Outer Limits 4x4 Board

hey guys.. sorry if i ask old questions. but i just wanna be safe..


what is the best oil for my back lsd diff in 91 mav? and should i use the same oil in the front? i heard about a penrite 140 but when i asked about was asked if it was a straight 140 or a 85/140...so whats the go?

how often do u change spark plugs on a tb42 on straight lpg? and what plugs would be recommended? colder or hotter than standard etc...

as my vehicle is straight lpg through a throttle body, is penrite lpg oil 20w60 the best stuff to use?

and finally, i have to adjust my tappets and am looking for info on the gap sizes for the tb42 and any differences from stock for my straight gas set up..

seeing as u guys are the guru's i thought id check and see what everyone else is going.

any other ideas or help is appreciated.. maybe brands of filters or tricks and techniques...

Cant help you with the other stuff, but rear diff should have 85 140 LS or if you cant get that, i believe there is an additive that can be added to give it LS properties..

Nick

My guesses are

85/140 rear 80/90 front

Plug gap .8mm BP6ES
change when they dont work any more, may be 2 10 to 20k.

Dwell angle 34 to 40 degrees at idle. (set up gap .45 to .55mm)

Tappets .38mm (.015t) Warm to hot
no 1 TDC
adj 1,2,3,6,7,10no 6 TDC
adj 4,5,8,9,11,12

Paper airlcleaner,
Z9 or 115 oil filter, Penrite 20 - 50 gas oil as stated every 5 to 10,000k
depending on use.


Bazzle

thanks guys.. helps me out heaps. cheers