9" servo conversion question????

yeap the 90 spec servo is different the convertion only works with the 22mm master and servo that was fitted to the 90 on 16v, one off an e reg is the same as the mk1 i.e. uses 20 mm master. we had loads of problems with this too so don't give up!! :y:

THanks mate, you've been a huge help.

I'll try source one ( don't think the car will make it on Friday  

Can the master cylinder stay the same, or do i need both the servo AND M/C?

Cheers, I owe you a pint!

J

it sounds like the right m/c but a new 22mm one from gsf or eurocarparts is only around ?25 and it has 4 outlets so u can fit the pipes as they were ment to go.

Nice one volkswarren  

Always match the correct master to the correct servo and use the Mk1 type clevis mounting pin with the return spring . Or your brakes will bind .

Archive ……….. Material .

and don't buy a cheap master cylinder, always buy the better quality option  :wink:

has anyone got any piccys of the brake pipe set up in the engine bay after the conversion has been completed plus an explination of exactly what to do would be nice ops: .
perhaps before and after piccys?????
this is all i need to crack on with mine.

ta
 John

Anybody know the thread size of the unions that go into the m/c?  I'm assuming they are standard pipe thread fittings but unsure

theDaddyUK said

Anybody know the thread size of the unions that go into the m/c?  I'm assuming they are standard pipe thread fittings but unsure

Yep metric standard ……….

chudd said

Yep metric standard ……….

Cool, thanks mate

What are the two electrical connections on the mk1 master cyl? I know one is a brake light switch, but what is the second one? :dontknow:  
I have pics of two mk1 16v`s with this conversion and they both have only one electrical connection to the master cyl.

I have a 4 port 22mm master cyl and 9" servo from the mk2 16v. There are 5 connections to the original m/c, 3 hydraulic (one with a T in) and two electrical.

I am planning to use a single port for each front, a single port Tee`d for the rears and a single port Tee`d for the electrical connections. Or use a single port for each rear with a tee ineach for each electrical connection.

Would this be a satisfactory way of doing this? Or is there a simpler/ better way?  :?

Cheers

The 2 electrical connections are for the hydraulic brake light switches. Some people have used a Scirocco pedal bracket style brake light and then used the 4 ports of the master cylinder to each wheels, thus eliminating the need to use T pieces to fit the original switch.

I had a 2 port 16V master cylinder, so I needed to use T pieces anyway. So I used the original T piece and 2 more to achieve 5 connections, one for each wheel and one for the brake light:



It is important to make the connections right, so that the front of the new master cylinder feeds the front right and rear left wheel; and the other one feeds the front left and rear right wheel. This preserves the safety benefit of having dual-circuit brakes.

Nice one Paul!! Is it necessary to kep both switches?

i thought the switchs ran in parrelell anyway? (ie no) but worth checking that.  Even better, loose both the hydaulic switchs and wack a switch on the pedal box as Paul said … :y:

Just use one froma Scirocco then, I was wondering what car to get this from?

Cool I have one of those.............. A scirocco I mean. Easily done?

Think when you do the scirocco coloum switch you have to cahnge the lot so quite an envolved job.

Couldn't be bothered with this so I took the pedal switch off a my 94 passat, and fitted to some angle steel and bolted it to the pedal assembly.
They have a captive nut in just the right place, think it's for cedal switch assembly for scirocco, or someone told me ages ago a very early form of cruise control??? Or maybe the were taking piss out of me?

Cool I have one of those for parts tooo............. a 94 passat. Or would it be just as easy to eliminate one of the brakelight switches, using only one and just Tee it into one of the lines?

g1 said

Cool I have one of those for parts tooo…………. a 94 passat. Or would it be just as easy to eliminate one of the brakelight switches, using only one and just Tee it into one of the lines?

That's what I did. You need to fit at least one more T piece anyway, why not just fit another while you're redoing all the plumbing?

Yeah, I think your prob right, I should just do it instead of keeping on asking Q`s. ops:  If I find a way of improving it later I can always alter it.