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Folks, I am trying to confirm if my brother in law has been sold what he needs.

We are in the middle of a brake upgrade on his R31 track car. We are going to R33 GTS-T gear all around (A huge improvement on stock Australian R31 stuff)

He has bought an R33 booster and master cylinder off ebay which was listed as coming from a non ABS R33 GTS-T, but it only has two ports. Can I confirm if the R33 had two ports on the cylinder and a splitter block in the lines be split to the front wheels? The cylinder has what looks like a bias valve cast into the housing, but my sister's S15 looks the same and it has ABS fitted. I was under the impression that ABS cars had two ports and non ABS had three.

I am not all that worried about it is it does prove to be an ABS cylinder with no bias valve as we will just plumb in an adjustable one in the cabin if that is the case. I just need to confirm what he actually has.

Aside from that, does anyone have a part number handy for a seal kit for the BM44? It is in good apparent condition but I would prefer to replace the seals before I put it on the track.

Google'd quickly at work, slow day..

BM44 Seal kit;
Nabco part number KPB2994X

I am also under the impression that the ABS cars only have 2 ports whereas the non ABS have 3, but I'm not confident enough to give you a straight up answer :unsure:

Ta, that is what I thought, it was sold as a non ABS cylinder but Dan who owns the car would not know the difference, the main thing was to get the Japanese booster so that we have the correct bolt pattern. Aus R31 has the master cylinder flange bolts at an angle where Japanese ones are horizontal, going to a JDM booster lets us use bigger master cylinders without as much stuffing around.

No difference to me it being an ABS cylinder, we will just fit an external prop valve in the cabin. It is a track only car so no legality to worry about and it is not going to be set up the same as the donor car so bias tweaks are almost certain to be needed to get the best out of it.

I am seriously looking at a bias box and twin cylinders on my own car so we might even pinch my master cylinder (Bigger again, 17/16" off a Navara) and bias valve to get Dan's car on the track as my car is off-track for a few months for a tidy up.

Edited by Blue

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