mods

  1. S

    Doodlebug fork mods

    I am considering robbing some Arco forks I got with bent bars of the lowers and cut my forks, weld the top collars on and twist on the lowers! I dont see why it would'nt work! Pro-mod should engineer something like that as a retrofit kit! Note I said it first as far as I know! Dibs on the...
  2. H

    Mods for Propane

    Hello all! I'm new to this forum. I decided to join after seeing all the awesome ideas you all have. I have a briggs 3.5 HP flat head vertical shaft engine that I converted to run on propane. It runs great as is, but since propane contains less energy than gas, it doesn't make quite as...
  3. 8

    Few mods, LOTS of speed

    SO once I can get this engine of mine running right im going to have a quick bike. I entered my numbers into one of the speed calculators and came up with 43 mph. Ill factor in some drag/resistance/tuning inaccuracies and call it 40 mph. That sounds pretty fast for me. For a little bike with no...
  4. joekd

    My Baja Heat 6.5 mods

    I found this bike in April 2009 at a local Dick's sporting goods on clearance Had been looking for something to use to follow my son to the trails down the road from us and this was a perfect fit, the clearance price of $299 made it a no brainer Here's when it first came home Assembled
  5. S

    Input on my mods

    Ok I bought a flat top piston and checked it in the bore and it was .040 in the hole. Now, what if I was to deck the block .070 and and take .030 off the top of the piston will this help on power in any way becouse of the piston being lighter? I know the comprestion will be bumped up a bit but...
  6. A

    Baja warrior mods

    Hey everyone, i have a baja warrior and thinking about taking the govenor out and beefing up the engine, does anyone have any good hop ups or horor stories they would like to share about the 6.5 hp motors with engine mods???
  7. 8

    What mods should i do?

    I have 6.5 on my DB30 and want more power and speed. Right now it is stock. I have about 200 bucks to spend at the moment. I want to gain some rpms for more top speed so i will be getting a billet rod. I want to keep the bike quiet because of my neightbors so a header isnt something im...
  8. Jay Wrix

    3 Horsepower EXTREME mods

    Now we all know that adding a header, aircleaner and governor removal would help a three horse motor out and add some horsepower and help the little motor out, but what if you want more, alot more? well your very limited on what you can do, and if it is done it would be an extreme amount of...
  9. crazy4flatheads

    5hp briggs i/c need info

    hey im new to all this but i have bin tickering with alittle yard kart ive had costume intakes make for the previous two engines i run a carb off a honda 100 dirtbike and it seems to run good i gps'ed it at 40 up a hill but it was really turning some unbeleaveable rpms i just resently picked up...
  10. P

    6.5HP Clone Engine Mods - Which to do first?

    Hey guys, I have a Baja Minibike with the stock 196cc engine. So far the only mods I have done to it is governor bypass and MaxTorque clutch. The bike will do just over 30mph with me on it being 204lbs.. My question now is what engine mods could I do for a bit more power. I know ARC racing has...
  11. E

    6.5 clone power mods

    hey i have a honda clone and i want to pull some more poneys out of her. if any one can tell me what would be best bang for my buck that would be awesome thanks eric
  12. grip9010

    looking for mods for a gx390

    IM looking for all or any mods for a gx390.
  13. D

    future DB30 mods on stock engine?

    im planning to get my db30 up to 50+ mph with the stock engine. i found a 5/8 tav clutch at a local lawn mower store. didn't buy it yet. i'm also planning on throwing on a extreme chain, rear hydraulic brake, and a k&n air filter. is all of this doable? im pretty sure i found the right size k&n...
  14. mhornfeck72205

    6.5 w/ mods bogging from a stand still

    Ok so my engine is as follows: HF 6.5 Flat top piston Arc rod 6* advance 18lb springs + lashcaps milled .015" big porting jet sized to .038" UNI filter straight pipe gov removed ________________ I previously had a problem where I could not accel past around 30mph when I had been...
  15. 357SuperMag

    1970 Rupp Scrambler H35 mods needed

    I am looking at doing some light mods on a 1970 Tecumseh H35 in a scrambler, As this will be my weekly rider, I am looking for some power and speed mods without disturbing the original look of the bike. The roadster, widow exhaust is about as far as I want to go on the out side. If I can get her...
  16. EagleTalons

    Clone mods

    I just bought a new clone yesterday for $119.99. Now, that I have it home. What mods are the best "bang for your buck" with the governor removed? Also, I need to figure out how to get a tav onto it, as I really love my tav on my flathead, don't want to have to get rid of it! I'll be posting...
  17. L

    homedone mods for briggs 5hp flathead?

    I was wondering after hours of searching and not coming up with anything what are some mods you can do at home to a 5hp flathead without buying parts? I already am running a straight pipe, no gov, no low oil sensor, shaved the "eyebrows". besides raising the C/R what other mods are there to do...
  18. S

    A few mods I need help with....

    Hows it goin guys, im going to paint my db30 black tomorrow. However I would like to get a few things in order before I do. I want to put a 1" header for an exhaust instead of the stock one. Anyone find any 1" pipe online? Secondly, I NEED some ape hangers on my doodlebug, anyone else help me...
  19. minidragbike

    Motor Mods, and Speed Info

    I have always told guys about buying the correct modified parts to make he/she go so fast within the distance they are traveling. I would like to clear up a few things. If you can ride a say stock 6.5hp motor with 12/60 gearing with a 5" rim. Then you can pretty much ride the same bike but...
  20. G

    Motor Mods recommendation

    If you want professional work, like no crap Checkered Flag Fuels Kart Racing Engines - 4-cycle / Briggs kart racing engines WKA Gold Cup
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