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Author Topic:   oil pressure
racer s
Dirt Forum Racer

Total posts: 83
posted February 07, 2005 08:48 PM  
this is on my tow vehicle/daily driver a 1995 chevy with a 350 its done this since I bought it when I start it it nocks a little cause oil pressure takes a sec or so to come up then it's fine any ideas? I have talked to others that had same thing going on but not sure what to do?

joeltjen
Dirt Maniac

Total posts: 182
posted February 07, 2005 09:10 PM  
i'm not sure but i think this is the reason they changed the AC filter (don't remember the new number) to include an anti-drainback valve inside the filter. try useing one of the new AC filters and see if this helps. we use the new style on our modified.

Kent
Dirt Maniac

Total posts: 102
posted February 08, 2005 02:29 AM  
My crew cheif when he came on board said for me to lose the Fram filter because he said it worked too good and could potentially starve the motor from getting adequate oil pressure at high rpm. He told me to use an AC Delco #1218 filter and I have had absolutely no problems associated with oil! By the way , this is for a SBC! I also change my oil everyother weekend on my race car so hopefully there is never anything in the oil to cause any type of a blockage. Good Luck!

akadirtracer7
Dirt Freak

Total posts: 217
posted February 12, 2005 10:16 PM  
how many miles are on it ? has it ever had intake gaskets leaking coolant in the oil could be worn bearings to.

ruggs66
Dirt Maniac

Total posts: 193
posted February 13, 2005 10:27 AM  
are you sure its the bearings & not the pistons?

I have seen many 90s GM motors rattle the pistons alittle on startup & then the noise goes away.

If its the bearings knocking I would think it wouldn't go away & possibly get worse over time.

just an idea....

racer s
Dirt Forum Racer

Total posts: 83
posted February 13, 2005 04:54 PM  
yes it does go away just does at first startup then its gone thanx for all replies

racer17j
Dirt Forum Champ
Total posts: 5390
posted February 13, 2005 05:04 PM  
sounds like wrist pins to me

chomme
Dirt Freak

Total posts: 300
posted February 13, 2005 06:46 PM  
Is this 2wd or 4wd? If 4wd, figure you've got the adapter and the lines from and to the cooler to start flowing. Definitely use a filter with the anti-drainback valve.

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