Damn oil pumps !!!!!!!!!!!!!

5ohCOUPE · 06-18-2002, 09:28 PM

Another oil pump locked up on me !!!!!! This time I wasnt paying attention to my guages and I burned up the motor. Granted it had 178K on it but if I was looking at my guages I could have turned it off in time and put a new pump in it. I would have been good to go for at least over 200k. Anyone know why the oil pumps lock up so much???? I put a melling high volume in it and it was my second one that locked up,

lx mike · 06-18-2002, 10:29 PM

Are you sure it's the pump and not the pump driveshaft??

OzRuss · 06-19-2002, 12:26 AM

I have problems with my oil pressure getting extremely high on long drives, its an old motor as with 5ohCOUPE.

Which Im told can twist the shaft from the distributor?

Not sure if this help but I though I'd put the idea on the table.

fiveohpatrol · 06-19-2002, 12:33 AM

You are wasting your money and using up more horsepower by using a high volume pump.
The stock one flows plenty of oil.

5ohCOUPE · 06-19-2002, 10:46 AM

The driveshaft from the pump is twisting like a pretzel because the pump locking up. After I pull the pump out the pump wont spin even if I put a breaker bar on it. I tried the strong oil pump shaft before and it just snapped like a twig instead of twisting. I think I will be ok when I put my new short block in.

302 LX Eric · 06-19-2002, 02:12 PM

Does anyone know what could be causing these pumps to 'lock up'? I'm curious.

Thanks,
E

fiveohpatrol · 06-19-2002, 02:45 PM

Have you taken any of the pumps apart to see if any small foreign objects are getting in there to lock it up?

I've had one pump lock up on me last year, and it turned out to be one of the very tiny metal spacers that ford puts in the FACTORY valve cover gaskets that finally made its way down into the pump. I think it was lodged somewhere in the head, and then when I pulled the heads off to change the gaskets, it loosened it up and decided to head down into the pump

Are you using the same brand of pump everytime? If so then it could be a manufactures defect

5ohCOUPE · 06-19-2002, 06:33 PM

Ive been using the melling HV oil pumps. It might just be a high mileage engine thing. I had just changed the oil too so I know it wasnt because of old oil. Who knows what is going on, I just know that im gonna put a dummy light in my car for the oil pressure so if it happens again ill see a big red light in my face.

vetteeatr · 06-19-2002, 08:13 PM

Ahh yes the ol oil pump.

I remember when i bought the ol car and the second day i had it a lifter scattered and a damn mini spring worked its way to the damn pump and snap goes the shaft. I imaigne somethign just got down there I mean there are billions of little small pieces most of us havent even seen that some how come into the picture at one time or another.

DRASTiK · 06-20-2002, 12:05 AM

I pulled a twizler looking pump shaft out of my motor once, so right then and there I replaced the shaft with a heavy duty one, and I'm also looking into a warning light to tell me when things like that happen, just in case I'm not paying close attention to the gauge when it drops. Just food for thought I guess.

OzRuss · 06-20-2002, 01:39 AM

Anyone able to tell my why my oil pressure rises on long straight drives?, old engine with a factory pump. It goes away when I take my foot of the gas but comes back soon after.

fiveohpatrol · 06-20-2002, 02:13 AM

OzRuss, your oil pressure will always be higher when your engine is revving higher. The oil pump is spun by the bottom of the distributor. so when your engine spins faster, so does the pump, causing more pressure

OzRuss · 06-20-2002, 02:21 AM

True. However I have a 2.79 diff and a 0.78 5th speed on the box so at 110KM/h (about 68MPH) the motor spins about 1500 RPM.

It doesnt build up when Im reving hard only when Im driving long straight cruizing roads.

Any other thoughs?

Oldschoolpony · 06-20-2002, 09:33 AM

I had 3 pumps go on my 347 within 2 months. Until the shop that built my motor used what they called a blue printed oil pump. ( i guess they sent it to the machine shop) Now, I can rev my 347 to 7K all day long (not that I do that)

06-18-2002, 09:28 PM	#1
5ohCOUPE Registered Member Join Date: Sep 2001 Location: ORANGE PARK FL. USA Posts: 208	Damn oil pumps !!!!!!!!!!!!! Another oil pump locked up on me !!!!!! This time I wasnt paying attention to my guages and I burned up the motor. Granted it had 178K on it but if I was looking at my guages I could have turned it off in time and put a new pump in it. I would have been good to go for at least over 200k. Anyone know why the oil pumps lock up so much???? I put a melling high volume in it and it was my second one that locked up, __________________ 91 LX COUPE, 3.73 gears, 2 1/2 inch H-Pipe, 1 5/8 MAC long tube headers, 73 MM C&L MAF, 70 MM MAC TB, LUNATI cam,1.7 TFS Rockers, TFS Track Heat heads, TFS Track Heat intake, T5 with PRO 5.0 shifter, Griffin aluminum radiator, Fluid Damper, SSM traction bars, 190 GPH in tank fuel pump. And more to come.

06-18-2002, 10:29 PM	#2
lx mike Undescribable Join Date: Sep 1998 Location: Ft Myers Fla Posts: 1,539	Are you sure it's the pump and not the pump driveshaft?? __________________ Rice Haters Club Member #101

06-19-2002, 12:26 AM	#3
OzRuss Registered Member Join Date: Jan 1999 Location: Perth, Australia Posts: 37	I have problems with my oil pressure getting extremely high on long drives, its an old motor as with 5ohCOUPE. Which Im told can twist the shaft from the distributor? Not sure if this help but I though I'd put the idea on the table. __________________ 1986 Australian Ford Farmont Ghia. 85 5.0L, s/steel with fat K&N inlet, mild ported heads, extractors, 2 1/2" y-piped exhaust, 5spd supra manual box.

06-19-2002, 12:33 AM	#4
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	You are wasting your money and using up more horsepower by using a high volume pump. The stock one flows plenty of oil. __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

06-19-2002, 10:46 AM	#5
5ohCOUPE Registered Member Join Date: Sep 2001 Location: ORANGE PARK FL. USA Posts: 208	The driveshaft from the pump is twisting like a pretzel because the pump locking up. After I pull the pump out the pump wont spin even if I put a breaker bar on it. I tried the strong oil pump shaft before and it just snapped like a twig instead of twisting. I think I will be ok when I put my new short block in. __________________ 91 LX COUPE, 3.73 gears, 2 1/2 inch H-Pipe, 1 5/8 MAC long tube headers, 73 MM C&L MAF, 70 MM MAC TB, LUNATI cam,1.7 TFS Rockers, TFS Track Heat heads, TFS Track Heat intake, T5 with PRO 5.0 shifter, Griffin aluminum radiator, Fluid Damper, SSM traction bars, 190 GPH in tank fuel pump. And more to come.

06-19-2002, 02:12 PM	#6
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	Does anyone know what could be causing these pumps to 'lock up'? I'm curious. Thanks, E __________________ 1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60'

06-19-2002, 02:45 PM	#7
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	Have you taken any of the pumps apart to see if any small foreign objects are getting in there to lock it up? I've had one pump lock up on me last year, and it turned out to be one of the very tiny metal spacers that ford puts in the FACTORY valve cover gaskets that finally made its way down into the pump. I think it was lodged somewhere in the head, and then when I pulled the heads off to change the gaskets, it loosened it up and decided to head down into the pump Are you using the same brand of pump everytime? If so then it could be a manufactures defect __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

06-19-2002, 06:33 PM	#8
5ohCOUPE Registered Member Join Date: Sep 2001 Location: ORANGE PARK FL. USA Posts: 208	Ive been using the melling HV oil pumps. It might just be a high mileage engine thing. I had just changed the oil too so I know it wasnt because of old oil. Who knows what is going on, I just know that im gonna put a dummy light in my car for the oil pressure so if it happens again ill see a big red light in my face. __________________ 91 LX COUPE, 3.73 gears, 2 1/2 inch H-Pipe, 1 5/8 MAC long tube headers, 73 MM C&L MAF, 70 MM MAC TB, LUNATI cam,1.7 TFS Rockers, TFS Track Heat heads, TFS Track Heat intake, T5 with PRO 5.0 shifter, Griffin aluminum radiator, Fluid Damper, SSM traction bars, 190 GPH in tank fuel pump. And more to come.

06-19-2002, 08:13 PM	#9
vetteeatr Registered Member Join Date: Apr 2001 Location: Olney, Illinois, USA Posts: 212	LOL memories Ahh yes the ol oil pump. I remember when i bought the ol car and the second day i had it a lifter scattered and a damn mini spring worked its way to the damn pump and snap goes the shaft. I imaigne somethign just got down there I mean there are billions of little small pieces most of us havent even seen that some how come into the picture at one time or another. __________________ !988 GT World Windsor Sr.'s, Harland sharpe rockers, 3.73 gears, pulleys, no ac, hurst shifter, 10:1 pistons, BBK full length headers and H-pipe with flows. Under extensive work for porting and fly cutting to accept my new cam and to match my soon to have systemax intake DROOL Best E.T. 13.20 with edelbrock RPM intake and 70mm TB

06-20-2002, 12:05 AM	#10
DRASTiK Registered Member Join Date: May 2001 Location: Yuma, AZ Posts: 536	I pulled a twizler looking pump shaft out of my motor once, so right then and there I replaced the shaft with a heavy duty one, and I'm also looking into a warning light to tell me when things like that happen, just in case I'm not paying close attention to the gauge when it drops. Just food for thought I guess. __________________ Dave 88 GT - 13.4@106 on street tires (2.2 60ft) My Stang RHC member #75 My stang is FOR SALE!!

06-20-2002, 01:39 AM	#11
OzRuss Registered Member Join Date: Jan 1999 Location: Perth, Australia Posts: 37	Anyone able to tell my why my oil pressure rises on long straight drives?, old engine with a factory pump. It goes away when I take my foot of the gas but comes back soon after. __________________ 1986 Australian Ford Farmont Ghia. 85 5.0L, s/steel with fat K&N inlet, mild ported heads, extractors, 2 1/2" y-piped exhaust, 5spd supra manual box.

06-20-2002, 02:13 AM	#12
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	OzRuss, your oil pressure will always be higher when your engine is revving higher. The oil pump is spun by the bottom of the distributor. so when your engine spins faster, so does the pump, causing more pressure __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

06-20-2002, 02:21 AM	#13
OzRuss Registered Member Join Date: Jan 1999 Location: Perth, Australia Posts: 37	True. However I have a 2.79 diff and a 0.78 5th speed on the box so at 110KM/h (about 68MPH) the motor spins about 1500 RPM. It doesnt build up when Im reving hard only when Im driving long straight cruizing roads. Any other thoughs? __________________ 1986 Australian Ford Farmont Ghia. 85 5.0L, s/steel with fat K&N inlet, mild ported heads, extractors, 2 1/2" y-piped exhaust, 5spd supra manual box.

06-20-2002, 09:33 AM	#14
Oldschoolpony Registered Member Join Date: Mar 2001 Location: Gainsville,Fl Posts: 229	Oil Pump I had 3 pumps go on my 347 within 2 months. Until the shop that built my motor used what they called a blue printed oil pump. ( i guess they sent it to the machine shop) Now, I can rev my 347 to 7K all day long (not that I do that) __________________ http://www.mustangworks.com/cgi-bin/...splay.cgi?1546

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