Well the old banger is due a MOT next week

I have not had a MOT since fitting the Gripper Diff.

Can it be tested on the brake rollers as im sure they turn one wheel backwards and the other forwards when doing the brake test ? I don't want my diff £ucked up.

Any advice ?

Steve

 

Yea, ask the bloke who does your MOT's.

 

i will ask my brother for you
he is an mot tester

 

Both rollers gossamer way

 

Goes the same way lol

 

lol it goes the same way what on earth made you think that steve lol

 

I've never had a problem with mine on the brake rollers only issues when they try get it off they normally go pale and ask me to move it about afterwards.

I had one mot test done where they had an above ground 4poster it was wet out and the tester didnt want me to put it on even tho I offered - it spun up an was sideways in the ramp he asked me to move it afterwards and I told him no cos he parked it.

 

My MOT man carries out a "visual" braking test.
Eg.. Drive across the car park and brake hard.

Not sure how kosher this is but he always asks what kind of diff it is then says "Ahh we best not stick it on the brake test rollers then."

 

i had an mot tester try and do a brake test on the rollers in my 4x4 saff

just stopped him in time

 

Im sure they have a gauge they can use to test the rear brakes on a test drive

Steve

 

I'd be more bothered about welding than the diff.....

 

Bitchy

Steve

 

ask for it to be done on a tapping meter thats what i do as its almost a locked diff so i dont wont them damaging it spinning one wheel up at a time i can only imagine the racket it would make trying lol

 

Sorry mate... It's called ford ownership lol....

 

Actually, a serious post from me for once, are welded diffs ok on brake rollers?

 

shit the bed its happened

 

Was going to happen sooner or later.
And don't want mr MOT man to stick the s14 on the rollers and something not liking the mig-spec diff lol.

 

in 4x4 cars they have a thing they put on the floor that reads the braking force

just ask for that to be used cos its got a funky diff fitted

 

A tapping meter

 

thats the one

 

Hmm, I may just ask for that to be used then!

 

its tapley (its a brand)

there a decelorometer

 

He needed an excuse to start another "look at me" ASW thread

 

Don't they do one rear wheel at a time, never had mine on the brake roller due to this reason.

Steve

 

This is NOT a ASW thread

Steve

 

any kind of limited slip diff shouldn't go in the rollers for the brake test, the tapley meter is used instead

Torsen and quaife diffs don't seem to cause any trouble, as they behave like a normal open diff when there isn't any power through them

and a welded diff is a definate no no in the rollers

 

I'm going to remember this.

 

I'm with mk2 cossie,I didnt think anything with a slip diff should go on rollers for a brake test.The guy who used to do my cosworth used to take it down the road for a brake test.

 

As the presenter of a vehicle for MOT it is advisable to make the Tester aware of ANY modifications that you feel may affect the way an MOT is to be carried out.

A welded diff or even a heavily locked diff will certainly require the use of a Decelerometer - which is no hassle or fuss for the MOT station as this is a calibrated and accepted piece of test equipment and is a compulsary item of test equipment to be available to carry out an MOT

There are many types available but this is what they will look like (or similar) usually used for permanent 4 wheel drive vehicles

 

I've spoken to Tom Seal@gripper and he has said its not a problem for the mot it's not on the rollers long so the plate wear will be min and when the wheel stops it will engage the diff and lock up but by that point the test would be finished.

A welded diff is different tho.

I've had my diff for over 10years and never had an issue with mots.

 

I have two diffs in my car, one at the front AND one at the back, will this be ok for an mot?

 

It`s not a problem to have 4x4 Cosworths on brake rollers, It`s over in seconds and don`t do harm. We also have a 4x4 program on our rollers

 

Lol @ the rollers going in different directions, where on earth did you get that info from?
Its obviously not just cock you smoke, it must be drugs too.


As RS2000CUSTOM has said, a decelerometer can be used when a car is too low to test or has an LSD, thats what I always get them to do on my cars that have LSDs in them.

 

Lol I was joking sorry.
Car never sees the rollers on my Mot's.

 

The ATL brake tester I use at one MOT station when I select 4 x 4 mode it does contra rotate the rollers - but this is no good if the 4 x 4 has an LSD diff in the axle/s

As stated before if u concerned about any part of the MOT Regarding your car then bring them to the attention of the tester BEFORE test starts - we do listen sometimes u know lol

 

This must be what i have seen at the MOT Station i use.

For Chip , it seems you ain't always correct

Steve

 

This is the one that I use that runs rollers in opposite directions when in 4 x 4 mode

http://www.swge.co.uk/mot_major_test...ake_tester.asp

 

In northern ireland all cars go down the brake rollers. 4x4 are done 1 wheel at a time. The only car that doesnt have to is one with wire wheels because the rollers will wreck them and they get the tapley meter. welded diff throws the trip on the rollers and is not a tapley meter test its a fail. All cars with lsd are tested on rollers too.

 

Makes a change !!!!!

 

Tapley meter used for test, and it passed

Steve