2 clone engines.. they run a lil different

[1992suburban]

so you may know I bought 2 clones from HF for 96bux each. I put one on a 2 seater and 1 on a 1 seater. the 2 seater one takes off harder but is slower @ WIDE OPEN SPEED

both motors are BOX stock exact same clutch same chain same sprockets.. I BOUGHT BOTH SETUPS same time same place. only diff is OIL used in each motor. and 87 vs 93 octane


2 seater better take off will pull the 1 seater out of the hole. 1 seater will walk me down in top end. (like .25-.5 MPH) lol..

2 seater 10-30 castrol 93 octane
1 seater 5-30 havoline 87 octane

EXPLAIN... if you can


also driver doesnt matter and neither does weight.. tried that

 

[t0x1k]

Higher octane is harder to burn...so there may be your problem.

 

[1992suburban]

LOL.. its like the governor springs are a lil different

 

[anderkart]

Some of the guys that seriously race in the box-stock clone classes have reported slightly better performance with using regular unleaded as opposed to premium.

They've also reported some stock clones preforming beter than others because theres so many diferent manufacturers that have won the "low bid" to build the various engine componets over the years, so the specs and tolerances of these diferent individual parts tend to vary with some being a bit better performing than others.

I've also heard that some of the box-stock clone racers have been known to buy a whole pallet of motors, install their header, carb and air cleaner and then dyno each one to find the best, and then they sell off the rest. Evidently the stock genuine Honda GX200's are more consistent in their performance, materials and quality control. But they do cost a lot more.

You'll find threads about all this over on bobs 4-cycle forum. (overhead valve/clone section)

 

[1992suburban]

well.. right now ones got better take off one has better top speed. I would GUESS Governor spring.. I am gonna regap my plug and see what that does.


i would not think 87-93 octane makes a difference.. I put 93 in mine cause thats what was in my jug. at the time..

 

[anderkart]

Yeah I thought the whole octane thing sounded pretty wacky too. If your interested, they seemed to have a pretty good explanation of this over there.

 

[Rickracer]

They will run better on 87, period, unless compression and/or timing is modded.

 

[residentg]

there is a throttle stop set screw with a spring on it near the throttle lever. look and you will see it. remove that screw, it will allow your engines to spin at about 4k rpm. they may not be set equally now.

 

[1992suburban]

I wasnt ever hitting the governor.. I adjusted mine till I can hear/see the gov. take control of throttle..

should be better now also changed my throttle attachment for when I get the air filter upgrade

 

[residentg]

The stop screw that I am referring to is not part of the govenor. It is the screw with the spring around it below the red arrow (I borrowed the photo from another post - thx Russ http://www.diygokarts.com/vb/showthread.php?t=2408&highlight=clone+throttle). Remove that screw, no harm done and you will gain ~400rpm. This is the cheapest hop-up there is, and it may even out your two engines. In any event, I would advise adding a second return spring as well, just to be on the safe side.

 

[1992suburban]

I knew what you were talking aboout I backed out that screw FIRST THING. I simply wasnt gettin WOT. I had to adjust my linkage.

 

[residentg]

is it all ok now?

 

[1992suburban]

close enough.. its FUN lol

we need to get a video made.. and I will post it

 

[92burbansmilk!!!]

you still mad you are getting outrun?
we taking the govners out today?