Front brakes?

Douglas2 · 03-11-2010, 10:38 AM

hey-Hey!!!,
Is there any upsizing the front calipers/pads over the stock ones? I'd like a bit more front brake and would rather just get a bigger OEM part( that might include rotors). It is a 2WD '90 model.
cheers,
Douglas

***Orangeracer*** · 03-11-2010, 01:09 PM

i think that the stock one is the only one.

dpuckett · 03-11-2010, 01:31 PM

One of the parts stores websites lists different sizes for the caliper piston, but that's all I know of.

You're the first in a long time, if ever, to want MORE front brake bias. Usually, it's the rears that quit.

One thing I did notice was that when I put in new pads on my W250, the pedal firmed up quite a bit. Pads were thin and worn crooked as a circuit judge (ok, maybe not THAT crooked), and I'm thinking with the caliper piston moved farther in he caliper body, there is less volume to pressurize, thus making the brakes work with less pedal travel.

DP

Douglas2 · 03-11-2010, 06:21 PM

Quote:

Originally Posted by dpuckett

You're the first in a long time, if ever, to want MORE front brake bias. Usually, it's the rears that quit.

DP

The rears are easy, put the dually wheel cylinders in( they're bigger than the 250's ). The fronts OTOH, are another story it seems...

cheers,
Douglas

PPDMostWanted · 03-11-2010, 11:05 PM

What about a valve reducing the rear brakes? Proportioning valve. I bought one but I don't know if I'll use it.$120

dpuckett · 03-12-2010, 08:41 PM

Same part number for the duallies and SRWs up front.

There was an article in the TDR a few years back about brakes and piston sizes and whatnot. Gist of it was, you can increase your piston bore size on the wheel end (like your 7/8 to 1-1/8 wheel cylinder upgrade), but you can go too far, and actually go backwards in braking ability if you increase things too much at the wheel without a corresponding increase in master cylinder bore size as well. Goes back to physics- bigger volume, all else equal, pressure will be lower. Lower pressure leads to less brake bite. Just food for thought, not trying to discourage you or anything. The brake system is a major weakness on 1stGens.

DP

iowacummins · 03-12-2010, 09:11 PM

yeah stock 3/4 ton truck had 7/8" wheels cylinders 1tons had 1" wheel cylinders. chevy 1 tons had 1 1/8" wheel cylinders. that is waht i installed on my truck. very nice upgrade along with 3" shoes from one tons.

for the front i wonder if there is any chevy application that used lager calipers? what teh one tons use?

Douglas2 · 03-12-2010, 10:03 PM

Quote:

Originally Posted by iowacummins

for the front i wonder if there is any chevy application that used lager calipers? what teh one tons use?

hey-Hey!!!,
The stock Dodge calipers are 3" pistons( done with a tape measure at Napa). Finding a 3-1/4" would be nice; heck even a 3-1/8" would probably be enough to get some of my money.

All this talk about brake upgrades and I sit here with 20 y-o stock rubber flexible hoses...heh-heh-heh. Guess some kevlar or braided stainless would be in order.
cheers,
Douglas

03-11-2010, 10:38 AM	#1 (permalink)
Douglas2 Cummins Enthusiast Join Date: Mar 2010 Location: Ann Arbor, MI Posts: 211 Thanks: 0 Thanked 10 Times in 9 Posts iTrader Score: 0 reviews Douglas2's Truck Pics	Front brakes? hey-Hey!!!, Is there any upsizing the front calipers/pads over the stock ones? I'd like a bit more front brake and would rather just get a bigger OEM part( that might include rotors). It is a 2WD '90 model. cheers, Douglas __________________ 1990 D250, NV5600, 16cm housing, PAC brake, TST Kit KDP tab, Powr-Lok'd 3.07....IC soon 1991 D250, 16cm housing

03-11-2010, 01:09 PM	#2 (permalink)
*Orangeracer* I bleed Diesel Join Date: Aug 2007 Location: Maryland Posts: 2,438 Thanks: 10 Thanked 17 Times in 15 Posts iTrader Score: 0 reviews Orangeracer's Truck Pics	i think that the stock one is the only one. __________________ selling a brand new rebuilt nv5600 4x4 out of a 2000. $4000 obo. Trade for first gen.

03-11-2010, 01:31 PM	#3 (permalink)
dpuckett Diesel Freak Join Date: Mar 2007 Location: Cape Girardeau MO Posts: 720 Thanks: 2 Thanked 19 Times in 19 Posts iTrader Score: 0 reviews dpuckett's Truck Pics	One of the parts stores websites lists different sizes for the caliper piston, but that's all I know of. You're the first in a long time, if ever, to want MORE front brake bias. Usually, it's the rears that quit. One thing I did notice was that when I put in new pads on my W250, the pedal firmed up quite a bit. Pads were thin and worn crooked as a circuit judge (ok, maybe not THAT crooked), and I'm thinking with the caliper piston moved farther in he caliper body, there is less volume to pressurize, thus making the brakes work with less pedal travel. DP __________________ 93 W250 xcab LE 300K. Built auto, HX35/40-16 turbo, ISSPRO fuel pressure and pyro. Other goodies and updates coming......

03-11-2010, 11:05 PM	#5 (permalink)
PPDMostWanted Cummins Nut Join Date: Sep 2007 Location: Washington, Pullman Posts: 461 Thanks: 0 Thanked 1 Time in 1 Post iTrader Score: 0 reviews PPDMostWanted's Truck Pics	What about a valve reducing the rear brakes? Proportioning valve. I bought one but I don't know if I'll use it.$120 __________________ Old enough to know better, Too young to resist. 1990 w250 CTD LE reg cab. Straight piped 3.5''. A-727 tranny. 249,000 miles. All STOCK! Gauges - EGT, Boost, Tranny, Tach, and Fuel Pressure. Soon to experiment with, Waste Vegetable Oil.

03-12-2010, 08:41 PM	#6 (permalink)
dpuckett Diesel Freak Join Date: Mar 2007 Location: Cape Girardeau MO Posts: 720 Thanks: 2 Thanked 19 Times in 19 Posts iTrader Score: 0 reviews dpuckett's Truck Pics	Same part number for the duallies and SRWs up front. There was an article in the TDR a few years back about brakes and piston sizes and whatnot. Gist of it was, you can increase your piston bore size on the wheel end (like your 7/8 to 1-1/8 wheel cylinder upgrade), but you can go too far, and actually go backwards in braking ability if you increase things too much at the wheel without a corresponding increase in master cylinder bore size as well. Goes back to physics- bigger volume, all else equal, pressure will be lower. Lower pressure leads to less brake bite. Just food for thought, not trying to discourage you or anything. The brake system is a major weakness on 1stGens. DP __________________ 93 W250 xcab LE 300K. Built auto, HX35/40-16 turbo, ISSPRO fuel pressure and pyro. Other goodies and updates coming...... Last edited by dpuckett; 03-12-2010 at 08:44 PM.

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03-12-2010, 09:11 PM	#7 (permalink)
iowacummins Diesel Freak Join Date: Jan 2008 Posts: 653 Thanks: 11 Thanked 13 Times in 13 Posts iTrader Score: 0 reviews iowacummins's Truck Pics	yeah stock 3/4 ton truck had 7/8" wheels cylinders 1tons had 1" wheel cylinders. chevy 1 tons had 1 1/8" wheel cylinders. that is waht i installed on my truck. very nice upgrade along with 3" shoes from one tons. for the front i wonder if there is any chevy application that used lager calipers? what teh one tons use? __________________ 1993 Dodge W250 Reg cab. Auto. Red Oak Diesel 5x.012s. .010" headgasket, A1 Technologies Head studs. Pump adjusted everyway i can for now. Timing bumped 1/4" and Aurora 3000 turbo. 4"-5" exhaust 7" Chrome CAT stack.

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