Fuel for the L26

[hash76]

I did a quick search for what fuel one should use for the L26 engine and the best I could find was this:

 

http://www.viczcar.com/forum/index.php/topic,2443.msg19363/topicseen.html#msg19363

 

which wasn't too helpful and some stuff about using ethanol fuel. I was wondering which octane people here would recommend using, as I use 98 but have been told that it may be too 'rich'. Also what is the importance of using lead additive? Thanks

[260Coupe]

If your L26 runs the stock 8.3:1 comp then it will run on 91 RON unleaded...........the issue is valve seat recession caused by the lack of lead so use a lead replacement additive in the fuel.

Or refress the engine and install stainless valve seats so you can run without the lead replacement additive.

You may find slight performance increases using 95 RON but only a dyno run will prove this

Al.

[fluegel]

If your L26 runs the stock 8.3:1 comp then it will run on 91 RON unleaded...........

 

My L26 definately pings on 91 this would be explained by the fact that 3mm had been removed from the head.

 

Richard

[hash76]

If your L26 runs the stock 8.3:1 comp then it will run on 91 RON unleaded...........

 

My L26 definately pings on 91 this would be explained by the fact that 3mm had been removed from the head.

 

Richard

 

Hey Richard, do you mean 'pings' as in knocks?

[fluegel]

Hey Richard, do you mean 'pings' as in knocks?

 

Yes