Hydraulic TOB conversion
Thread Starter
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Hydraulic TOB conversion
What are you guys using for Hydraulic TOB on ZF6 these days?
Back in 2007 when I did my first ZF6 swap the Howe 82876 was a popular choice with a braided hose and conversion fitting.
In 2018 what are you guys using for Master cyl and hydraulic TOB for a ZF6 ?
I'm using a blue tag, so I know the collar is 1.311" vs the larger black tag (1.375")
I got the ZF6 out of another car as I'm swapping my 4L60E, and the hydraulics were junk and the dual mass flywheel has like 100k on it so I figure I'll just do another push style conversion since I need to buy all new stuff anyway.
Odd that a '92 had a blue tag..
-- Joe
Back in 2007 when I did my first ZF6 swap the Howe 82876 was a popular choice with a braided hose and conversion fitting.
In 2018 what are you guys using for Master cyl and hydraulic TOB for a ZF6 ?
I'm using a blue tag, so I know the collar is 1.311" vs the larger black tag (1.375")
I got the ZF6 out of another car as I'm swapping my 4L60E, and the hydraulics were junk and the dual mass flywheel has like 100k on it so I figure I'll just do another push style conversion since I need to buy all new stuff anyway.
Odd that a '92 had a blue tag..
-- Joe
Le Mans Master
Joined: Sep 2004
Posts: 6,019
Likes: 566
From: Conroe Texas
someone recently had a ram hydraulic bearing that they were selling here in the for sale section. he got it from summit and it was for a blue tag. back in the 90's i was using a mccloud twin disk clutch and their hydraulic bearing for a black tag zf.
Le Mans Master
Joined: Dec 2002
Posts: 5,270
Likes: 3
From: Seattle Area WA
I'm running the Howe with the stock master (86, not sure if zf masters have the same volume) with black tag zf6, but have to limit piston travel by a hair. I did this about 5 years ago, would be great to hear if there are newer (and oem) options out there- not that I've had a problem (but hardly drive it).
Last edited by USAsOnlyWay; Dec 1, 2018 at 12:03 AM.
Burning Brakes
Joined: Sep 2001
Posts: 1,013
Likes: 9
Thread Starter
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
I now have that New RAM hydraulic TOB listed in my car part out thread Part out thread w Blue Tag RAM TOB
-- Joe
Race Director
Joined: Sep 2001
Posts: 14,668
Likes: 749
From: NEwhere Ohio
What are the advantages to this?
i seem to remember the ultra tough mcleod dual disk is operated by a hydraulic throwout bearing
but what if just for single disk? Why use this?
just curious !
i seem to remember the ultra tough mcleod dual disk is operated by a hydraulic throwout bearing
but what if just for single disk? Why use this?
just curious !
Thread Starter
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
On the ZF6, I'd be able to use a standard single mass flywheel and sprung hub push style clutch.
-- Joe
Race Director
Joined: Sep 2001
Posts: 14,668
Likes: 749
From: NEwhere Ohio
Well, I've always converted my T5's to a hydraulic TOB. I can ditch the slave cyl, fork, geometry issues, and use aftermarket steel bell housings without worrying about exhaust issues with the fork.
On the ZF6, I'd be able to use a standard single mass flywheel and sprung hub push style clutch.
-- Joe
On the ZF6, I'd be able to use a standard single mass flywheel and sprung hub push style clutch.
-- Joe
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Thread Starter
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
I started swapping things around this weekend. removed the 4L60E, and started taking apart the Dana36. Gonna get the Dana44 in this week, and then start the trans swap.
I just wanna make sure I order the right hydraulic TOB. I guess I'm going to have to do some measuring and figure it out. I know the distance in the ZF6 bell is more shallow than a traditional bell housing, so I might need a bearing with a smaller installation distance.
-- Joe
Thread Starter
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
I'm running the Howe with the stock master (86, not sure if zf masters have the same volume) with black tag zf6, but have to limit piston travel by a hair. I did this about 5 years ago, would be great to hear if there are newer (and oem) options out there- not that I've had a problem (but hardly drive it).
Did you use any block spacers or anything ?
How did you limit the piston travel?
-- Joe