Help, changing gearbox to manual.

On or around Thu, 07 Apr 2005 21:10:53 GMT, Chris Glen-Smith enlightened us thusly:

Which autobox?

if it's the 4-speed, don't write it off without trying tweaking its kickdown first... get the setup right and they go well. Try driving it at 50 mph, and flooring the throttle - it should change down in to 2nd. If it doesn't, the kickdown isn't set right (or less likely, isn't working internally).

I had a 3.5 V8 plus auto box combo in a 110, and it was great, once I got it set up right.

as to which will fit, etc...

while the block is pretty much the same chances are it's a different compression ratio from an injection one.

However, in princple, you can swap all the bits and also get the wiring loom and ECU. In practice, you're most likely to find all that lot along of an engine, so you might as well source the complete engine and injection gear and swap the whole thing, then sell the carb V8 or keep it as a spare.

as to the gearbox/tbox thing - if the transfer box has a difflock position (high-low lever also moves left-right, as well as back and fore) then it's an LT230 transfer box and should fit with either the LT77 or R380 5-speed manual.

If the high-low lever only goes back and forward, you have a Rangie-type Borg warner T-box, and you'll probably want to swap it for the other sort.

Hi, thanks for advice.

It's a 3 speed, if a 4 speed came along I'd try it as I it would be an easier swap than a manual. What is the likely fuel comsumption hit does the auto have, I've not yet had a chance to measure my mpg.

The hi/lo lever moves side to side so I guess thats an LT230.

Do you know of a web site with the ratios of the various gearboxes?

Cheers Chris

Aust> On or around Thu, 07 Apr 2005 21:10:53 GMT, Chris Glen-Smith

On or around Thu, 07 Apr 2005 22:52:29 GMT, Chris Glen-Smith enlightened us thusly:

110 with 4-speed auto on LPG used to get about 11 mpg. By comparison, the disco with a manual box gets about 13. The disco does about 18 on petrol, unless you're *very* careful.

both the gas systems are open loop, the disco petrol system is hotwire, but still open loop.

Crumbs, I get better than that with Grumble...

At our local Jet station, LPG is currently 29.9p against 85.9 for petrol. I want my Disco back!

By my reckoning you should be getting about 43 mpg by price, assuming it still does 15mpg on gas.

Kin eck - 39.9p / L ere...

No problem, you do realise they appreciate in value though, don't you?

Yeah I reckon so too. Mind, I'm going to replace the leads for some megnecors and put one of them ignition chip jobbies in too.

If only I could stop the tyre going flat every couple of weeks... (but then, Grumble does the same with the NSF).

It's all those down hill runs, what with those extra tyres and all that...

not that I'm saying.... ;o)

Lee D

The gravity of that comment will not be forgotten...

You have gravity as well?

You owe me a paintbrush... Don't think I've forgotten.

On or around Fri, 08 Apr 2005 12:15:55 +0100, Mother enlightened us thusly:

yebbut, Grumble has a decent engine - mine was a succession of tired 3.5s...

There's a good deal of evidence that the larger engines achieve better results. I might one day look at a 3.9 disco, either this one or a replacement.

I'll vouch for that. My experience is that as the engine isn't really being overworked, I keep the revs within reasonable boundaries. Mind, hammering it down the M1 at 75 does tend to have an impact - but townie use is similar to 28mpg (LPG bein half the price an all).

On or around Mon, 11 Apr 2005 09:34:56 +0100, Mother enlightened us thusly:

I bet if you had a 3.5 in there still, you'd notice it slurping the juice.

'tis a fact that a lot of my mileage is slow, low-gear sort of work. On long steady runs (unless they involve motorways and high speeds) it does do slightly better, but not a lot.

Not only that, but I reckon it'd actually be quite dangerous as I'm now used to having the power at roundabouts...

One reason I've become something of an auto-convert is the s*dding town stuff. Changing gears in a 101 is a pita as the threshold speeds mean you're either between 1st and 2nd or 3rd and 4th pretty much all the time - it's impossible to do a steady 30mph in either 3rd or 4th.

I really must try harder to remember that the Disco is manual - my neighbours think it's very funny when I stall the engine at the end of the road after having driven Grumble for even a short while :-)

If you keep on all this talk about Auto's and 101'sI may have to kill file you ;o)

I'm just begining to get somewhere with Percy now, refitted the front cross member, exhaust manifolds and core plugs today. Just hope this engine is ok.

I can almost see the surface of my work bench.

I have progressed to 2 pathways through the garage and I may even get paint on Morph some time this year. Alfie is doing his best to distract me still with his green wing and door awaiting paintwork.

Lee D

You forgot the 4.6L V8 and jacuzzi...

And you'll no doubt be turning up in the luxury gin palace for Marque Day again?

I'll remember to take a tow rope in case Alasdair forgets his...

It's not looking promising this year :0( Clashes with work and with Bank holiday rates I can't justify sneaking the day off.

I'm off outside again to do some more work on Percy... it's slow going... but you never know, if I get there for a day he may get an outing... sadly minus the 4.2 though.

The other serious temptation is the Northern unofficial but I've got to sort some Tow bar supports first and some Paint would be nice.

Lee D

The Northern event this year is set to beat records I reckon. Anyone with a 101 (within range) who misses it must be totally bonkers...

wibble wibble wibble