Outer Limits 4x4 Board

not sure if it makes any difference?

Short answer
YES

Long answer
YES
If you dont run flash lube, the motor will wear out very quickly.

thanks boner. I have some nulon substitute so will start using it. I guess all the brands are much the same?

yeah he's right . flash lube is good .

actually stuff any addatives..sooner it blows up the better than i can go chev shopping

add some diesel to every tank

gingerbreadman wrote:actually stuff any addatives..sooner it blows up the better than i can go chev shopping

Actuall the 2F is almost a chev motor, its based on the chev straight six from the 1960's.

In answer to the original question, Yes, but only because the cyl head is cast iron.

hillbilliywheelchair wrote:add some diesel to every tank

Interesting theory. Define "some"?

boner59 wrote:Short answer
YES

Long answer
YES
If you dont run flash lube, the motor will wear out very quickly.

when you say the motor will wear out quickly, do you understand that it is only the valve seats of cast iron heads that are
affected?

http://www.aip.com.au/health/lead_guide.htm" onclick="window.open(this.href);return false;

... says "no".

I guess they got hardened valve seat inserts at some stage due to unleaded coming in. Plus, a lot of the older ones will have had the heads off and had this done at some point in their lives.

IMO in my experience I never bothered with it in my old 3F, I put ~60,000km on that car without issue running on LPG/unleaded.

How quickly would valve seat recession occur?

-Scott- wrote:

hillbilliywheelchair wrote:add some diesel to every tank

Interesting theory. Define "some"?

well it was sugested to me by a petroleum engineer
from memory it was somthing do do with its refinement being heavyer than petrol (it saw a long time ago and i really didn't pay attention as i was in my teenage years)
but it stopped alot of issues i had with my worked ke20 croller and my fj 40 at the time

i dont use any aditives on my 84 2f in my 60,it mostly runs gas but also unleaded at times,my donks pushing 500,000 kms,still original motor,and still going strong,though it did get the head revalved earlier in the year

no you don't...

the yanks phased out leaded petrol much earlier than we did, and they have no issue. as do thousands of cruisers in australia that have been running gas for the last 20 years...

by the time the valve seats give you issues, it'll be time to tidy it up anyway..

Note that even if the valve seats are ready for unleaded the octane rating means you may need to retard the timing a bit from whatever the 1970s setting was.

valves close up on exhaust every 20000km, need adjusting a lot or put in stellite seats if your rich

mavzilla wrote:valves close up on exhaust every 20000km, need adjusting a lot or put in stellite seats if your rich

huh? i ran my 2f for over 120 000 k's without valve adjustment issues...

bad_religion_au wrote:

mavzilla wrote:valves close up on exhaust every 20000km, need adjusting a lot or put in stellite seats if your rich

huh? i ran my 2f for over 120 000 k's without valve adjustment issues...

I second the 20000km adjustment and often found some tight exhaust valves but i mostly ran on gas