Don't Knock It!

**Speed on the Water** · 11-24-2017 12:24 PM

Mercury Racing's Rick Mackie fills us in on why engine knock happens and how we can prevent it.

https://speedonthewater.com/in-the-n...don-t-knock-it

**Ratickle** · 11-25-2017 07:56 AM

Surprising how well the 1100 does on 89 Octane.

Great engine....

**fund razor** · 11-25-2017 08:29 AM

I usually put in 91 or 93, knowing that gas can sit a while in a boat, and octane loss doesn't sleep.

**Ratickle** · 11-26-2017 07:11 AM

I wish they had done a bit more explanation as to why the higher compression engines leave unburnt pockets of fuel that ignite too late.

**fund razor** · 11-26-2017 07:27 AM

Originally Posted by Ratickle

I wish they had done a bit more explanation as to why the higher compression engines leave unburnt pockets of fuel that ignite too late.

It was written by a marketing guy. It was pretty informative for an Adver-torial.

**MOBILEMERCMAN** · 11-26-2017 01:30 PM

Originally Posted by Ratickle

I wish they had done a bit more explanation as to why the higher compression engines leave unburnt pockets of fuel that ignite too late.

Me too. I don't follow that logic. Seems contrary to previously explainations

Thread: Don't Knock It!