Never fear my good man , you have taken a step in the right direction.
I have a gxl turbo diesel 1991 80 series as well..
Arn't they just a wonderful truck to go cruising in. ! I'm with your mrs on that.
Anyways i've done the rock hopping and all sorts in my truck (not to the extent of some crazy folk in outer crew but none the less) LCMP and black duck and so on have all be crash takeled in my truck.
Don't p[anic about the oil pressure. Mines the same . It resides on the bottom third marker to one needle width under it !
If in doubt wack on a master gauge and check it. After that grab yaself a nice auto meter jobby and wack a bling bling cowl gauge on..all thats a damn site checper than a factory dash gauge, or you can get it recalibrated at an instruments shop. !
One work of advise, I found a web site called 80scool. post link in a second... Alot of the WORLD WIDE OWNERS all agreed on one thing..
GET THE SUMP OFF AND CHECK THE BIG END BEARINGS..REGARDLESS OF THE K'S ON THE CLOCK.
They all shagg out the big end bearings!!!!
I read up on this site and pondered the information and decided. Ok i'll do it. Well i thought it would be nothing to look at... BUT !!!!
Number three bigend brg... MY GOD !!!! rooted it was. i'll take a photo for you and put it up here...but #3 was the worst with 2 others showing signs for concern. My truck only have 300,000 on the clock and has has a reasonable service history....
after this i threw in some pennzoil 20-50 grade and it runs sweet and slightly better oil pressure for the sake of the brgs.
Do ya self the favor and check the brgs..
new brgs cost 36 bucks and all you need is some oil and a tube of chemical sealant to do the job if you have the tools !
27 ft lb and then crack it 90 degrees. And watch the rod edges..fuk...they are sharp ! I had claret everywhere.
Anyways ill get this info and post it up here for you...
Its cheaper to check the brgs. than to replace the crank, and a rod/s etc etc..
brb
ok example of what the brgs do..
and here's the docco on the big end brgs...
enjoy and TAKE HEED !
http://www.a1.nl/phomepag/markerink/80bigend.htm
after having a bit of a read..there has been more added to the file.
this caught my eye as it wasn't there the last time i checked but ..i have this sound as well...
Also, warning....amongst the 1HZ/1HD community we are finding increasing
reports of the motor generating a ticking type noise at 2200-2400rpm.
Basically this is an anomalise noise and while annoying, is not destructive.
However, a 1HD that has defective bearings may make this same noise (in this
case piston clipping the head) just prior to self destruction. Isn't life
fun?.
Ian B
highly educational document