Another couple of daft questions

[Old Warthog]

What are the correct tyre pressures for my S3 88"?  I'd hate to fail the MOT because of something daft like this.  Its on standard road biased tyres at the moment.

Can you fit brake servos to these?  When I drove it back the other day it was pretty scary with the amount of distance it took to stop.  I am getting the brakes looked at pre-MOT, but it would be nice not to have to stand on the pedal every time you need a bit of retardation :?

Cheers for your help

Keith

[joe90]

theres a square nut on the back of the brake mounting plate on the axel, this opperates a cam inside and the wear on the break shoes can be taken up as they wear down - scary stopping distances, sounds about right for a series 3.

I found my brake master cylinder leaked so kept having to pump the break peddle to get the right pressure. New cylinder and full set of pads from Paddocks soon sorted that out tho.

Not to sure about the tyre pressure, mine runs on Wildcat MST which recomends 28psi all round - the Haynes maual says 25 lb/in2 (PSI) section 11.1

hope that helps

[Miniman]

A servo is the way to go but you need to have the brakes set up first to get something out of them. A 90 servo and pedal fits nice. there is a small brake pipe conversion to do as the 90 servo and master has 2 output pipes and my series only had one. Easy done tho. There is a splitter below on the chassi which can be used....

[matthew]

What are the correct tyre pressures for my S3 88"?  I'd hate to fail the MOT because of something daft like this.  Its on standard road biased tyres at the moment.

I run my 109" at about 25 - 28 psi

Can you fit brake servos to these?  When I drove it back the other day it was pretty scary with the amount of distance it took to stop.  I am getting the brakes looked at pre-MOT, but it would be nice not to have to stand on the pedal every time you need a bit of retardation :?

Cheers for your help

Keith

A servo won't make it stop any better, it just means a bit less effort. Check the brake shoes are adjusted properly. If you insist then some S3s had a servo as standard, or you could fit 109 brakes or discs.

[mark.yellow.series.3]

the non servo brakes on my s3 are acually very good i think, again check adjustment, and make sure they are properly bled, that will make a lot of difference.

[Devon-Rover]

Check that there isn't a partially sezed or come to think a few partially seized wheel cylinder pistons. The non-servo system should still be able to lock the wheels or at least cause the nose end to dip when under heavy breakng. Check all the shoes are in good nick and that the drums are not too over sized causing the wheel cylinders to be at maximum expansion, so no more braking effort is availble at the shoes.

[Miniman]

the non servo brakes on my s3 are acually very good i think, again check adjustment, and make sure they are properly bled, that will make a lot of difference.

I totaly agree with you. A well set up set of drums are super for stopping a series motor....

[Old Warthog]

Thanks for the advice guys.  Have sourced and fitted a servo, bled the brakes and checked the adjustment*.  Bit better, but not a lot.  Will check The pistons next.

* The "I" in this case means 25% me, 75% Lee, my mate.  But at least I know what to do in future. :lol:

Have also managed to find a guy who has done lots of welding on Series models - it was him I got the servo off, for a pint!!  Friendly bunch you Series owners.

Cheers

Keith

[Miniman]

Looks like ya hooked already mate. These series motors are a pain in the but keith but you just seem to get attached to them. There are plenty of things you can do to them but thats the problem because the list is never ending. I am at the moment the owner of 3 but one was bought for spares so its soon to be a square piece of metal. Found a few more spots on the old safari that need a welder so may be getting on with that soon.....

Series brakes are very hard to set up correctly. Once you have them at there best you need to drive it then they bed in and work more evenly. Which is a pain for the MOT as you need em right.....

[fire boy si]

have a look on the series 3 website or better still become a member they haye a section with all the factory tyre sizes and presures

[dew1911]

but it would be nice not to have to stand on the pedal every time you need a bit of retardation :? Keith

Fancy fitting a Retarder? Our school buses use them and there a mean piece of kit for stopping :D

[Miniman]

Hows the motor coming along keith ? Not seen much of you on here....