Hey guys, im doing an engine rebuild and thinking of putting on a vacuum pump. I always had problems with braking power and my mechanic said a pump will also give more hp and im always looking for more hp. Has anyone here used one and which brand would you recommend. I have a sbc and the only one ive seen is a moroso brand for over a grand, seems expensive.
Vacuum pump
Started by
_volatl_
, Dec 14 2013 07:05 PM
5 replies to this topic
#2
V-SLR5000-P
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Posted 14 December 2013 - 07:43 PM
Are you referring to a crank case vacuum pump or a brake vacuum pump? A crank case pump relieves pressure within the engine and seems unnecessary unless you are running low tension rings or maybe blower/nitrous. A brake vacuum pump is used to maintain vacuum within the booster if your cam generates inadequate vacuum. Under about 12" of engine vacuum and you will need either a vacuum pump or hydroboost if you want assisted stopping. SBC make a brake vacuum pump which works well, but they are really noisy. A brake vacuum pump is more like $350 than $1,000.
#3
_volatl_
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Posted 14 December 2013 - 08:08 PM
The way i understood it from my mechanic was it takes vacuum from the crank case and transfers it to the booster, is that right or are they two different pumps
#4
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Posted 14 December 2013 - 08:46 PM
2 different pumps
If your running a big cam with lots of overlap you won't be making much vacuum and therefore your brakes will suffer
In which case install an alternator off a diesel (pick one that will cope with your rpm) that has a vac pump built into the back of it
Just needs an oil supply and you'll have all the vac you will ever need
The electric ones are noisy... run all the time and are generally abit naff
Other alternative is to forget vacuum altogether and run a hydraboost
http://www.hydratechbraking.com
#5
_brodie_
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Posted 19 December 2013 - 09:52 PM
Hi ...!
Well i am also using moroso brand from many months and this is going very well. However its expensive but it also gives good hp..moroso
#6
_barana_
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Posted 20 December 2013 - 10:00 PM
A bit naff? Is that like a bit la-de-da thellas?
Yeah just pull an alternator of a diesel astron,They´re everywhere, comes out in - triton,pajero,l300,early canter etc etc
Edited by barana, 20 December 2013 - 10:01 PM.
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