WTF...this is the second one I've got that has done this in the last 4 years. It's leaking out the little port on the side of the master cylinder. I see no point to this unless it's an indication of one of the internal seals gone/going. Has anyone else had this issue? Anyone recommend a good place to source a replacement MC, and don't say coz, RHD and LHD are different.
How hard would it be to fit a generic one? I've been looking at brake stuff a bit to remove my ABS and there are heaps of good generic ones available.
Yeah, definitely easier to stay with standard if you can. Probably worth hitting up a Nissan parts place witha part number, they probably used the same one in other cars too. Was the one that died most recently new or used? They could be coming to the end of their lifespan. Wilwood master cylinders are not much over $100 so it might be worth the hassle if you can't find new stock ones.
Brand new, bought it 3 years ago. The one on there was original, and had exactly the same problem. I just had a look at the wilwood site, and found these Clicky which could fit the bill...I'm just going to have to measure the mounting bolts to ensure minimal fab work if any and would suit well I think being that I am 99% sure I'm going with the wilwood SLR6 kit, and these MC's suit. Also they used the same MC in the skyrine gtr, R32 and R33.
I liked the look of that one too, probably not much point in a remote reservoir in a Z32. Also, how does the SLR6 compare to the Wilwood Prolite P6R set up?
Sorry, I meant P6R. I also meant STR6. Been looking at both, and for the short circuit, short stints that we do, the STR6 won't outperform the P6R, they're more for endurance racing. I'm likely going to get the P6R 14" kit for the fronts, and a rear kit from them as well. And I've just asked for a cost and shipping quote for the MC.
some skylines did use a BM57 (early Z32) and BM50 (late z32) but you'd also need to double check if the internal proportioning valve in the mcyl has the same split point and reducing rate as the Z32's. I'd assume they'd be different due to the different weight distributions so it's better to stay with one from a Z32. you can get a non ABS master cyl from a Z32 (BM44). They are rare as not many don't have ABS as I think it was only an option for the first year on NA's then became standard (I know that Billy, evan and myself don't have ABS and we all have 89/early 90 model NA). Billy may still have mcyl off his wreck. As far as I know the early Z32 ABS mcyl (BM57) has the same proportioning valve as the BM44 (498psi split and 0.4 reducing rate). difference is non-ABS mcyl has 3 outlets (2 front, 1 rear) whereas BM57 has 2 outlets (1 front, 1 rear) and the BM57 has a larger bore (17/16" vs 15/16" for the BM44). Have read on other forums that you can use the BM57 ABS mcyl and just tee off the front outlet to have separate lines for each front wheel or sometimes there is a casting spot where you can drill and tap another port for separated front outlets. Then you can just run new brake lines to each wheel.
I'd forgotten you had a non-ABS car, what are your thoughts on de-ABSing a car? Initially I was keen on pulling out all the hardlines and starting from scratch with the standard ABS master cylinder and a bias adjuster mounted somewhere near it but then I found this which looks like it would mount up perfectly in the same spot the ABS unit was: Also, sorry for the hijack Andy.
Don't bother with a new one. Take your existing one to a local brake/clutch mob and have it fitted with a stainless steel sleave, and a new seal kit to suit. Should cost under $100 (mine did 6 years ago). You'll find it will then outlast the rest of the car.
I think I'll be doing this ... when you say seal kit you mean this? http://www.z1motorsports.com/product_info.php?products_id=720
I personally didn't use that one (my brake/clutch mob fitted one internally before giving the completed unit back to me). But being the fact that it's designed for an adjusted bore size, i'm assuming it's resized to suit sleaved bores. (i can't vouch for this particular internal bore size difference though as i haven't used this exact product). If only Mr Nissan made S/S OEM brake & clutch cylinders back in the day!
the pedal feel is supposed to be better with a non-ABS car but I haven't really compared mine to another zed and there are too many other variables. a few of my friends who have pulled out the ABS from their track cars (skylines etc) have regretted it after they started flat spotting expensive tyres. it really depends on what brakes you are going to run in your car, the ABS calibration is done for stock brakes. the different bore diameter would be because that kit is for the BM50 mcyl (1" bore). nissan used 3 different mcyls for our car (possibly more as I don't know what they did after '96 and someone said they upgraded again for the last series): bm-44 (non ABS 15/16" bore while ABS was optional in the first year) bm-57 (ABS from 17/16" bore from 89 to '91 I think) bm-50 (ABS 1" bore from '91 onwards). if you are buying a kit you need to check the side of your mcyl, it should have BM44/BM50/BM57 cast into it. Oh and nissan made it more confusing by having 2 suppliers, Nabco and tokico (should also be cast on the side). From what my first mechanic told me, you can't get rebuild kits for the Tokico BM57 from Nissan anymore.
Welllllllllll,,, if you know a reasonably switched on brake place, they can have the bores enlarged accordingly and SS sleeves fitted. It wont cure the odd leaking seal but it will prevent pitting in the bores from corrosion. However ABS should do nothing to aid braking effort apart from preventing lockups so the brakes should work as well as they did before the ABS was removed. Im tending to think that Andy is unlucky rather than there being an issue with these MC's. There is nothing funky or secret about there design and id suggest possibly a dodgey assembly in the first place and one of the seals being nicked somewhere has causes the issues. L8r E
Yeah, I reckon so Leaking from that port is an indicator that fluid is leaking past the front plunger. If it leaks from the back of the MC where it joins the booster then the rear plunger is leaking. If the wilwood mounting points don't add up then I'll get mine rebuilt. Although I never like rebuilding things like MC's, I prefer new parts.
Just a spanner into the mix. Mandas zed is a 92 model and hasnt got ABS. Its a 2+0, na, auto. Ive always wondered if its been tinkered with, with the abs system being removed. But upon inspection, nothing seems tampered with or modified/removed. I compared my old zed (90, 2+0, na, auto with ABS) to it, and nothing matched. Not sure what the go is there, but its something different to what was mentioned above. Not that its entirely valid to this convi anyways.
80mm for the BM-57 (nissan MC), 81.3mm for the Wilwood MC. I think I'll order the wilwood piece, just to be different.
4 Years isnt long at all ~ Do you have a brake master cylinder brace fitted? (The BMC needs to flex a tad, and I reckon the addition of a brace puts to much stress on it.)
