On Sat, 26 Aug 2006 19:01:24 -0500, (Jay Masino)
wrote:
Did you get the autogas STC before you went to 160hp?

Actually, I got it perhaps a month or so before I had the overhaul and
STC to 160 hp, but I bought the STC for the 160 hp engine even though
I used it while at 150 hp also... Technically, I was required to use
the 91 or better octane by what the STC said, but realistically, I
could have used 87 octane up until I had the overhaul...

No modifications whatsoever to my fuel system... I guess the Grummans
are a bit friendlier in that regard as compared to the Pipers...

The STC made quite a bit of difference while I was still with the 150
hp engine since it constantly fouled plugs on 100LL... With the 160 hp
engine, it doesn't seem to foul plugs on 100LL... It still gets a diet
of 100LL periodically whenever I'm flying someplace away from my home
airport, but the STC was definitely worth the price... I have a 55g
drum in my hangar that I have rigged up with a pressurization system
to act as a fuel caddy... When it gets empty, I toss the drum into the
back of my pickup, take it home with me, and fill it back up on the
way back to the airport the next time... I also fill the drum up prior
to any huricanes so that I have plenty of gas on hand in case of power
outages... If we don't lose power, it'll probably go into my autos
over the next couple of weeks... Or maybe I'll mix it with 93 octane
or 100LL to get 91 octane and put it in my plane... I probably need to
pick up a couple more barrels though... The last one I picked up was
while I was up in Cedar Rapids, IA on a contract for Rockwell
Collins... There was a place between my apartment and my hangar that
sold them for $10 each... The first time I filled it up, I more than
paid for the cost of the barrel...