Houston we've got a problem..

[R.O.R-2.0]

Crap. I have a 98 MC from a jetta.. Any chance I can use it??

in a mk2 with 2 brake lines its a direct bolt in swap.. in a mk1.. no such luck..

only MC ive seen that swaps in a mk1, is the MC out of an early mk2 non GTI/GLI car..

[8v-of-fury]

That's good news. So the 98 mc will fit a 90 no problem? Sweet thanks k3vo.

[rabbitman]

That's good news. So the 98 mc will fit a 90 no problem? Sweet thanks k3vo.

Look at it and see

[8v-of-fury]

Well duh, lol .

I have neither out of either car so I can't physically look at anything yet. I have never dealt with master cylinders, so I figured it was better to ask on here then go through more b.s taking it from the parts car.

[lovinthedeez]

why I don't like mk2 rear discs....my own personal failure, whilst bringing the fam to the airport......four days before christmas
http://forums.vwvortex.com/showthread.php?4686947-one-crub-too-fentz-and-one-crappy-mk2%28finally-I-FAILED%29

[R.O.R-2.0]

That's good news. So the 98 mc will fit a 90 no problem? Sweet thanks k3vo.

as long as your 90 has 2 brake lines off the MC.. my 92 has 4 lines off the MC tho. its probably different. just look and see. the reservoirs are different, but the round one works in place of the square one..

[8v-of-fury]

hmm weird that you say 2 brake lines will work.. When Both the 90 and 98 are 4 brake lines? Got the MC in with no effort, or b.s.. then it came time to bleed the fronts... GODDAMN BLEEDER SCREWS WERE RIGHT DINKED. Like JFC, this car is going to the damn crusher i sware.

[R.O.R-2.0]

the mk3 res i have on my 85, has 2 brake lines coming off the MC. my 86 has 4 brake lies off the MC tho..

[8v-of-fury]

So how does one extract a broken bleeder screw from a caliper?

[ORCoaster]

Tiny Easy out or drill  very carefully and clean with a tap.  I hate this repair.  At one point I just bought a second cylinder as it was faster and less painful. 

[Vincent Waldon]

They also make "bleed screw repair kits" that let you just drill out the broken bleeder with a bigger drill, tap the bigger hole, then install a new steel insert with a fresh bleeder. 

Princess Auto has 'em for example:

http://www.princessauto.com/workshop/hand-tools/automotive-tools/auto-repair/8237950-bleeder-screw-repair-kit

(tap and drill sold separately)

Note: never used 'em... just read about 'em.    Always just figure that if the bleed screw was rusted in the caliper is trying to tell me something.  ;-)

[8v-of-fury]

Those almost look like they'd be the exact same size as the bleeder screw I'm working with on the front caliper.

I hear you vince, but no time or money for new calipers.. and other than the bleeder being fubar'd the caliper is in great shape other wise.

[R.O.R-2.0]

Those almost look like they'd be the exact same size as the bleeder screw I'm working with on the front caliper.

I hear you vince, but no time or money for new calipers.. and other than the bleeder being fubar'd the caliper is in great shape other wise.

i broke the bleeder off the front caliper on my GTI, and i just loosened the banjo bolt on the line and bled the brakes that way.. it was the front left side, closest to the master cylinder..

[Runt]

Those almost look like they'd be the exact same size as the bleeder screw I'm working with on the front caliper.

I hear you vince, but no time or money for new calipers.. and other than the bleeder being fubar'd the caliper is in great shape other wise.

i broke the bleeder off the front caliper on my GTI, and i just loosened the banjo bolt on the line and bled the brakes that way.. it was the front left side, closest to the master cylinder..

I've done the same more than once, most recently on the right front of my jetta.  Sometimes it's a little harder and takes a bit longer than doing ut right, as the fluid needs to 'dribble' into the caliper and the air has to sort of bubble back up, but it does work just fine on an otherwise serviceable caliper.  At least in a pinch.
One way to remove the bleeder, if there is at least a little sticking up from the caliper body, is to use an oxy/acetylene torch to heat the bleeder red hot, try not to heat the rest of the caliper, let cool slightly and then spray with penetrating oil (carefully, as the first squirt or two will smoke, fume, and quite possibly flash up into flames.  just keep spraying.)  spray intermittently until coolish, repeat, but this time try to remove the bleeder while hot after the first spray that does not flash off.

[CRSMP5]

future tip.. alwaysplan to replace wheel cylnders.. ive never had luck with using old ones.. they tend to spring a leak and ruin all my hard work with in 6mo..