The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-04-2020, 10:16 AM   #1
88Stanger
Registered User
 
88Stanger's Avatar
 
Join Date: Mar 2015
Location: Washington State
Posts: 1,644
Hydraulic Throw Out Bearing Install issue/Question

need some help here. I have a rebuilt 383 stoker with brand new 11" flywheel, im trying to install a hydraulic throw out bearing with a bran new McLeod 11" Street/pro clutch. I have installed the flywheel - no issue. Get the clutch disc in with alignment tool and install the actual clutch, tighten all the bolts down 1/4 turn until tight, then to 35lbs as directed in 3 equal torque settings. Then i install the brand new bell housing, no issue. After all this i go to measure the distance from several of the clutch teeth to the front top surface of the bell housing and i am getting some differences, up to .030. I plan to measure all of them tomorrow and see what all differences area. They say to have .100 to .150 total difference for the throwout bearing, but to what measurement? Average of all the fingers or ?? Is there possible differences to be expected in the teeth? Anyone have any experience with this?!?!
Thanks so much for all the help.
(Note: i did post this in my Build Thread, and i put it here for more exposure)
88Stanger is offline   Reply With Quote
Old 07-04-2020, 12:01 PM   #2
slepysal
Registered User
 
slepysal's Avatar
 
Join Date: Oct 2006
Location: San Jose NOR*CAL
Posts: 3,080
Re: Hydraulic Throw Out Bearing Install issue/Question

Maybe this will help
https://www.youtube.com/watch?v=P_R2hw2wkV8
__________________
1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes.

"Over, Around or through it... "
slepysal is offline   Reply With Quote
Old 07-06-2020, 04:42 PM   #3
88Stanger
Registered User
 
88Stanger's Avatar
 
Join Date: Mar 2015
Location: Washington State
Posts: 1,644
Re: Hydraulic Throw Out Bearing Install issue/Question

Update:
Well that was an interesting conversation with a Fred at Mcleod Clutches. He explains to me that they have a .050 variance allowed in the fingers when installed. What they do is install each clutch onto a test machine and operate the fingers a few times as this will allow the stress in the fingers to equalize themselves and then as long as they are with-in a .050" of each other, they are good.
He also explained that on a hydraulic clutch system the throw out bearing is always touching the fingers and that the .100" to .150" is to allow the piston to move back as the disc wears and the fingers move.
His suggestion is to just mount it, take the middle of the fingers number and set the clearance to .150, that should keep me in between the .100 to .150 or there about. He stated that getting it dead on at .100 or even .150 is almost impossible and the the extra clearance rings they send are .150 thick anyways.
Very interesting conversation with him. Nice guy, makes some really good points on how these none race applications are. The fingers being heat treated will have some slight differences but all in all should be fine.
My issue now is i got a clutch for up to 400HP and i think the 383 will be over that a bit, so i am now sending this one back and getting the step up clutch, which by the way is only the disc, yes that is it, same clutch pressure plate but different disc, up to 550HP. Yes getting the disc would be typically be best, but that disc alone is $220.00 and the the complete kit is only $300.00, so i figure hell, just get a complete new kit and return the other one. Be interesting to do the finger height test before mounting on new kit and see how it measures out.
88Stanger is offline   Reply With Quote
Old 07-12-2020, 12:10 PM   #4
88Stanger
Registered User
 
88Stanger's Avatar
 
Join Date: Mar 2015
Location: Washington State
Posts: 1,644
Re: Hydraulic Throw Out Bearing Install issue/Question

Well i ended up getting a note that the next up clutch kit would not ship until late this month, so i got this one, the next step up from that one or two up from previous.

McLeod Street Extreme Clutch Kits 75324

This one will hold up to 700HP.
88Stanger is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:46 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com