the height is the same as a 1200 master cylinder for all the tokico master cylinders

Yeah im pretty sure they are rolled threads, havent had a look at one for a while

have you checked the brackets with a sunny booster for fitment into a 1200?

B310 has horizontal bolt-pattern master cylinder
Booster M60


B210 has vertical bolt-pattern master cylinder
Booster M45

See B210 Brake Booster

DD, both have a pair of short horizontal studs and long verticle studs coming out the front

both run a spacer between the master and booster that bolts onto the horizontal studs then the booster bolts onto the verticle studs

Hey Bart, hope things are going okay over your way.

Yes these are the thickness of the alloy mount that you typically see between the master and firewall.

The EOI hasn't gone up yet but the 1000 lads know about this as I mentioned these on datsun1000.com. I'll get a thread up soon.

At the moment these will probably be stainless steel or alloy along with a cheaper mild steel option. I am unsure of the costs at the moment but will know when I get it on the way.

Here's one a club member made:


B210 Booster

Things are going as well as can be expected. (okay, but not great)

I think made from 3mm mild steel, from laser cut plates, and TIG welded together. And then zinc plated in silver or gold could almost look like a factory part. Plus the addition of a booster would easliy enable the fitemnt of a larger MC, without making the pedal too heavy.

Hey thanks for that dd, yeah that one does the job but my design is to be a bolt up assembly for my 1000, that picture you showed has the studs welded to the flange that meets the firewall.

I don't know how you are supposed to screw them into the threads into the firewall?

Who made that one? did it work?

Bart, I am going for the mild steel electroplated style, the stainless and ally is kinda for the option really...after-all it's only a bracket.

it wont fit 120y booster
120y booster has about 50mm long studs
with about 15mm of thred on the end

Sure does come with the long studs. But can you remove them and replace with shorter manifold studs? or use short bolts?

Yep.

thort studs were welded into booster??

Hey Tommo,

I'm not sure I have one here with short studs and a 120y one with the long studs, I tried to remove them but they're quite tight. I think the studs will have to be cut shorter and then tapped.

Unless I have a Sunny one which Andy reckons are the short stud. Either way the brackets are going ahead, I might leave it up to the individuals to solve that issue.

EDIT: You're spot on Andy, here is a pic of one:

yeah thats my one pictures with a sunny booster, slightly larger than a 120y one...probably more than slightly

neither 120y or 180b have short studs and you wont be able to tap more thread on from memory as the studs go undersized, the only small booster than would have short studs is the nissan patrol or gtr skyline clutch booster which i dont think anyone has used yet but looks to be a 120y style one and the master cylinder mounts look the right spacing

mine has fixed studs as that was easier than having a bolt and a nut, as all you have to do on a 1200 is knock the standard master cylinder studs out and then you have nice holes to put those studs on the bracket through

you do have to enlarge the hole in the firewall though so that the booster pushrod can fit through as its pretty big and i wanted the boster to be as close to the firewall as possible

works great and was only somthing i knocked up in a half a day out of a master cylinder spacer a bit of plate adn a bit of pipe to get the booster in there. still needed to knock a bit of a dent in the strut tower in a 1200 for it to be able to get it in and out though

currently have an r33 master cylinder on my sunny booster to match the brakes

EDIT: was running a 7/8th master unboosted before this with 4 piston front and single piston disc rear. wasnt too bad till i went to the larger 4 piston front and twin piston rears. so anything smaller should be fine without a booster really

This is mine in the car, as you can see in a 1200 if it was any further forward you would have about 0% chance of getting it in there. as its actually quite a bit larger than the 120y one. bit still smallish

Thats interesting. So the threads are rolled onto the 120Y/180B studs, leaving them with a smaller diameter that the OD of an M8 thread?
Perhaps they could be threaded 5/16 instead?

new there was a reason u couldnt
recut the threds.

If there is something made to go under the dash of the 1000
so I can hide the master cylinder like Tommo has Id be in.
Then you can run an external booster like that on valiants.