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J Type Quick Engagement

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PompousUsername Avatar
PompousUsername Silver Member William Culshaw
Edmonton Area, AB, Canada   CAN
1973 MG MGB "Nigel"
1973 Triumph TR6
Many of the triumph vendors who work on gearboxes offer a service to quicken the engagement of J type overdrives. On the internet there is no information on how it is done, just that it can be.

Does anyone here know about the modification and how it works?



Tennis is my racquet...

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TR3driver Randall Y
Confusion, Los Angeles, USA   USA
The 3 mods I know of are to open up one of the passages through the body;
shim the annulus to minimize travel of the clutch ring;
and ensure the lining (and carrier) run perfectly true.

I've not tried these myself, but I believe they can provide only incremental improvement. You'll never get it to shift as fast as an A-type.



Randall
56 TR3 TS13571L daily driver
71 Stag LE1473L awaiting engine rebuild
7? Stag awaiting gearbox rebuild

Darth V8R Avatar
Darth V8R Vance Navarrette
Beaverton, Oregon, USA   USA
1980 Triumph TR8 "Wedgie"
In reply to # 1497843 by PompousUsername Many of the triumph vendors who work on gearboxes offer a service to quicken the engagement of J type overdrives. On the internet there is no information on how it is done, just that it can be.

Does anyone here know about the modification and how it works?

If the clutch is worn, it can take longer for the OD to engage. I installed my OD myself, using a Volvo 240 Laycock J type. As it turned out, the clutch was worn out, and it would slip. I sent the clutch to John Esposito who refurbed it for me. No more slippage.

The clutch friction material is 0.100" thick when new, and is totally worn out and slipping at 0.040".

Vance



1980 Platinum Metallic TR8, navy blue interior
Bare metal respray, Crower cam, raised compression
ported heads, modified Zenith carbs, 0.060" overbore

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