need some input
Thread Starter
Instructor
Joined: Jan 2009
Posts: 193
Likes: 0
From: NJ
need some input
I ran my car at the track Sunday and noticed my car was running much slower than usual. My car is making about 525 hp off the motor and I was running consistent 13.0-13.4 with 105-106 mph trap speeds. I couldn't not figure out what was wrong until I got to my house afterwards I noticed the 2 brass vac ports off my carb where it mounts on to my manifold were open. I am guessing when it was stored over winter mice chewed the rubber caps off or they somehow came off on their own. Also I was unable to hold myself with the brake to do a burnout before the launch. The pedal went right to the floor and would only hold to 1500 rpm before it started to roll forward. If my car was unable to build up vacuum would this be the cause of me running such slow times and losing my brakes?
Burning Brakes
Joined: May 2008
Posts: 860
Likes: 0
From: Stratford Ontario
I ran my car at the track Sunday and noticed my car was running much slower than usual. My car is making about 525 hp off the motor and I was running consistent 13.0-13.4 with 105-106 mph trap speeds. I couldn't not figure out what was wrong until I got to my house afterwards I noticed the 2 brass vac ports off my carb where it mounts on to my manifold were open. I am guessing when it was stored over winter mice chewed the rubber caps off or they somehow came off on their own. Also I was unable to hold myself with the brake to do a burnout before the launch. The pedal went right to the floor and would only hold to 1500 rpm before it started to roll forward. If my car was unable to build up vacuum would this be the cause of me running such slow times and losing my brakes?
Former Vendor
Joined: Nov 2006
Posts: 2,482
Likes: 3
From: Carmichael ca
If your brake pedal is going to the floor, you've got something other than a vacuum problem. Check the fluid level. If its OK, the master cylinder is probably bad.
Two small vacuum leaks wouldn't have a major affect on your ET. With 525HP you should be running much faster than 106.
Two small vacuum leaks wouldn't have a major affect on your ET. With 525HP you should be running much faster than 106.
Pro
Joined: Jun 2006
Posts: 575
Likes: 3
From: Tampa / Ft. Myers FL
Not sure I would go ahead and make a run with a brake pedel that goes to the floor, or was unable to hold the car at 1500 RPMs...
Might make for an interesting event at the other end of the track.
Might make for an interesting event at the other end of the track.
Race Director
Joined: Apr 2007
Posts: 14,062
Likes: 602
From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
I run a 13.93 with 101....on a 270hp motor , so I would for sure think he would be running much faster with 525...
Or Im doing something good.....LOL
But I also have issues holding my brakes when trying to do a line lock type burn out.
Or Im doing something good.....LOL
But I also have issues holding my brakes when trying to do a line lock type burn out.
Burning Brakes
Joined: Jan 2007
Posts: 1,057
Likes: 4
From: Concord Calif
I ran my car at the track Sunday and noticed my car was running much slower than usual. My car is making about 525 hp off the motor and I was running consistent 13.0-13.4 with 105-106 mph trap speeds. I couldn't not figure out what was wrong until I got to my house afterwards I noticed the 2 brass vac ports off my carb where it mounts on to my manifold were open. I am guessing when it was stored over winter mice chewed the rubber caps off or they somehow came off on their own. Also I was unable to hold myself with the brake to do a burnout before the launch. The pedal went right to the floor and would only hold to 1500 rpm before it started to roll forward. If my car was unable to build up vacuum would this be the cause of me running such slow times and losing my brakes?
A couple things here as listed.
How do you know your HP?
What did it run before?
Do you open the hood and look at anything before going to a track!?
""The pedal went right to the floor and would only hold to 1500 rpm before it started to roll forward.""
Something way wrong with someone
running a car all out on a track after the brake pedal goes to the floor!!!!!!!!!!!!!!!!!!!!!!!!!!
: crazy2: Yea I know that sounds harsh but get real here!!!!!
Thread Starter
Instructor
Joined: Jan 2009
Posts: 193
Likes: 0
From: NJ
The brakes were able to stop the car while driving which is why I drove it down the track I am not suicidal lol....but the pedal went right to the floor and was not strong enough to hold the car when I tried to brake stand. I know the cars HP rating because the motor came from my friends car that was dyno'd. When the motor was in his car it ran 11.4 at 120 mph.
