Need help sourcing 3/4" clutch master cylinder

[Evilempire1.3JZ-GTE]

:1zhelp:

I am looking for a direct bolt on replacement 3/4" clutch master cylinder to drive a tilton clutch release bearing for a multiplate clutch setup.

I perfer Aluminum like the supra most cylinders went that route after 90.

Possibilities I have found is the 1987 V6 4.2ltr landcruiser it claimes to have used the same cylinder type but steel body.

I think the 1992 V6 SR5 4X4 4runner might have had one also?
Its an aluminum body and it might be a 3/4" bore but I am hoping someone here might know more then me on this topic.

I hope to find a replacement since my 5/8" bore wont do.

 

[Slow66]

Maybe try calling Spec and see what the specs are on the MC they include with their twin disc clutch. I tried to see if they had specs of it on their page but didnt come across any. I suppose its worth a shot....unless youre dead set on using a toyota one.

 

[BftSupra]

The one spec uses is from Wilwood. It's listed on the Wilwood site and can be bought from jegs, summit, etc. It comes in several bore sizes. The bolt holes are vertical and you will need an adaptor to make it bolt into the supra, use the spec pic as a guide.

You want the larger bore so that the pedal will have less travel to engage? I am looking at this as a way to get my clutch engagement point up off the floor. As it is now, it is about 2" off the floor and sometimes sinks lower if I hold the clutch down at a light. The unpredictability and the RPS 3200# pressure plate make my car kind of unpleasant to drive in traffic sometimes.

 

[tsuper92]

i have the spec master(wildwood) and it over extend's the release bearing.i'm not a fan of having the low pedal and would rather have it a little higher
here's a pic.you can see the addapter attached to it.