WOT correction OFF with Alky?

Bison has enlightened me to a little problem that has led me to shut down wot correction. The latest info suggests Alky Injection can over enrich the rear cylinders causeing correction to pull fuel resulting in the front cylinders going dangerously lean. We have a few members who have learned the hard way.

Dual nozzle set ups are more prone to this. As the IAT drops Alky will puddle and head right for the rear cylinders. Running alky in cold weather is dangerous as well.

Alky is a wonderful thing but nothing ever seems to be perfect. No doubt there are some great advantages to running it but there is a fine line to what can be safely done.

IAT needs to be hot to flash the alky into vapor. When IAT drops below 70f on a dual nozzle set up you can guarantee akly is puddling. It makes sense if you think about it.

Food for thought.

RL

What I've found is that you need to inject less alky and richen the targets more and more as the temp drops.

You might not get knock till the instant you hurt it. When under 600hp you have much less to worry about. Once you have enough cylinder pressure to make more than 600hp under 6000rpm you are asking for a lot of trouble if you lean out cylinders. When you are making a lot of power and experience any knock you just hurt it.

No no. I didn't mean to leave you out Don. Your posts are very educating as well. We all very much appreciate you and your knowledge. Keep it coming my friend.

Lets talk more about port injecting. My bud Surej was thinking about using a nitrous plate. WDYT?

RL

Sounds like one of my old plenum spacers would be the ticket for stopping that. I havent seen one in years since Kirban stopped selling them, tho.

Na.. thats not the problem. Its the air distribution. Im pretty sure I was the first person to ever address this way back in the 80s. It doesnt matter how you atomize it, the air path is the same.

Good question. Personally, I have not experienced it enough to say. I should also add that this can still happen with correction off so it not quick fix, just a precautionary measure at this point. We need to come up with a better way to feed alky equally to all cylinders.

RL

Not really.. that just masks the problem.

J are you talking a regular old plenum spacer? Like a champion plenum spacer?

Most of us are running RJC power plate. Have to think that helps. No?

RL

I would think so. My PP is on.

RL