brakes Fun Fact for the tii and dual-sidedraft guys

[danco_]

Tii's are getting old. Hell, even the youngest US-spec tii has been on the road for 42 years, and parts are neither cheap, nor plentiful anymore. 

 

Brake boosters don't go bad often, but when they do, they will cost anywhere between $400-$700 if you can source one (these are often used prices).

 

A potential solution to finding a decent booster, while you consider rebuilding your original, would come from a early to mid-80s Alfa Romeo GTV-6. ATE shows the same part numbers for both the tii booster, and the GTV-6 booster. I do believe you have to shave down the shaft that connects the booster to the master cylinder about 1/8" to get it fitting correctly, but that is very easy in the grand scheme of things. The gtv-6 boosters can be had for cheaper than tii boosters at this time.

 

I wish I could be more specific about the modification and the part numbers, but I don't have the details in front of me. 

 

 

None of this information is new, but I figured with so many new tii owners over the last five years, it's good to brush up on a little insider knowledge from time to time. 

 

 

 

 

 

xoxo,

Ryan

[TobyB]

I think I posted this back when I was lapping with the Alfa guys.... 2002, maybe?

 

Also, isn't there a SmartCar booster that's pretty close?

 

t

 

[Harv]

Volvo P1800 ES boosters are the same too. I think there is a similar Mercedes booster but I'm sure it's more expensive. 

 

John

[conkitchen]

53 minutes ago, danco_ said:

 

.... with so many new tii owners over the last five years, 

 

Another trivial thing, tii brake masters are more expensive than regular 2002 units. If you happen to relocate your battery to the trunk, one can use the regular master since it won't run into the now gone battery. 

 

But what do I know. 

[jrhone]

1 hour ago, conkitchen said:

 

Another trivial thing, tii brake masters are more expensive than regular 2002 units. If you happen to relocate your battery to the trunk, one can use the regular master since it won't run into the now gone battery. 

 

But what do I know. 

 

I thought the appeal of the Tii booster for sidedrafts was for he width, not the length. It gives you more room for the carbs at the expense of a smaller battery area. This area is also needed fir the Tii fuel injection intakes. So moving the battery will have no bearing on the space the intake needs for a Tii or for some sidedraft air filters. 

[zinz]

That is very interesting news... Wish I'd known about that sooner.

 

Ed

[conkitchen]

1 hour ago, jrhone said:

 

I thought the appeal of the Tii booster for sidedrafts was for he width, not the length. It gives you more room for the carbs at the expense of a smaller battery area. This area is also needed fir the Tii fuel injection intakes. So moving the battery will have no bearing on the space the intake needs for a Tii or for some sidedraft air filters. 

This is true for the booster. The master is the thingy them brakes lines screw into. Tii "masters" are shorter in length cause that darn battery gets in the way. 

 

But I could be wrong

[xferboy]

Hey all, just a little deviation from the whole booster/master thing:  Has anyone done a booster-less setup?  Either standard, or multiple ?

 

I thought Massive brakes had a dual master for an e30, but can't find it now.

 

If someone has, could they share parts#/ideas/setup/etc?

 

thanks

 

Allan

[conkitchen]

2 hours ago, xferboy said:

Hey all, just a little deviation from the whole booster/master thing: 

 

Allan

Allan,

 

You need a pair of tii air filter brackets? 

Edited August 25, 2016 by conkitchen

[LarsAlpina]

4 hours ago, conkitchen said:

Tii "masters" are shorter in length cause that darn battery gets in the way.

 

Did you ever happen to measure how much the difference in length is?

 

Best regards, Lars.

[halboyles]

Just a quick sampling of the units on the shelf gives 163mm for the ti/tii/early 6-cylinder MCs and 158 for the standard 2002 MC.  Not really that much difference.

[halboyles]

Those measurements are reversed:  should be 158mm for the ti/tii and 163mm for the standard MC

[jrhone]

12 hours ago, conkitchen said:

This is true for the booster. The master is the thingy them brakes lines screw into. Tii "masters" are shorter in length cause that darn battery gets in the way. 

 

But I could be wrong

 

Ahhh my mistake. I didn't see you were talking about masters. My bad. My standard master on my Tii booster leaves enough room for the smaller Tii sized battery up front. That's what I'm running. Not sure there are not other clearance issues on a Tii. 

[LimeySteve]

10 hours ago, xferboy said:

Hey all, just a little deviation from the whole booster/master thing:  Has anyone done a booster-less setup?  Either standard, or multiple ?

 

I thought Massive brakes had a dual master for an e30, but can't find it now.

 

If someone has, could they share parts#/ideas/setup/etc?

 

thanks

 

Allan

I run boosterless, I made an adapter to replace the booster ( a flanged tube ) then I extended my brake pedal to get a decent ratio all's good , I run cooling tubes to the backing plates from the holes in my IE spoiler & even on the track she stops great , good leg muscle exerciser too

[TobyB]

There are a couple of E30 masters- the early 318i has a particularly interesting one, with a slightly stepped bore. (19.05/20.64)

The late 325 has a very booooring one with a 17.46/22.20 stepped bore.  Then there's the standard 20.64  bore.

 

20.64mm, or 13/16" (yep, the bore's SAE)  is also what the 2002 normally came with, and the tii got 23.81, or 15/16"

 

Think I've mastered that one, huh?

 

hee

 

t