Cheap Proportioning Valve Upgrade
#302
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Re: Cheap Proportioning Valve Upgrade
Anyone have any extra springs left? Need one for a drum to LT1 disc swap....
#303
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Re: Cheap Proportioning Valve Upgrade
I am going to Grainger in the AM and getting a pack of 5 i think. i will have 3 leftover 22lb spring pm me if you would like one.
#305
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Has anyone tried a 19 and 22# spring on factory 89 disc/drum? Curious which would be a better choice for stock.
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Re: Cheap Proportioning Valve Upgrade
I did the 19 on a factory 89 with disk/drum, worked perfect. 22 might have been too much.
I have the 19 now in the same 3rd gen prop valve with an Astro master and Hydroboost, 4th gen front disks and big ford drums. Hitting the brakes is like slamming into a wall.
I have the 19 now in the same 3rd gen prop valve with an Astro master and Hydroboost, 4th gen front disks and big ford drums. Hitting the brakes is like slamming into a wall.
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Re: Cheap Proportioning Valve Upgrade
I've got an 82 rear drum proportioning valve and wanted to see if this mod would work not only on an 82 but also going from drum to disk. If so what spring should I use and where would it go on the 82 valve?
#309
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Re: Cheap Proportioning Valve Upgrade
Anyone have a 1NCF2 19lb spring they want to sell? From what I've read on this thread I think that is what would be best to start with on my car. Its a 91 with disk/drum brakes and I want to install this spring when I convert to rear disk.
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Re: Cheap Proportioning Valve Upgrade
#312
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Re: Cheap Proportioning Valve Upgrade
Hello Jersy Bouyy
Do you still have the spring (1ncr5)
Do you still have the spring (1ncr5)
#313
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Re: Cheap Proportioning Valve Upgrade
Hey Napster
I need a set. Do you still have them?
I need a set. Do you still have them?
#314
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Re: Cheap Proportioning Valve Upgrade
I just ordered a pack for mine (1NCR5). We'll see if it helps.
#315
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Re: Cheap Proportioning Valve Upgrade
I just ordered a pack of the 1NCR5 springs, will give them a try this spring. Hope it improves the rear brakes and pedal feel.
Last edited by Prime; 02-12-2015 at 11:48 AM.
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Re: Cheap Proportioning Valve Upgrade
Does anyone have a 1NCF2 spring they'd like to sell? If so, send me a PM with your PayPal info. Thanks
#317
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Re: Cheap Proportioning Valve Upgrade
You don't have to set up an account with grainger anymore you can just got to their site and order them.
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Re: Cheap Proportioning Valve Upgrade
I'm confused. The 1NCR5 shows up as a 30 lb/in spring. The 1 NCR8 shows up as 20lb. Which one is right for a stocke 1LE setup?
#319
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Re: Cheap Proportioning Valve Upgrade
Anyone have a couple 1NCR5 springs they want to sell me? I'm at a Military APO. USPS is the only way I can get them, and Grainger won't ship to APO.
#320
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Re: Cheap Proportioning Valve Upgrade
My 91 Camaro had disk/drum brakes from the factory. I installed a Strange 12 bolt rear with Wilwood disk brakes over the weekend. I change the proportioning valve spring to a 1NCR5 and the brakes work well. FYI for anyone doing a similar swap
#321
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Re: Cheap Proportioning Valve Upgrade
I have (4) 1NCR5 springs left if anyone needs one. $5 shipped. PM your address.
To help contribute to the thread, and for those with a similar setup as mine, I have a 1991 Camaro RS. Came with Factory Disc front and Drum rear. I swapped out the rear end for a factory 3rd gen 10 bolt disc brake rear end. (Still had drum brake prop valve). The rear end was upgraded with Splicer axels, 3:72 gears, Auburn POSI, and cross drilled / slotted rotors. (I know only the rotors matter for this discussion, but...) I added the 1NCR5 to my prop valve and noticed a difference in braking power!
I also have a Wilwood Front brake kit on my car, so this was a pleasant surprise.
Remember... You MUST bleed the back brakes for sure, and its encouraged to do the front too... If you skip this, any gain you think you feel is in your head. They wont function to their potential without this being done.
To help contribute to the thread, and for those with a similar setup as mine, I have a 1991 Camaro RS. Came with Factory Disc front and Drum rear. I swapped out the rear end for a factory 3rd gen 10 bolt disc brake rear end. (Still had drum brake prop valve). The rear end was upgraded with Splicer axels, 3:72 gears, Auburn POSI, and cross drilled / slotted rotors. (I know only the rotors matter for this discussion, but...) I added the 1NCR5 to my prop valve and noticed a difference in braking power!
I also have a Wilwood Front brake kit on my car, so this was a pleasant surprise.
Remember... You MUST bleed the back brakes for sure, and its encouraged to do the front too... If you skip this, any gain you think you feel is in your head. They wont function to their potential without this being done.
#322
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Re: Cheap Proportioning Valve Upgrade
I have (4) 1NCR5 springs left if anyone needs one. $5 shipped. PM your address.
To help contribute to the thread, and for those with a similar setup as mine, I have a 1991 Camaro RS. Came with Factory Disc front and Drum rear. I swapped out the rear end for a factory 3rd gen 10 bolt disc brake rear end. (Still had drum brake prop valve). The rear end was upgraded with Splicer axels, 3:72 gears, Auburn POSI, and cross drilled / slotted rotors. (I know only the rotors matter for this discussion, but...) I added the 1NCR5 to my prop valve and noticed a difference in braking power!
I also have a Wilwood Front brake kit on my car, so this was a pleasant surprise.
Remember... You MUST bleed the back brakes for sure, and its encouraged to do the front too... If you skip this, any gain you think you feel is in your head. They wont function to their potential without this being done.
To help contribute to the thread, and for those with a similar setup as mine, I have a 1991 Camaro RS. Came with Factory Disc front and Drum rear. I swapped out the rear end for a factory 3rd gen 10 bolt disc brake rear end. (Still had drum brake prop valve). The rear end was upgraded with Splicer axels, 3:72 gears, Auburn POSI, and cross drilled / slotted rotors. (I know only the rotors matter for this discussion, but...) I added the 1NCR5 to my prop valve and noticed a difference in braking power!
I also have a Wilwood Front brake kit on my car, so this was a pleasant surprise.
Remember... You MUST bleed the back brakes for sure, and its encouraged to do the front too... If you skip this, any gain you think you feel is in your head. They wont function to their potential without this being done.
#323
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Re: Cheap Proportioning Valve Upgrade
Ok i have read the whole thread by now and have a question:
I have a 92 Firebird with factory Front Disc and Rear Drum brakes. And I don't wanna convert to rear discs since I have rebuilt all rear brake parts a few weeks ago.
Will the 1NCR5 spring improve my brake or will it not work with rear drums?
If it will work, is anyone here who can send this little spring to Germany in an envelope or small package? I can pay with PayPal.
Greetings!
I have a 92 Firebird with factory Front Disc and Rear Drum brakes. And I don't wanna convert to rear discs since I have rebuilt all rear brake parts a few weeks ago.
Will the 1NCR5 spring improve my brake or will it not work with rear drums?
If it will work, is anyone here who can send this little spring to Germany in an envelope or small package? I can pay with PayPal.
Greetings!
#324
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Re: Cheap Proportioning Valve Upgrade
not sure I used it but I have disc brakes on all four and it help my 86 IROC Z but I have disc in the back
#327
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Re: Cheap Proportioning Valve Upgrade
Anybody tried this instead of spring inside of prop valve?
http://www.autopartswarehouse.com/sk...P11210001.html
http://www.autopartswarehouse.com/sk...P11210001.html
#328
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Re: Cheap Proportioning Valve Upgrade
I've never seen that yet, but id like to hear from someone that has. Concerned it might be just enough to lock the back brakes. I run a Upgraded spring (I believe I have the 22#) and it works great.
Anybody tried this instead of spring inside of prop valve?
http://www.autopartswarehouse.com/sk...P11210001.html
http://www.autopartswarehouse.com/sk...P11210001.html
#331
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Re: Cheap Proportioning Valve Upgrade
the 1ncr5 (19 lb) spring didn't do much for me. would not stop wheels when lifted off ground. bled the brakes multiple times. no improvements. put in an 1ncf2 (22 lb) spring today, didn't want to fit to well on the internal parts of prop valve. very hard to screw cap on. I can now stop the rear wheels without shifting into neutral. I haven't bled the brakes yet either and I can still tell a noticeable difference just in the driveway on gravel. I don't think you have to bleed the brakes after the spring swap as long as the prop valve is left on the car. fluid leaks out very slowly not letting air in. didn't lose much fluid removing the spring either. I'm not much of a mechanic, but the experts would still say bleed the brakes. so far I'm happy with the results.
#333
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Re: Cheap Proportioning Valve Upgrade
the 1ncr5 (19 lb) spring didn't do much for me. would not stop wheels when lifted off ground. bled the brakes multiple times. no improvements. put in an 1ncf2 (22 lb) spring today, didn't want to fit to well on the internal parts of prop valve. very hard to screw cap on. I can now stop the rear wheels without shifting into neutral. I haven't bled the brakes yet either and I can still tell a noticeable difference just in the driveway on gravel. I don't think you have to bleed the brakes after the spring swap as long as the prop valve is left on the car. fluid leaks out very slowly not letting air in. didn't lose much fluid removing the spring either. I'm not much of a mechanic, but the experts would still say bleed the brakes. so far I'm happy with the results.
foxxtrot82 what kind of system do you have? LS1 fronts? PBR rears? rear drums?
I just ordered some 1NCR5's from Grainger they have a warehouse about 5 minutes from my work. I'll be putting in the LS1 fronts this summer and I have already converted to disk in the rear. I'm hoping this spring will keep me from sourcing an 1LE prop valve. If the 1NCR5 doesn't work i'll try the 1NCR2.
#335
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Re: Cheap Proportioning Valve Upgrade
foxxtrot82 what kind of system do you have? LS1 fronts? PBR rears? rear drums?
I just ordered some 1NCR5's from Grainger they have a warehouse about 5 minutes from my work. I'll be putting in the LS1 fronts this summer and I have already converted to disk in the rear. I'm hoping this spring will keep me from sourcing an 1LE prop valve. If the 1NCR5 doesn't work i'll try the 1NCR2.
I just ordered some 1NCR5's from Grainger they have a warehouse about 5 minutes from my work. I'll be putting in the LS1 fronts this summer and I have already converted to disk in the rear. I'm hoping this spring will keep me from sourcing an 1LE prop valve. If the 1NCR5 doesn't work i'll try the 1NCR2.
Last edited by foxxtrot82; 04-07-2016 at 10:22 PM. Reason: comma marks needed to be added for simplicity
#336
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Re: Cheap Proportioning Valve Upgrade
OK, I gotta try this. I have a 1987 Trans Am with stock fronts and with what started out as drums in the back. I tossed on an axled that had disc. Not sure of year.
Any have a spring for sale? Not sure what Lbs. I'd need. Please advise as I'm close to having my LS Swap done and having extra braking force sounds kinda good.
Any have a spring for sale? Not sure what Lbs. I'd need. Please advise as I'm close to having my LS Swap done and having extra braking force sounds kinda good.
#337
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Re: Cheap Proportioning Valve Upgrade
OK, I gotta try this. I have a 1987 Trans Am with stock fronts and with what started out as drums in the back. I tossed on an axled that had disc. Not sure of year.
Any have a spring for sale? Not sure what Lbs. I'd need. Please advise as I'm close to having my LS Swap done and having extra braking force sounds kinda good.
Any have a spring for sale? Not sure what Lbs. I'd need. Please advise as I'm close to having my LS Swap done and having extra braking force sounds kinda good.
#339
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Re: Cheap Proportioning Valve Upgrade
Having issue with rear brakes not working properly. I have a 1984 Z-28 L69 with factory J-65 brake option. Looking to improve the stopping power.
Anyone have a spring for sale? From what I've read looks like 22lb should be the correct spring. Please advise....Thank you, Frank
Anyone have a spring for sale? From what I've read looks like 22lb should be the correct spring. Please advise....Thank you, Frank
Last edited by FJA1791; 04-29-2016 at 02:58 PM.
#340
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Re: Cheap Proportioning Valve Upgrade
I need one 1ncr5 (19 lb) and one 1ncf2 (22 lb). Anyone has both springs for a single shipment to Cleburne (TX) ?
#341
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Re: Cheap Proportioning Valve Upgrade
Having issue with rear brakes not working properly. I have a 1984 Z-28 L69 with factory J-65 brake option. Looking to improve the stopping power.
Anyone have a spring for sale? From what I've read looks like 22lb should be the correct spring. Please advise....Thank you, Frank
Anyone have a spring for sale? From what I've read looks like 22lb should be the correct spring. Please advise....Thank you, Frank
#342
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Re: Cheap Proportioning Valve Upgrade
Looking to do this upgrade. I assume this works with 4wheel disc breaks on 87 iroc. I was looking at the spring from McMaster-Carr part num. 9435k123. Any info/ help is greatly appreciated! Thanks!
#343
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Re: Cheap Proportioning Valve Upgrade
I went with that 32.15 lbs. spring, and it locked up my rears in the wet last night when I barely had my foot on the brake pedal. The rear end coming around when one is trying to stop in certain conditions is not a good thing. I think I will drop it down to somewhere in the lower- to mid- 20 lbs. range.
#344
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Re: Cheap Proportioning Valve Upgrade
Just got a notification about someone slipping in the wet trying this mod out. I tried this out a few years ago. My car ended up in a dirt field after an unintentional 360 degree spin. Luckily, my car and I were OK. After that, I gave up on this mod and bought an adjustable proportioning valve. No problems since then.
For the sake of safety, your lives, and cars, I recommend an adjustable proportioning valve.
For the sake of safety, your lives, and cars, I recommend an adjustable proportioning valve.
#345
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Re: Cheap Proportioning Valve Upgrade
Just got a notification about someone slipping in the wet trying this mod out. I tried this out a few years ago. My car ended up in a dirt field after an unintentional 360 degree spin. Luckily, my car and I were OK. After that, I gave up on this mod and bought an adjustable proportioning valve. No problems since then.
For the sake of safety, your lives, and cars, I recommend an adjustable proportioning valve.
For the sake of safety, your lives, and cars, I recommend an adjustable proportioning valve.
I see a lot of guys doing the drum/disc swap but not bothering with the front brakes at all. Front brake hoses may be old and swelling. Pads may be those cheap Autozone "high performance ceramic" kind which dont work at all unless they are hot. All this things contribute to subpar front braking performance. Now, add in some 11"5" rear rotors, new rear pads, new rear hoses and you now have better brakes in the rear than the front. Add a few less than perfect road conditions and human error and the result can be loosing control of the car.
A LOT of people here have posted great results with this spring mod. I myself plan on doing this very mod in the next couple weeks. There is a spring that is a little less aggressive than the first one posted too.
#347
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Re: Cheap Proportioning Valve Upgrade
The spring allows more fluid to the rear wheels before cutting it off. I have to push my pedal hard for the rear wheels to stop. I believe most of us are referring to the rear disc brakes not applying much force. Cleaning the sliding pins seamed to help, considering it was dry on the inside. My rears only slid a little on dry pavement when purposely dry to lock them down multiple times. The fronts got a little spongy when hot, so that allowed the rears more responsibility to slow the car down. Havent tried on wet pavement. Buy the 1ncr5 and 1ncf2 from grainger. Theyre not that expensive. Its a heck of a lot cheaper than trying a new set of rear calipers. Prices are a little steap compared to the fronts. If you don't like it, you can always put factory back in. Experience can go a long way. I'm still glad I'm not the only one out there who has had this problem. Brake safely!
#348
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Re: Cheap Proportioning Valve Upgrade
I have an 87 Camaro that had drum rear brakes from the factory and I'm swapping in a disk brake rear with the aluminum calipers. Just to clarify I can swap the stock spring in the original proportioning valve with the 1ncr5 or 1ncf2 and it will work fine with the new rear disk brake setup? Picture is of the prop valve that's on my car now.
#349
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Re: Cheap Proportioning Valve Upgrade
I have an 87 Camaro that had drum rear brakes from the factory and I'm swapping in a disk brake rear with the aluminum calipers. Just to clarify I can swap the stock spring in the original proportioning valve with the 1ncr5 or 1ncf2 and it will work fine with the new rear disk brake setup? Picture is of the prop valve that's on my car now.
and the car is almost perfectly balanced on the track. have had only 1 turn in 8 track days over the last 2 years and 2 sets of pads and rotors that the rear wanted to lock up 1st. Using the brakemotive slotted and drilled rotors and pads I could out brake anyone short of anyone with the carbon rotors. I did however have 1 out of 4 front rotors develop a crack from the drilled holes to the OD of the rotor...
The brakemotive stuff is so cheap I just replace the rotors and pads every year.
Also I do have 3 of the springs left if you want to PM me $5 shipped to anywhere in the lower 48...
#350
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Re: Cheap Proportioning Valve Upgrade
Looking for opinions here. I just did a drum to disc swap and used PBR calipers with stock Delco pads. I also used 13" Baer Eradispeed rotors. I have 3 options here for the proportioning valve.
1. swap in the 19lb spring (1ncr5) which I already have
or
2. swap in a complete valve from a disc/disc car of the same year as mine.
or
3. pull the spring and plunger out of the disc/disc valve and put it in my drum valve.
my original plan was to just do the srping mod but I found a disc/disc proportioning valve for under $50
1. swap in the 19lb spring (1ncr5) which I already have
or
2. swap in a complete valve from a disc/disc car of the same year as mine.
or
3. pull the spring and plunger out of the disc/disc valve and put it in my drum valve.
my original plan was to just do the srping mod but I found a disc/disc proportioning valve for under $50