M50B25 brake servo ADVICE!

Sun Jun 21, 2015 5:30 pm

As the title suggests. What is the best brake servo for the M50 conversion in your opinion. I'm thinking of carrying out the conversion but need some advice. I've come across so many threads and it's confusing!

Some people have used the
Golf (Mk1 or Mk2 server??)
Clio server
Porsche 944 server

Some have used the 325ix and some say they've used the same standard ones.

I understand some of these require a lot of work. But which one would be the best in terms of stoping and the overall feel. And also easier to source!

Sun Jun 21, 2015 6:03 pm

Basically all of the above. You can use the standard E30 servo, but it needs moving over towards chassis leg - this is quite a bit of work.
The VW Golf and Porsche servos fit, but they are old now and may be more difficult to find. You will need a small spacer to fit between the pushrod in the servo and the master cylinder.
The Clio servo will be the newest available. It fits without issue other than also needing the spacer as above.
No idea on the iX servo, but it won't be easy finding one in the UK.

For me, it would be the Clio servo everytime.

Sun Jun 21, 2015 6:29 pm

Thanks for the reply... I can get hold of a VW golf servo. But do you think the Clio server would be better as it is newer technology?

Overall is the Clio servo better than the VW servo?

Sun Jun 21, 2015 8:16 pm

Clio for me also,golf stuff is too old and overpriced "rare" shyt

Sun Jun 21, 2015 8:18 pm

I wouldn't anything French, on my Car personally

Sun Jun 21, 2015 8:26 pm

I agree on the french line but they use bosch servos

Sun Jun 21, 2015 9:03 pm

what year Clio server would be ideal the conversion?

Ps. Does the golf servo have to be a Mk1 or Mk2?

Sun Jun 21, 2015 9:09 pm

Plastic winged Clio (2001-2007 I think).
Mk1 Golf GTi or Mk2 Golf 1.3 - they are slightly different but both fit.

Having used both the VW servos, I would recommend the Clio servo.

Mon Jun 29, 2015 4:20 pm

I used a Clio servo on my M52'd Touring. It's a Bosch item. Luckily enough I found it on ebay being sold by a Renault parts dealer. It was brand new in the box and for a bargain price, so I was lucky. If you scour ebay and Renault forums you may find a bargain too. Just takes a bit of time and patience.

As for the operation of it, I'm very pleased with it and it works very well.

Mon Jun 29, 2015 5:47 pm

Yeah I used a Clio one also, works really well, cost about 35 quid off the Bay.

Fri Jul 10, 2015 9:14 pm

Does anyone know the dimensions for the spacer required? And have anyictures?

Fri Jul 10, 2015 10:17 pm

Acaciastrain360 wrote:Does anyone know the dimensions for the spacer required? And have anyictures?

Quite often a cut down bolt is used for the spacer.
The spacer length will vary from car to car, it's just trial and error to find the length for your car - you obviously don't want it too short so there is slack between the servo pushrod and master cylinder, or too long causing the brakes to bind.

Fri Jul 10, 2015 11:43 pm

A question to add to the back of the above one - you do screw the push rod on the servo in as far as it will go?

I did and plan to knock up a spacer tomorrow so hope that 20mm will be around the right length!

Sat Jul 11, 2015 9:29 pm

anothere21323i wrote:I used a Clio servo on my M52'd Touring. It's a Bosch item. Luckily enough I found it on ebay being sold by a Renault parts dealer. It was brand new in the box and for a bargain price, so I was lucky. If you scour ebay and Renault forums you may find a bargain too. Just takes a bit of time and patience.

As for the operation of it, I'm very pleased with it and it works very well.

Yours was a great find Tony! Biggest/newest servo I've seen so far, still got a pic of it, perfect fit

Sun Jul 12, 2015 6:50 pm

WillNZ wrote:
jmc330i wrote:
Acaciastrain360 wrote:Does anyone know the dimensions for the spacer required? And have anyictures?
Quite often a cut down bolt is used for the spacer.
The spacer length will vary from car to car, it's just trial and error to find the length for your car - you obviously don't want it too short so there is slack between the servo pushrod and master cylinder, or too long causing the brakes to bind.
Just remember the brake pull rod from the pedal linkage to the booster linkage is quite adjustable so you dont have to fiddle endlessly with getting the spacer length just right. Just make sure it is not too long, as mentioned above!!

So I need about a 15mm spacer made from a cut down bolt? And where do I place this? Does it just sit somewhere?