Yes I've finally got 2 jabs & 20 days behind me. But being diabetic I still mask up whenever leaving my home and will continue to do so for the foreseeable future.

 

Most masks, including surgical ones, are primarily to protect others from the wearer. They provide some protection but not complete. To approach that requires a well fitted, fine particle mask, which becomes uncomfortable quite quickly.

Virus carrying fluid particles settle on horizontal surfaces. Outside your own home and cars, it's wise to wear gloves as much as possible, even if it feels a bit odd when it's 30+ C. Gloves are a barrier and discourage us from touching our face. When gloves aren't possible, try to avoid touching things and use cleanser at every opportunity.

 

Yes, there are certainly some people in Sydney that are acting like idiots thats for sure. If the fools would just stay at home and not go out for 1 week we could get this under control.

 

Hi all, Can someone help me out. I have a Mk2 1967 but having trouble with the overdrive. I have live going to the overdrive lever and coming out. I have also put 2 new inhibitor switches on and a new wiring loom from gearbox all tested and working, but i don't have any live feed when in 4th gear to the solenoid (switch is working when in 4th). Have put a tester on it, earth it out but no light come on to say its live.
If there is a break in the wire between overdrive steering leaver and loom can i put a new wire in from overdrive leaver which is working straight to the new loom? many thanks Peter

 

You can do all manner of Bodging but it is important to isolate where you have a continuity break. Are you sure that your OD switch on the column is working? Taking a wire from the column switch to the inhibitor switch is fine. Never bypass the inhibitor switch (A) or you will wreck your OD if you select reverse with the OD engaged. You will break the one way roller clutch unit in the OD. OD only operates in 4th gear.

Are you sure you don't have a blown OD Fuse? B or E below. More likely B. In line fuse holder usually red in colour. I replaced every harness in my car so I've seen it all. Yours is a newer car so it will have the fuses. Original Mk2's only had 2 fuses on the whole car. Jaguar started adding more fuses in line and the OD was one of the first tackled after many solenoids burnt out on the engagement setting of approx 20 amps. Once engaged it drops to a holding setting of 1 to 1.5 amps. These fuses can be anywhere in the wiring & not behind the centre dash panel usually.

 

I know that the solenoid should only work in 4th in the Mk2 but my Dad rewired his for when he was racing hill climbs and sprints in his Mk2 in the 60s so it worked in all gears. It made changing from 1st to 1st OD quicker for acceleration than going from 1st to 2nd. Not sure what he did concerning reverse.
My 1974 MGB GT V8 had OD which was rigged from factory to work in 3rd and 4th. Great as an overtaking gear a bit like the kickdown you get on an Auto box.

 

Many thanks for your reply, all wiring to inhibitor switches are working when engaged reverse and fourth gear. Can only find one fuse on my car, that fuse is B which is fine. Can’t locate E.
Looking at the diagram the wire which goes straight to the solenoid from the overdrive lever is not sending live. So can I put in a new peace from the lever to solenoid as I have live going into lever. I would also put in a in-line fuse.
Peter

 

Without pulling half the dashboard apart I think that is your best option. But please put a fuse in that line.

Warning ~ Fuse values


Remember that Lucas fuse values of 35 & 50 amp etc are old British 1 second blow standard.

Fuses you buy today unless you order specially are American Carry Current rating.

In modern fuse values you should select a fuse of approx half the value of the Lucas rating shown in Jaguar Manuals.

e.g. Lucas Horn fuse = 50 Amps. In modern US rated glass fuses you should fit 25 to 30 amp.

Failure to do this could cause a fire in our car's wiring in case of a short.

 

He either fitted some form of inhibitor so he could not select reverse with the OD selected or was very careful to insure no OD selected before using reverse. You Pop sounds like a resourceful man. I'll bet he rigged a reverse blocking mechanism.

 

I wouldn't use overdrive with the lower ratios on a Jaguar outside racing as I fear they are not really suitable for that much torque on a regular basis. Otherwise Jaguar would have fitted the OD gearboxes to the V12.

I don't like how our overdrive switching operates. It shouldn't be possible to go directly from 3rd to overdrive top. It's easy to modify the system. It needs two relays and the standard overdrive switch has to be replaced with a two pole momentary switch. A micro controller might do it better, but could still need a relay.

 

You are probably quite right Peter. But people will do all manner of things when racing as components only have to last for the duration of the race & can then be replaced.