What did you do to the timing? (and why) ________________________________ From: [email protected] [[email protected]] On Behalf Of Jones, Allen [[email protected]] Sent: Friday, July 30, 2010 1:35 PM To: [email protected] Subject: RE: [old-chevy-truck] Another fuel ? Re: Fuel grade and additives?
Ah, I get to answer this coming from ethanol central (corn country). The answer is... it depends. If you are using stock stuff to get the gas from the tank to the cylinder, you shouldn't have a problem **unless** your stock stuff is really old. NOS fuel pump diaphragms (and other NOS rubber and synthetic parts) can have problems with a 10% ethanol blend. If you have gone through the trouble to replace everything with an ethanol resistant material (viton, etc.), I've tried an 85% blend nervously in my 261 (thinking I forgot to replace a rubber fuel line, etc.) and it seems to have not hurt anything. I had to adjust the timing to compensate but it actually ran pretty good (decrease in mileage of course, power was debatable, it was not on a dyno). I've even put E85 in my 1950 John Deere Model A and it runs good (replacing all rubber parts of course with viton - it was on the dyno, lost about 10% power). Note that rubber gas lines are going to be an issue at 85%.! The biggest NAPA warrantee claim in Minnesota in 2008 was... fuel pumps. You draw your own conclusions. The ethanol blend should not harm an engine, it's all the soft parts that will take a beating. A lot of blender pumps are going in our area so that you can dial in your ethanol blend from 10% to 85%. Note I am NOT an advocate of ethanol, I just played around with things when it first came out, out of curiosity a few years ago. Allen '50 3100 -----Original Message----- From: [email protected]<mailto:old-chevy-truck%40yahoogroups.com> [mailto:[email protected]<mailto:old-chevy-truck%40yahoogroups.com>] On Behalf Of Ron Sent: Friday, July 30, 2010 12:05 PM To: [email protected]<mailto:old-chevy-truck%40yahoogroups.com> Subject: [old-chevy-truck] Another fuel ? Re: Fuel grade and additives? I finally got my 49 3/4 ton up and running, with brakes even. Is it safe to use 10% ethanol fuel? Never really thought about until I went to put gas in the other day and the store I stopped at has ethanol. It is about 10 cents cheaper than regular grade, which is not a bargain if it is not good for the engine. Back fifteen years ago when I had it running last, I don't think ethanol was an option. Thanks Ron --- In [email protected]<mailto:old-chevy-truck%40yahoogroups.com>, "Nate" <vwna...@...> wrote: > > > It acts as an upper cylinder lubricant and prevents the valves from doing > that momentary welding shut that causes the " Shooting Ducks " sound... > > In crappy SBC engines ,it'll also prevent valve seat recession , not a > problem with the vastly better InLine 6 Bangers =8-) . > > I'm finding all manner of stupid & silly things wrong with my new old '76 GMC > , it should be terrific when I button it up . > > -Nate > Bob Wrote : > > Interesting... What does the ATF do? > > > > > > > > "Nate" <vwnate1@> > > Sent by: > > [email protected]<mailto:old-chevy-truck%40yahoogroups.com> > > 07/29/2010 10:20 AM > > Please respond to > > [email protected]<mailto:old-chevy-truck%40yahoogroups.com> > > > > > > To > > [email protected]<mailto:old-chevy-truck%40yahoogroups.com> > > cc > > > > Subject > > [old-chevy-truck] Re: Fuel grade and additives? > > > > > > > > > > Regular Pump grade , no need for additives unless it's " Shooting Ducks " > > out the exhaust @ idle , then just add 4 oz. of ATF to every fillup . > > > > These engines were designed to run on ubnleaded fuels , yes even way back > > then as GM sold millions to third world hellholes that didn't have leaded > > gasoline . > > > > -Nate > > Rick wrote: > > > > > > On a 55' 235 6cyl. what would you recomend for fuel grade/octane? Are > > lead substitute additives recommended or not? Rick ..in Minnesota > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > ------------------------------------ Ole Chevy and GMC trucks rule! To unsubscribe, send an email (with no subject, no body, just the email), to: [email protected]<mailto:old-chevy-truck-unsubscribe%40yahoogroups.comYahoo>! Groups Links ------------------------------------ Ole Chevy and GMC trucks rule! To unsubscribe, send an email (with no subject, no body, just the email), to: [email protected]! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/old-chevy-truck/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/old-chevy-truck/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
