Thread: Mechanical advance of various Lucas distributors

[quote=stirlsilver;766993]I would say that you have done a little bit more than 'half hearted' research there peter.

One thing I ask you though is are those values specific to the RV8? Because the shape of the combustion chamber has a influence on how much total advance it will accept.[ quote ]





No not RV8 specific just what i`d consider fairly safe but proofs in the pudding .

Half hearted because if i was fair dinkum I`d have spent more time on it and i`d know , as it is in reality it`s only theory .

It may appear that i understand more than i do but that appearance is not correct .

Using the vac advance on full vac i understand but also feel that it can also be very useful ported with lpg .

Cheers

Originally Posted by stirlsilver

The thing is my engine is a different beast. It's 12:1 compression, when I did try to run it on petrol (while waiting for the LPG booking date to come round) I was running 98 octane petrol with octane boost in it and it would still detonate under light load. With this high compression my engine is quite a bit more fussy about the timing. Hence why i'm giving it particular attention now.

That's why i was amazed it ran .... Fussy wouldn't be the word ... everything about it would have to be "spot on" as there is no tolerance left and it will not tolerate sloppy parts