diff

[series3lancs]

hi

 

is there anyone out there who can help !!!

 

i have just destroyed my diff i have a series 3 1970 with a crossflow

on the tag says its a 4.11 dont know if this is correct !

 

is this the correct one ?

if not what do i need ?

and do i get it rebuilt or get a new one ?

 

hope someone can help

cheers

 

jon

[Stationary M25 Traveller]

Welcome aboard - your first posting.

 

Don't worry - plenty of useful advice will be along very soon !

 

******************

And you run and you run to catch up with the sun, but it's sinking...

 

And racing around to come up behind you again. photos

[Paul Richards]

Assume this is a Ford live axle.

The 4.11 is the ratio. You have a number of standard ratios to choose from with a Ford diff, normally anything from 3.54 to 4.44.

4.44 is the lower ratio and 3.54 the higher. Assuming you are happy with your current ratio then a straight replacement is the way to go. If you take out the old diff you can count the teeth on the crown wheel and pinion, (or whats left of them) and divide them to confirm the ratio. I think for a 4.11 the crown wheel has 37 teeth and the pinion 9.

Do you repair or get a new one? You'll be lucky to get a new one.

It really depends what the damage is. I would suggest you take out the diff first and have a look. Is it an LSD?

Likelihood is that damage will be to crown wheel and/or pinion teeth, or the pinion bearings.

Your options are to contact one of the specialist gearbox/diff builders (Road and Race, BGH etc.) for a rebuild or visit a scrap yard for one, although there are not many live axles around. The 4.11 was fitted mainly to Escort vans/estates.

 

If you need a slide hammer to remove the half shafts, I can lend you one.

 

Paul Richards

Area Representative - L.A.D.S. (Lancashire and District Sevens)

www.lads7.co.uk

Growing old is compulsory - Growing up is optional

 

Edited by - Paul Richards on 14 May 2007 22:42:10

 

Edited by - Paul Richards on 14 May 2007 22:44:54

[DaveMorris]

Alternatively, for 1970, it could be (and probably is ?) an Ital axle. They also come in 4.1 ratio

 

Same comments apply as from Paul above though.

 

Check the p.c.d. on your wheel studs to see which one you have.

 

DAve.

 

X-flow(er) power now resting. Trying Vx for a change.

[MarcNS]

Rimmers will have what you need if it is BL based.

 

Do the old Lotus brand alloy wheel fit on ital studs ?

 

 

[roger7]

Join the club.

Just last week I collected a fully re-built diff from Road and Race Transmissions who are near Sevenoaks. Have fitted the new diff, but am still reassembling the rest of the axle.

RRT took my old, rather tired one in exchange. Phone Phil Stewart (01959 525105) who has just built a batch of Ital diffs. He may still have one on the shelf but he can only supply the 4.1 diff.

Be warned: Removing the hubs from the half shafts is not easy. Don't be tempted to use a normal 3-leg puller - I'm told it will damage the hub. I managed to borrow a heavy duty puller that bolted onto the four wheel studs and even then I had to wind it up considerably. Have never used a slide hammer so I can't comment on that.

[roger7]

Whoops - Was too quick on the 'send' button!

My car has the Ital axle. Yours may have something different.

However, Phil Stewart's advice would be very worthwhile!

[roger7]

Whoops - too quick on the 'send' button.

My car has an Ital axle. Yours may be something else.

However, I still recommend using the right puller and contacting Phil Stewart for advice.

[Stationary M25 Traveller]

You can edit your posts - click on the right hand icon - with the magnifying glass !!

 

******************

And you run and you run to catch up with the sun, but it's sinking...

 

And racing around to come up behind you again. photos

[S47zz]

It's an escort axle - Itals Didn't exist in 1970 they were then called Morris Marina's - yuch ❗

>

If you've never taken the halfshafts out be prepared to swear a bit, and yes you'll definitely need a slide hammer for their removal - good luck

[DaveMorris]

Oops, I stand corrected.

[series3lancs]

many thanks for all the help

my diff is in the process of being rebuilt so should be on the road soon

 

cheers

[Paul Richards]

Top Tip:-

When you rebuild the axle. Put a bit of silicone into the end of the axle before you push in the halfshaft. This will seal the halfshaft bearing to the axle and stop oil leaking out onto your brakes.

 

Make sure you take it on a test run - trip to LADS meet on 1st Wednesday of the month would be ideal.

 

Paul Richards

Area Representative - L.A.D.S. (Lancashire and District Sevens)

www.lads7.co.uk

Growing old is compulsory - Growing up is optional

 

Edited by - Paul Richards on 27 May 2007 14:32:25