burned two oil pumps?

sniperrider · April 27th, 2009, 12:02 AM

after rebuilding the motor and installing a new oil pump both my new pumps have seized. Both have lasted about two miles before noticing oil pressure drop and shutting the car down. I reused the stock pick up but cleaned the hell outta it with the air nozzle from the compressor I took the first seized pump off and tore it apart to find absolutly nothing wrong with the inside besides the fact that its seized what could cause this? The stock oil pump drive shaft and a heavy duty high volume shaft have both twisted and snapped any ideas? Im lost and very irritated

sniperrider · April 27th, 2009, 12:21 AM

anyone any ideas why this keep happening to me i am going to just buy a new pick up and go for lucky number three but wanna make sure there is nothing i can look at before i do it again its not the most enjoyable repair to do...lol

1slo5.0 · April 27th, 2009, 12:42 AM

What kind of pumps are you buying? I'd definitely get a new pick up just to be safe.

sniperrider · April 27th, 2009, 12:47 AM

i tried a melling and clevite the other one they tried to give me was sealed power, i have been getting them from schucks

1slo5.0 · April 27th, 2009, 12:51 AM

Get a standard volume Melling and a new pick up. Get an ARP shaft while you are at it too. Maybe get it from different store as well. Eliminate all possibilities.

sniperrider · April 27th, 2009, 12:57 AM

yea well i had the arp shaft on the second pump and it snapped right at the bottom but i sent it back to summit as a defect and i will pick those up in a few days and let you know how it goes. thanks for the advice

1slo5.0 · April 27th, 2009, 09:16 AM

Originally Posted by sniperrider

yea well i had the arp shaft on the second pump and it snapped right at the bottom but i sent it back to summit as a defect and i will pick those up in a few days and let you know how it goes. thanks for the advice

You broke an ARP shaft????? Impressive!

M L Struck · April 27th, 2009, 09:48 AM

Originally Posted by sniperrider

i tried a melling and clevite the other one they tried to give me was sealed power, i have been getting them from schucks

I had a melling put in my last motor and it took a shit in the dyno room all over everything some kind of spring trouble the shop said it has happened two or three times in the the last couple years and basicly the shop has to eat it so your not the only one.

sniperrider · April 27th, 2009, 12:18 PM

yea that makes me feel better lol i just having rough time. but the arp shaft held up through its thick point but snapped the second it pretruded from the little crevice in the oil pump. ill see if i can get a camera on it the stock shaft looks cooler all twited lol apr is just a quarter inch too short

1slo5.0 · April 27th, 2009, 01:01 PM

Originally Posted by sniperrider

yea that makes me feel better lol i just having rough time. but the arp shaft held up through its thick point but snapped the second it pretruded from the little crevice in the oil pump. ill see if i can get a camera on it the stock shaft looks cooler all twited lol apr is just a quarter inch too short

I've twisted up a stock shaft once when using a hi volume oil pump. It was cool looking, but the engine damage wasn't.

I also broke a generic Sealed Power hardened shaft when the Sealed Power pump locked up after about 20 miles on the road.

I've had good luck with Melling pumps though. I always use a standard volume pump though. No need to pump all of that extra oil to the top of the engine.

ryans88gt · April 27th, 2009, 01:57 PM

Check for pump/shaft/dizzy gear binding. Only thing I can think of.

sniperrider · April 27th, 2009, 02:48 PM

alright i got a camera and once i find batteries ill take pics and ill check the dizzy

April 27th, 2009, 12:02 AM	#1
sniperrider Regular Join Date: Apr 2007 Location: olympia washington Posts: 396 iTrader: 0 reviews	burned two oil pumps? after rebuilding the motor and installing a new oil pump both my new pumps have seized. Both have lasted about two miles before noticing oil pressure drop and shutting the car down. I reused the stock pick up but cleaned the hell outta it with the air nozzle from the compressor I took the first seized pump off and tore it apart to find absolutly nothing wrong with the inside besides the fact that its seized what could cause this? The stock oil pump drive shaft and a heavy duty high volume shaft have both twisted and snapped any ideas? Im lost and very irritated __________________ 90 lx hatch

April 27th, 2009, 12:21 AM	#2
sniperrider Regular Join Date: Apr 2007 Location: olympia washington Posts: 396 iTrader: 0 reviews	anyone any ideas why this keep happening to me i am going to just buy a new pick up and go for lucky number three but wanna make sure there is nothing i can look at before i do it again its not the most enjoyable repair to do...lol __________________ 90 lx hatch

April 27th, 2009, 12:42 AM	#3
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	What kind of pumps are you buying? I'd definitely get a new pick up just to be safe. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

April 27th, 2009, 12:47 AM	#4
sniperrider Regular Join Date: Apr 2007 Location: olympia washington Posts: 396 iTrader: 0 reviews	i tried a melling and clevite the other one they tried to give me was sealed power, i have been getting them from schucks __________________ 90 lx hatch

April 27th, 2009, 12:51 AM	#5
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	Get a standard volume Melling and a new pick up. Get an ARP shaft while you are at it too. Maybe get it from different store as well. Eliminate all possibilities. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

April 27th, 2009, 12:57 AM	#6
sniperrider Regular Join Date: Apr 2007 Location: olympia washington Posts: 396 iTrader: 0 reviews	yea well i had the arp shaft on the second pump and it snapped right at the bottom but i sent it back to summit as a defect and i will pick those up in a few days and let you know how it goes. thanks for the advice __________________ 90 lx hatch

April 27th, 2009, 12:18 PM	#9
sniperrider Regular Join Date: Apr 2007 Location: olympia washington Posts: 396 iTrader: 0 reviews	yea that makes me feel better lol i just having rough time. but the arp shaft held up through its thick point but snapped the second it pretruded from the little crevice in the oil pump. ill see if i can get a camera on it the stock shaft looks cooler all twited lol apr is just a quarter inch too short __________________ 90 lx hatch Last edited by sniperrider; April 27th, 2009 at 12:28 PM.

April 27th, 2009, 01:57 PM	#11
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	Check for pump/shaft/dizzy gear binding. Only thing I can think of. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

April 27th, 2009, 02:48 PM	#12
sniperrider Regular Join Date: Apr 2007 Location: olympia washington Posts: 396 iTrader: 0 reviews	alright i got a camera and once i find batteries ill take pics and ill check the dizzy __________________ 90 lx hatch

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