Gasoline Options

[Mavrick272]

Which kinda gas should I run in my 914?
should I use lead additives or just run premium in it?
or just run regular (crosses fingers)

This is really irrelevant, seeing as it's going to be a long time before she's on the road....but just thought I'd ask

thanks!

[IronHillRestorations]

The higher the octane the slower the burn. The higher octane, the more additives the fuel has in it, which ends up on the top of your piston and on you cylinder head. The more carbon build up you get means it raises the compression and you get carbon hot spots on the piston or cylinder head which results in pre-ignition, so you run higher octane fuel and the endless cycle continues.

Always run the lowest octane you can without pre-ignition (pinging).

[PeeGreen 914]

The higher the octane the slower the burn. The higher octane, the more additives the fuel has in it, which ends up on the top of your piston and on you cylinder head.

Can you show evidence that supports this? (IMG:style_emoticons/default/confused24.gif) I'm not too sure why a race car would want a slower burning fuel.

And why would the car companies state that running a higher octane helps clean an engine? All the hondas and toyotas I pulled apart you could tell that the ones that ran the required 87 octane had carbon build-up on the pistons. The ones that ran 91 were like new.