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Brake problem / hilux

Tech Talk for Cruiser owners.

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Brake problem / hilux

Post by Lil pig »

I done a v6 upgrade awhile ago now and ever sence then my brakes have felt hard, you nearly need to use 2 feet to pull her up in a hurry. any ideas what it might be. it was a 2.8 diesel before.
92 V6 Lux 2' Spring lift, 2' Body lift, 31' BFG Muddies, Limo rear.
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Post by Dingo »

I would imagine it would have something to do with the brake booster and the vacuum for it.
Diesel obtains it's vacuum from the vacuum pump whilst the V6 would obtain it from the manifold.

Possibly booster is too small now or maybe cactus even.
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Post by ausyota »

Yep sounds like a booster problem.
I cant see it being a problem arising from the conversion though, unless the hose wasnt conected properly.
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Post by Frankenyota »

Petrol engines have a check valve in the booster line, maybe try fitting one.
To test the booster,
Pump the brake pedal til it's hard then start the car, if the pedal sinks slightly the booster is good.

Matt
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Post by MissDrew »

Yeah I had to put a one way valve in the vac line.
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Post by big lux »

i used da commo line with the valve had no problems wit da. till now gota double pump da brake :?
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Post by Lil pig »

Frankenyota wrote:Petrol engines have a check valve in the booster line, maybe try fitting one.
To test the booster,
Pump the brake pedal til it's hard then start the car, if the pedal sinks slightly the booster is good.

Matt
Its got a check valve and the test was ok.
92 V6 Lux 2' Spring lift, 2' Body lift, 31' BFG Muddies, Limo rear.
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Post by Sic Lux »

big lux wrote:gota double pump da brake :?
sounds like air in the system, drums out of adjustment, fliud bypassing seals in master cyl
plenty of parts on the bench
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