C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

clutch problems

Thread Tools
 
Search this Thread
 
Old Jul 28, 2021 | 07:17 PM
  #1  
bud40oz's Avatar
bud40oz
Thread Starter
Racer
 
Joined: Feb 2019
Posts: 397
Likes: 29
From: Jackson, mi
Default clutch problems

okay i am at my wits ends here and completely frustrated, i have replaced my entire clutch system with new master and slave cylinders and the dual mass conversion clutch from ecklers, i know it isn't the best choice, i'm certain of that but, i cannot get it to bleed for the life of me and i just don't see how there can be any air left in the system. when the cart is sitting there jacked up on 4 jack stands not running... i should be able to press the clutch pedal and have the rear tires spin while it is in gear, correct? or does it need to be running. i have tried reverse bleed with a home made garden sparyer thing i rigged up like a pheonix bleeder and got quite a bit of air out that way. i have pumped and pumped and pumped the pedal with bleeder tight cap off. cap on.. i have removed the slave cylinder and pushed the rod all the way in i have done everything i can think of and everything i have read that works. i just don't know what i am doing wrong here. aside from possibly just bad new parts or wrong parts in right box. if i pull the slave cylinder off the pedal is rock hard and you have to hold it with extreme pressure to make the pedal go down, but i did sit there for 7-8 minutes forcing that pedal until it went to the floor but it was hard.
any thoughts or suggestions will be really appreciated for sure..

one thing in my mind here is.. when i put the clutch and pressure plate on it said tighten pressure plate bolts to 35 pounds of torque so i did, against my gut feeling. but is that whats wrong here?

Last edited by bud40oz; Jul 28, 2021 at 07:49 PM.
Reply
Old Jul 29, 2021 | 08:19 AM
  #2  
C409's Avatar
C409
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2005
Posts: 6,475
Likes: 564
From: Clearwater Florida
Default

..... Put it on the ground and drive it ... are you thinking that you over or under torqued the pressure plate bolts ? exactly how would the pressure plate bolt torque have ANY affect on bleeding or actuating the clutch ? .....
Reply
Old Jul 29, 2021 | 12:18 PM
  #3  
bud40oz's Avatar
bud40oz
Thread Starter
Racer
 
Joined: Feb 2019
Posts: 397
Likes: 29
From: Jackson, mi
Default

i don't know, just reaching for answers i guess at this point. the tires will not free spin while i have it in first gear and push the clutch pedal down, that is telling me the clutch is not releasing, right?
Reply
Old Jul 29, 2021 | 05:44 PM
  #4  
bud40oz's Avatar
bud40oz
Thread Starter
Racer
 
Joined: Feb 2019
Posts: 397
Likes: 29
From: Jackson, mi
Default

okay so, i just went out and put it in 6'th gear instead of 1'st tires still didn't want to move very well but i kept pulling. all the sudden i heard some tingy noises down there and it started spinning easier, maybe some of the fingers were not quite lined up good or who knows but it is working now in all gears i can go from locked up tires with no clutch pedal to spinning when clutch is pushed. only thing is now i have lost a little pedal so maybe it will self bleed from there like it is supposed to do. thank you c409 for making me try harder. and fyi for anyone in the future who has problems bleeding the rotten sob's... you can absolutely make a home made pheonix style reverse bleeder out of a 10 dollar garden pump sprayer, just you tube it. did it alone with no helpers even. i think i am finally on the way to putting it all together and hearing this motor run after a year and a half of covid BS of no parts to buy and everything just crappy rotten


cars new name is officially NIGHTMARE

Last edited by bud40oz; Jul 29, 2021 at 05:48 PM.
Reply
Old Jul 29, 2021 | 06:01 PM
  #5  
bud40oz's Avatar
bud40oz
Thread Starter
Racer
 
Joined: Feb 2019
Posts: 397
Likes: 29
From: Jackson, mi
Default

just basically a backyard polished crank, rering refurbished everything i could because there was nothing to buy due to covid while i was doing. lunati .515/.530 voodoo cam lunati full roller rockers, dart 180 cc shp gasket match ported intake and exhaust sides, with matching dart stud girdle... hookers 1 3/4 tube header with pypes race pro exhaust with x pipe. edelbrock performer rpm air gap intake with holley 750 ultra double pumper. stock mahle piston stock hand polished crank stock oil pump with high pressure spring installed new rings/rods and cam bearings...pro form electric water pump, ac , air pump and all idler/ tensioner pully deleted all done by me no outside sourcing what so ever. i did ever bit of work to engine myself. have a afr gauge i will be using to tune with and mount that on the pillar post so i can see it at wot. it should run good. 6 speed with dana 44 and 3.42 ratio. and for those of you saying wtf CARB...??? the car was already on fire and melted the original fuel injection before it was mine due to a leaky o ring at the injectors. the guy i bought it from had it completely hacked up. and beside i LOVE the sound of a good carb hitting hard

Last edited by bud40oz; Jul 29, 2021 at 06:04 PM.
Reply
Old Jul 29, 2021 | 10:58 PM
  #6  
postcar's Avatar
postcar
Advanced
 
Joined: May 2012
Posts: 76
Likes: 8
Default

a new clutch disc still has high and low spots on it until run in with engine turning to smooth out the first time. a several thousands outta flat will prevent you from turning wheels by hand. when a clutch is fully depressed there is approx 010 clearance between flywheel and disc...Start car in neutral and gently try to put car in gear if grinds then for some reason pressure plate is not being depressed enough to allow clearance of 010........Years ago I drilled a hole in the bottom of my Lakewood bellhousing directly below disc and flywheel while a friend stepped on clutch pedal while i checked with a feeler gauge to see i had at least 010 clearance.... anything less than 010 is un acceptable, look for missed shifts and car wanting to creep on you even with pedal fully depressed....... good luck my friend
Reply
Old Jul 30, 2021 | 08:10 AM
  #7  
C409's Avatar
C409
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2005
Posts: 6,475
Likes: 564
From: Clearwater Florida
Default

Originally Posted by bud40oz
i don't know, just reaching for answers i guess at this point. the tires will not free spin while i have it in first gear and push the clutch pedal down, that is telling me the clutch is not releasing, right?
..... New clutch discs are not necessarily perfectly flat ... it sometimes takes a bit of run-in to smooth them out .....
Reply

Get notified of new replies

To clutch problems





All times are GMT -4. The time now is 11:35 AM.

story-0
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-1
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-2
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-3
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-4
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-5
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-6
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-7
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-8
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-9
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE