Mike Romain

Shaggie wrote:
>
> "c" <c@me.org> wrote in news:KL%kc.13933$u_4.5819@twister.rdc-kc.rr.com:
>
> > Yup, a very common problem with electric oil pressure guages. I keep
> > an el cheapo mechanical guage around to test engines with.
> >
> > Chris
>
> The gauge I have now is a mechanical one with the high-pressure oil line
> running from the "sender" to the gauge. It is a cheap gauge so I suppose
> the gauge itself could be bad.

What are you running hot and cold for pressure?

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Shaggie

Mike Romain <romainm@sympatico.ca> wrote in
news:4094EC8B.91F62890@sympatico.ca:

> Shaggie wrote:
>>
>> "c" <c@me.org> wrote in
>> news:KL%kc.13933$u_4.5819@twister.rdc-kc.rr.com:
>>
>> > Yup, a very common problem with electric oil pressure guages. I
>> > keep an el cheapo mechanical guage around to test engines with.
>> >
>> > Chris
>>
>> The gauge I have now is a mechanical one with the high-pressure oil
>> line running from the "sender" to the gauge. It is a cheap gauge so
>> I suppose the gauge itself could be bad.
>
> What are you running hot and cold for pressure?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>

When I first start it up and it's cold I can hit 60psi but at idle when
it's hot (210 degrees or so) it's down around 8psi. Even at 50mph or so
when it's hot it only hits about 16psi or so. Sound pretty bad?

--

I can hammer it back into shape later...
:wq!

Shaggie

Mike Romain <romainm@sympatico.ca> wrote in
news:4094EC8B.91F62890@sympatico.ca:

> Shaggie wrote:
>>
>> "c" <c@me.org> wrote in
>> news:KL%kc.13933$u_4.5819@twister.rdc-kc.rr.com:
>>
>> > Yup, a very common problem with electric oil pressure guages. I
>> > keep an el cheapo mechanical guage around to test engines with.
>> >
>> > Chris
>>
>> The gauge I have now is a mechanical one with the high-pressure oil
>> line running from the "sender" to the gauge. It is a cheap gauge so
>> I suppose the gauge itself could be bad.
>
> What are you running hot and cold for pressure?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>

When I first start it up and it's cold I can hit 60psi but at idle when
it's hot (210 degrees or so) it's down around 8psi. Even at 50mph or so
when it's hot it only hits about 16psi or so. Sound pretty bad?

--

I can hammer it back into shape later...
:wq!

Shaggie

Mike Romain <romainm@sympatico.ca> wrote in
news:4094EC8B.91F62890@sympatico.ca:

> Shaggie wrote:
>>
>> "c" <c@me.org> wrote in
>> news:KL%kc.13933$u_4.5819@twister.rdc-kc.rr.com:
>>
>> > Yup, a very common problem with electric oil pressure guages. I
>> > keep an el cheapo mechanical guage around to test engines with.
>> >
>> > Chris
>>
>> The gauge I have now is a mechanical one with the high-pressure oil
>> line running from the "sender" to the gauge. It is a cheap gauge so
>> I suppose the gauge itself could be bad.
>
> What are you running hot and cold for pressure?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>

When I first start it up and it's cold I can hit 60psi but at idle when
it's hot (210 degrees or so) it's down around 8psi. Even at 50mph or so
when it's hot it only hits about 16psi or so. Sound pretty bad?

--

I can hammer it back into shape later...
:wq!

Shaggie

Mike Romain <romainm@sympatico.ca> wrote in
news:4094EC8B.91F62890@sympatico.ca:

> Shaggie wrote:
>>
>> "c" <c@me.org> wrote in
>> news:KL%kc.13933$u_4.5819@twister.rdc-kc.rr.com:
>>
>> > Yup, a very common problem with electric oil pressure guages. I
>> > keep an el cheapo mechanical guage around to test engines with.
>> >
>> > Chris
>>
>> The gauge I have now is a mechanical one with the high-pressure oil
>> line running from the "sender" to the gauge. It is a cheap gauge so
>> I suppose the gauge itself could be bad.
>
> What are you running hot and cold for pressure?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>

When I first start it up and it's cold I can hit 60psi but at idle when
it's hot (210 degrees or so) it's down around 8psi. Even at 50mph or so
when it's hot it only hits about 16psi or so. Sound pretty bad?

--

I can hammer it back into shape later...
:wq!

Lee Ayrton

The 304's oil pump is part of the timing cover. Don't forget to prime it
-- I forgot and ended up priming it by squirting oil down the oil filter
passage with a squirt can. It worked.


On Sun, 2 May 2004, serg wrote:

>
> well, it should be pretty easy-you'll probably have to drop the oil pan to
> get at it. a couple of screws will be holding it in (if it's anything like
> the 258). try looking at quadratec, 4wd or tellico4x4. call around to napa
> too. have you checked the sending unit? that maybe your problem...
>
> "Shaggie" <travist34@snotmail.com> wrote in message
> news:c70j90$gu63o$1@ID-163201.news.uni-berlin.de...
> > Hi all. I have a '76 CJ-5 with the 304 engine. I recently did quite a
> bit
> > of work to it, replacing lifters, intake, carb, and ignition. Now it
> > starts right up and runs GREAT. Idles great, good power, etc, etc... BUT
> > my oil gauge is reading pretty low pressure and it worries me. I don't
> > know much about the history of this Jeep at all so I was wondering a
> couple
> > of things. First of all can anyone point me to a source online to buy a
> > high-volume oil pump for my Jeep, and secondly how hard is it to swap out
> > an oil pump on my engine? Thank you in advance for input.
> >
> > --
> >
> > I can hammer it back into shape later...
> > :wq!
>
>
>

Lee Ayrton

The 304's oil pump is part of the timing cover. Don't forget to prime it
-- I forgot and ended up priming it by squirting oil down the oil filter
passage with a squirt can. It worked.


On Sun, 2 May 2004, serg wrote:

>
> well, it should be pretty easy-you'll probably have to drop the oil pan to
> get at it. a couple of screws will be holding it in (if it's anything like
> the 258). try looking at quadratec, 4wd or tellico4x4. call around to napa
> too. have you checked the sending unit? that maybe your problem...
>
> "Shaggie" <travist34@snotmail.com> wrote in message
> news:c70j90$gu63o$1@ID-163201.news.uni-berlin.de...
> > Hi all. I have a '76 CJ-5 with the 304 engine. I recently did quite a
> bit
> > of work to it, replacing lifters, intake, carb, and ignition. Now it
> > starts right up and runs GREAT. Idles great, good power, etc, etc... BUT
> > my oil gauge is reading pretty low pressure and it worries me. I don't
> > know much about the history of this Jeep at all so I was wondering a
> couple
> > of things. First of all can anyone point me to a source online to buy a
> > high-volume oil pump for my Jeep, and secondly how hard is it to swap out
> > an oil pump on my engine? Thank you in advance for input.
> >
> > --
> >
> > I can hammer it back into shape later...
> > :wq!
>
>
>

Lee Ayrton

The 304's oil pump is part of the timing cover. Don't forget to prime it
-- I forgot and ended up priming it by squirting oil down the oil filter
passage with a squirt can. It worked.


On Sun, 2 May 2004, serg wrote:

>
> well, it should be pretty easy-you'll probably have to drop the oil pan to
> get at it. a couple of screws will be holding it in (if it's anything like
> the 258). try looking at quadratec, 4wd or tellico4x4. call around to napa
> too. have you checked the sending unit? that maybe your problem...
>
> "Shaggie" <travist34@snotmail.com> wrote in message
> news:c70j90$gu63o$1@ID-163201.news.uni-berlin.de...
> > Hi all. I have a '76 CJ-5 with the 304 engine. I recently did quite a
> bit
> > of work to it, replacing lifters, intake, carb, and ignition. Now it
> > starts right up and runs GREAT. Idles great, good power, etc, etc... BUT
> > my oil gauge is reading pretty low pressure and it worries me. I don't
> > know much about the history of this Jeep at all so I was wondering a
> couple
> > of things. First of all can anyone point me to a source online to buy a
> > high-volume oil pump for my Jeep, and secondly how hard is it to swap out
> > an oil pump on my engine? Thank you in advance for input.
> >
> > --
> >
> > I can hammer it back into shape later...
> > :wq!
>
>
>

Lee Ayrton

The 304's oil pump is part of the timing cover. Don't forget to prime it
-- I forgot and ended up priming it by squirting oil down the oil filter
passage with a squirt can. It worked.


On Sun, 2 May 2004, serg wrote:

>
> well, it should be pretty easy-you'll probably have to drop the oil pan to
> get at it. a couple of screws will be holding it in (if it's anything like
> the 258). try looking at quadratec, 4wd or tellico4x4. call around to napa
> too. have you checked the sending unit? that maybe your problem...
>
> "Shaggie" <travist34@snotmail.com> wrote in message
> news:c70j90$gu63o$1@ID-163201.news.uni-berlin.de...
> > Hi all. I have a '76 CJ-5 with the 304 engine. I recently did quite a
> bit
> > of work to it, replacing lifters, intake, carb, and ignition. Now it
> > starts right up and runs GREAT. Idles great, good power, etc, etc... BUT
> > my oil gauge is reading pretty low pressure and it worries me. I don't
> > know much about the history of this Jeep at all so I was wondering a
> couple
> > of things. First of all can anyone point me to a source online to buy a
> > high-volume oil pump for my Jeep, and secondly how hard is it to swap out
> > an oil pump on my engine? Thank you in advance for input.
> >
> > --
> >
> > I can hammer it back into shape later...
> > :wq!
>
>
>

Lee Ayrton

On Sun, 2 May 2004, Shaggie wrote:

> > What are you running hot and cold for pressure?

> When I first start it up and it's cold I can hit 60psi but at idle when
> it's hot (210 degrees or so) it's down around 8psi. Even at 50mph or so
> when it's hot it only hits about 16psi or so. Sound pretty bad?

Moses Ludel says that oil pressure below 37psi @ 1600 rpm and below 13psi
@ 600 rpm is outside the limits, based on his experience with the 304.
YMMV.