Vacuum brake conversion ?

[QuikBuik]

Well, after owning an 87 T (my first TR) for all of a week and a half, I had the lovely 'brake' light come on in the middle of town yesterday, and shortly thereafter, had to manhandle the brakes all the way home, in the rain no less. Smelled like the motor was burnt, but I was so frustrated I haven't even took the time to see if the fuse is blown.

Anyway, since my wife may drive this car some too, I just can't take the chance of the PM unit failing, so it'll probably be swapped to vacuum. I've did some searching and checked out gnttype.org, but I still have a question or 2.

How do you tap and route the vacuum line to the booster? Like I said earlier, I don't want to chance any failures so I want to do it right the first time. Basically I don't want to damage any valves or seals under boost. What kind of check valves are you using? I saw somewhere about a vacuum block for the TTA, could someone go into detail about that? Is that something I need to go along with a check valve?

Thanks for any help.

 

[Kevin Turch]

I used a vacume block from a TTA, ran my vacume hose to the check valve on the booster, only new thing i bought when i converted was the pedal and the check valve. I did it all for under 100 bucks.
HTH
Kevin

 

[Dan Thompson]

I saw a setup that had a Tee in the PCV line. It looked stock, unlike the big hose coming out of the vaccum block.

I am still running the PM but have thought about changing out also.

 

[granitestategn]

I tee'd into the PCV line when I converted to vacuum brakes recently. I just purchased the vacuum block for a TTA a couple weeks ago and Iam going to move it this weekend if I get the block installed. I bought a remanufactured booster (dual diaphragm) and a remanufactured master cylinder, both lifetime warranty. The booster came with the check valve. The only part from a junkyard was the pedal. Total cost was under $150.

 

[Dan Thompson]

granitestategn

Was there something wrong with using the 'TEE' over the TTA vaccum block?

 

[granitestategn]

Dan

I haven't had any problems with it. Took the car to the track and it stopped fine. My install looks kinda messy though. Just thought I'd clean it up a little. I was going to do the vacuum block anyway. I have too many things tapped into the PCV line. That's where I've got my boost gauge tied in right now, too. I think I might grab the boost off of the vacuum line going to the brakes after I move it. It would be a really short run then.

 

[QuikBuik]

Thanks guys for all your input. Could someone go into a little more depth about the vacuum block, like cost, where it goes, benefits over just the tee into the PCV, etc.

Thanks again

 

[ghall]

Got to this add.--------follow this link https://www.kirbanperformance.com/index1.htm
Then to the link marked---"engine parts"-----go to second page --item 6797---vac. block with extra port.

Geoff

 

[QuikBuik]

Ahh haaa.....Thanks Geoff!

Tim