hi there,

took the car for a spin today to help solve my idle problems and i fixed a vaccum leak. but my brakes are crappy!!!

they dont stop the car like they used to... before the cam

i know i dont have any leaks, so i how can i improve my braking (vaccum) with a cam, is there something i can put in the brake lines leading to the master cyclinder to impove the vac?

 

Man! I had the same problem, and I am STILL having this same problem! I bled my brakes etc... Can someone please find an answer to this problem.

I bought a new master cylinder that I hope will fix this problem!!! Anyone?

 

Amazing! I have the same problem. The only difference is I didn't drive my car in 2 months and I took it to my boy's house to repair a few things I almost crashed. It felt like the braking system on a tank

 

It will be a little expected that your brakes down hold as much as before due to less vacuum created by the cam. Have you checked to see how much vacuum your engine is getting at idle and other various rpm's? If I recall correctly, anything lower than about 10-12 psi of vacuum is not good for power brakes. They (who THEY is, I don't know lol) do make a Vacuum canister to assist in storing vacuum to assist with power brakes and bigger cams. With a Hotcam, I wouldn't expect it to be needed though. I would continue to look for other vacuum leaks.

Kyle

 

I went with a larger cam and had no problems with my brakes. If your VE is poor at low RPM (poor MAP), then you will have less vacuum than you should, in which case you need to tune the car.

 

i went from head to toe... no leaks...

i dont know my vaccum but i know its not enough!!!

is there an inline vaccum booster you can buy ?

 

u want to see no vac?
i'll let u drive my car-
brakes are 90% WOT when i'm stopped

 

No way hotcam should leave you with no brakes. Time to buy a vacuum guage and find out what type of vacuum your motor is producing.

One problem you may be having is that the idle in the computer is not high enough for the cam. My brakes seemed a little funky with the cam and stock idle setting. It was very noticeable until I used LT1 edit to bump up the idle.

 

Well, I had my chip burnt by Brian at PCM for LEss so the tuning shouldn't be an issue. I as well don't have any vacuum leaks. I will check out the vacuum psi when I take it back to work, what's the range I should be at?

 

Depending on the condition of the engine, mods, etc, you should see anywhere from 16-20 psi at idle.

Kyle

 

Hey Trey, how much did those Dnyomax Longtubes run ya? Hows the clearance?

 

I bought them used with like 300 miles on them
they costed me around $500 shipped but i got a killer deal.
i lost zero ground clearance

 

Thats wierd, I was not able to tell a difference with my brakes after the hotcam kit. Maybe this is because I have a 6spd?? Even before tunning I didn't really notice any difference.

Aaron