lost oil pressure durring first round

Old 08-31-2009, 03:31 AM
  #1  
chpseat987
Member
CRAFTSMAN
Thread Starter
 
Join Date: Jun 2008
Posts: 57
Default lost oil pressure durring first round

Anyone help please this last friday i lost oil pressure durring my first round, i shut the car down and got it home and apart, the oil pickup tube came loose from th e pump, i pulled the main and rod bearings and the mains are good but the rod bearings are trashed, would it be safe to replace these bearings and emery cloth the crank and keep running? the crank looks really good i caught it in time there are only a small mark on one journal. i only have 3 races left this season. :?:
chpseat987 is offline  
Old 08-31-2009, 06:28 AM
  #2  
TopspeedLowet
Senior Member
DYNO OPERATOR
 
Join Date: Apr 2008
Posts: 504
Default

The engine oil passages are full of your old bearings and such. if you completely tear down the engine and re clean the oil passages, pistons ring lands, etc. and re check all machine work, you may be able to run again with out problems if you keep oil pressure in the future. The crank will require at the least a polishing on a crank grinder to keep the journals round and true. Hand polishing is not advised ever on any bearing surface. Sorry about the un welded pick up. Weld the next one on.
Bruce
TopspeedLowet is offline  
Old 08-31-2009, 07:09 AM
  #3  
TS1955
Senior Member
DYNO OPERATOR
 
Join Date: Aug 2007
Location: Lost Creek, WV
Posts: 533
Default

I agree with Topspeed...I would rather sit out a couple of races than explode my motor. Clean everything up, polish the crank and weld the pickup on a new pump. JMO

TS1955
TS1955 is offline  
Old 08-31-2009, 07:26 AM
  #4  
OneBadGMC
Senior Member
RACING JUNKIE
 
Join Date: Sep 2007
Location: Belleville, IL
Posts: 658
Default

On a side note... A pickup falling out can be a sign of detonation in the motor. Might wanna knock a couple degrees of timing out of it, or buy better fuel.
OneBadGMC is offline  
Old 08-31-2009, 09:34 AM
  #5  
oldandtired
Senior Member
RACING JUNKIE
 
oldandtired's Avatar
 
Join Date: Dec 2008
Location: Sugar Hill, GA
Posts: 1,365
Default

Originally Posted by OneBadGMC
On a side note... A pickup falling out can be a sign of detonation in the motor. Might wanna knock a couple degrees of timing out of it, or buy better fuel.
x2. You might never hear it and the knock hits the rear main pretty hard. Dave
oldandtired is offline  
Old 08-31-2009, 10:05 AM
  #6  
chpseat987
Member
CRAFTSMAN
Thread Starter
 
Join Date: Jun 2008
Posts: 57
Default

It is a bolt in pick up the bolt came out of the pump and the tube came out as well. i have corrected from that ever happening again i drilled the bolt heads and safety wired them together. i really appreciate everyones help. the crank has zero damage as well as the bearings on the main, but the rod bearings ouch but they never wor through the brass or copper part of the bearing with very little next to no damage n the crank my machinist thinks i will be ok to touch it up with supper fine emery cloth and replace all bearings even the mains.
chpseat987 is offline  
Old 08-31-2009, 02:37 PM
  #7  
TheYellaBrick
Senior Member
RACING JUNKIE
 
TheYellaBrick's Avatar
 
Join Date: Mar 2008
Location: Emmett, Idaho
Posts: 7,334
Default


Don't be surprised if it goes BANG....... AND..do NOT use a FRAM filter.....
TheYellaBrick is offline  
Old 08-31-2009, 02:52 PM
  #8  
DirkaDirka
Senior Member
RACING JUNKIE
 
DirkaDirka's Avatar
 
Join Date: Jul 2009
Location: Clarksville, TN
Posts: 1,922
Default

Originally Posted by DrivingMissDD

Don't be surprised if it goes BANG....... AND..do NOT use a FRAM filter.....
I gotta ask you this. I seen you mention FRAM oil filters a few times now. What is the deal with you and FRAM oil filters?? I am just curious?
DirkaDirka is offline  
Old 08-31-2009, 05:43 PM
  #9  
bbchevy
Senior Member
RACING JUNKIE
 
Join Date: Mar 2003
Location: Fountain,MICHIGAN
Posts: 856
Default ??

Just KEEP this in MIND???
The Material that use to be on the Bearings,are Still somewhere in the MOTOR!!!
Hope you Take the WRITE ROAD!
Later
G 8)
bbchevy is offline  
Old 09-01-2009, 03:28 AM
  #10  
TS1955
Senior Member
DYNO OPERATOR
 
Join Date: Aug 2007
Location: Lost Creek, WV
Posts: 533
Default

Originally Posted by DirkaDirka
Originally Posted by DrivingMissDD

Don't be surprised if it goes BANG....... AND..do NOT use a FRAM filter.....
I gotta ask you this. I seen you mention FRAM oil filters a few times now. What is the deal with you and FRAM oil filters?? I am just curious?
It's not just DrivingMissDD that has a problem with fram filters. Just about every racer on here doesn't like Fram filters. TOOO many bad issues with them.

TS1955
TS1955 is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -