service time.....

[viperguy]

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...

[Woop]

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

[bazzle]

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

[viperguy]

thanks guys.. helps me out heaps. cheers