Turbo brake conversion

KaDuWin · 02-19-2009, 04:42 PM

I have a 91 NA with 129,000 miles on the original front calipers, I was wondering does anyone know if, I can just install turbo calipers on my car or do I have to modify it? Is it a simple plug and play? Do I have to upgrade the master cylinder, brake lines?

If I upgrade the front, would you recommend that I upgrade the rear in order to keep the car more balanced under heavy braking? Thanks for your time.

TomsMR2 · 02-19-2009, 06:02 PM

you can just install them.. you have to put the turbo mc on too, as well as the proportioning valve.

i did, really makes zero difference anywhere except a track where you can get some heat into them.

91t's use the same rear brakes as na's.

KaDuWin · 02-19-2009, 07:39 PM

Quote:

Originally Posted by TomsMR2

you can just install them.. you have to put the turbo mc on too, as well as the proportioning valve.

i did, really makes zero difference anywhere except a track where you can get some heat into them.

91t's use the same rear brakes as na's.

Is the master cylinder or the proportioning valve expensive to buy or long/hard to install? I probably wouldn't be doing the work myself, only because I don't have the time to install and its like 25 degrees outside right now. Thanks for your help.

Everett · 02-19-2009, 08:57 PM

I did this a few years ago on my NA. I just bought the calipers and mounting brackets. They swapped out with no problems or issues. You may want to make sure that the turbo calipers are from a 91-92 b/c the 93+ may be different.

KaDuWin · 02-19-2009, 09:13 PM

Quote:

Originally Posted by Everett

I did this a few years ago on my NA. I just bought the calipers and mounting brackets. They swapped out with no problems or issues. You may want to make sure that the turbo calipers are from a 91-92 b/c the 93+ may be different.

Awesome thanks I appreciate your help

TomsMR2 · 02-20-2009, 08:02 AM

you NEED the prop valve. the bigger turbo master cylinder helps take up some slack in the pedal travel, but the prop valve keeps your brakes getting the correct percentage of power. turbo calipers with an na prop valve makes your rear bias too strong. you end up stopping SLOWER.

adding turbo front calipers without the prop valve, is in every way, a downgrade.

on the street, daily.. you wont notice. but if you're doing "performance" brake upgrades, dont you want them to... well.. perform better?

91 turbo prop valves are really cheap.. you could probably grab one for 5 or 10 bucks from a part out. the 91 turbo setup really is a fantastic setup, but people get waaay ahead of themselves and *think* they need the 93 setup. 99% of the time they dont, so you can pickup really great 91t parts for cheap.. while 93t parts have a huge premium.

the master cylinder isnt so important, but you're gonna want to get one eventually. i used a 4 runner cylinder which is way bigger than a turbo mc. gives great modulation but requires significantly more pedal pressure.

Gairloch · 02-20-2009, 11:40 AM

Don't forget that you'll also need new pads and rotors in front.

If you're really looking for some kind of brake performance upgrade I suggest you look at the Porterfield R4s for street driving.

I||ICIT · 02-28-2009, 01:09 AM

Quote:

Originally Posted by Gairloch

If you're really looking for some kind of brake performance upgrade I suggest you look at the Porterfield R4s for street driving.

Go on....

so, in summary of this thread, for an n/a to turbo brake upgrade:
turbo brake master cylinder.
turbo proportioning valve.
turbo rotors.
turbo calipers and mounting brackets.

new pads and fluid to suit.

anything else?

Everett · 02-28-2009, 02:36 AM

Any idea of what this proportioning valve looks like, or where it located?

countyboy3188 · 02-28-2009, 02:40 AM

Thats all you need. The 91/92 Na and turbo rotors are the same though.

Everett · 02-28-2009, 02:47 AM

Ya, I did the swap with my NA rotors. I just need the valve now. They work fine though.

TomsMR2 · 02-28-2009, 04:55 PM

the prop valve is the small metal thing under the master cylinder. just follow the hardlines from the master, they run right into the prop valve. its small, fits in the palm of your hand.

MANDALAY · 02-28-2009, 09:15 PM

Also you need the right unit wether you ABS

MANDALAY · 02-28-2009, 09:19 PM

I replaced everything on my car when i rebuilt it, so i have everything that you need for an upgrade. Its of a 1999 car N/A 70.000 miles but since we only had one model car here everthing is Turbo spec.
Master cylinder , proportionating valve, resivour, all four calipers. I would just get a refurbishing kit from Toyota for the calipers

Gairloch · 03-01-2009, 12:22 AM

Quote:

Originally Posted by countyboy3188

Thats all you need. The 91/92 Na and turbo rotors are the same though.

Only the rears are the same. The front rotors are larger.

02-19-2009, 04:42 PM	#1 (permalink)
KaDuWin KaDuWin Join Date: Mar 2005 Posts: 163 Thanks: 15 Thanked 6 Times in 6 Posts iTrader Rating: (0/0% )	Turbo brake conversion I have a 91 NA with 129,000 miles on the original front calipers, I was wondering does anyone know if, I can just install turbo calipers on my car or do I have to modify it? Is it a simple plug and play? Do I have to upgrade the master cylinder, brake lines? If I upgrade the front, would you recommend that I upgrade the rear in order to keep the car more balanced under heavy braking? Thanks for your time.

02-19-2009, 06:02 PM	#2 (permalink)
TomsMR2 Still not heraldo. Join Date: Feb 2005 Location: Pineapple under the sea Posts: 4,911 Thanks: 18 Thanked 406 Times in 303 Posts Blog Entries: 1 iTrader Rating: (4/100% )	you can just install them.. you have to put the turbo mc on too, as well as the proportioning valve. i did, really makes zero difference anywhere except a track where you can get some heat into them. 91t's use the same rear brakes as na's. __________________ Science fact: If you took all the veins from your body and laid them end to end, you would die.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

02-19-2009, 08:57 PM	#4 (permalink)
Everett Lovin' the curves! Join Date: Aug 2006 Location: Decatur,IL/Solomons,MD Posts: 1,445 Thanks: 42 Thanked 65 Times in 59 Posts My Google Map iTrader Rating: (7/100% )	I did this a few years ago on my NA. I just bought the calipers and mounting brackets. They swapped out with no problems or issues. You may want to make sure that the turbo calipers are from a 91-92 b/c the 93+ may be different.

02-20-2009, 08:02 AM	#6 (permalink)
TomsMR2 Still not heraldo. Join Date: Feb 2005 Location: Pineapple under the sea Posts: 4,911 Thanks: 18 Thanked 406 Times in 303 Posts Blog Entries: 1 iTrader Rating: (4/100% )	you NEED the prop valve. the bigger turbo master cylinder helps take up some slack in the pedal travel, but the prop valve keeps your brakes getting the correct percentage of power. turbo calipers with an na prop valve makes your rear bias too strong. you end up stopping SLOWER. adding turbo front calipers without the prop valve, is in every way, a downgrade. on the street, daily.. you wont notice. but if you're doing "performance" brake upgrades, dont you want them to... well.. perform better? 91 turbo prop valves are really cheap.. you could probably grab one for 5 or 10 bucks from a part out. the 91 turbo setup really is a fantastic setup, but people get waaay ahead of themselves and think they need the 93 setup. 99% of the time they dont, so you can pickup really great 91t parts for cheap.. while 93t parts have a huge premium. the master cylinder isnt so important, but you're gonna want to get one eventually. i used a 4 runner cylinder which is way bigger than a turbo mc. gives great modulation but requires significantly more pedal pressure.

02-20-2009, 11:40 AM	#7 (permalink)
Gairloch Dreaming of apexes Join Date: Aug 2005 Location: Minneapolis, MN Posts: 5,313 Thanks: 139 Thanked 296 Times in 264 Posts Blog Entries: 4 My Google Map iTrader Rating: (7/100% )	Don't forget that you'll also need new pads and rotors in front. If you're really looking for some kind of brake performance upgrade I suggest you look at the Porterfield R4s for street driving.

02-28-2009, 02:36 AM	#9 (permalink)
Everett Lovin' the curves! Join Date: Aug 2006 Location: Decatur,IL/Solomons,MD Posts: 1,445 Thanks: 42 Thanked 65 Times in 59 Posts My Google Map iTrader Rating: (7/100% )	Any idea of what this proportioning valve looks like, or where it located?

02-28-2009, 02:40 AM	#10 (permalink)
countyboy3188 got boost?? Join Date: May 2007 Location: Buchanan,GA Posts: 511 Thanks: 16 Thanked 8 Times in 8 Posts My Google Map iTrader Rating: (6/100% )	Thats all you need. The 91/92 Na and turbo rotors are the same though.

02-28-2009, 02:47 AM	#11 (permalink)
Everett Lovin' the curves! Join Date: Aug 2006 Location: Decatur,IL/Solomons,MD Posts: 1,445 Thanks: 42 Thanked 65 Times in 59 Posts My Google Map iTrader Rating: (7/100% )	Ya, I did the swap with my NA rotors. I just need the valve now. They work fine though.

02-28-2009, 04:55 PM	#12 (permalink)
TomsMR2 Still not heraldo. Join Date: Feb 2005 Location: Pineapple under the sea Posts: 4,911 Thanks: 18 Thanked 406 Times in 303 Posts Blog Entries: 1 iTrader Rating: (4/100% )	the prop valve is the small metal thing under the master cylinder. just follow the hardlines from the master, they run right into the prop valve. its small, fits in the palm of your hand.

02-28-2009, 09:15 PM	#13 (permalink)
MANDALAY Beams Owners Group Join Date: Feb 2007 Location: victoria AUSTRALIA Posts: 4,210 Thanks: 136 Thanked 112 Times in 107 Posts My Google Map iTrader Rating: (6/100% )	Also you need the right unit wether you ABS

02-28-2009, 09:19 PM	#14 (permalink)
MANDALAY Beams Owners Group Join Date: Feb 2007 Location: victoria AUSTRALIA Posts: 4,210 Thanks: 136 Thanked 112 Times in 107 Posts My Google Map iTrader Rating: (6/100% )	I replaced everything on my car when i rebuilt it, so i have everything that you need for an upgrade. Its of a 1999 car N/A 70.000 miles but since we only had one model car here everthing is Turbo spec. Master cylinder , proportionating valve, resivour, all four calipers. I would just get a refurbishing kit from Toyota for the calipers