it has 22 degree helix angle gears
http://www.rsgear.com/transzilla.asp
Safety Car
Joined: May 2006
Posts: 4,290
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From: Salem NH
The big if is, if this kid buys my C4.. He was supposed to buy it last weekend, then this weekend. Last night he told me he needs a few more days.
He also said, he wants to have some local "Corvette expert" look at it. Corvette expert eh.. Sounds like a wax inspector.
-- Joe
He also said, he wants to have some local "Corvette expert" look at it. Corvette expert eh.. Sounds like a wax inspector.
-- Joe
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
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From: Los Angeles CA
I'm finally gettin use to the box of rocks, It'll cost too much in time and money to make it go away.
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
I purchased the vette on 5/24/2006, build it, and have put 1500 miles on it. Sad huh?
'67 firebird/camaro is attractive because of weight, and cost of parts/simplicity. Really easy to make a 10 second car.
-- Joe
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
Toy car. Truck is usually my daily driver, we also have an SUV.
I purchased the vette on 5/24/2006, build it, and have put 1500 miles on it. Sad huh?
'67 firebird/camaro is attractive because of weight, and cost of parts/simplicity. Really easy to make a 10 second car.
-- Joe
I purchased the vette on 5/24/2006, build it, and have put 1500 miles on it. Sad huh?
'67 firebird/camaro is attractive because of weight, and cost of parts/simplicity. Really easy to make a 10 second car.
-- Joe
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
-- Joe
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Thread Starter
Safety Car
Joined: Oct 2008
Posts: 4,022
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From: Los Angeles CA
[QUOTE=GREGGPENN;1569945455]Normal life expectancy of the DMF is 90-120k miles. ZFDoc's replacement unit has lasted twice that long.
QUOTE]
How could Zf docs unit last twice as long? He does not manufacture, possibly only retail distributes, what feedback was given about that unit?
QUOTE]
How could Zf docs unit last twice as long? He does not manufacture, possibly only retail distributes, what feedback was given about that unit?
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Bill had to put another DMF in his ZR1 several yrs ago. It's a standard Luk brand. According to him, it has lasted over 200k miles. And, he claims it still operates within tolerance.
Sorry about using the word "his". I didn't mean he made it.
Sorry about using the word "his". I didn't mean he made it.
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Wow...all the negativity on the single mass. Things go in cycles, I suppose.
I installed mine over 40,000 miles ago (OEM LT1 Camaro flywheel and sprung disk)...I have box of rocks at idle that goes completely away if you step on the clutch.
Cruise...nothing. I've got the original blue tag trans (115,000 miles) and GM847 cam making much surge below 2000 rpm.
This car is driven 300 plus miles a week as a daily driver...no complaints. No special oil, etc. Maybe the flywheels are just a bit too light?
I haven't heard of a ZF dual mass coming apart, but at 40 plus pounds @ 7200 rpm with no blowproof bellhousing...there is a safety issue in my application.
I deem it a great upgrade-cost or not.
I installed mine over 40,000 miles ago (OEM LT1 Camaro flywheel and sprung disk)...I have box of rocks at idle that goes completely away if you step on the clutch.
Cruise...nothing. I've got the original blue tag trans (115,000 miles) and GM847 cam making much surge below 2000 rpm.
This car is driven 300 plus miles a week as a daily driver...no complaints. No special oil, etc. Maybe the flywheels are just a bit too light?
I haven't heard of a ZF dual mass coming apart, but at 40 plus pounds @ 7200 rpm with no blowproof bellhousing...there is a safety issue in my application.
I deem it a great upgrade-cost or not.
Cruising
Joined: Nov 2007
Posts: 12
Likes: 0
How are you guys running sprung hub discs? Are you converting to a push type 4+3pressure plate and a hydraulic TOB? Or is it more simple than that?
They make mention in this thread:
http://forums.corvetteforum.com/c4-t...ce-needed.html
Of running this kit:
http://www.lmperformance.com/44265/24.html
with no mention of converting any of the hydraulics. That would definately be a very attractive option to me... once the current ZF clutch kit is ready to come out, just get this kit and reduce the noise from the trans.
They make mention in this thread:
http://forums.corvetteforum.com/c4-t...ce-needed.html
Of running this kit:
http://www.lmperformance.com/44265/24.html
with no mention of converting any of the hydraulics. That would definately be a very attractive option to me... once the current ZF clutch kit is ready to come out, just get this kit and reduce the noise from the trans.
Last edited by SickSpeedMonte; May 28, 2009 at 08:09 AM.
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
How are you guys running sprung hub discs? Are you converting to a push type 4+3pressure plate and a hydraulic TOB? Or is it more simple than that?
They make mention in this thread:
http://forums.corvetteforum.com/c4-t...ce-needed.html
Of running this kit:
http://www.lmperformance.com/44265/24.html
with no mention of converting any of the hydraulics. That would definately be a very attractive option to me... once the current ZF clutch kit is ready to come out, just get this kit and reduce the noise from the trans.
They make mention in this thread:
http://forums.corvetteforum.com/c4-t...ce-needed.html
Of running this kit:
http://www.lmperformance.com/44265/24.html
with no mention of converting any of the hydraulics. That would definately be a very attractive option to me... once the current ZF clutch kit is ready to come out, just get this kit and reduce the noise from the trans.
-- Joe
Cruising
Joined: Nov 2007
Posts: 12
Likes: 0
With the stock ZF pressure plate?
I honestly have no idea what flywheel I have...
But I know its a 2 piece rear main flywheel... and the LT1 Fbody one would have to be modified if it will work at all...
Are there any other flywheels that will work?
I honestly have no idea what flywheel I have...
But I know its a 2 piece rear main flywheel... and the LT1 Fbody one would have to be modified if it will work at all...
Are there any other flywheels that will work?
Last edited by SickSpeedMonte; May 28, 2009 at 09:05 AM.
Pro
Joined: May 2005
Posts: 525
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From: San Antonio TX
I also have a 2 piece rear main seal block I would like to drop into my 91 with black tag ZF6. I may go with a Single Mass Flywheel with a sprung hub if it helps with the noise and is not too much of a hassle. From what I’ve read, the Dual Mass won’t mate to the 2 piece main seal crank. I would assume neither would the FBody FW. I don’t know exactly why though. Is it because of the bolt pattern, flange shape or how its balanced? Maybe someone could chime in as to why…
I still have lots of questions about what other hassles I will have to go through to convert to a SMF. It’s too bad I can’t use the DMF on my 2 pc block because I would like to reuse the DMF and avoid the hassle and noise.
I still have lots of questions about what other hassles I will have to go through to convert to a SMF. It’s too bad I can’t use the DMF on my 2 pc block because I would like to reuse the DMF and avoid the hassle and noise.
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
You could also go with a push type clutch and a hydraulic TOB. LD85 ran a setup like that for a while.
-- Joe
