Greasy bits!

[york33]

Greetings all

Well, folllowing further stripping! I'm pondering various things and am seeking advice of the collective

Gearbox, 4speed on V6, do I recon or swap for type 9 5speed? Main thing wrong is linkage/shift is %$&*, more play than you could shake a (gear)stick at. I know what's involved in the swap, but should I....?

Diff, has anyone done a recon? It leaks, from the rear casing and from the front where the prop goes. Are the seals easy to sort?

Brake lines? Any idea what thread they are? I'm a cheapskate and want nameless shiny hoses, not (specially bumped up price) TVR special.

UJs, how much play should you be able to feel when you've got one in your hand?

Think that's the lot for now, back to my beer

cheers
Dave

[chassis 33]

york33 said:

Gearbox, 4speed on V6, do I recon or swap for type 9 5speed? Main thing wrong is linkage/shift is %$&*, more play than you could shake a (gear)stick at. I know what's involved in the swap,

The 5speed sierra box is shorter by about 1/2" than the original 4speed. So you need to either get the propshaft lengthened or (as i did) move the engine back. Other than that if your car is prior to chassis 65(ish!) and has the Broadspeed co-axial slave (which you may want to swap for either a standard Ford cable or create a special hydraulic system (mine uses fiat Punto main and slave cylinders against a sierra clutch arm)

york33 said:

Diff, has anyone done a recon? It leaks, from the rear casing and from the front where the prop goes. Are the seals easy to sort?,

Not recon, but re-sealed it, there was a thread a few weeks back on this, the parts are still availible from Jag dealers (atleast they were a couple of years back)

york33 said:

Brake lines? Any idea what thread they are? I'm a cheapskate and want nameless shiny hoses, not (specially bumped up price) TVR special.

M10x0.75 or 3/8 UNF I cant remember which exactly, although all my invoices for brake bits have 3/8UNF. IIRC the Jag brakes are imperial, the FoMoCo and Princess are metric.

york33 said:

Think that's the lot for now, back to my beer

Likewise!!!

Regards
Iain

[grady]

IMHO and with no experience other than too many revs at spreed, I would go for the 5 speed.

However, If you stay with the 4 speed, you can get a replacement (and reproduction) bushing for 20 USD that has worked wonders for my transmission. I intent to take it apart one night this week and check the wear but so far, it's great, completely tightened up the shifting and very easy to drop in. Grady

[wedg1e]

U/Js: if you can feel ANY play, it's shagged!
If you can ake it move with your puny... what, 30 lb.ft? arms, what do you reckon 150 lb.ft. will do to it?
As to the box swap: there's a lot to be said for having one gear that'll do 15-125 mph
The 5-speed may add a bit of economy on a cruise, but how often do you cruise? I bet my 5-speed spends more time in 3rd and 4th than 5th...

[york33]

Cheers people, I really can't decide on the box. I might have a go if I can get a cheap bearing and see how it feels. That's the main thing that annoys me about it, the 6" throw on the stick and 2" slop! Then again I might be back on the 5speed idea, who knows.......

UJs, couldn't decided if they should have a bit of play designed in for some reason!

Time for an archive search......

cheers
Dave

PS and my arms are not puny Ian, grrr

[paul gotts]

york33 said:

Diff, has anyone done a recon? It leaks, from the rear casing and from the front where the prop goes. Are the seals easy to sort? Dave

Leaks from the front might indicate that the nut has slackened off. If so, its not just a case of tightening it back up, as it is set to a specific figure to give the correct preload on the pinion bearing via a crush washer. Really would need to be stripped and rebuilt. Someone else was having possible diif. probs. a few months back - should be in the archives.

[jon@127]

Dave,
I don't know how cheapskate you are but regarding the brake pipes, I got a set of 3 SS braded ones from RT Racing for about £40 I think. Seemed reasonable to me for hoses that are guaranteed to fit. What I wasn't so happy about was the £5 each I was charged by local garage to make up the 6 inches of solid brake pipe that I knackerd when I took the old flexibles off.
Jon

[FHCNICK]

wedg1e said:

U/Js: if you can feel ANY play, it's shagged! If you can ake it move with your puny... what, 30 lb.ft? arms, what do you reckon 150 lb.ft. will do to it? As to the box swap: there's a lot to be said for having one gear that'll do 15-125 mph The 5-speed may add a bit of economy on a cruise, but how often do you cruise? I bet my 5-speed spends more time in 3rd and 4th than 5th...

exactly what he said the 4 speed box imo suits that engine change it and i'll bet you will be disappointed, wedg1e forgot the ability to cruise in 1st gear is very handy in traffic 0-40 in first and anywhere up to 30 being comfortable cruising.

[grahamw48]

Isn't the 4-speeder supposed to be a lot stronger too ?

[FHCNICK]

grahamw48 said:

Isn't the 4-speeder supposed to be a lot stronger too ?

I have heard tell of that iirc the 5 speed box wasn't a new design it was the 4 speed box with an afterthought 5th gear added, don't know how true it is though.

[pwd95]

I had a couple of Capri 2.8i's one 5 speed and one 4 speed. The 4 speed car was a much better car for several reasons. The 1st three gears were a slightly different ratio in the 4sp so acceleration was noticably quicker. Yes the 5sp gear box was weaker (mine failed and my mates failed!). There was talk at the time in the Capri Club that the 4sp box was a better box, 4th was the same ratio in both. The only thing 5th achieved for me was to give me lower revs on the motorway. Top speed was higher in 4th! because the engine didn't have the grunt to take 5th high enough, ahem, apparently. Interestingly 5th in the XR4I (which had the same engine and box) gave the same mph/1000 rpm as 4th in the Capri! Different diff ratio aparently. Hope this helps.

>> Edited by pwd95 on Tuesday 17th May 16:07

>> Edited by pwd95 on Tuesday 17th May 16:08

[grahamw48]

Useful stuff.
Thanks pwd95

[FHCNICK]

grahamw48 said:

Useful stuff. Thanks pwd95

ditto, another thing to remember is that the diff ratio was probably originally chosen with the 4 speed box in mind, optimum final drive gearing etc...

[chassis 33]

FHCNICK said:

I have heard tell of that iirc the 5 speed box wasn't a new design it was the 4 speed box with an afterthought 5th gear added, don't know how true it is though.

Sierra 5spd boxes (Type N) and Capri 4spd (Type E) are totally different beasts.

The 5spd was fitted towards the end of 280 production as standard, IIRC.

The comparative gear ratios are
Type E Type N
3.163:1 3.36:1
1.842:1 1.81:1
1.412:1 1.26:1
1.000:1 1.00:1
N/A 0.825:1

(pinched from the 'bible')

IMO chances are the rear diff is what it is because thats all they could get from Jaguar.

Regards
Iain

[grady]

And (at least over here) there were at least 2 different Jag diffs with different ratios at that time.

At one point, I swapped the damaged original higher ratio non-LSD in my wife's XJ6 SIII with a lower ratio LSD from an XJS. It was a straight bolt-in conversion but since we had to drop the rear cradle, it resulted in a complete rebuild of brakes and UJs,etc. Big $$$ but was a bit quicker.

Good thing it was an Jag and not a TVR or I would had to powder coat the whole thing too.

[grahamw48]

I had a couple of XJs back in the seventies ( still a wealthy batchelor then ).

IIRC, Jag diffs ranged from 3.54 (2.8 litre models), through to 2.8 or 9 to 1 for the bigger engined cars.

Tyre size was 205(70?)x 15.
It will all be in the Haynes, which of course I've chucked out now.

Very early (mk1) Capris had 3.22:1 diff, from memory, as they had the less powerful Zodiac engine, with 13" wheels.
The later V6 Capris all had 3.09:1 diffs with 185/70x13 tyres as standard. Some specials had 14" wheels.

[chassis 33]

grady said:

And (at least over here) there were at least 2 different Jag diffs with different ratios at that time.

Quite, my chassis is missing plates etc that i've seen on the factory parts diagrams, the cutaway in the brochures and on other series 1 chassis, my car shows no sign of ever having a swill pot, although i thonk is should have one...etc so who knows what they put in in terms of diffs!!!

Regards
Iain

[york33]

Thanks everyone, all useful info, appreciated heading towards keeping the 4speed if I can recon it myself. I've always steered clear of gearbox/diff stripping, but hey, how hard can it be!? Famous last words As for the other bits, I might well end up with RT for braided hoses, but if I can get generic bits half price from elsewhere I will, the solid lines aren't a prob to make up myself.

Just got to get a few annoying bolts extracted, grrrr, I'm almost down to a bare chassis now

[grahamw48]

I've got the RT braided ones on mine.
Cute little things.

They're supposed to give a firmer pedal too.