Cub mix

[jharader]

Hey fellars what are you running in your gas on your cub setups? I run castor 927 in my small bore bikes and it works fine, love the smell.. But i just purchased a new shee and was wondering if i needed to stepup in the oil for higher hp protection. The guy i bought it from was running half 93 half 110 octane, klotz oil, at 32:1 and it runs GREAT! but i have never ran this nor heard of it? I plan on running straight 110, no cutting it with 93. Id like to keep it simple by using all the same oil as the other bikes but i really dont know much about these topends and if theres any real need to use something else? Used to run bel-ray mc1 tell it took a 3 dollar price increase!! :mad: What ya think?

[Bansh-eman]

your compression will determine what octane to run, but there is nothing special about the cub that it needs a differant oil. I run Yamalube 2R 36:1

[dajogejr]

Use the same oil at the same ratio you do your other bikes on gas.

 

What is the compression and timing on the cub?

[jharader]

Pulled the head off it before i could check it bro, was leaking through a stud, o-rings will be in tommorow, ill have the compression posted by the weekend, the timing was at plus 7 when i got it, i backed it off to plus 4, 7 seemed a little outrageous for me and wanted to start lower and work up if needed, thing ran flipin awesome like that tho, But i got a trip to little sahara planned in a few weeks and wanna get this thing gnat's ass on if possible, dont need it blowing the top off a piston before its first dune trip... ill get all the info on it this weekend, measure the carbs, check the compression yada yada, guy didnt even know what size carbs were on it, bankers :shrug: guy said he took it to race in lousiana, asked em if he was on bhq, nope, but was on planet sand, maybe somebody knows the bike?? ill get photobucket setup as well so i can get some bigger pictures

[_Hex*]

it depends on the compression ratio you are running in regards to octane needed, but as to mix ratio i personally love 32:1 and wouldnt go any other route, yes castor IMO is the best to use; reason because most people use that so if you ever happen to run out and luckly someone has race gas presto.

[Bansh-eman]

your leaksing head around the stud isnt that big of a deal, you can put some RTV on the stud and nut and it will seal it off. but i guess you already ordered the new orings so never mind

[J-Madd]

Pulled the head off it before i could check it bro, was leaking through a stud, o-rings will be in tommorow, ill have the compression posted by the weekend, the timing was at plus 7 when i got it, i backed it off to plus 4, 7 seemed a little outrageous for me and wanted to start lower and work up if needed, thing ran flipin awesome like that tho, But i got a trip to little sahara planned in a few weeks and wanna get this thing gnat's ass on if possible, dont need it blowing the top off a piston before its first dune trip... ill get all the info on it this weekend, measure the carbs, check the compression yada yada, guy didnt even know what size carbs were on it, bankers :shrug: guy said he took it to race in lousiana, asked em if he was on bhq, nope, but was on planet sand, maybe somebody knows the bike?? ill get photobucket setup as well so i can get some bigger pictures

 

 

I don't remember seeing it, but there were a lot of bikes there.

 

I'd just leave everything the way he had it since it runs good. Just put in some new plugs and do a plug chop to make sure the jetting is close. +7 on the timing is no big deal..especially if you plan on running race gas.