amsoil

[Guest]

How did the plug look?

 

[tha nemesis]

ohh for sure mike

 

[alfred e numan]

Here is what my piston looked like after 2 months (And no more than 6 hours at the most total run time) running Klotz synthetic oil. I also have a bent crankshaft as a result I believe. If you'll notice the the top of the piston where there is no build up, I 'm thinking there was zero or even (-)squish causing the force of the piston hitting to bend the crank. Either way, the piston & cylinder were a mess and the motor never ran right. I dropped in a new motor with a 990 carb and I'm up & running. (Without the Klotz...)

Is this the same photograph taken weeks ago that the base gasket was gone? just wondering.

 

[Mike4130]

Is this the same photograph taken weeks ago that the base gasket was gone? just wondering.

Yes. It is.

 

[Mike4130]

How did the plug look?

A little burnt, the carb was running lean. I've since replaced it with a 990. I'm sure it was a combination of problems that caused my motor issues.

 

[alfred e numan]

Yea, thats a very rich looking build up - so black. The areas with no carbon are as clean as a part thats never been ran, no tell tale signs of getting hot in those areas either- nothing baked on.- weird.

 

[alfred e numan]

Yea, thats a very rich looking build up - so black. The areas with no carbon are as clean as a part thats never been ran, no tell tale signs of getting hot in those areas either- nothing baked on.- weird.

Oh yea, I have seen in the past heavy carbon make hot spots on pistons, cause then to seize up. Another thing that could have happened- if it got lean with all that build up - when it starts coming off - it just hammers parts- good chance this is what happened.- There is quite a large squish clearence on the stock hy engines, soo its doubhtful there was actually any bindind at top dead center as it was running.

 

[alfred e numan]

On squish clearance, With one top end it means nothing. The CY-29cc. This has about 3 times the gap that most engines have. If you have a Hy-30.5 Stock redcat mill with a wasted top end- freshen up the bottom end- nachi bearings- zenoah seals. find a CY-29 top end on sale- DDM- Large scale rc at times has these- 30-35 bucks. run the ada manafold-990- good pipe- its a fun engine- not much hi rpm- but really big off idle -midrange power- its the way they cut the jug to fit engines with 30mm rods- and the way its ported by the factory.- really controllable power.

 

[alfred e numan]

Here is the top end- go to daves discount motors- DDM, enter this- CA-486.-- $49.00. Its a way to have a good basher motor on a beer budget!!

 

[Guest]

A little burnt, the carb was running lean. I've since replaced it with a 990. I'm sure it was a combination of problems that caused my motor issues.

A burnt plug will be white or grey from ash. If it was black and full of carbon like the piston, that is caused by running too rich.

 

[tha nemesis]

anyone got a good tuning video .. i been looking and cant find a good one

 

[Guest]

This one is pretty good. http://www.redcatrampageforum.com/showthread.php?t=12278

 

[tha nemesis]

awesome ty dad

 

[Mike4130]

Here is the top end- go to daves discount motors- DDM, enter this- CA-486.-- $49.00. Its a way to have a good basher motor on a beer budget!!

Thanks for your input!

 

[alfred e numan]

I have one of these displacement mills on the bench, a few gallons ran tru it. My secret -not everyone agrees, is to buy the graphite coated stainless steel base gasket from DDM, buy 3 or 4 and use the one with the best coating on it. start the engine enough to come up to temp, cool, retorque, do this 2 or 3 times. I use the standard paper gasket on the center cases. This sealed my top-end. others have not had the same results-

 

[alfred e numan]

I have one of these displacement mills on the bench, a few gallons ran tru it. My secret -not everyone agrees, is to buy the graphite coated stainless steel base gasket from DDM, buy 3 or 4 and use the one with the best coating on it. start the engine enough to come up to temp, cool, retorque, do this 2 or 3 times. I use the standard paper gasket on the center cases. This sealed my top-end. others have not had the same results-

I am still 1/2 asleep-lol. Use these bolts on the jug on the engine, no washers, no locktite.-- HPI part # 15438. Wide Cap Head Torx Screw. M5 x 20 MM. You will need a T-27 Wrench tighten. # 15438 contains 4 bolts.