Brodhead Pietenpol Association

Original Posted By: TOM MICHELLE BRANT
Rather off topic, but since there is such a deep base of knowledge here.I just got a 71 Honda CB350 motorcycle which I'm going to lightly restore.It runs well, but I don't want it to gum up over the winter since it hascarbs. I wondered if Av gas is closer to the gas it was designed for andwon't gum up if it sits. Was thinking of running it a little beforeshutting it down and then using auto gas in the spring again.Anybody know anything about this???Douwe________________________________________________________________________________

Original Posted By: douweblumberg(at)earthlink.net
I've restored a few old bikes but never considered avgas.. If possible=2C shut off the fuel supply and run the carbs dry. Otherwise (and again if possible) there should be a screw drain valve on the bottom of the carb float bowls. Get yourself a tuna can to catch the gas and drain it out. I always used to run some seafoam thru before storing for the winter and then keep the tank full and the carbs dry. Never had a problem.Tom B.

Original Posted By: Greg Bacon
Subject: Re: Pietenpol-List: av gas in an old bike..

Original Posted By: "Douwe Blumberg"
When Hurricane Ike hit our area in 2008, auto gas disappeared in about 4 hours.So, with KDWH only a few miles from our home, and generators out of fuel, Imade a run to the field, and filled some 5 gallon cans with 100LL. (After hearingall the generators stop running around the same time due to fuel exhaustion,the sound of our lone generator brought out all the neighbors.) Over thenext thirteen days, my neighbors and I purchased over 60 gallons to keep the generatorsrunning. (To do this we needed a tail number, as the guys at the fieldwould only sell it " for aircraft use." )But I digress; all small engines run great using 100LL, as it has SIX times theamount of TEL found in 1960 and '70's Premium, or high test, fuels. If you remember,the addition of TEL is to prevent detonation, and does the same job ona 15 Hp generator as your O-200.The info from the other posts is very good, as the best way to prevent a carb problemarising from disuse over the winter months is to run the tank empty ofany fuel having alcohol, and, if you MUST replace the fuel, use 100LL, and a stabilizer.For me, both the chainsaw and the generator sit empty after having emptied theirtanks, and running them until the engine quits. In fact, I restart them untilthey won't start again, just to get the fuel out of them. In the past, I'vehad to clean carbs too many times, and getting all the fuel out is a whole loteasier in the long run.--------Tom KreinerRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________

Original Posted By: Matt Dralle
I run 100LL exclusively in my '66/67 Triumph Bonneville. It keeps perfectly and I think it more closely matches the original spec for the fuel.Oscar ZunigaMedford=2C OR ________________________________________________________________________________Date: Mon, 26 Nov 2012 09:57:23 -0800

Original Posted By: Dave and Connie
Rather off topic=2C but since there is such a deep base ofknowledge here=85I just got a 71 Honda CB350 motorcycle which I=92m goingto lightly restore. It runs well=2C but I don=92t want it to gum up over thewinter since it has carbs. I wondered if Av gas is closer to the gas it wasdesigned for and won=92t gum up if it sits. Was thinking of running it alittle before shutting it down and then using auto gas in the spring again.Anybody know anything about this???Douwe ________________________________________________________________________________Date: Sun, 25 Nov 2012 23:16:52 -0500