JMC hydraulic clutch and Power brakes.?

c24sc · Feb 19, 2009

Hey Guys,
Lookings to do the jmc hydraulic clutch on my resto '66, but couldn't confirm by looking at other installs, if you can run a brake booster (ssbc power brakes and booster) and the jmc clutch cylinder. Will they both fit? Or will it not work with the power brake booster (not plannin on going back taking the booster off).

Thanks,
Nate

BarnStang · Feb 19, 2009

Do you already have your hyd clutch kit? Cause JMC is gone.
You can run power brakes depending on how you install the clutch hyd master cyl. Here are some links...
Create a Custom Hydraulic Clutch System for T

There are additional links inside the article.

68GT500KR_Vert · Feb 19, 2009

CNC who made the parts for them are still around.

CNC, Inc. - Manufacturers of Quality Pedals and Brake Components

68EFIvert · Feb 20, 2009

I have a JMC hydraulic clutch and an original style Midland booster I purchased off Ebay from Chockostang. It works great and there are not interference problems.

dcstang67 · Feb 20, 2009

I have a CNC 3/4" Master for my clutch and running the original style Midland booster and there is plenty of room. Just plan on removing the brake booster to gain some room to install the clutch master.

DK832 · Feb 21, 2009

BTW, now that JMC is not making the kit and we have to buy individual components from CNC, I wonder if ppl are aware of Tilton: Tilton Engineering Doesn't get much better than that.

10secgoal · Feb 22, 2009

65-66 are much different than the 67-69 stuff in regards to the Booster to MC closeness. 65-66 are much closer. I have gotten them to fit. Not sure if it's a SSBC booster or not. But I have to slightly modify the bottom of the pivot point to get it to clear. Cut the head of the pin and weld it in flush to get it to clear.

mdjay · Feb 22, 2009

The bellcrank style brake boosters will fit the with the hydraulic clutch master.

ie PBC-M1, 2, 3 etc.

Some of the CNC masters were custom made for JMC at a slight angle. We are reproducing the kit but CNC won't do the custom angle for us, so we're making a shim to angle it.

Should be out soon...

68EFIvert · Feb 22, 2009

Way to step up to the plate Jay. I am sure you will get a lot of business out of the shim. Will you sell it individually or just in a kit?

mdjay · Feb 22, 2009

Not really sure yet.

10secgoal · Feb 23, 2009

mdjay said:
The bellcrank style brake boosters will fit the with the hydraulic clutch master.

ie PBC-M1, 2, 3 etc.

Some of the CNC masters were custom made for JMC at a slight angle. We are reproducing the kit but CNC won't do the custom angle for us, so we're making a shim to angle it.

Should be out soon...

Really ? They had 60 on the shelf that Jon left them with they were willing to sell. We were going to buy them but decided not to because they wouldn't sell them to just us. Wasn't going to invest all that money to just have a bunch of other people competing for the same thing. that and the phones ring too much now. Didn't want to explain the bleed process every day.

cougorama · Mar 8, 2009

It looks like Mustangs Plus has some JMC hydraulic kits left, but they're selling them as part of a whole t5 swap kit.

Mustangs Plus :: EFI & T-5 Conversions :: T-5 Hydraulic Clutch Kits :: 1967-70 RMP T-5 Conversion Kit, Late Model Bell Housing

I'm looking to put a t5 in my '67 cougar, which has power brakes. Reading this post, it looks like the JMC kit should work, so I'll probably go with the Mustangs Plus kit. The price seems pretty reasonable considering it has a lot of the stuff I'm going to need to get.

joesgt281 · Sep 25, 2009

mdjay said:
The bellcrank style brake boosters will fit the with the hydraulic clutch master.

ie PBC-M1, 2, 3 etc.

Some of the CNC masters were custom made for JMC at a slight angle. We are reproducing the kit but CNC won't do the custom angle for us, so we're making a shim to angle it.

Should be out soon...

Jay,
I'm doing a T5 conversion in my 67 with power brakes.
Is this the shim you were referring to?

I've got a Midland clamp-type booster on mine.
So what I'm gathering is that this will angle the master cylinder in such a way that it clears the booster, presuming that I use this style with a remote reservoir?
View attachment 244566
If so, and it's angled down, then I guess the rod to engage it to the clutch pedal will have to be at the same angle. Should I then just drill a new hole in the clutch pedal that is at the projected line of the MC to attach a rod to it?
Thanks

mdjay · Sep 25, 2009

Yes that is the shim for the master you have showing.

The bellcrank booster would clear the master even if it wasn't shimmed. This shim it to get the correct angle on the clutch push rod to eliminate side shear and in turn premature failure of the clutch master. There's no way to run a straight shot at the master with a straight rod because the column gets in the way. You use the original hole.

Yes we've come out with complete bracket systems for the cnc master and slave. The shim is available separately for those with the original JMC kit using the master shown. These were originally welded with an angle for these kits.
Tremec Brackets

T5 Brackets

Jay

joesgt281 · Sep 25, 2009

ok this pic almost answers my question above:

it addresses the alignment of the MC with it's actuating rod.
now I guess the rest is just hoping it's enough of an angle to clear the booster.

mdjay · Sep 25, 2009

BTW You still need the bellcrank style booster!

joesgt281 · Sep 25, 2009

Ok, you answered that question to, LOL
Thanks!

mdjay · Sep 25, 2009

I think it was already mentioned, but any of the PBC-M.* will work.

The entire booster is pushed up about an inch or so. But the stock export bracket needs to be removed for operation. You can run an aftermarket one in it's place.

Jay

Markus · Sep 26, 2009

This is my jmc setup with a fox booster.....

Markus

joesgt281 · Sep 26, 2009

Great pics Markus.
I've got the clamp-style Midland booster:

I understand that this is the same diameter (7") as the Fox booster like you have.
It looks tight, but do-able.
Thanks alot for your input.
I've not seen pics like you provided and something like that is invaluable.

JMC hydraulic clutch and Power brakes.?

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