225cc tillotson engine install advise

[FNTPuck]

Like shown, there is no button or lever for the decompression setup. It is literally a tab on the lobe of the cam that sticks out on the base circle to bump the valve open during the compression stroke to make it easier to pull start. As the engine starts and spins up, centrifugal force brings the tab back under the face of the lobe to allow the valve to stay shut during compression. Most aftermarket cams will not have this unless they are a welded regrind and it is not recommended for high RPM use anyway.

Your options are to learn to deal with it (a slow pull before retracting for full engagement during compression stroke helps), use an electric starter like a jr dragster, run a stock cam with decompression which will cost you power and RPM, or convert it to an electric starter system with a toothed flywheel, relay, battery, and starter.

I think its loud because there is a space between the exhaust manifold and the pipe . Didn't come with the right spacing, I am going to make one out of something lol looking for something that will fill the space but not break the bank . Rent is due lmfao!

Careful, that will burn your valves quick.

 

[FNTPuck]

Edit* That is all assuming the motor is still stock and you didn't mess with the timing or anything that would cause it to backfire

 

[Joshua Ates]

So I got a new stretched frame the 225cc motor fits right in and lines up !!! So now I have to buy a gas tank and and put everything together. Will keep you posted

Dude. You just ruined a great frame. And it still doesn’t fit. Why? You coulda sold that bike and bought yourself a steel frame AND a harbor freight welder. Everybody on two forums told you to get a diff frame. If you just like burning money, can you send me $2000?

And you’re about to smoke that motor. Running it with no load? You probably revved it up with no load too just to “see how it sounds”? Wasted.

Dude. You just ruined a great frame. And it still doesn’t fit. Why? You coulda sold that bike and bought yourself a steel frame AND a harbor freight welder. Everybody on two forums told you to get a diff frame. If you just like burning money, can you send me $2000?

And you’re about to smoke that motor. Running it with no load? You probably revved it up with no load too just to “see how it sounds”? Wasted.

The phatmoto frame is no where near $2000 ,the motor is fine , you have to run it through a break in period anyhow!obviously you just wanted to try to troll me . Whell guess what? I dont care! I can throw MY money away if I I want. Figure your own sh!# out before you go ragging on Someone else's sh@# . Thanks for nothing on your reply, I didn't ask for your criticism, so if you have nothing productive to say I suggest you keep your B.S. to yourself.

 

[Joshua Ates]

I’m not a troll, unlike most people I have actually built and put thousands of miles on the stuff I give advice on.

Phatmoto was $700. Motor was at least that amount. So wasting $700 or $1500, or $20? Is ok for you?

You don’t break in a motor on a bench, with no load on it. The only bench you should break in a motor on, is the dyno bench.

Maybe use some common sense before getting hostile. Like, why start two threads on different forums if you’re just gonna get hostile when somebody says something you don’t wanna hear? Smdh

Like I said it my money $$$ I can do what I want with it . A new gas tank built in Frame is only $279 gives me the clearance, but I dont want that, I want to do it myself and learn something. Not have some already built frame , out of the box bike that everyone can buy. I kept all the parts and am just recycle the frame and use it for something else. By making comments like " if you want to throw away money you can give me $ . That's hostility! My answer was not hostile, it was defensive! These aren't the only forums I have talked with people about. It's a FORUM not a specialty mechanics shop. Do you build motorized bikes for a living? No! Then you no expert the same as I am no expert. Thanks tho

 

[Joshua Ates]

I did at a point work on motorized bikes, mopeds, dirt bikes, and racing go karts for a living. Nice try though.

“Only” $279? The customs I build typically start with a vintage bike or motorcycle frame and cost around $70 on Craigslist.

The gas tank frame doesn’t give clearance. People do put small blocks in but it doesn’t mean it’s a good fit. They have to run the shorty valve cover which causes oil problems that they turn a blind eye to, usually because their motors don’t even see a hundred miles a month.

But whatever man. Stupid is as stupid does I guess. Good luck with your build.

Thanks for the good luck ! I literally lost sleep over this frame, have put over 16 hours into it before I altered it. I tried everything I could, it's not loss it was a expensive learning experience that I wont make again! Dont rag on a first time builder! I started with something inexpensive, got a good idea of what I wanted , my ideas was larger than reality so I have to move on and cut my losses. I do have a 80cc fully built motor ready to put into another bike as well. I am looking into reinforcing the Phatmoto frame where I altered it and building a trike out of the parts I already have . Not stupid , just inexperienced. You Cant Fix Stipid lol. Thanks for that negativity tho .

 

[Deleted member 26224]

Ok. Do this:

Don’t run your motor any more until you have your entire bike built and ready to go for its first ride.

Don’t ever free rev it. It sounds like you have an upgraded, big bore version of the 212. Great!! You only get one shot at guaranteeing a strong motor and free revving is a sure way of losing it.

Do: break it in hard. You cannot feel compression by hand because of the compression release, unless your exhaust valve rocker is very loose or the cr mechanism is faulty. Google motoman break in and follow those instructions to the T.

Here’s a stock motor I prepped. He’s got my old pipe on it, was an older 25/24 predator with .030” shave. Starts first pull and hauls.

 

[FNTPuck]

I am glad you are moving to a new frame!

 

[HumanPerson]

Dam it Tony01 Stop Scaring the normal people

 

[Joshua Ates]

All my new parts transfer right over into the new frame! Tires, forks, crankset, motor , torque converter . I do need to buy a good gas tank tho, something that will look nice and follow the contour of the frame. I am also looking to put a solo motorcycle seat on it that I have sitting around. Oh yeah ... I finally have a work bench and a vice to keep me up off the ground. I will post some pics when I actually get to go out to my garage to work on it.

 

[Joshua Ates]

The new frame, forks , tires,handlebars, and front brakes. I need to figure out how to put rear brakes on it.