Internal engine maintenance, few questions

Lake919

NAXJA Forum User

Location

Mobile, AL

• Jan 14, 2015

• #1

So after checking a few things, I found that my timing Chain has excessive play in it. I have decided I am going to change my timing Chain and the gasket of course. I am also going to replace the rear main seal as its leaking. I figured while the pan is off I might as well upgrade my oil pump as well. I am going to lose the high capacity melling one. Anyone have any advice or hints? Thanks in advance

 

Talyn

NAXJA Forum User

Location

Radford, Communistwealth of Virginia

• Jan 15, 2015

• #2

Use the standard volume pump with a new pickup. See here for a few checks on it and some issues with block mating: http://www.jeepstrokers.com/forum/viewtopic.php?f=34&t=2671

 

Lake919

NAXJA Forum User

Location

Mobile, AL

• Jan 15, 2015

• #3

Thanks for the heads up Talyn. Standard volume it is. Should I even bother changing the oil pump? I was only going to go with the HV because it seemed good for the engine. My Oil pressure stays around 40+psi

 

Talyn

NAXJA Forum User

Location

Radford, Communistwealth of Virginia

• Jan 15, 2015

• #4

How many miles on the engine?

 

D

DRock558

NAXJA Forum User

Location

Springfield, IL

• Jan 15, 2015

• #5

40+ psi seems high to me unless it's when you first start up and the engine is cold.

After mine is warmed up it sits around 10-12psi at idle. 125k miles.

 

D

Digger87xj

NAXJA Forum User

Location

Buffalo Creek/Lakewood CO

• Jan 15, 2015

• #6

DRock558 said:

40+ psi seems high to me unless it's when you first start up and the engine is cold.

After mine is warmed up it sits around 10-12psi at idle. 125k miles.

Click to expand...

Actually, 10-12 is low. the "norm" is "usually" around 20

I put them in quotes because every engine is different but if mine was only running 10-15 hot I'd be looking for a reason.

 

Talyn

NAXJA Forum User

Location

Radford, Communistwealth of Virginia

• Jan 15, 2015

• #7

On a fully warmed up engine (not just the coolant) 40 psi is high & 10-12 could be considered low.

 

Lake919

NAXJA Forum User

Location

Mobile, AL

• Jan 15, 2015

• #8

Mine is at 40 at start up and 23 at warm. Engine is 217k. Runs nice. I am replacing rear main seal, oil pan seal, tps, cps, transmission fluid change, plus fix the rust spots.

 

F

firehawk618

NAXJA Forum User

Location

Marysville, WA

• Jan 16, 2015

• #9

If you guys are judging normal pressures by the factory gauge/sending unit then you're going to get readings all over the place.