Clutch replacement questions

[LGAFF]

-Are Luk clutches any good?
-What is the weight of the dual mass flywheel?

[IowaZR-1]

There's a used one for sale on fleabay it says 36 lbs.

http://cgi.ebay.com/ebaymotors/1990-1995-CORVETTE-ZR-1-LT-5-Dual-Mass-Flywheel-OEM-GM_W0QQcmdZViewItemQQ_trkparmsZ65Q3a12Q7c66Q3a2Q7c 39Q3a1Q7c72Q3a317Q7c240Q3a1318Q7c301Q3a0Q7c293Q3a3 Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem3c a3328618QQitemZ260436035096QQptZMotorsQ5fCarQ5fTru ckQ5fPartsQ5fAccessories

[WB9MCW]

The dual mass flywheel is heavy and slow to rev --- very popular mod is to go with a Fidanza and a ceramic clutch up grade -- Many of us use Carolina Clutch for the supplier --great guys there IMO

Following are comments and threads on it all from prior posts
===========================================


You can go race with a ceramic like I did with a Carolina setup. If you are interested in the race setup just email the boyz at Carolina and they will get you all set up with a turn key package like they did me. My clutch was shot and I wanted a performance one so I went ceramic and with a Fidanza Alum flywheel I like it very aggressive however -- super tight grip action! But get ready for the dreaded syncro's gear rattle ---

I went stage 3 for my 92 Z

http://www.carolinaclutch.com/showitem/108823.aspx

http://www.carolinaclutch.com/ListItems/SubCategory/Flywheel/Fidanza%20Light%20Weight%20Aluminum%20Flywheel.asp x

[WB9MCW]

the conversion does result in a very noisy gear rattle sound...at idle(unless clutch pushed in) it is almost embarrassing..when lugging the engine(low rpms,,,ie around corners slow traffic areas ect.) and when starting off in 1st and in 2nd gear just for a bit after the gear shift....that being said I still dont mind since I did a ceramic clutch upgrade...and I can rev higher/faster do to lower mass and dump the clutch at 3500 vs stock 2500rpm dumps...the resulting burnout is unbelivable...(did a custom chip as well..with fans going on at 190f vs the stupid 230f stock)...she burns rubber all the way through 1st...squacks into second and chirps into third....never did she do that b4 that is for sure!!!! I love the performance enhancemant...but I have to say the gear rattle...more of a rut....rut...rut...rut...sound is very annoying to say the least(the rattle is the gears and syncros in the zf truck tranny...now that u dont have a balanced dual mass flywheel) the good news is that dm flywheels do go out and are big $$$(although some bargins on used and rebuildt ones do exist)so doing the conversion does put the stock one on the shelf for the next owner if they ever wanted to go back to the quiet stock arrangement.. All said I love the performance enhancement but hate the noise...typical of life always a tradeoff...My best friend and my pro mechanic and a c5 owner (Big Mike) said no way he could live with it if it were his vette...but then again he would get a lot of static from others(being a shop owner..repair shop)...and everyone would bug him on it... It sounds like a pilot bearing gone bad...and gearheads can't help but notice and comment...LOL so if u can take the ribbing..and have a strong ego(like me)(dont give a crap about what others think..just care abt what I like) then go for it...if u worry abt what others will say or think and give u a hard time abt it..then stay stock...cause belive me they will look, gawk, talk,question, and comment how they could never tolerate this bloody noise then stay with ur stock balanced dual mass flywheel...but if u want a quick revving,,bad-***,,hard pounding gear shifting,,,rubber squeeling ZR-1 then go for it!!! Just IMO but I'll take the Hi-Po ceramic clutch and noisy rut,rut,rut anyday!!!!

[WB9MCW]

Full Thread on the rattle

http://zr1netregistry.com/forum/showthread.php?t=169&highlight=tranny+gear+rattle

[WB9MCW]

A poll Zfactor did on the aftermarket flywheels

http://zr1netregistry.com/forum/showthread.php?t=1149&highlight=tranny+gear+rattle

[WB9MCW]

When the Dual Mass goes bad thread

http://zr1netregistry.com/forum/showthread.php?t=2793&highlight=tranny+gear+rattle

There ya go buddy LG all you ever wanted to know abt it all!!!


BTW Carolina sell LUK because my ceramic clutch from them came in a LUK box and it now is the keeper of my DM factory clutch sitting on my shelf in the garage.

[Kb7tif]

I just put the fidanza in my 92. I get almost no noise at idle, but some at LOW throttle takeoff. Its embarrassing when someone else is in the car. But im keeping it. Stock clutch/plate. Easy Mod.
Car revs like never before.
Have Headers ready to put in, waiting until sept/oct, also will do a topend port at that time.:cheers:

[Ccmano]

I believe LUK was the orignal equipment supplier and still supplies to GM and many others. It's a German company with manufacturing plants all over the world. Quality stuff.
H
:cheers:

[rhipsher]

I went with the Fidanza flywheel and Centerforce sprung hub disk and the stock preasure plate. It works awsome. I have very little noise from it but it does make a little rattle only in nuetral. Some will be louder than others. But you will notice a difference in how the rpm's wrap up faster than with the duel mass.

[LGAFF]

The car is 16.5" off the ground(rocker cover to gorund).....is that high enough to do the work?


Also found out my knock sensor is off, that might be my performance issue at the track.

[WB9MCW]

Photos of doing the tranny pull >>> http://www.corvetteactioncenter.com/forums/zr-1-general-technical-discussion/105146-here-pictures-clutch-job.html

MORE ON TRANNY PULL >> http://www.zfdoc.com/transmission.htm


FOR MY MEGA LINK AND THREAD LIST FOR CORVZ061 (MY BUDDY) FOR ZR-1 MODS AND THINGS TO DO
SEE >>> http://zr1netregistry.com/forum/showpost.php?p=50466&postcount=3

[Kb7tif]

While your trans is out pop in a new main seal 6$ (driveshaft). Do yourself a favor drain the transmission fluid first.:mrgreen:

[rhipsher]

Photos of doing the tranny pull >>> http://www.corvetteactioncenter.com/...lutch-job.html

Gee! That looks familliar. Hehehehehe!

[diamond zr1]

16/1/2 inches,on the floor I could not slide under that/get a lift;;;;

[Hammer]

Change the driveshaft u-joints too. Spicer non-greasable if you are racing.

[LGAFF]

16/1/2 inches,on the floor I could not slide under that/get a lift;;;;


I have the same problem, di#k gets in the way:mrgreen:

Trust me if I can get under there at 260lbs.....so can you

[LGAFF]

Since I went with a Mcleod single disk, can I then use a sprung hub out of a 1996 Camaro Z28?

[-=Jeff=-]

Since I went with a Mcleod single disk, can I then use a sprung hub out of a 1996 Camaro Z28?

um, the disc will have the sprung hub..

but if you use a ZR-1 pressure plate and Throw out bearing, then yes you can use the Camaro sprung hub disc

[rhipsher]

Lee the Mcleod disc should have the springs already in it. This is a CenterForce but It should look something like this. Unless you meant your aluminum flywheel.
http://i301.photobucket.com/albums/nn63/keeno1970/Flywheel005.jpg

[LGAFF]

I typo'd I meant Mcleod Flywheel......can I use the Camaro clutch set up with the Mcleod Flywheel?

[-=Jeff=-]

I typo'd I meant Mcleod Flywheel......can I use the Camaro clutch set up with the Mcleod Flywheel?

no
you can use a camaro Disc, but you need the Corvette Pressure plate and throw-out bearing

[rhipsher]

Lee you can use a camaro disk with the ZR-1 clutch/preasure plate and new flywheel but you can't swap a camaro clutch in place of the stock clutch. There will be issues. And I know you don't want issues. So just use a camaro disk or an aftermarket one and your good to go.

[LGAFF]

Well, I found 12mm 1.75 studs at ACE for $2.40 a piece, the trans is lined up on the studs, but still having a hell of a time getting it in the pilot bearing, only about an inch to get the trans flush with the bell housing.

Cannot wait to get the damn thing done.

[Kb7tif]

Well, I found 12mm 1.75 studs at ACE for $2.40 a piece, the trans is lined up on the studs, but still having a hell of a time getting it in the pilot bearing, only about an inch to get the trans flush with the bell housing.

Cannot wait to get the damn thing done.

Hey there. since there in only about an in to go can you maybe start a couple of bellhousing screws and bring the trans in that way, how i did mine, it didnt go so i was going to backed the trans out slid it forward again went right in.
Good luck.

[LGAFF]

The boitch will just not go in, raised the trans, lowered it rocked it back and forth......any ideas?

[-=Jeff=-]

The boitch will just not go it, raised the trans, lowered it rocked it back and forth......any ideas?

you try doing it with the lights out??

:sign10: :sign10:

[WB9MCW]

TIME FOR THE MURPHY HAMMER

[LGAFF]

Not helping Jeffery .....not helping:mad:


PS: please also refrain from the "put some fur around it" comment

[QB93Z]

I had the same problem.

Fill the clutch resovoir and operate the clutch a few times. This will require getting the air out of the lines. Leave the clutch resovoir cap and bellows off while you pump the clutch pedal. After you cycle the clutch a few times the transmission will slide in.

Good Luck!

Jim

[LGAFF]

Should I be able to spin the output shaft still with the trans so close to the bell housing? I would be afraid if I cycle the clutch fork that it might cause the clutch disk to shift?


Thanks.....see Jeff how nice Jim is, maybe a lesson to be learned!

No Cam Emblems for You! Come back 1 year!

[XfireZ51]

Jim is correct. Shouldn't be an issue. The input shaft should be thru the clutch disc at this point meaning that the splines are set. May want to try tipping trans slightly downward. Don't forget that motor may be tilting back a bit.

[LGAFF]

The input shaft should be thru the clutch disc at this point meaning that the splines are set.


Thats what I thought, but I was surprised I can now turn the output shaft, when I could not the other day. PITA

[XfireZ51]

Thats what I thought, but I was surprised I can now turn the output shaft, when I could not the other day. PITA

Is the trans in neutral or in gear?

[LGAFF]

Was in gear, but maybe with all the bumping I knocked it out...I will have to check

[Toyvet1]

Want to know a way to trash the pilot bushing. Force the trans in ! Ask me how I know.

If you are lucky enough to have someone work the clutch while you guide the trans in. Pumping the clutch will work also. Help to make sure the trans is in gear.

As for Jeffs helpful hints , remember he spends alot of lonely night in the garage alone....

[LGAFF]

Hope to jesus I have not knocked any needle bearings out

[A26B]

Lee,
Just a couple of basics that can cause issues similar to those you are experiencing.

1. Throwout bearing. Did you slide it onto the input shaft housing while the trans was out to make sure it went on OK? There are 2 different sizes of input shaft housings. The throwout bearing for the small size will not go on the large one. Makes installing the trans a real bitch I would imagine.

2. Clutch alignment. Did you use an alignment tool to align with the pilot bearing while cross tightening the pressure plate? If properly aligned, a little wiggle on the tail end while on the alignment studs, some forward pressure & it should slide right in. If you doubt the alignment is still good, back the trans out & check it with the tool again. Can do this with the bellhousing in place.

3. DO NOT try to pull the trans into the bellhousing with bellhousing bolts. If it doesn't go easily, something is not right.

4. If the trans is in gear, you should not be able to turn the output shaft if the splines are in the clutch disc.

5. Before installing clutch, always a good idea to slide the new disc onto the input shaft to insure it slides freely.

[Toyvet1]

Well it wouldnt hurt to pull the trans out and check the needles .

Reinstall the alinement tool and check the clutch alinement. Lee what are you using for a tool. I have a old input shaft that I have much better luck with if you interested

[LGAFF]

-Did not force the trans on with bolts
-An allignment tool came with the kit, so good there
-Looks like I did knock the shifter into neutral when I was restrapping the trans to the jack.
-The shaft is going into the throwout, so should be good

-Will try pumping the clutch tomorrow.


Thanks for all the help, so many things that are not mentioned when people discuss, great learning experience.

[-=Jeff=-]

Not helping Jeffery .....not helping:mad:


PS: please also refrain from the "put some fur around it" comment


Yes, I refrained originally or it would have been in my other post

yes there are some great ideas and suggestions.. good luck..

I remember my 89 being a bitch to do once or twice..

Good luck!!

[LGAFF]

http://www.youtube.com/watch?v=4t52WC7Gwt0

[XfireZ51]

http://www.youtube.com/watch?v=4t52WC7Gwt0

An epic struggle finally at an end. Let's hope everything is torqued properly like the pressure plate bolts and flywheel to crankshaft.

=D>=D>=D> :worship::worship::worship:

[LGAFF]

Everything is finger tight....I don't want it binding up:thumbsup:

[LGAFF]

Jim, Thanks for the tip worked like a charm!

[LGAFF]

The car is back in the ground and I started it up, no issues at idle...an no rattle from the flywheel. Tomorrow interior goes back in and the first test drive with the new clutch/flywheel.

[-=Jeff=-]

very cool!!

[LGAFF]

Trip around the block and no issues!

[WB9MCW]

CONGRATS == Closure to a very long post!

Lucky u for no dreaded rattle -- u will have to hear mine someday.

[LGAFF]

Bryan,

I have come to believe that much like the Lochness monster, sasquatch, the Chupacabra, and Greek guys name Pete with a big crank.....you are but a fictional character that does not exist. I have roamed the streets of Crystal Lake, IL searching for the elusive Bryan, known to the locals as the Crotchless Monster, Sascrotch, or the Chupherbraoff.

Seriously Bryan you need to show up for a pizza night!

:cheers:

[WB9MCW]

http://zr1netregistry.com/forum/showthread.php?t=3571

http://zr1netregistry.com/forum/showthread.php?t=5009


Every now and then I do show up -- Esp if I was the one to call the event!

BTW that PETE guy with the big crank and I have been friends for 19 years FYI
Pete has had an open invite to ride on Bad Attitude for 8 years now -- ask him -- he never finds the time to go!!!

I spend a lot of time with the boats esp being I live on the river and my bad azz motor is in my boat

http://i126.photobucket.com/albums/p110/HAMMERHATE/502blowermotor.jpg

The blown 502 cost me more than I spent on my entire ZR-1.

http://i126.photobucket.com/albums/p110/HAMMERHATE/IMCOX-treamSCDrive.jpg

You do not want to even know what this drive sells for -- u would think I was crazy to spend this kind of $$$ on a boat.

http://i126.photobucket.com/albums/p110/HAMMERHATE/BAD-ATTITUDE-EH-PIERmontage.jpg

3000 hp coming down the river -- we attract a lot of attention

http://i126.photobucket.com/albums/p110/HAMMERHATE/BADATTITUDEANDBLACKLIGHTNING.jpg

the river pier

http://i126.photobucket.com/albums/p110/HAMMERHATE/5.jpg

the river cottage

http://i126.photobucket.com/albums/p110/HAMMERHATE/6.jpg

[WB9MCW]

http://i126.photobucket.com/albums/p110/HAMMERHATE/BADATTITUDEANDBLACKLIGHTNING.jpg

My best friend Mike and his triple blower motor 42' Fountain - Over 3000 HP coming down the river between us

http://i126.photobucket.com/albums/p110/HAMMERHATE/THE-42-FOUNTAINmontage-1.jpg

Mike's new Raceboat -- He is on hiz way to the Shooter Shootout at LOTO right now -- I did not go this year!

LOTO SHOOTOUT DETAILS >>> http://www.lakeoftheozarksshootout.org/

http://i126.photobucket.com/albums/p110/HAMMERHATE/42raceboat-1.jpg

http://i126.photobucket.com/albums/p110/HAMMERHATE/M8.jpg

So now you know what I am up to and why I do not make the ZR-1 circuit so much -- Just a buzy guy with the boating biz.

I DO EXIST -- TRUST ME ON THAT ONE -- REGGIE FOUNTAIN WILL CONFIRM THAT

http://i126.photobucket.com/albums/p110/HAMMERHATE/BIG-B-WITH-REGGIE-F-AND-MR.jpg

NOW U KNOW WHY ALL MY FRIENDS CALL ME "BIG b"

http://i126.photobucket.com/albums/p110/HAMMERHATE/BRYANwiththeMassiveLadies.jpg

TRIPLE MOTOR FOUNTAIN FLY BY VIDEO >>> http://www.youtube.com/watch?v=2xVQLRqnDrY
http://www.youtube.com/watch?v=exnr2DzgaFk

MIKE'S OLD 36' RACE BOAT VID >>> http://www.youtube.com/watch?v=0oCrs9SAn-g
http://www.youtube.com/watch?v=Ta4DixbQJXM
http://www.youtube.com/watch?v=qtddCIAi7Wc

MIKE'S NEW BOAT WHEN REGGIE DROVE IT TO THE STILL STANDING WORLD RECORD
>> http://www.youtube.com/watch?v=SD2CND0KAA4

MIKE HOPES TO BREAK THE RECORD SOMEDAY SOON

ANOTHER BUDDY OF MINE "BRAD ZASTROW" AND HIZ MTI VIDS
>> http://www.youtube.com/watch?v=K_tNdP3h6Yo
http://www.youtube.com/watch?v=fbgQNtP_f-Q

THESE ARE THE BUDDIES I HANG OUT WITH AND LIVE THE NEED FOR SPEED WITH

I STILL LUV ALL YOU ZRONEERS AS WELL -- JUST ONLY HAVE SO MUCH TIME IN LIFE TO BE IN THE FAST LANE!!!

THAT IS MY LONG STORY AND I AM STICKING TO IT --- LOL

[LGAFF]

Just giving you a hard time, yes Pete has mentioned he knows you from way back. Thats a big damn boat, where do you dock it? We do soemtimes all meet at Texan BBQ right off the river. Would be glad to have you come over!:cheers:

[rhipsher]

Man if I got invited to go on a boat like that I be there in a New York minute. Much better than the last boat I went water skiing in. A 1979 20' Sea Ray with a 277 mercruser. Faded yellow. God that thing was ugly. When you pulled into a cove that was filled with Baja's and Sonics and Scarabbs full of chicks in bikinis it was embarrassing. But it was either that or be standing on the shore on no boat at all.

[WB9MCW]

http://i126.photobucket.com/albums/p110/HAMMERHATE/WB9MCWQTHGOOGLEVIEW.jpg

I live on the Fox River between McHenry and Johnsburg.

http://i126.photobucket.com/albums/p110/HAMMERHATE/scarabthong400x300p.jpg

Da wife's new Custom Scarab Thong.

I have a bridge for sale in the swamps of Florida too if you believe me on the last photo.

[Pete]

What's up Bryan.

Man you will have to join us for pizza n drinks we have a dreat bunch.

You have to meet these guys to understand.

About that boat ride one day i will take you up on it,just life has been keeping me busy.:thumbsup:

Lee,set up another Texan BBQ.

Pete