OffRoadTek
Registered Member
Is the pedal squishy or is the truck just not stopping?
CK5
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4wheel discs, FOUND PERFECT MASTER CYLINDER!!
- Thread starter muddybuddy
- Start date
doonjumper
1/2 ton status
Do you have 4 wheel discs? If so did you replace your proportioning valve to accomodate them?
THANKS! very cool
chevysmithz71
1/2 ton status
Subscribed
too, probably should do this upgrade when I install the rear discs.
Yeah I have 4 wheel disc.
I didn't do anything with the proportioning valve. I'll try by passing it and using the adjustable prop. valve.
I must have missed that part the first time reading through
Thanks
OffRoadTek
Registered Member
I never touched my proportioning valve after my brake swap. It doesn't affect the front brakes, just the back, and it wouldn't affect a squishy pedal anyway.
doonjumper
1/2 ton status
I got my porportioning valve from inline tubes for about $90. Just tell em you have a 4 wheel disc brake set-up and they'll know exactly what you are talking about. Good dudes there. Very helpful and answered all my questions.
doonjumper
1/2 ton status
Did you use rubber brake lines or the braided ones? I used rubber lines for the rear of mine and it caused a squishy pedal cuz they balooned when pressure was applied. Went to braided and problem went away
OffRoadTek
Registered Member
Still Awesome!
Just had to say again how much I love my brakes after putting this MS on my Blazer. I got in my dads bone stock 89' Jimmy to run to the store the other day and about freaked when I hit the brakes. I thought the brakes had gone out because the pedal went down alot farther than what I'm used to on my Blazer.
Just had to say again how much I love my brakes after putting this MS on my Blazer. I got in my dads bone stock 89' Jimmy to run to the store the other day and about freaked when I hit the brakes. I thought the brakes had gone out because the pedal went down alot farther than what I'm used to on my Blazer.
glad other people are having the same success with this master cylinder setup as i am 4wheel disc's
my setup is d60 up front, d70hd rear with caddy calipers, stock proportioning valve and the master cylinder i posted in my first post. im also using stainless steel brakelines up front.
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OffRoadTek
Registered Member
Yeah, but get it from www.rockauto.com. Since they have an interactive online catalog I can't post straight to the MS, but just do a parts search for "102754". They have it new for $72 with a $25 core. Cheapest I've seen. I'll sing their praises all day long. I've gotten quite a few things from them for all my vehicles.
PS: You will have to swap your resevoir from your old MS over. These have a huge one that won't fit under the hood. Trust me it has to be easier to swap it before you bench bleed your MS. =)
PS: You will have to swap your resevoir from your old MS over. These have a huge one that won't fit under the hood. Trust me it has to be easier to swap it before you bench bleed your MS. =)
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ive got the huge reservoir on my mc that it came with and it just fits under the hood perfectly, might depend on year of truck, mines an '88 k5 with stock hood, with the felt junk removed from the underside of the hood.
OffRoadTek
Registered Member
True, the hood lines did fluctuate some I think. On my 84' it was an inch or more from clearing, I now have a nice square hole in the insulation above the MS from where I attempted to get all the clearance I could, but it was still far from enuff.
So before anyone puts this MC on your truck I suggest setting a 2x4 or something about 1.5 inches tall on top of your stock MS reservoir and see if it still clears the hood.
So before anyone puts this MC on your truck I suggest setting a 2x4 or something about 1.5 inches tall on top of your stock MS reservoir and see if it still clears the hood.
Someone said you could shime the powerbooster to get more clearance
The MS in the OPs post did not clear on my 91.
OffRoadTek
Registered Member
Yeah you can shim the booster. But I already had a short reservoir there so it was the quick fix. It might have even been the right way to fix it. Tho the quick way and the right way are rarely the same.
blazin' j
1/2 ton status
definantely on my "to do list"
