Oil pump woes!!!!
Thread Starter
Racer
Joined: Oct 2004
Posts: 480
Likes: 16
From: chicago il
Oil pump woes!!!!
Well im thinking i have a pinched O ring in the oil pump after my heads/cam install. At start up I had 50-60 at idle and would go to 80 psi with a blip of the throttle and the pressure has been slowly decreasing.. Now at idle im at 30 psi and it hardly raises from 2k to 5k I was thinking maybe a bad oil sensor but unlikely.. Also i noticed my valvetrain has been getting louder and louder.. I hate 2nd guessing myself so i took it all apart tonight and i got stuck on my slp pulley anyone know what size the threaded holes are?? I have a matco pulley removal kit with various bolt sizes but none seem to fit.. Anyone happen to know off-hand what size/pitch these are?
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
My sons camaro did the same thing after a HCI swap last year. It turned out after we bolted everything back together we pinched the o-ring. His car was making a very loud ticking noise. and the oil pressure would jump up and down a few psi at idle. Wound up going to the dealer and getting a new o-ring and installed it being very careful this time to ensure the o-ring went in correclty. He has great oil pressure now and no more problems.
Here is the o-ring we took out and the new o-ring beside it. Be prepared for sticker shock when you buy the o-ring. Seems like it was around $6 or $7.
Here is the o-ring we took out and the new o-ring beside it. Be prepared for sticker shock when you buy the o-ring. Seems like it was around $6 or $7.
Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
Well im thinking i have a pinched O ring in the oil pump after my heads/cam install. At start up I had 50-60 at idle and would go to 80 psi with a blip of the throttle and the pressure has been slowly decreasing.. Now at idle im at 30 psi and it hardly raises from 2k to 5k I was thinking maybe a bad oil sensor but unlikely.. Also i noticed my valvetrain has been getting louder and louder.. I hate 2nd guessing myself so i took it all apart tonight and i got stuck on my slp pulley anyone know what size the threaded holes are?? I have a matco pulley removal kit with various bolt sizes but none seem to fit.. Anyone happen to know off-hand what size/pitch these are?
Melting Slicks
Joined: Jun 2007
Posts: 2,172
Likes: 1
From: Sartell Minnesota
i have a spare one i'll mail to ya
i bought 2 when i did my build in case i screwed one up. I should probably keep it but it's somewhere in my tool box at my dads shop. It might be faster to get from the dealer though
i bought 2 when i did my build in case i screwed one up. I should probably keep it but it's somewhere in my tool box at my dads shop. It might be faster to get from the dealer though
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
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Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Team Owner
Joined: Nov 1999
Posts: 26,679
Likes: 17
From: This vette goes to 11 Milford MA
St. Jude Donor '03-'05
Did the same thing. Finished H/C swap, drove and hour to the tuner and an hour back, 3 hours to CT to Lime Rock, and then halfway through the day lost pressure. Drove the car home and by the time I was in my driveway, I had almost zero pressure and the motor sounded like a room full of typewriters. I pulled it apart and found that the O-ring was pinched. When I went to the SLP chain with the shims, it makes the pickup sit a little different. You need to bolt the tube to the motor, and then bolt the retainer to the front and not the other way around.
Thread Starter
Racer
Joined: Oct 2004
Posts: 480
Likes: 16
From: chicago il
I installed a new cam retainer plate but it was the same as the old one.
I loctited the hell out of them, I had this horrible feeling the day after i first installed the cam that i forgot to torque the cam retainer plate bolts, next time i go with my gut!!!!!!
I loctited the hell out of them, I had this horrible feeling the day after i first installed the cam that i forgot to torque the cam retainer plate bolts, next time i go with my gut!!!!!!
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
Thread Starter
Racer
Joined: Oct 2004
Posts: 480
Likes: 16
From: chicago il
Tony your so right lol it was like 20 out that day!!! Man im glad i tore it down it could have been real ugly the bolts had just started rubbing the cam gear Hey Lucky I do have a mechanical gauge also..
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
It's been a really cold winter this year. I had the propane heater running alot this year when I've been out working in the garage because of the cold.
I cant wait for Spring
Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
Melting Slicks
Joined: Oct 2007
Posts: 2,464
Likes: 2
From: Cedarburg, WI
How often is a new cam retainer plate needed? I am planning a head/cam/intake swap and hadn't planned on swapping but I did buy ARP bolts for the retainer plate. If I were to buy the new plate I can't use the ARP's. My car only has a little over 10,000 miles so it should be fine to reuse, correct?
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
New plate is not the same. It has countersunk holes and flat head torx screws. The plate is worn if the cam had worn into it or the crank sprocket. Here is a good read on it: Link
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
New plate is not the same. It has countersunk holes and flat head torx screws. The plate is worn if the cam had worn into it or the crank sprocket. Here is a good read on it: Link