Oil Pressure issues on new motor...

Hozer 88GTConv · 07-08-2005, 06:27 PM

The gauge fluctuates from 0-30psi erratically. I am breaking in my new 331 and I know it is full of oil and runs very strong.
I think it is the old pressure sender that is the problem, the wire came into contact with the header off of number 5.
Does anyone have/know/recommend a mechanical pressure sender that I can install directly into the cockpit?
I need precise oil pressure measurements as I plan on installing a vortech as soon as break in is complete.
Thanks in advance...

Gearhead999 · 07-08-2005, 08:33 PM

When you put a "mechanical" gauge in there are two types.
1. Copper/plastic line going directly to gauge
2. Same as above

Hozer 88GTConv · 07-22-2005, 05:02 PM

r and r'd the sender and viola! even with the "crappy" gauge, it is reading 60+ psi under hard acceleration and 30 psi at idle.
don't think it's so bad, of course it is brand new. we'll see in a few months I guess.

ols0051 · 07-23-2005, 11:56 AM

I put a mechanical autometer guage in a cage on the dash. just ran braided line from the end of the extender tube on the old factory location. Seems to work perfect.

~The Jester~ · 07-23-2005, 05:31 PM

ALL of my gauges are mechanical. Just don't trust the electrical sender units/gauges to monitor my VITAL engine stats. Oil pressure drops, and in the back of your mind you think "Did I lose oil? Or is it a wire, or sender unit?" NOPE. Just not worth it. I have waaaaay too much B/S/T in my engine to be worrying about that kinda crap. Go mechanical, and be done with it.

Hozer 88GTConv · 07-23-2005, 09:13 PM

Yeah, I wanted to keep a clean cockpit and not have gauges here and there. But I guess it's time to look at gauge pods. I agree, I have too much invested to guess at stock gauge accuracy.

ols0051 · 07-23-2005, 09:24 PM

Look into that 2 gage center vent cage. Found mine at summit. it is made by autometer. Seems to good quality and I think they give a nice look..

Hozer 88GTConv · 07-23-2005, 09:27 PM

will do, it doesn't completely close off the vent does it? I like the sound of something flush.

rwhite65 · 07-24-2005, 08:16 AM

My buddy has the automeeter mechanicals in his 90 with a 408. It is the dual cage that goes in the vents, and it does not totally block the vent. Very nice, if I do a fox body, I will be using that set-up.
Ryan

07-08-2005, 06:27 PM	#1
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Oil Pressure issues on new motor... The gauge fluctuates from 0-30psi erratically. I am breaking in my new 331 and I know it is full of oil and runs very strong. I think it is the old pressure sender that is the problem, the wire came into contact with the header off of number 5. Does anyone have/know/recommend a mechanical pressure sender that I can install directly into the cockpit? I need precise oil pressure measurements as I plan on installing a vortech as soon as break in is complete. Thanks in advance... __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

07-08-2005, 08:33 PM	#2
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: Oil Pressure issues on new motor... When you put a "mechanical" gauge in there are two types. 1. Copper/plastic line going directly to gauge 2. Same as above __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

07-22-2005, 05:02 PM	#3
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Re: Oil Pressure issues on new motor... r and r'd the sender and viola! even with the "crappy" gauge, it is reading 60+ psi under hard acceleration and 30 psi at idle. don't think it's so bad, of course it is brand new. we'll see in a few months I guess. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

07-23-2005, 11:56 AM	#4
ols0051 Registered Member Join Date: Sep 2002 Location: cent.wis Posts: 203	Re: Oil Pressure issues on new motor... I put a mechanical autometer guage in a cage on the dash. just ran braided line from the end of the extender tube on the old factory location. Seems to work perfect.

07-23-2005, 05:31 PM	#5
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: Oil Pressure issues on new motor... ALL of my gauges are mechanical. Just don't trust the electrical sender units/gauges to monitor my VITAL engine stats. Oil pressure drops, and in the back of your mind you think "Did I lose oil? Or is it a wire, or sender unit?" NOPE. Just not worth it. I have waaaaay too much B/S/T in my engine to be worrying about that kinda crap. Go mechanical, and be done with it. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

07-23-2005, 09:13 PM	#6
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Re: Oil Pressure issues on new motor... Yeah, I wanted to keep a clean cockpit and not have gauges here and there. But I guess it's time to look at gauge pods. I agree, I have too much invested to guess at stock gauge accuracy. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

07-23-2005, 09:24 PM	#7
ols0051 Registered Member Join Date: Sep 2002 Location: cent.wis Posts: 203	Re: Oil Pressure issues on new motor... Look into that 2 gage center vent cage. Found mine at summit. it is made by autometer. Seems to good quality and I think they give a nice look..

07-23-2005, 09:27 PM	#8
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Re: Oil Pressure issues on new motor... will do, it doesn't completely close off the vent does it? I like the sound of something flush. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

07-24-2005, 08:16 AM	#9
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	Re: Oil Pressure issues on new motor... My buddy has the automeeter mechanicals in his 90 with a 408. It is the dual cage that goes in the vents, and it does not totally block the vent. Very nice, if I do a fox body, I will be using that set-up. Ryan __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

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