Servo in a MK1, Need some general servo advice

Guys,

I'm fitting a MK1 Golf brake linkage and servo to my MK1 Polo. I have all the parts but just need some general servo info.

I have a MK1 Golf servo and a MK2 Golf servo...pic below (MK1 on the left, MK2 on the right):

(Posted Image)

MK1 diameter:

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MK2 diameter:

(Posted Image)

I also have an old MK1 Golf master cylinder, an old and a brand new MK1 Polo master cylinder and also an old MK2 master cylinder (which the reseviour will not fit on).

Anyway, my main question is this......does a larger diameter servo have better 'performance' than a smaller diameter servo or is there no difference? I would like to fit the smaller MK2 Golf item above if there is not difference but if the MK1 item is superior because it is larger then I will recondition and use this.

Also, the MK1 Golf master cylinder had 2 switches on it (pic below) where as the MK1 Polo only uses 1. Why does the Golf use 2?

(Posted Image)

There is also this connector block thingy on the MK1......again, what is this for (pic below)?

(Posted Image)

The setup that I am going to run with is brand new VWII calipers up front fitted with brand spankers vented dics and pads, with brand new everything (drums) at the rear. I do not plan on using a brake pressure regulator, basically because I don't have one.

I know people use 22mm master cylinders (from post '90 MK2 16v Golf's I think) when upgrading their braking system but does this have to be coupled with the correct servo or can I still use any of the above 2 seeing as I have them to hand? Also, the MK2 Golf master cylinder that I have only has two pipe outlets which I know I can get round by using 'T' pieces further down the lines but does this have any adverse effect? Would a 22mm master cylinder still only have two pipe outlets? I do not have a resevoir that fits the MK2 Golf master cylinder though.

Basically, I want to use the best setup I can without shelling out a load of cash seeing as I have a lot of the parts already! Also, as I plan to keep my engine bay quite neat and tidy, the smallest (but best) setup I can use would be handy too!

Cheers,
Chris.

I'd be tempted to mock up whatever fire mate and try it.

I'm using a smaller MC and find the brakes fine even with more power now. These things are so light that you could probably just cut a hole in the floor and stick your foot on the floor and stop it still.

Sorry not much help really.

What pad carriers are you using? I went To change the hoop type over to the flatter ones and found they won't fit. Doh.

Cheers Ian!

I'm using standard VWII carriers with standard G40 discs & pads (which I think are the same as early MK2 Golf Gti 16v - 239mm, vented).

I may look into getting a 22mm master cylinder as people fit these when upgrading (unless my brand new MK1 Polo item fits a servo). What I'm not really sure of though is the job of the servo - is it a case of the bigger the better (so the larger MK1 item above would be better than the smaller MK2 Driver item)?

Thanks again for any help peeps!!

Cheers,
Chris.

I'd go with golf Serbia then. As a golf would be heavier and overall have s higher top speed. Therefore I would reckon that even though its a bit smaller it must be more efficient.

That'd the logical explaination anyway.......

If you haven't already it might be a good idea to build up the discs pads etc onto the strut and check that your wheels will clear them.

Back space is a bitch.

Good luck

;)

Ian, they are both Golf servo's - the larger is a MK1 GTi item & the smaller is a MK2 Driver item. So which do you reckon has better performance? Is it a case of the bigger the servo the bigger the vacuum or because its larger does it create less vacuum? A bit like a small diameter central heating pipe having higher pressure than a larger diameter pipe? I don't suppose it'll make much difference but I only want to be refurbishing one of them.

As for the wheels.....I know they already catch the calipers badly but these wheels are definitely staying...no matter what!! Lol

Ain't got a clue then mate.

I think I'd try and stick to the same mk stuff maybe. Just to stop any compatability issues .

I'm sure a mk1 golf gti set up will be ok for the polo.

I wonder if the two switches on the MC were for separate brake lights? Pm saf he'll know as he's got s mk1 gti.

The other possibility is to sell this lot and buy Ratsports remote servo. 146 squids. I've got a vw splitter thingy from a mk3 polo with some bits of pipe. Chuck Mr your address and i'll stick it in the post to you.

A guy on ebay does pipes in copper. Any size any ends. I'll hunt out his contact for you.

more info on ratsports remote servo please :D

i searched for them ages ago and couldnt find anything but i have heard of them before.

Just Google then mate. Based in London and classic car msg raved about their remote servo. (why does my phone want to say Serbia instead of servo? )

Had loads of little bits of them over the years. Sent back my battery quick release thingy when it broke and they sent me a new one foc. Brilliant.

Don't really help Chris though.....

Sorry mate.

;)

Hopefully this should work (trying to operate from phone, so apologises if it don't)

http://shop1.actinicexpress.co.uk/shops/Ra...e3955d42adcd720

Yeah I'm sure that remote servo is the bollox but this lot I've got cost me nowt so for the sake of saving £150 I'm gonna stick to the MK1 Golf setup.

Cheers,
Chris.

Would need two of them too if important not mistaken as mk1 polos are on a twin line circuit.