Single Mass Flywheel Conversion gurus
Thread Starter
Racer
Joined: Dec 2003
Posts: 345
Likes: 0
From: Rochester NH
Single Mass Flywheel Conversion gurus
I know this has been beat to death, but I can't find any answers.
Has anyone replaced their dual mass flywheel with a single mass flywheel and used the stock disc and PP? What was the noise level at idle with clutch out?
I bought a single mass from another forum member and a stage 2, Camaro strung clutch disc from SLP. My problem is that the disc is too large to fit inside the flywheel "pocket". My old disc fits with no issues.
Anyone else have this issue?
Also, it seems that my single mass is not as wide (thick) as the dual mass. Will using the ZR1 pivot stud rectify this?
Thanks as usual.
Has anyone replaced their dual mass flywheel with a single mass flywheel and used the stock disc and PP? What was the noise level at idle with clutch out?
I bought a single mass from another forum member and a stage 2, Camaro strung clutch disc from SLP. My problem is that the disc is too large to fit inside the flywheel "pocket". My old disc fits with no issues.
Anyone else have this issue?
Also, it seems that my single mass is not as wide (thick) as the dual mass. Will using the ZR1 pivot stud rectify this?
Thanks as usual.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
huh? That makes no sense.
When doing this conversion, the Camaro sprung hub is the one we use.
The old disk will fit... but I would never use it... the bite would be killer!!!!!!!! Nothing would be present to accept the drive line shocks. Damn... that would be interesting, but very touchy.
The SM is thinner... I wonder where that flywheel came from? Cause, again, we use the Fbody SMF on these conversions, with a corvette pressure plate. The SMF needs to be cut .090 to match the measurements of the DMF.
Also, make sure you "match balance" the SMF. Take it to a machine shop, where they can determine the amt of weight thats needed to keep them both on the same plane, so to speak. This way, you won't have any vibrations.
When doing this conversion, the Camaro sprung hub is the one we use.
The old disk will fit... but I would never use it... the bite would be killer!!!!!!!! Nothing would be present to accept the drive line shocks. Damn... that would be interesting, but very touchy.
The SM is thinner... I wonder where that flywheel came from? Cause, again, we use the Fbody SMF on these conversions, with a corvette pressure plate. The SMF needs to be cut .090 to match the measurements of the DMF.
Also, make sure you "match balance" the SMF. Take it to a machine shop, where they can determine the amt of weight thats needed to keep them both on the same plane, so to speak. This way, you won't have any vibrations.
Thread Starter
Racer
Joined: Dec 2003
Posts: 345
Likes: 0
From: Rochester NH
The SMF is at the machine shop being match balanced as we speak.
The center of the flywheel is 6" wide and the spring section of the clutch disc is 6 1/8" wide. I could have the center of the flywheel cut down, but I don't want to sacrifice strength.
The clutch disc is a stage 2 SLP disc. The flywheel is made by SSG Engineering. http://www.ssgperf.com/ (their webpage isn't very good).
I was going to use the stock PP and throwout.
The center of the flywheel is 6" wide and the spring section of the clutch disc is 6 1/8" wide. I could have the center of the flywheel cut down, but I don't want to sacrifice strength.
The clutch disc is a stage 2 SLP disc. The flywheel is made by SSG Engineering. http://www.ssgperf.com/ (their webpage isn't very good).
I was going to use the stock PP and throwout.
Drifting
Joined: Nov 2002
Posts: 1,365
Likes: 3
From: Huntsville AL
Is the flywheel a Fidanza aluminum unit, or are we talking about a steel F-body flywheel?
I have the Fidanza on my car, and yes the center section is thinner, but the outer portion is still the same thickness as the stock flywheel. That is, the clutch engagement point should be the same. The thinner center section will require that you buy shorter crank bolts, though.
Sounds like you have the wrong clutch disk.
I have the Fidanza on my car, and yes the center section is thinner, but the outer portion is still the same thickness as the stock flywheel. That is, the clutch engagement point should be the same. The thinner center section will require that you buy shorter crank bolts, though.
Sounds like you have the wrong clutch disk.
Thread Starter
Racer
Joined: Dec 2003
Posts: 345
Likes: 0
From: Rochester NH
I am sending the disc back to SLP. They said that I could have that problem.
So I guess I am in the market for a disc and PP. I have heard of RAM, Spec, Carolina Clutch and Centerforce.
Anyone know of any good deals for a new disc, PP and T/O bearing.
So I guess I am in the market for a disc and PP. I have heard of RAM, Spec, Carolina Clutch and Centerforce.
Anyone know of any good deals for a new disc, PP and T/O bearing.
Team Owner
Joined: Aug 2000
Posts: 42,935
Likes: 20
From: Sydney, Australia
CI 6-7-8-9-10 Veteran
St. Jude Donor '07-'08-'09-'10-'11-'12-'13-'14-'15-'16-‘17, '22
Originally Posted by Swirk
I know this has been beat to death, but I can't find any answers.
Has anyone replaced their dual mass flywheel with a single mass flywheel and used the stock disc and PP? What was the noise level at idle with clutch out?
Also, it seems that my single mass is not as wide (thick) as the dual mass. Will using the ZR1 pivot stud rectify this?
Thanks as usual.
Has anyone replaced their dual mass flywheel with a single mass flywheel and used the stock disc and PP? What was the noise level at idle with clutch out?
Also, it seems that my single mass is not as wide (thick) as the dual mass. Will using the ZR1 pivot stud rectify this?
Thanks as usual.
No issues with the stock pivot stud or clutch fork here. I did need different (shorter) flywheel bolts though.
Hope this helps.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Drifting
Joined: Aug 2000
Posts: 1,614
Likes: 0
From: Colleyville Texas
Your right this subject has been beat to death.
Recently changed out my Camaro, GM, flywheel, Mcleod Camaro disc, and Mcleod Corvette Pressure plate in my 396 LT1.
The new set up is a brand new GM Camaro flywheel and Mcleod's new stage 3 disc, Bronze Pucks/Ceramic, and Corvette PP. Did not turn the flywheel .090 to fit this time. Shop welded .130 on the PP throw out bearing to fit. Clutch really grabs and has less noise than previous set up and meets spec of the factory flywheel.
Recently changed out my Camaro, GM, flywheel, Mcleod Camaro disc, and Mcleod Corvette Pressure plate in my 396 LT1.
The new set up is a brand new GM Camaro flywheel and Mcleod's new stage 3 disc, Bronze Pucks/Ceramic, and Corvette PP. Did not turn the flywheel .090 to fit this time. Shop welded .130 on the PP throw out bearing to fit. Clutch really grabs and has less noise than previous set up and meets spec of the factory flywheel.
Advanced
Joined: Feb 2003
Posts: 78
Likes: 0
From: AUGUSTA GA
i just finished converting to a aluminum fidanza flywheel with a stage 2 kevlar sprung disk and new pressure plate. the noise at idle is mild no big deal just a slight rattle, however the gear noise at various rpms sounds terrible. it sounds like the tranny is about to tear to pieces. i have been told that different cars have different noise levels. my car just happens to be real noisy. its a lt4 car with 36000 miles. then my second problem is i did not have the flywheel balanced to the old dual mass so i have a pretty good vibration above 3000 rpm. the flywheel must come out to go get balanced so i am going to take the new clutch and aluminum flywheel (about 200 miles on the setup) out of the car and put the dual mass and oe clutch back in. i do not like the added noise that my car makes. anyone want a good deal on a very slightly used clutch and fidanza flywheel? make me an offer.
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Originally Posted by RichS
I'm using a Centerforce SM flywheel and Dual friction clutch kit. Working good so far 
Thread Starter
Racer
Joined: Dec 2003
Posts: 345
Likes: 0
From: Rochester NH
Thanks everyone.
I need to find a clutch disc with a center sprung section that measures less than 6" in diameter.
CYLT4, After you get that clutch out, measure the center section, ,if it is less than 6", I will make you an offer.
I need to find a clutch disc with a center sprung section that measures less than 6" in diameter.
CYLT4, After you get that clutch out, measure the center section, ,if it is less than 6", I will make you an offer.
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
I got this:
Part# 37-261871
McLeod Performance Clutch Disk, Shifts to 7500 RPM, 1993-1997 LT1 F-Body
$133.33
www.thunderracing.com
Part# 37-261871
McLeod Performance Clutch Disk, Shifts to 7500 RPM, 1993-1997 LT1 F-Body
$133.33
www.thunderracing.com
Instructor
Joined: Aug 2004
Posts: 104
Likes: 0
Just put the same Fidanza plus stage 2 in my LT4--Same problems--no big deal on noise at idle but loud gear clatter from 900 to 2000 and heavy vibration from 3000 up--also didn't match balance to original DM because supplier said I didn't need to--wrong! Ohter than that engages and runs ok.
