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Vintage Honda Owners,
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Fuel Type

Fuel System: Gas (Petrol) tanks, Carburators
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What type of fuel do you put in your bike?

Unleaded Plus
Super Unleaded
AvGas 100LL
Total votes: 166

Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am

Re: Premium

Post by LOUD MOUSE » Wed Aug 18, 2010 7:45 pm

Where ya located?. ..........lm

jjjjjj wrote:I have been having a problem with my late model dream running rich. I was looking for some jets at Western Hills Honda and told the vintage parts guy that I was using non-ethanol premium. He suggested that might be my problem as the bike's compression does not require it and it may also be burning incompletely. Hey I don't know! That's just what he said. Will try regular soon and see if it makes a difference.

jjjjjj Member
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Joined: Wed May 05, 2010 12:06 am


Post by jjjjjj » Wed Aug 18, 2010 7:58 pm

Its me Ed, Jeff in Bend. Elevation 4000. Check your e mail....

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brewsky Member
Posts: 1816
Joined: Wed Jul 23, 2008 5:21 am
Location: Princeton, WV

Post by brewsky » Wed Aug 18, 2010 8:51 pm

"Elevation 4000" could be part of your rich problem!
66 dream, 78 cb750k, 02fz1, 09 wing

wargoth Member
Posts: 27
Joined: Thu Nov 04, 2010 9:49 pm
Location: Spokane WA

Post by wargoth » Fri Nov 05, 2010 10:59 am

Lead raises the octane rating of fuel. Octane rating is a measure of detonation retardation, as modified by aditives.
Lead also acted as a cushion between the valve poppet seat and the head as a side effect. Apparently aluminum heads, in particular, have steel seats for the poppet to seal against. If the seats are properly hardened (ie. with Stellite) the lead is not needed for valve cushioning.
'61 CB77, '72 TC125, '72 CB350F, '73 CB350G, '76 CB400T, '79 XR80, '79 XS750 (850), '83 CB650S, '84 KDX250,'91 YZ 250

Gun Member
Posts: 632
Joined: Mon Oct 29, 2007 7:46 pm
Location: Salt Lake City, Utah

Re: Fuel

Post by Gun » Fri Nov 05, 2010 11:26 am

jjjjjj wrote:Its me Ed, Jeff in Bend. Elevation 4000. Check your e mail....
bend oregon?
It's just about that high in the air.
'65 CB77
'66 CB450k0
'93 HD FXR

Jacoby Turley Member
Posts: 12
Joined: Wed Nov 14, 2012 10:13 pm
Location: Elk City, OK USA

Post by Jacoby Turley » Wed Nov 14, 2012 10:19 pm

I use Super for my daily drivers. My family has a lot of '80s model vehicles that aren't of much value, we run regular fuel in them. I'm curious about AvGas though.

CB77GUY Member
Posts: 19
Joined: Wed Nov 15, 2006 3:29 pm
Location: Wichita Kansas

Post by CB77GUY » Thu Dec 20, 2012 12:11 pm

For what it's worth, I'm running VP C-12 leaded race gas in my CB77 vintage racer. I cut it 50/50 with Premium Unleaded and it runs fine with no sign of detonation and the valves have had no problems. It gives really good plug reading too.

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