Jump to content
Sign in to follow this  

Best engine modifications????

Recommended Posts

What are the best engine mods, while still keeping it at 50cc's????

Share this post


Link to post
Share on other sites

For a 50 barrel Big Gun is my choice. Comes with a spark arrester screen that you can insert in wooded areas. If you want a review of other exhuast you can see my right up on www.50ccraing.com and look under product review. Hope this helped.

Later Atom RoTTeN

Share this post


Link to post
Share on other sites

A few places for you to look for the cam.

Sanoracing.com

Paxracing.com

Crower Engineering 619 644 0775

Share this post


Link to post
Share on other sites

Thanks, I appreciate the help. Want to keep it a 50cc machine but do small trickery. All info helps!!!!

Share this post


Link to post
Share on other sites

find a 70 motor with a four speed manual and put a 50 cylinder and an old 50 head on it(they have bigger valves) get the head ported for $225, don't forget the high compression piston $140, the medium web cam camshaft $110, heavy duty valve springs $65, 18mm carb kit $150, big gun exhuast $240, and light flywheel kit $320 or flywheel lightning. i am also testing aluminum cylinders that dont have liners and are nikasiled i recommend the masher racing they hooked me up

Share this post


Link to post
Share on other sites

a good hop up is a kitaco cam from www.Sik50s.com and another good hop up is the CDI rev booster which is also available at sik50s or to just keep it simple you gotta get an air filter, either a UNI or a Kitaco, they both make a good improvement on the stock one.

Share this post


Link to post
Share on other sites

Try http://www.classichondausa.com, they have 3 cam that you can use in your stock head, HRC, Kitaco and Takegawa. Do not waste your time on the Rev box on a stock 50 motor, it will not help, unless you have done some porting to enable your motor to rev over the 8.000 RPM range. The Takegawa HYPER-COIL only adds timing after 8,000 RPM’s and eliminates the stock rev limiter in the OEM Honda CDI. The Kitaco REV-BOOSTER Start adding or adjusting the timing at 2200 RPM, as well as removing the rev limiter. Kitaco really uses a completely different torque curve and for modified motors really works better, but either coil will do little to a stock motor.

Take care……

Lyle

Classic Honda USA

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this  

  • Similar Content

    • By riverside21
      Has anybody purchased/used one of these Arrowhead IHA6017 cdi boxes??  I tried 2 different ones of these on a 1987 and 1994 XR200R, and the bikes won't even start.  Bikes just pop and backfire, had to put the old cdi's back on.  I noticed when I ordered the boxes they stated "advance ignition curves" in the specs.  The box is also much bigger than the stocker and won't fit in the rubber mount.  I didn't mess with moving around the timing to try and get these to work....I just sent them back.  
    • By riverside21
      Recently picked up a 1987 xr200r in pretty good condition, all stock.  The carb was all gummed up and running real rich, and the previous owner removed the baffle and end cap from the exhaust, but left the air box top chute in place.  I cleaned up the carb and verified all stock jetting, needle position, air screw, etc.  Where we live the quieter the better for off-roading so I ordered a new baffle and end cap, but did ride the bike for a week before the parts arrived.  With the muffler parts out I had a brown plug and plenty of power throughout the entire throttle range.  Got the muffler parts, installed them and now the bike falls flat while climbing hills and gradually rolling on the throttle, I get a burble at low speed sometimes and I have a black sooty plug.  I'm kind of at a loss on this one.  I realize that the parts restricted the exhaust....but it's basically back to stock and I've had these bikes stock before and they ran fine.  Seeing as I have all stock jets and am getting a sooty plug, I'm wondering if electrics are weak?  I also tried adjusting the air screw in/out and moving the needle clip to position 2, either of the two made my problem worse.
      Any ideas?
    • By riverside21
      So the other day I notice that the rear shock spring on our 1994 xr200r had cracked and separated about 2 coils from the top.  No big I thought....just go on Ebay and pick something.  Well, after a few days of looking I can't find ANYTHING used or aftermarket!  The stock Honda spring #52401-KT0-691 is "no longer available".  Can anybody lead me in the right direction to get a replacement spring for this bike??
      Thanks in advance.
    • By hondamaster1
      I have a 1999 xr200r. I used to ride it like a champ than i stored it for a year getting it out once in a while to run. Than i took it out a couple days ago started it and it ran and died instantly. I cleaned out the carb put everything back together and still sane thing. You have to feather the throttle to keep it running. It also made a loud pop and it jerks you when you ride it. I changed the spark plug, cleaned the carb, and put new gas in the tank. Any ideas? Wanted to ride it this weekend...
    • By Wayno50
      Nostalgically bought this bike because it’s same model/year/size of what I had as a kid in the early 90s. I should have looked closer but was blind to its issues. Kid before removed tailpipe and put on a silly silencer which I just threw in the trash. Thankfully he kept track of OEM tail pipe but cut the end off of it.. I can only guess to make it louder. I have pipe back on bike but back pressure not good and sound not as tight as it should be. Does this need packing? Can I get a retrofit tip for the jagged 3” end?

×