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Cheap Proportioning Valve Upgrade

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Cheap Proportioning Valve Upgrade

Old 02-19-2013, 08:34 PM
  #201  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by TallTim View Post
Screwed in? I have rear calipers.
83-88 cars had delco calipers that had to be rotated to compress.

http://www.tooltopia.com/lisle-41000...ricegrabber_r1

-- Joe
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Old 02-22-2013, 12:49 PM
  #202  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by*TallTim*I'm in for a 1NCR5 19 lb spring, kinda lost track who had em avail here...*If anyone has one you can spare to sell!?

^what he said, looking for a 19lb

Ill take a 22lbr too
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Old 02-27-2013, 10:06 AM
  #203  
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Re: Cheap Proportioning Valve Upgrade

1NCR5 19 lb spring i will buy one.
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Old 02-27-2013, 10:44 AM
  #204  
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Re: Cheap Proportioning Valve Upgrade

Stang and obey I've got two 1NCR5 pm me and I'll drop in the mail to you. Mark I'm resending my last one to you.
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Old 02-27-2013, 04:46 PM
  #205  
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Re: Cheap Proportioning Valve Upgrade

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Old 02-27-2013, 05:08 PM
  #206  
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Re: Cheap Proportioning Valve Upgrade

I have 3 1NCR5 springs left over from when I did mine. PM me if interest.


Don't ask me if it actually worked because i can't tell you. when I went to bleed my rear brakes it reminded me of when I play Basketball- nothing but air. They do work alot better now however.
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Old 03-10-2013, 09:57 PM
  #207  
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Re: Cheap Proportioning Valve Upgrade

Just a quick question. When you unscrew the bolt to get at the original spring, does brake fluid squirt out? Or does the reservoir have to be empty before you unscrew it?
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Old 03-10-2013, 10:16 PM
  #208  
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Re: Cheap Proportioning Valve Upgrade

I had a couple drops come out. nothing to write home about. Put a rag under it.
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Old 03-11-2013, 09:35 AM
  #209  
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Re: Cheap Proportioning Valve Upgrade

Yes make sure you have plenty of rags when you unscrew it brake fluid will mess up your paint
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Old 03-11-2013, 07:39 PM
  #210  
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Re: Cheap Proportioning Valve Upgrade

put me in the middle. a little came out but I didn't need lots of rags. I found that to restart the nut I jammed some tissue in the socket before using a thick glove to grip and carefully do the first couple turns.
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Old 03-11-2013, 08:58 PM
  #211  
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Re: Cheap Proportioning Valve Upgrade

Just remember no to let go of it until it is completely out.
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Old 03-12-2013, 11:04 AM
  #212  
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Re: Cheap Proportioning Valve Upgrade

its better to be prepared I always use 3 rags brake can ruin a great paint job
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Old 04-04-2013, 08:01 PM
  #213  
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Re: Cheap Proportioning Valve Upgrade

Anyone have a 1NCR5 still?
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Old 04-17-2013, 03:15 PM
  #214  
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Re: Cheap Proportioning Valve Upgrade

Anyone have a 1NCR5 to sell ??? pm if so thanks
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Old 04-19-2013, 09:19 AM
  #215  
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Re: Cheap Proportioning Valve Upgrade

Just swapped to LT1 rear brakes, got the internal from the disk proportioning valve and installed on my drum proportioning valve and it worked perfect.
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Old 04-19-2013, 10:18 AM
  #216  
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Re: Cheap Proportioning Valve Upgrade

Anyone sill have a extra19lb spring?
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Old 06-10-2013, 09:14 AM
  #217  
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Re: Cheap Proportioning Valve Upgrade

I just read through this but I want to know - has anyone actually tried this on the older 82-83 combination valve? I am installing a new MC this week and I wanted to give this a shot. Just wondering if the spring and spring pressures are the same.
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Old 06-12-2013, 10:04 PM
  #218  
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Re: Cheap Proportioning Valve Upgrade

hey guys, i don't know if anyone is still interested but i have (4) 1NCR5 springs. PM if interested. my zip is 07094 if you want to look up shipping.
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Old 06-16-2013, 04:11 PM
  #219  
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Re: Cheap Proportioning Valve Upgrade

For sale:
two 1NCF2 springs

$3 each, + $2 shipping for as many springs as you want in a padded envelope. Shipping to 48 states only. PM me.

1NCR5 springs are all gone...

Last edited by two-if-by-sea; 07-10-2013 at 06:09 PM. Reason: update inventory
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Old 07-12-2013, 03:37 PM
  #220  
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Re: Cheap Proportioning Valve Upgrade

I just did this mod to my 82 TA with the Kelsey Hayes proportioning valve. I am not sure I like the results. It is raining here so I couldn't really give a good test, but the backs seem to lock before the front at times. When I took the spring out I noticed the original was about 1/4 inch shorter. I am not sure if this made a difference, but It might have less room to move. I may take it apart and trim the spring a bit to see if it makes a difference.
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Old 07-12-2013, 05:18 PM
  #221  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by 82tarecaro View Post
I just did this mod to my 82 TA with the Kelsey Hayes proportioning valve. I am not sure I like the results. It is raining here so I couldn't really give a good test, but the backs seem to lock before the front at times. When I took the spring out I noticed the original was about 1/4 inch shorter. I am not sure if this made a difference, but It might have less room to move. I may take it apart and trim the spring a bit to see if it makes a difference.
I just went out and measured all three. I'm running a stock GM valve
stock - 39.8mm
1NCR5 - 37.52mm
1NCF2 - 38.02mm
I never tried the 1NCF2, but with the 1NCR5 I am not able to lock front or rear brakes. I'm quite pleased with the results.
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Old 07-12-2013, 07:54 PM
  #222  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by two-if-by-sea View Post
I just went out and measured all three. I'm running a stock GM valve
stock - 39.8mm
1NCR5 - 37.52mm
1NCF2 - 38.02mm
I never tried the 1NCF2, but with the 1NCR5 I am not able to lock front or rear brakes. I'm quite pleased with the results.
My prop valve is the old cast iron style. I think I need to trim the spring a bit.
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Old 07-18-2013, 06:34 PM
  #223  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by GTAman View Post
hey guys, i don't know if anyone is still interested but i have (4) 1NCR5 springs. PM if interested. my zip is 07094 if you want to look up shipping.


i need one . ived sent you a pm thanks
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Old 07-22-2013, 09:40 AM
  #224  
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Re: Cheap Proportioning Valve Upgrade

I also have 4 1NCR5 springs available
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Old 07-30-2013, 03:58 PM
  #225  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by hydrolic144 View Post
I also have 4 1NCR5 springs available
Have sent you a PM
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Old 07-31-2013, 05:38 PM
  #226  
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Re: Cheap Proportioning Valve Upgrade

Is this a worthwhile mod if you have a 1LE prop valve?
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Old 07-31-2013, 06:03 PM
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Re: Cheap Proportioning Valve Upgrade

Zoro tools is another good source for these. Pack of 5 $4.65 + about $5.00 shipping.

Link to 1NCR5
http://www.zorotools.com/g/00056855/k-G0463723


Link to 1NCF2
http://www.zorotools.com/g/00056855/k-G0463723

Last edited by Nunazet; 07-31-2013 at 06:10 PM.
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Old 08-06-2013, 08:24 PM
  #228  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by hydrolic144 View Post
I also have 4 1NCR5 springs available

pm sent "
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Old 08-20-2013, 07:24 AM
  #229  
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Re: Cheap Proportioning Valve Upgrade

i have the same spec spring but in a 32lb instead of 30lb..what will it do?

Last edited by slowsi; 08-20-2013 at 07:52 AM.
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Old 08-23-2013, 10:13 PM
  #230  
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Re: Cheap Proportioning Valve Upgrade

I just got my springs in today and I stalled it and bled the rear brakes and wow instant gratification

This post should be stickied
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Old 08-27-2013, 01:24 PM
  #231  
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Re: Cheap Proportioning Valve Upgrade

i did this small upgrade and very shocked on the large amount of difference from a small spring
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Old 08-30-2013, 10:12 AM
  #232  
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Re: Cheap Proportioning Valve Upgrade

I'd like a 19lb spring.

I'm assuming it'll work in a 87, never saw that it wouldn't in The thread
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Old 08-31-2013, 12:14 PM
  #233  
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Re: Cheap Proportioning Valve Upgrade

So i'm planning on getting the 1NCR5 spring for my 91. Do you HAVE to bleed the rears after installing this?
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Old 08-31-2013, 12:35 PM
  #234  
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Re: Cheap Proportioning Valve Upgrade

You are letting air into the system - specifically the rear brake circuit. You absolutely have to bleed the rears, and I would do the fronts as well.
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Old 09-02-2013, 10:36 AM
  #235  
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Re: Cheap Proportioning Valve Upgrade

This is what I did. It may not be for everyone but it's a compromise between stock and the 19# spring.

First a little background. My car is an 89 IROC (late 6/89 car- 2 design) with the "performance/1LE" J65 rear disc brakes~ 11.6 rotors/PBR calipers. I have upgraded the front to stock LS1 with ceramic pads and stainless lines. My proportioning valve is stock for this model. The rear calipers were gone through with new rotors and semi-metallic pads. Like others I felt the rears could do more but didn't want a rear lock up issue as this is a street driven car. BTW I have a good parking brake.

I used the brass banjo washers used on the caliper hoses to shim my stock spring. I picked up an assortment at the local auto parts store. The ID (.380") of the washers are correct but the OD needed trimming down to .510". I scribed a line around the washer with my dial calipers and ground the majority on my bench grinder. The final few thousands I took off with some 220 & 400 paper wetted with WD40.

I used an .032" washer on the end of the spring where it touches the valve and an .062" on the plug end for a total of ~.094" shim. This dimension was used because it basically was the most I could put in each position and still have enough pilot to center the spring well.

The only feedback I can give is that it feels better. I have great brakes with this setup but the rears don't lock up in the wet. My goal was to not over-bias the rears. However, with the larger LS front piston area I felt the rears needed a bit more bias & this is a compromise between stock and the 19# spring.
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Old 09-09-2013, 02:48 PM
  #236  
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Re: Cheap Proportioning Valve Upgrade

Hey guys I just ordered a pack of the 1ncr5 19lb springs ill have 4 left after mine, anyone need some?
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Old 09-09-2013, 07:45 PM
  #237  
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Re: Cheap Proportioning Valve Upgrade

Yup send me one. Pm sent
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Old 09-09-2013, 07:50 PM
  #238  
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Re: Cheap Proportioning Valve Upgrade

I want one, pm me please?
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Old 09-09-2013, 08:31 PM
  #239  
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Re: Cheap Proportioning Valve Upgrade

Originally Posted by dabomb6608 View Post
I want one, pm me please?
As soon as I get them in Ill ship them out, as soon as I get 4 people interested.
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Old 09-09-2013, 09:19 PM
  #240  
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Re: Cheap Proportioning Valve Upgrade

I want one!!
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Old 09-09-2013, 11:40 PM
  #241  
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Re: Cheap Proportioning Valve Upgrade

I need a 1ncr5 please pm!!
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Old 09-12-2013, 08:09 AM
  #242  
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Re: Cheap Proportioning Valve Upgrade

2 19lb springs left if you want them pm me. It easier for me to keep track that way.
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Old 10-06-2013, 04:53 PM
  #243  
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Re: Cheap Proportioning Valve Upgrade

Well I just got done swapping this spring in (Thanks 396lsx!) and to be honest I don't feel a major improvement over stock. I'll say that the rears to feel a little more active but not the big change I was expecting. Still not a bad upgrade for a few bucks.
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Old 10-07-2013, 05:37 PM
  #244  
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Re: Cheap Proportioning Valve Upgrade

On mine there was a big deference in the back which is where there a big change for the better happy with mine
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Old 10-18-2013, 07:37 AM
  #245  
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Re: Cheap Proportioning Valve Upgrade

If anyone has a 1NCR5, I'd be interested in one. PM me please.
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Old 10-18-2013, 07:51 AM
  #246  
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Re: Cheap Proportioning Valve Upgrade

drdave88,

PM sent...

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Old 10-29-2013, 01:59 PM
  #247  
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Re: Cheap Proportioning Valve Upgrade

Does anyone have one that I can buy? pm me please and I can send paypal thanks
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Old 10-29-2013, 09:19 PM
  #248  
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Join Date: Jan 2002
Location: 63701
Posts: 71
Car: 1988 Pontiac gta
Engine: 5.7 tpi
Transmission: 700r4
Axle/Gears: Borg Warner 3.27
I still have a couple left over
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Old 10-30-2013, 12:08 AM
  #249  
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Join Date: Dec 2008
Location: Laredo, TX
Posts: 269
Car: 1991 Camaro Z28
Engine: 350ci TPI
Transmission: built 700r4
Axle/Gears: 4th gen rear end
I would like one for my build. Anyone nice enough to send me one
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Old 10-30-2013, 12:31 PM
  #250  
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Join Date: Jan 2002
Location: 63701
Posts: 71
Car: 1988 Pontiac gta
Engine: 5.7 tpi
Transmission: 700r4
Axle/Gears: Borg Warner 3.27
Sure I got 1 left
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