Custom 70cc engine build

[Z.hb71]

are you spinning that with a drill motor to try to start it ?

Yes

 

[corn juice]

you got to get the start rpm up!!!! That drill motor must be chuck'in like hell to spin that

 

[mark35]

Let's see a vid of the drill turning the motor over, corded drills normally don't have much torque.
A good 18v cordless should spin it good.

 

[corn juice]

That resistor spark plug cap and plug is not helping . not killing ya, but not helping

 

[corn juice]

geeeeeezzzz! sent out for pizza and poured pitcher of beer to watch this monster light off ......... But NO you go to bed.

 

[Z.hb71]

Let's see a vid of the drill turning the motor over, corded drills normally don't have much torque.
A good 18v cordless should spin it good.

Yeah my small cordlrss drill can't turn it over. Corded one can quote well. Do there won't be much going places and running till I get s pull start and compression release

 

[corn juice]

Yeah my small cordlrss drill can't turn it over. Corded one can quote well. Do there won't be much going places and running till I get s pull start and compression release

COMPRESSION RELEASE !!!!....you will never get corn juice to light up with that working against ya!!!!

 

[Seandonato73]

Z try firing it on gas like the new guy said.

 

[Polar_Bus]

Wonder how av gas would fair in my engine, I hear it's a clean fuel and runs good ? That is if I could get some.

Find a local "small aircraft" airport and ask if you can purchase "100LL" . If you insist on running race fuel, 100LL is the easiest to obtain.

 

[D3MON]

Just checked, yep theres a couple in a 10 mile radius.

Typically you can go there and buy fuel, more than likely a pay at the pump type deal. Used to be how I got my fuel.

 

[Z.hb71]

Z try firing it on gas like the new guy said.

Alright ? question. Should I preheat the head to like 100-150deg to help it along? Or should it be a complete cold start? I'd assume heat would help it along. Also should I empy my tank of e85 and fill with 91 or put 91 in the plug hole to get it to start sucking from the carb?

 

[corn juice]

try to start just like I said. It will give ya idea if psi in roll over is good enough to run e85. If its starts and only likes gas to stay running your psi might not be high enough. should not need to heat head on a gas startup

 

[Seandonato73]

Shouldn't need to heat the head to start it in anything. Try gas.

 

[corn juice]

If all fails and no run you better get a degree wheel and see if timing box is talking right with motor as you got alot of different parts mixed and matched on that build
PSC is here on east coast and sells all Sunoco race fuel types. UPS will carry 5 gal cans of fuel. just make a mock order and your zip code will tell ya if shipping is good for you or not. With the r/c mod motors we run the Surge 105 as It has nothing in it but good ol race gas, no added crap that 2 smokers do not need and has a great shelf life when stored right

 

[Z.hb71]

Ok so, I poured a tiny bit of 91 gas into the plug hole, and without changing anything, it started and ran for a couple seconds while I held 1/4 throttle. If I let off it would die, so I have a idle issue, and the flywheel nut rounded off, and the clutch nut fell off ?‍?‍?‍?. So I've got to take that nut off and buy a new one. But it some what runs. And it sounds very much like a alx 71 just with a bit deeper sound. I love the sound. You guys will get to hear it whenever I fix that my nuts.

 

[corn juice]

yea I got deeper sound when my nut's are messed up too. You should pop pipe off kwik and see if piston/rings are playing nice with slug hole.
yea those funny car drill motor starters are tough on crank hardware ! BUT IT FIRED OFF.......COOL!!!!!!

 

[Z.hb71]

yea those funny car drill motor starters are tough on crank hardware ! BUT IT FIRED OFF.......COOL!!!!!!

Yep, the first nut I had the threads poop themselves, second one was a serrated flange nut. It held up till the end were it rounded off. So I've got to find a good nut.

 

[corn juice]

what is it ? m10..m12 ??????

 

[Z.hb71]

what is it ? m10..m12 ??????

M8-1

 

[corn juice]

I would be very careful smacking around a hard m8 crank end!!! , snap off alot easier than you think. They are strong but not in the way you are using it.
zee , seen a guy take another set of the shorter upper rear shock springs and another set of that slider perch and he clipped the coils down to put on top of the short springs already on there [three spring stack ]get proper ride height with a big motor in chassis