I will soon be catless, but my O2s are also less than a year old, so I don't want to hurt them.

Plus it seems that getting the avgas is a lot harder than I was hoping. I got to try and find my old neighbour, she was a helicopter mechanic for a private company operating on the base, but she was also a fellow shut-in, so I rarely saw her even when we lived in the same building.

 

I'm kinda in the same boat as you. I'm in Alberta. You can get 91 here almost anywhere, only I am too cheap to buy it for a daily driver. I already have 799's installed (same as 243's), headers, and a cam with the same dynamic compression as the stocker, but a ton more overlap. Cylinder pressure should still be pretty high, the tune will have to be conservative. After I get some fuelling issues straightened out, I'll let you know how it turns out.

 

Thanks, I'll probably delay some of my upgrades because of winter now, due to even crappier gas being used. So I can wait LOL

I think I might rebuild my spare set of 317's in the mean time though, as either one headgasket is bad or I've got one cracked head, but it's using coolant and the occasional idle stumble. I'll gasket match and blend the ports, clean the valves and install new springs for now, so that I'll have functioning heads that won't eventually kill my bearings.

I may have a lead on some Avgas, but I haven't heard back in a few days. It's from a local helicopter company so it should be a decent low-altitude mixture too. I've got spare o2's and will be soon catless, so I might be able to run the 243's sooner.

First step is getting myself HPTuners though. I can't work with the turnaround of having mail order tunes, especially up in Labrador. I can track packages travelling very quickly all the way across the continent to the Quebec/Labrador border...then it disappears through the "Labrador Triangle" for a few days and then magically appears at the Post Office. It's nerve wracking even when I've ordered ahead of time.

 

There are all sorts of Aviation Gasoline, some have minute amounts of lead, and some have none at all.

Purple av/gas is no lead
brown has traces of lead
the 3 or 4 types of no lead have no dye
ALL leaded av/gas is dyed, but not all dyed avgas is leaded.

You are moost likely going to get 100LL avgas which is dyed blue and has 1/2 the lead leaded fuels used to have.

I really wouldnt sweat not being able to have high test, just optimize for the fuels you have.

peace
Hog

 

It's part of my personality to over analyze everything, riddled with anxiety and have it eventually work out okay, somehow, in the end LOL I don't often consult the internet directly about it and put all those thoughts into text form...

Although I often have 2-3 paragraph posts when a sentence or two would suffice...

 

I forgot to add one thing to my post. If you are just looking for an octane boost you can run just water injection. Once you are set up and tuned distilled water is the only extra cost you would have.

 

+1, but he will have to add some methanol for the winter months.

 

Methanol isn't that hard to get, so it's been a very viable plan for me. I already have a good nozzle and pump. I have a few random coolant overflow and windshield washer tanks I was saving for makeshift WMI reservoirs too but for a big truck I might just run a tank in the bed.

So it's definitely a good option that I will integrate somehow, even if I don't integrate it fully.

 

Haha, for one of my trucks I just mounted my pump in the bed and my tank is a 5gal jerry can. HATE running out, lol.

 

I've got low profile tool box (one that sits inside the bed and sits level with the bed rails), which I only use 50% of, so I'm thinking I might be able to hide some of my setup inside of it and build a box and mount for the pump.