If it wasn't regulated down to a normal level the 4 vane can draw too much vacuum in some cases, add a regulator to it.....
VACUUM PUMP ISSUES
DOSE ANYONE HAVE ANY SUGGUSTIONS , I MADE 4 PASSES ON A NEW COMBO WITH A MOROSO 4 VANE VACUUM PUMP AND VACUUM LOOKED GOOD ACROSS THE LINE ABOUT 14 ,BUT AFTER THE 4 PAS HEARD A NOISE AND THE VACUUM PULL UP THE CENTER OF MY STEEL OIL PAN AND WAS HITTING THE BALANCE WEIGHT ON THE CRANK SHAFT , THE ONLY THING THAT STOPPED IT WAS THE MAIN CAP , ANYBODY THANKS FOR ANY SUGGESTIONS,DARREN
1 - 8 of 8 Posts
HELLO I HAD A MOROSO RELIEF IN THE VALVE COVER
Do you have a guage inside the car so you know it only has 14 inches of vacuum in the motor? I run a Moroso enhanced pump and a Moroso aluminium pan and it has 14 inches and it's been fine 140 passes now. Only thing I can think of is the thing is seeing too much vacuum inside the motor. Maybe the regulator can't vent enough or something? RM
OOPS, I figured it might not of had one.... Not sure now, Your post makes me think you have run data
" across the board " If it is not drawing too much vacuum, the pan just must be too close to deal with it. I would probably pull the pan and see if a stiffiner is plausable in the area of the rub to just keep the two apart.
" across the board " If it is not drawing too much vacuum, the pan just must be too close to deal with it. I would probably pull the pan and see if a stiffiner is plausable in the area of the rub to just keep the two apart.
YES A GUAGE IN THE CAR BUT THE PASS IT POSSIBLE DID IT I DID NOT LOOK AT IT ,CAN THESE PUMPS PULL THIS KIND OF VACUUM
THE PASS SORRY GUYS
My motor will only go to about 16 inches of vacuum. I run mine at 14 max but if you had a well sealed motor it could go lower than that I suppose. RM
1 - 8 of 8 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Yellow Bullet Forums
A forum community dedicated to drag racing drivers and enthusiasts. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more!
Full Forum Listing
Recommended Communities
