brake servo

[kenpage]

when my s2 was running the idle was all over the place and i could not get it right,i could here a slight hissing and suspected the servo but i did not recon on this http://kenpage.myphotoalbum.com/view_album.php?set...

[pringli]

thats bad news - I think Kevin Bell (ketvrin on here) had a similar problem a while back -- but not so severe - got a replacement servo yet?

[ketvrin]

Hells Teeth Ken

that looks even worse than mine was...

K
pictures of old and new on myphotoalbum if you are interested

[kenpage]

yes i got another in the parcel of parts when i bought the chassis. i could feel a bit of rust underneath but the bad bit was hidden at the back on the side closest to the front wing as such so the total horror could not be seen until i removed it mmm food for thought is it not

[pies]

i thought mine was bad

[Barkychoc]

I don't think Jim could fix that!
I haven't taken mine off yet but have another that I got from fleabay a while back from a Fiesta XR2i for £8.

Chris

[greymrj]

Mine wasnt good but it was a whole lot better than that! Impressed!
It looks like the same servo as my S1, the almost unobtainable SAAB one. Although I got a new SAAB one we do need to find a viable alternative and I also looked at Ford. With the help of a factor friend we tried to find a servo with the same number and PCD of mounting bolts, the same (or very similar) length of brake lever connection arm and fitting, the same bolt sizes, PCD and angular location for the master cylinder. We didn't find one. I hope someone else has more luck and posts the details.

[greymrj]

Mine wasnt good but it was a whole lot better than that! Impressed!
It looks like the same servo as my S1, the almost unobtainable SAAB one. Although I got a new SAAB one we do need to find a viable alternative and I also looked at Ford. With the help of a factor friend we tried to find a servo with the same number and PCD of mounting bolts, the same (or very similar) length of brake lever connection arm and fitting, the same bolt sizes, PCD and angular location for the master cylinder. We didn't find one. I hope someone else has more luck and posts the details.

[ketvrin]

I'm thinking out loud here...

If the system downstream of the master cylinder is the same, and if the pedal movement and position is the same, then provided the swept volume of brake fluid is the same (dia x stroke) it should be a relatively straight replacement.

The bulkhead would need new holes to accept the Ford servo. Perhaps the pedal clevis/pivot point would need to be modified (I've not seen the pedal for the SAAB servo to compare with the Ford Servo) Then just bolt the Ford Servo and Master Cyl in place, reconnect the pipes, discard the old reservoir, fill and bleed the system and Roberts your fathers brother ... No ?

[greymrj]

Hi Kevin, I found a Ford Sierra set up which appeared to give the same swept volume for the same same pedal movement. BUT; the bulkhead fixing was by two bolts only and the TVR bulkhead isnt rigid enough for that (the TVR has four bolts), it might of course be possible to strengthen the bulkhead. The Ford set up also projected further into the interior which restricts the pedal area available (not sure if that would be crucial though). Finally, the Ford Sierra servo to pedal arrangement is completely different and, given the possible safety issues involved, I didn't fancy re-engineering this. As I said (for some reason I seem to have posted it twice!) I'm sorted but if anybody thinks they have seen a way forward I will try to check it out with my friendly factor.

[GarryGSXR]

Hi Ken, I recently had the same problem with my servo, Have a look on my history this may help you. Cheer's Garry

[kenpage]

does anybody want me to measure the fork on my old servo and photo it?

[Barkychoc]

I have an XR2i servo thats off the car - I could measure that if it is easier.

Chris

[kenpage]

im ok i got another the same as mine without the holes i was just going to photo the relevent parts for anybody to use as a reference if they need to mod to another type

[kenpage]

photos on http://kenpage.myphotoalbum.com/view_album.php?set...

[Barkychoc]

Is this a possibility if someone needs one?

http://cgi.ebay.co.uk/ford-FIESTA-XR2I-RS1800-RS-t...

[ketvrin]

Barkychoc said:

Is this a possibility if someone needs one?

http://cgi.ebay.co.uk/ford-FIESTA-XR2I-RS1800-RS-t...

He's also listing the master cylinder ...

K

[ketvrin]

Saab 9000 Master Cylinder anyone ?

http://cgi.ebay.co.uk/Saab-9000-Brake-Master-Cylin...

http://cgi.ebay.co.uk/SAAB-9000-CS-CSE-CD-BRAKE-MA...

Edited by ketvrin on Friday 29th February 10:18

[Elfit]

Thanks for trying Kev but I don't think that it is the same one.

I've been doing some hunting and got an email from that guy this morning to say that a non abs saab 9000 is very rare and he didn't have any bits for one.

If I can work the technology this is a pic of mine:

[ketvrin]

Hi Tim I wasnt sure what yours was as I couldnt remember from the other night...

take a look at this thread too

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

I'm sure Graham will know more if asked...

K