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trtr013

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Discussion starter · #1 ·
So I am building my stocker motor up in a sense and need some input/advice...heres what ive got





stock head but will be ported and polished

Powroll hi comp 39mm piston(13:1)

TB race cam for stock head(idk if I will use it though its just collecting dust so i wonder if itd work)

Yosh TRS pipe

Uni air filter but stock carb







1. Should I use the stock cam or tb cam?

2. Stock carb will still work? What jetting should I use?
 
Discussion starter · #3 ·
that makes no sense tho all your doing is allowing more air flow in and out and when accompanied with a high comp piston and an exhaust and whatnot it should help a lot i would think. I will ask some engine builders and see
 
Discussion starter · #7 ·
sounds good thats what ill do...its not for vegas or any racing just for the hell of it kinda thing i did. goes on my stunt bike no racing but buddy has an 88 and i dont wanna put an 88 on my bike. Mike said to put the cam in but I need to make sure the valves wont hit the piston dome.
 
So I am building my stocker motor up in a sense and need some input/advice...heres what ive got





stock head but will be ported and polished

Powroll hi comp 39mm piston(13:1)

TB race cam for stock head(idk if I will use it though its just collecting dust so i wonder if itd work)

Yosh TRS pipe

Uni air filter but stock carb







1. Should I use the stock cam or tb cam?

2. Stock carb will still work? What jetting should I use?




I used to run the 15:1 powroll, and l didn't feel a difference on my arse dyno, so l sold it and went back to stock and sold the expensive powroll piston.

The TB cam is good and cheap, takegawa better and Crower better again

Yoshi pipe to big for 50cc, mod your stock pipe and invest somewhere else.

Uni filter helps with stock carb, but a 17mm carb makes a big difference

Takegawa 3sp gears makes a massive difference and you'll have change left over from your pipe

Get the pro pack of poweroll washers to let your clutch engage at higher rpm.

Porting your head will also help.

Have a look at your gearing aswell to suit your ride area.
 
So I am building my stocker motor up in a sense and need some input/advice...heres what ive got





stock head but will be ported and polished

Powroll hi comp 39mm piston(13:1)

TB race cam for stock head(idk if I will use it though its just collecting dust so i wonder if itd work)

Yosh TRS pipe

Uni air filter but stock carb







1. Should I use the stock cam or tb cam?

2. Stock carb will still work? What jetting should I use?


I interested in seeing if the TB race cam for stock head would work also. I have one laying around and im going to try it out in my wifes 50. Would this make more power? Ive heard that you would get some better low end but you would lose your top end speed, is this true?
 
the TB cam makes a very noticeable difference on the mid-top end, and you can't really tell the difference on the low-end. I am running stock carb,jet, and pipe. My spark plug reads fine. Just install the cam and piston and turn the engine over by hand to see if anything touches. I'm pretty sure the cam makes more of a difference than the piston.



You should also do the IRK or ORK. I have the cheap china IRK and it made the engine a good bit more responsive, and its still running perfect. I'm almost certain that the Pitster Pro daytona style ORK will work on the stock honda motor as well.
 
Discussion starter · #11 ·
Nah the yosh pipe is the way to go i love that thing. Im going to port the head, intake and carb. I have a kitaco IRK lying around but every engine builder i talked to said dont run it if Im not racing it. Besides dirt still scares the crap outta me lol... Johnny this thing is seriously a fricken money pit. Thankfully i find great deals on parts. I was going to put the IRK and other parts on the 124 build but since the cases cracked idk maybe I will toss the IRK on the stock motor. If not i got a takegawa 88 motor on the shelf that i may put it in. IDK the tb cam may go in either motor IDK yet...
 
did they give you a reason why you wouldn't wanna run the IRK? A track opened right next to my shop a few weeks ago so i think all we're gonna be doing is racing dirt. Neither of my bikes have any stunt parts on them anymore. Although I'm thinking about having a motard set for my modded 50 just to see what kind of stoppies I can do. My 600RR and 450X haven't been ridden in months. My gixxer has been in pieces in my garage for like 3 years....
 
Discussion starter · #13 ·
didnt know u had a 600rr...your poor 450 and i didnt know u still had ur gixxer...i got my fiddy and idk to go to a track its so far away. Im thinkn of having a setup for dirt just to ride on trails and the track if we ever go but always will keep the stunt stuff. I just started ridding fiddy again last week for first time in 2 yrs but no big bikes in like 2.5yrs but mainly havent ridden since my 954 in hawaii i miss that bike...





back to topic though. Now i have to run 108 race fuel it says for the new piston kit. I just didnt wanna run the IRK cause it makes the bike rev much faster and then i lose all bottom end and torque that i want. Thats the reason ive always kept my stock flywheel.



got any stunt parts or stock cylinder, rear wheel for a fiddy?
 
did they give you a reason why you wouldn't wanna run the IRK? A track opened right next to my shop a few weeks ago so i think all we're gonna be doing is racing dirt. Neither of my bikes have any stunt parts on them anymore. Although I'm thinking about having a motard set for my modded 50 just to see what kind of stoppies I can do. My 600RR and 450X haven't been ridden in months. My gixxer has been in pieces in my garage for like 3 years....


IRK kit gives less engine braking, and makes the bike more twitchy which makes stunting a little harder.



I still stunt with my stage 3 88cc honda trail bikes setup with a IRK kit and 4 speed, but it makes it harder for my friends to control, and make some tricks a little harder.

Going to a 108cc now so that'll be a new thrill for stunting lol
 
50cc tuning is all top end they dont have the torque to pull so its needs to be kept in the higher rpm range when racing

every mod you do will be top end power

high lift cam

bigger carb

hi comp piston

head porting/polishing



your street riding and you need torque to pull the front up from a low rpm range

your waisting your money unless you race 50cc class, keep it 50cc but somewhat stock for smooth power for stunt riding



stock exhaust is proven to be best for 50cc
 
Discussion starter · #17 ·
alright ya i know it is more for race and i might actually hit some dirt up soon since stunting here is just becoming harder geez sounds like hawaii all over again johnny(they actually gated the place i use cause drifters were practicing there too)...



anyways though well shoot i wonder which carb to use and what setup...i got a the hi comp to add some torque to the bike plus was same price as a oem piston anyways...im just not a fan of the 88 yet lol...maybe if we get more into trails or tracks here then i might but till then...
 
if you had done your research you should have known that even the 15:1 powroll piston aint worth the money, maybe on a dyno it might show that it does something but the proof is in riding the little thing, bigger valves are the only way to make any kinda power from a 50cc as the stock valves are tiny and limit air flow even with a ported head, and if you can find someone that can put even a 1mm over sized valve in a stock head you crap your pants at the cost, it just isnt worth it trust me ive been there

88s are great it will take you a two rides to get use to the power if your hitting jumps!

you can pick up a 88 cylinder and piston cheap and use your 17mm carb it will be great lots more torque for dirt or street and it will be smooth power
 
Discussion starter · #19 ·
i have the 13:1 piston and i got it for $50 new in package though. And maybe down the line I will get an 88 if i do ever start going on dirt. But as for street I use a parking lot at the bike shop and so I dont wanna draw too much attention with a loud motor. My buddy has takegawa 88 with trs exhaust and its so loud the tire shop guys actually came over to see what was going on. Im prolly gonna just toss a klx110 carb on the bike and go with that and use the keihin 18 kit on the takegawa 88 motor i have...yes I know i have a takegawa 88 motor but it already has a home in a bike im selling. gotta clear up extra junk to get a 195 for my madass
 
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