Diameter of the Mopar JK J8 brake booster?

MOTOWN

MOTOWN

Member
Im trying to get the diameter on th J8 brake booster I got the one tons and 37s on my WJ and it has spongy brakes , anyone who has one know the diameter?
 
Ddays

Ddays

Hooked
There's so much shit in the way that I can't get an accurate measurement. Best guess is around 10" dia.
 
MOTOWN

MOTOWN

Member
Ddays said:
There's so much shit in the way that I can't get an accurate measurement. Best guess is around 10" dia.
Click to expand...

Thanks , im thinking I may go Hydra-boost for simplicity and i can get a unit with a 1.25" bore to give me the brake psi I need with the one ton bakes , my brake booster is about 9" in diameter and with a 10" or 11" booster I would have to dimple or cut the cowl at the top of the booster for clearance.
 
Ddays

Ddays

Hooked
MOTOWN said:
Thanks , im thinking I may go Hydra-boost for simplicity and i can get a unit with a 1.25" bore to give me the brake psi I need with the one ton bakes , my brake booster is about 9" in diameter and with a 10" or 11" booster I would have to dimple or cut the cowl at the top of the booster for clearance.
Click to expand...

Why would you have to do that? The J8 booster is made to fit the JK's.
 
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