REVIEW 4 cycle up and running report "IT RUNS"

Discussion in 'Dealer Reviews' started by thatsdax, May 2, 2007.

  1. thatsdax

    thatsdax Guest

    ok. All finished..Except for Kill switch and another Kick stand. Forgive the shotty nature of the bicycle. It is a good bike though. TREK 800. So..Here is the deal so far with this new 4 Stroke.

    As you can read in another post, Parts were missing. The sprocket that comes with the kit must be a 55T or larger. Since parts were missing, I put on a standard 44T. Later ....Checking the Blue tool bag that came with the kit, I found more than tools...There were all the missing parts I needed..O well...I should have checked the little blue bag..Who would have thought.........But..Anyway..Got her all installed with a 44T. Next...Was to start her and ride her and put some testing miles on this 4 stroke.....

    Before starting...I pulled the plug and checked for spark. Standard operating procedure...SOP. On the first pull looking for spark, A double hand full of oil came flying out of the spark plug hole and went all over my garage wall...After some wiping...I covered the engine with a rag and pulled several more times blowing even more oil out from on top of the piston and a lot out of the exhaust port. WOW !! All that oil in the top of the cylinder may have seized my motor or even bent the connection rod with all that excess pressure. Maybe it would have broken my rope starter and saved the engine...Never less..It did not happen..Only because I wanted to check for spark by removing the plug. Since the engine is shipped with no crankcase oil, that must have just been a ton of assembly oil. A TON !!! so...I filled the tank with premix..Since that is all I have..And took the bike out to the drive way...No Joy..I pulled and pulled and pulled !!!! I hate Pull starts !!!!! Finally..I go some ether and sprayed some into the intake...She fired..only until the ether burned off.. I pulled the plug and dripped some fuel in there... Pulled several times...She fired..and ran till that burned off. So..Back into the garage she went... I pulled the carb and took it apart and cleaned all the jets. Oh..Did I mention..I filled the crankcase with 10W40 Valvoline.

    ok...Back out to the drive way... All is ready except the kill switch..Pull...and pull..and..Did I mention I hate pull starts ? I hate pull starts...On the 3 pull..She lit.. I made some carb adjustments...And Jumped on the bike..And away I rode !!!!! Yea !!!!!!!!!!!!!!!!

    Ok...We are cooking now !!! She runs great !!! About the same power and speed as the two stroke. This surprised me. It feels like more torque for sure..About the same speed...Not sure..But at any rate..She runs great with less vibration and less engine noise..But the auto clutch with reduction gear drive makes a whine !! I mean..A whine !! IT is louder than the the 2 stroke for sure !!! All because of this Transmission. Wow !!! It is a Whining Screamer !!! I thought that since this transmission is enclosed, and having no directions at all. I felt that this was a wet clutch and gear enclosure and that is was screaming for oil !!!! So..I took her home and added 1/2 pint of 10W40 to the enclosure ... And...That was a messy mistake. It all came back out the little vent hole drilled in the filler bolt . It came out ...All of it..All over my bike , leg and everything..So..I guess it is a dry clutch with reduction is the latest.
    I will now go and put on miles and see if she goes or blows !!! That is why I bought this motor.. To test and see if they are better than the traditional 2 strokes. Well..Here are the pictures of one of the first installed and running 4 stroke kits I know of...I will keep you all posted of the progress !!! Thanks again... and remember.... Thats DAX !!!!!

  2. iRide Customs

    iRide Customs Member

    Thanks for the reveiw! Who else has one or is getting planning on buying one?
  3. rcjunkie

    rcjunkie Guest

    I wonder why it comes with a standard 55t sprocket? If the engine is pulling the same as a 2 stroke on a 44 tooth sprocket at 5000 feet altitude, just imagine how great it will do a sea level!

    Couple of comments. A 4 stroke takes longer to break in than a 2 stroke. The reason is that its the pressure of combustion that presses the rings against the cylinder wall to seat them...happens less frequently than 2 stroke. So, if power is equal to a 2 stroke, think how much stronger it would be once everything is seated/broken in.

    I do not know for sure but the carb should have a low and high end mixture screw that is so sorely lacking (or elusive if you think it is the idle speed screw) in our 2 stroke engines. This should help fine mixture for altitude. Grady/Duane please confirm or deny this issue for us.

    Engine should run slightly stronger on straight fuel than premix.

    I thought the gear reduction system was a wet system too.

    Now that you are done playing with your new toy, please put it on Ebay and order some more from China!
  4. thatsdax

    thatsdax Guest

    I am not Done Testing yet...

    Here is the run up ... This engine is louder !!! Louder because of the Tranny. I do not think this kit is Grubee. It is much different than the Kit I see from Grubee. The Engine is not a Honda GX anything. It is an Asian 4 stroke. I sure it is a Japanese Knock off of Yamaha or Honda or KAw or something. Again..The tranny is so loud , It takes a lot of the fun out of riding.. The engine is huge !! As you can see in the pics. IT is large to be sure. So far...Here is my take with only around 25 miles now..

    The 4 Stroke is better than the two stroke in These area/Areas..

    Engine is more quite / Drive system ruins this
    Not having to mix fuel with oil

    The 2 Stroke is better in these area/areas

    Smaller, much smaller size
    Easier to install for sure

    If the 4 stroke can be made to fit as the 2 stroke does now..And.IF the 4 Stroke can be made with a quite drive train and pedal start..Then..It will be a winner. It will have taken over the 2 strokes domain..As of now..The 4 stroke is better in some areas....But is not the winner at all. The 2 stroke also has many superior attributes. The 2 Stroke is also around 100usd less. I can see that the 4 strokes have potential. I will get with engineers to see if we can correct these short comings of the 4 stroke. At the same time.. Improvments to the 2 stroke are being made also.. Better linings...Roller bearings for the Piston wrist pin ect...So.. Let the Battle continue !!!!!
    For right now..The 2 stroke is still the winner...But..the 4 stroke is catching up...
  5. Guest

    Guest Guest

    Plus, I like the "gray market" aspect of the two stroke! :lol:
  6. thatsdax

    thatsdax Guest

    Ok...Another 4 Cycle update. THE VERDICT IS IN !!!!!

    ok..I just finished riding my new 4 cycle..and then jumped on the 2 cycle..The 4 cycle is louder and makes a little more torque...When I then jumped on the 2 stroke, it hit me...What a Jet !!! When it gets on the pipe..It seems to jet around..Where as the 4 stroke is more..Well..Tractor like. The 4 stroke also shakes and vibrates more..Quit a bit more actually. And..The slenderness of the 2 stoke..Wow!! The 2 stroke really does spoil you... Fast..Jet like..Lean and slender...Handling is better..Not only because the 2 stroke is lighter, but the fact that it is so slender and a lower in the frame providing a lower center of gravity. I am not sure those are things that a 4 stroke will be able to overcome... We shall see......For now..The 2 stroke wins.... Hands down !!!! My verdict is in !!!!!!! I still have fun on my new 4 cycle..and will continue to test my new This is too much fun for sure !!!!
  7. azbill

    azbill Active Member

    thanks Duane
    very informative review :)
    man I wanna try one :lol: :lol:
    I hope the grubee version coming out is even better

    even tho the engine is 10" wide, my legs will still be blocked by my 13" w tank 8)
  8. Butch

    Butch Guest

    I purchased a Grubee 4 stroke kit about a couple months ago and am using a Honda GXH50 motor. Mine makes the same loud whining noise as dax has noted with his. The Grubee motor mount has an adjustable motor mount and it looks like daxs mount is not adjustable. I have been running it as a dry clutch but I have heard that it could also be run as a wet clutch with the gear box filled with tranny fluid. Here is the link to that info. http://edited-out, see below/SKYHAWK-STAGE-2.html
    Do any of you think that this process would help any to quiet down the whining coming from the gear box? Other than the noise I have no complaints about the Grubee kit or the Honda GHX50 motor.[​IMG]
  9. gone_fishin

    gone_fishin Guest

    butch, you may have missed the hoopla, but we're not sharing links with that guy 'round these parts, sorry 'bout that.

    nice looking bike, tho 8)
  10. Butch

    Butch Guest

    no offense meant.
  11. gone_fishin

    gone_fishin Guest

    and none taken from you, it's all good :)

    please, guys, do continue...i'm on the edge of my seat. i almost chose to starve next month to buy onna those, but thought better of it...i really like food :lol:
  12. Guest

    Guest Guest

    I think I'll stay with the two stroke until the cows come home....
  13. thatsdax

    thatsdax Guest


    The engine is identical to the GXH50 Honda. It may be a Honda. anyway.....I put on a 36T sprocket. It still pulls nice thanks to the good torque and speed is better for sure. Fast enough for a bicycle. I am guessing 40mph or so top speed. The engine is large still and wide. Vibrates but is not objectionable. My biggest complaint other than physical size is the Transmission Clatter and whine !!! It is embarrassing !!!! It is so loud !!! It is a shame too. Because..I want to hear the sound of the 4 stroke engine . I love the sound of thumpers. I also love the sound and snap of a 2 stroke. But..This is a thumper !! And I want to hear it...But the tranny is so dog gone loud !!! It clatters and whines so loud I can not hear my Engine!! :sad: This is something that has to be fixed. Under load the tranny is really really loud with the Auto Clutch clatter and the gear whine. It is aweful for sure. When you are not under full load..Then..It is no too bad..But still there ...O well.I am working on a fix..I will keep you all posted...
  14. Hey Butch Or Any Other Honda Gxh50 Lovers/haters Can You Tell Us More About The Installation Your Bike Looks Nice.? Please

    I Doing The Same Combo But Making Some Serious Modifications.
    Eg Where And How To Install Kill Switch,

    And Carb Tweeking And Break In

    My Modifications Whatchathink?

    Im Also Running A Wet Clutch But My Gearbox Is Vertical As Im Mounting It On The Rear Better All Around (lighter, Less Parts, Keep All My 28 Gears)

    Also My Engine Came With A Muffeler Atached Can I Use This One?

    Using Disk Break Hub To Attach Sprocket.

    Mounting Gas Tank Above Engine. They Dont Call Me Fireball Jones For Nothing

    And Using Some Racer Handel Bar As Have Gear Ajusters In The Ends Of The Handel Bar Like A Jet Fighter Stick.

    And Also I Gonna Ride It From Kansas City To England (my Home) Well Let The Advice Begin!!! Ps I Can Post Pictures If Needed
  15. Ps And How To Adjust Idle
  16. azbill

    azbill Active Member

    Instead of jumping someone else's thread with your questions, maybe you could start your own thread
    oh yeah, maybe introduce yourself and get aquainted as well
  17. Wey To Put My Foot In My Mouth....sorry Dude For Highjacking The Thread. I Started My Own Thread Now.. I Think. Thanks
  18. rcjunkie

    rcjunkie Guest

    So, does anybody know if the loud and annoying tranny whine issue has been fixed?
  19. gone_fishin

    gone_fishin Guest

    don't mean to distract, but since you've finally revived this...i think someone has to think "inside the box" here...why all the gear-schtuff & complicatedness?

    a simple torque convertor (off the shelf parts, for real) or a centrifugal to jackshaft arrangement (also available parts-wise) is all we need to get this "4-stroke happy-time" party started. both ideas are easily put into production and affordable to the consumer. i ran the real mini-bikes when i was a kid, i LOVE pull-starts, & a tuned 4-stroke starts every time.

    seems to me the total cost of a kit (w/o engine) could ultimately be reduced by about 30% if we
    apply a little of the ingenuity this country used to be respected for :cool:
  20. i agree a 4 stoke happy time would be great!