• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

Clutch Choices

Share this page

71tr

71tr

Jedi Warrior
Offline
Getting ready to change-out all clutch components on the '71 TR6 and am looking for comments from experienced users. There are inumerable articles about throw-out bearings and pressure plates all with their own take and recommendations. I want to know what you are actually using in your TR. Tell me your components and what your experience and thoughts are.

Pressure Plates: Laycock (original & aftermarket), Borg & Beck (original & aftermarket), Sachs (aftermarket).

Throw Out Bearings: R&H (original & aftermarket), Koyo (aftermarket), Gunst (aftermarket)
 
Sachs/Koyo, no problems. Would have gone with Gunst had it been on the market.

Bill
 
This may be a case of too much information but you might find it helpful.
To Laycock or not to Laycock??
Trials & Tribulations of TR6 Clutches
Brent Kiser
BSME, Purdue University, 1980
Page 1 of 15
June 2000
NOTE: This article can be found on the Minnesota Triumphs web page.
https://www.mntriumphs.org/
 
[ QUOTE ]
To Laycock or not to Laycock??
Trials & Tribulations of TR6 Clutches
Brent Kiser


[/ QUOTE ]

Dan,

Quoting Mr. Kiser; "By standing and bouncing on fingers of the Laycock, I could get them to move. But on the aftermarket Borg & Beck, even by jumping on the fingers, I could not get them to move. If I would have to guess, I think the Laycock clutch probably has a release force of about 225 to 250 pounds, where the aftermarket Borg & Beck is probably over 400 pounds."

I would be a bit suspect of anyone using such subjective and non-scientific testing methods. Pressure plates are designed to have an equal amount of force applied to all surfaces at once. Standing or jumping on the fingers does not accomplish this goal. Mr. Kiser also makes several statements as fact and later we find that they are his opinions. Take it with a grain of salt.

From everything I have read and heard, the biggest problem seems to be the interaction between the throw-out bearing carrier and the front shaft sleeve of the trans. Over the winter I have had the opportunity to work on three transmissions. All are 80,000+ mile cars. On two, the carrier was worn just enough that it would cock and catch on the sleeve. For some reason the third did not exhibit this trait. You would think that TR would have designed in some way to lubricate these surfaces during routine maintenance. Personally, I would replace the carrier and dress up the sleeve whenever replacing the clutch pieces.

There you go, another thought from yet another engineer. Put in a room and you will get five opinions!

Oh yeah, we will be trying TRF's magic clutch with the Koyo bearing in the wife's car.
 
Back
Top