Also, doesn't the 1 ton have wider rear drum brakes than the 3/4 ton? Both are same diameter 14bff, but I think the shoe size is wider.
And, keeping drums FTW.
And, keeping drums FTW.
CK5
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Front Brake (8 lug conversion) question
- Thread starter Phil513
- Start date
Probably, I know mine is a 1 ton rear axle from a 77 C30. So I have to move spring perches. But dang, those drums are freakin' huge. So I wouldn't doubt its as wide as it gets.
And yeah, I'm not afraid of drums. I have changed plenty of shoes back in the day, that doesn't bother me much.
I'll try to measure the backspaceing tomorrow
They'll work. I've got 15s on mine. It's the fronts that are the problem. JB7 brakes on the majority of 15 inch wheels means some grinding on the caliper.
Yeah, I have figured in some grinding.
JB6 and JB7 on 8 lugs will take the same amount of grinding. They use the same rotor, caliper mount and the casting of the caliper is the same. The JB7 caliper has a 7/32 larger bore/piston. The right backspacing on steel wheels will go with no grinding. I gave up on the 15 inch wheels so I don't remember the required backspace.
Thanks, I picked up the JB7s today!
Just measured mine they have 4 inch backspaceing, I did have to grind the calipers some
The wheels I have been looking at have 4" as well. Good to know..
Those look like the 11" ones, maybe I'm wrong.
I think it's the opposite. 11" are 3" wide I think and the 13" are 2.something"
Changing shoes only sucks since the whole hub has to come off!
Actually, on a 14 bolt the axles have to come out, correct?
Axles out, super easy on a FF
Then retainer lock and drum
And the 13" drums are 3" wide shoes
On the bigger 14 bolt (10.5"), the axles and wheel bearing all have to come apart to mess with brakes.
There are a bunch of rear drum options, if I remember right there are a couple 3/4 ton drums and a couple 1 ton drums too (SRW and DRW being different, maybe same dia but the DRW had wider shoes?).
As for clearance for wheels, you'll almost always have more trouble with the front brakes than the rear.
There are a bunch of rear drum options, if I remember right there are a couple 3/4 ton drums and a couple 1 ton drums too (SRW and DRW being different, maybe same dia but the DRW had wider shoes?).
As for clearance for wheels, you'll almost always have more trouble with the front brakes than the rear.
It's not hard to do the brakes...just a little annoying. You'll have to top off your gear oil too as you'll lose some out the sides.
I just looked it up, the 13" can come with 2.5" or 3.5" wide in srw, at least for a 77 c30. All the 13" have diameters over 15" but I think they stick out of the wheel so far it won't matter.
I just looked it up, the 13" can come with 2.5" or 3.5" wide in srw, at least for a 77 c30. All the 13" have diameters over 15" but I think they stick out of the wheel so far it won't matter.
Been there done this several times. 15" fit over the rear drums. I have had 15" rims on several different 14 bolt rears. Over 5" or 6" of backspacing you might run into an issue but that would be a super unusual wheel.
Front the grinding on the caliper is super minimal. You do need to grind some off your fancy new mount though. I have had steel 15" wheels that only required the mount to be ground. No caliper grinding.
I recommend checking with your wheels and doing the minimum amount.
Front the grinding on the caliper is super minimal. You do need to grind some off your fancy new mount though. I have had steel 15" wheels that only required the mount to be ground. No caliper grinding.
I recommend checking with your wheels and doing the minimum amount.
Go with the bigger caliper.
The calipers are the same externally, so it doesn't change the required grinding.
The grinding on a 3/4 ton is very minimal compared to a 1 ton, there is nothing to worry about there.
The rear axle will fit a 15" wheel, no matter what stock size brake drum it has, as there is no caliper with a drum brake.
Martin
The calipers are the same externally, so it doesn't change the required grinding.
The grinding on a 3/4 ton is very minimal compared to a 1 ton, there is nothing to worry about there.
The rear axle will fit a 15" wheel, no matter what stock size brake drum it has, as there is no caliper with a drum brake.
Martin
Thanks dude, I'm on it. Already bought the bigger piston calipers yesterday.
Now, Reid knuckle, crossover kit, and 2wd steering box. And gears. lol.
