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Engine, Transmission including Annular release

Engine, Transmission including Annular release

Annular release bearing kit

Pierre has fitted our annular release bearing kit and tells us his experiences so far: -

It is well known that the clutch control of the TR5 / 6 has become an Achilles heal. Indeed, it has remained broadly the same since the old TR's, but the torque to be transmitted has increased and therefore the efforts on the control system have reached its limit.

 

The annular clutch release kit as proposed by RevingtonTR, i.e. RTR1009-1K completely resets it. https://www.revingtontr.com/engine-transmission/flywheels-clutches/clutch-release-mechanisms/annular-release-kit. The hydraulic bearing acts directly on the diaphragm, so there is no longer any binding, nor any play, nor weak point in the system.

The kit is really simple and easy to install, (just respect the instructions) but it is important to check the distance between bearing and diaphragm. For me, it was right at the first time with the original Laycock clutch cover. I used a 0.625 master cylinder from the Triumph Spitfire (GMC205) without a pedal stop. You just have to match the diameter of the pipes, which are different when using this cylinder, but is not really a problem. The master cylinder control rod of the Spitfire. must be adjusted in length, or replaced by the original rod of TR5, nothing could be simpler.

The purge is done by itself by simple gravity, without even having to "pump"!!

In use, it is a real pleasure, the clutch pedal is very soft, very precise, without any hard point. It is also clear that the gear change is faster, because the control is really very direct. So I can highly recommend it if you have to work on your clutch, it totally changes the driving.

Only question mark, it is to be hoped that the hydraulic seals have a good life expectancy, because the removal of the gearbox will be necessary in the event of a leak.........

Thanks Pierre, We hope the seals are up to the job, we have been fitting these kits for 30 years in various guises with no seal leakages with the present version. Neil Revington. 
 

Engine Sump

Pierre has modified his sump and explains what he has done: - 
To stiffen the lower engine and improve oil cooling, a thick aluminum ribbed crankcase is interesting. The available model is intended for the track and has a larger oil capacity. But it protrudes too much under the chassis for road use. The solution, two strokes of the milling machine to remove a slice, a weld inside, a weld outside. Do not forget a magnetic plug and the oil temperature sensor.

 Gearbox

 I installed a CC series gearbox (later TR6) which was on my shelves. The gears ratio of the CC to the CD is better, as the 1st is 2.99 vs 3.14 and the 2nd & 3rd shorter. The other advantage is that originally; the bronze bushings were replaced by steel bushings.

Overdrive

My choice was for a type A overdrive (22%) on 2, 3, 4, this gives almost perfect staging.

KPH vs RPM with 3,7 axle ratio

Normally only the J type (25%) was fitted with the CC gearbox of TR6 and was only functional on 3 & 4 and therefore had a specific secondary shaft that does not match with the A. So I kept an old big nose imperial TR4 secondary shaft, but it is necessary to drill it to put the ball that blocks the washer on the CC box. You have to pierce the nitride layer, it's quite hard, but manageable.

 

 

 

 

 

 

 

"Big Nose" shaft drilled for the ball which prevents the stop washer from turning on CC G.B.

Logic Overdrive device

In the 1970s, I made an electric flip/flop overdrive control with a cascade of relays that did work quite good. At this time of the rallies with the Dolomite Sprint, I had put a very long control rod. With the bumps of the road, the inertia made the rod move and the overdrive engaged or disengaged by itself and the pilot went crazy!

Now Neil markets the same functionalities with a full electronic small box. He calls it "logic overdrive."

So I succumbed to modernism and I installed Neil's box. It works well, no problem. (but I put a shorter control rod (40 mm) on the fascia just in front of gearbox lever !!) (RTR comment Parts are listed below)

Rear Axle and Drive shafts

The original ratio of the rear axle (3.45) is irrelevant here where the speed is limited to 110 KMH on pseudo highways and there are a lot of mountain roads. I tried a 4.1 and finally went for a 3.7 which is a good compromise with 185/70 x 15 tires on 5.5 x15 72 spokes wheels

 

 

 

 

 

 

 

 

 

Constant velocity (CV) joints have been proven for a long time so this was my option which also allows better AR hub bearings to be fitted. (RTR comment, A word of caution. Pierre is a competent engineer and his drive shafts will therefore be correctly specified. Be aware though that there are parts on the market with insufficient 'plunge' such that the drive shaft bottoms out on full bump and tries to punch the hub off the 6 studs. we have seen several cars in the workshops with the hub attachments studs pulled out! Very dangerous. We offer an uprated driveshaft of the traditional design that works well too. Parts are listed below)

  Part No. Description and Comments Price Add to Cart
RTR1009-1K

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RTR Upgrade

ANNULAR CLUTCH REL. KIT TR2-6

Revington TR information: TR2-6 Annular clutch release bearing kit. This annular clutch release mechanism dispenses with the original hydraulic cylinder, push rod, cross shaft, fork, bearing and carrier completely. With all the original linkage parts removed the new assembly... READ MORE

£1023.30

Ex VAT @ 20%
£852.75



Available to order
GMC205

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CLUTCH MASTER CYLINDER .625"

Revington TR information: Spitfire type, not original TR.Has a sloping reservoir.

£99.20

Ex VAT @ 20%
£82.67



RTR1296NK

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RTR Upgrade

LOGIC DEVICE KIT WITH NIGHT DIM -ve

Revington TR information: Electronic Logic overdrive switching device with night dim facility. This extra facility dims the indicator lamp when side lamps are switched on. Negative earth cars. This clever device allows for fast and sequential overdrive operation. Overdrive... READ MORE

£192.67

Ex VAT @ 20%
£160.56



RTR8436

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RTR Upgrade

SWITCH SPRUNG OFF/MOM.ON 40MM ARM

Revington TR information: Momentary operation high quality Switch with an all-metal body and a 40mm chrome arm, suitable for use with RTR1001K, RTR1296PK and RTR1296NK. .

£14.29

Ex VAT @ 20%
£11.91



RTR1001K

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RTR Upgrade

LOGIC SWITCH OVERDRIVE ALL TYPES

Revington TR information: Logic overdrive switching device. This clever device allows for fast and sequential overdrive operation. Overdrive cannot be left in inadvertently, reducing strain on the overdrive. When changing gear with the overdrive left engaged, overdrive drops out... READ MORE

£132.58

Ex VAT @ 20%
£110.48



RTR1296PK

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RTR Upgrade

LOGIC DEVICE KIT WITH NIGHT DIM +ve

Revington TR information: Electronic Logic overdrive switching device with night dim facility. This extra facility dims the indicator lamp when side lamps are switched on. Positive earth cars. This clever device allows for fast and sequential overdrive operation. Overdrive... READ MORE

£192.67

Ex VAT @ 20%
£160.56



RTR8207K

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RTR Upgrade

SWITCH KIT MOMENTARY 140mm

Revington TR information: This switch is no longer available, press 'more info' for links to 160mm version

 
No longer available 
155660

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MAGNETIC DRAIN PLUG

Revington TR information: Magnetic sump plug, catches all the iron filings as your engine slowly wears. Can be used in gearbox and axle too. Don't forget the fibre washer which is sometimes required.

£17.81

Ex VAT @ 20%
£14.84



RTR1371

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RTR Upgrade

MEMBER SLIDING+UJS STD FITMENT

Revington TR information: TR4A-6. Sliding heavy duty drive shaft member. Supplied singularly. These uprated Shafts are supplied with 2 heavy duty UJ's (they have fewer, larger diameter rollers and improved dust caps) and one driving flange, assembled to the... READ MORE

£332.77

Ex VAT @ 20%
£277.31



Available to order
307834ALI

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SUMP ALUMINIUM TR6

Revington TR information: Aluminium sump. Includes baffle and plug however longer sump screws are required. Order 23 x SH605081 Two types of oil sump were fitted to TR250, 5 and 6. Part number 307834 and 307836 the difference being... READ MORE

£575.11

Ex VAT @ 20%
£479.26



Available to order
307834MAG

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SUMP MAGNESIUM TR6

Revington TR information: Two types of oil sump were fitted to TR250, 5 and 6. Part number 307834 and 307836 the difference being the position of the drain plug which was initially at the centre of the front face... READ MORE

 
No longer available