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Ew, trailpros!

I have a yt125 just like your 175 but the cdi crapped out. A used cdi cost more than I paid for the entire 3 wheeler. lol would any Yamaha 125 cdi (from late 70’s 80’s) from a local atv junkyard work?

Is that a selfmade ecu?

lol 😂 so high revving

What cylinder are you running with this head ?

Gotta love the extra power

Any jetting change after doing this.or does it make it picky or peeky power curve.

Pungsinya apaan itu

Is this possible with smaller bore engines 50cc ?

Hi! I have also handmade auxiliary ports on my 3mb cylinder. I have done those triple ex. portted cylinders few pieces and it is actually great way to modify the powerband and optimize the cylinder for higher revs. Only problem that I have found appearing when pulling max power to higher revs is crankshaft pressure. I have some videos in my channel but I wasn't happy with just 30hp from dyno so I started to build another engine

What is the name of new port sir?

Will that fit onto a DT 175?

what is the advantage of drilling this holes?

practice thats all. you a funny fucker

I would guess thats not going to make any difference to running whatsoever, and has simply destroyed a usable cylinder. Wonder what the point of putting vids like this one omn YT?

Also, I have the idea of throwing that jug to the trash and putting a dt175 cylinder since its ony $90 new, but that gave me another idea ... installing a big bore 240 blaster top end, do you think it can fit? .. is the base gasket the same for dt/it/yt and blaster? I know blaster jug has 7mm more stroke, but maybe with some machining it can fit, have you seen both jugs? I cant find a blaster jug to compare to

these engines are not well balanced, mine did the same for the tingles. getting the rotating assembly balanced would make a huge difference. Crank worx will do it for about $200. As for the head gasket. The 125 is limited with the 4 head bolts, it may just not seal well enough. one thing you can check is the flatness of the head and the jug. You can use a straight edge to check if it's flat, or just take some very fine sand paper (400+ grit) and a piece of glass. you can lap the head and see if there are any high/low spots. you can repeat the same for the cylinder, but will need to pull the studs out. if your reusing an old head gasket, it'll be worth replacing that while you check the head for straightness. another option is to pick up a 175 cylinder and head off eBay. if you have a standard piston and can find a stock bore, you'd be in luck. everything will swap over.

hello Gabriel, Im Carlos (fishertricar) from 3wheelerworld, you helped me with some tips to mod my yt125 3 years ago, once again I thank you. I havent riden, even finished the engine brake in since it was rebuilt , all these years it has been well storaged and finally Im going to complete it. I didnt know a thing about engines that time but I do now. The guy who rebuilt it, installed a big bore sleeve to take the yt175 piston, put it seems like a poor job because the ports are badly manually shaped. He said he copied the ports form the original sleeve. It has 2 problems you might help me: 1 it throws smoke from the head gasket (maybe ill buy a new one) and retorque the head. 2 engine shakes when its running at the point it tingles hard on my hands when I grab the bar, Any ideas?

is that a brad point wood drill bit?

jahanam blok tu

espanish???

If you want rear suspension on these, look for a pro-tec suspension kit. They are very rare but will give you rear suspension.

that has the exhaust boost ports?

I'm not 100% sure where you can locate them(sides internet), i want to say they are pilot bits. We get them at a local avaition scrap yard(WOOT!!) If you want some tips on building, or numbers crunched, hit me up, we can work something out.

They allow more flow to the bottom end. They also dont quit flowing when the piston covers the port. On the down stroke, they allow the fuel /air to fill the intake and out the transfer port next to the reeds. Youll see them on ALL the dirt bikes out there, snow mobiles, etc. They are good stuff.

Lol - As of now, that trike shall be called "potato"

what do boyesen ports do?

what other engine fits this frame?

good potato

i picked them up @ a job i had years ago . they are long pilot bits for aircraft work

@digschopper Wish i made a video of the pipe i built for this YT :) search "pipe design" on 3wheelerworld

@hokogan They are both 6 studs. Stud was out in the pics/vids. The IT cylinder i have fits the same head as the yt. But the transfers on the IT extend past the case, unless you build the metal up on the case to fit the 1978 IT cylinder, it wont happen.

@EJH2011 I want to say there is more, but the quality is pretty bad. From what i remember, that was your first jump, then you started getting it pretty good. You guys are bad ass! I was the dude on the old Yamaha trimoto

@RubberSalt Does that jug have the 5 bolt head? If so, then it's for the post '80 175s, which were an entirely different engine. I thought I saw five head studs in one of your 3WW pictures...

@hokogan Well, i got my 1978 IT175 cylinder.. I think they are lying, the transfers extend past the case >.< I've got a motor with a bad crank, pulled the crank, gonna weld the case, surface it, then port match it to the jug lol. Then i will fit CR125 reeds into it. - This isn't overkill, is it ? ;)

Ha, it's you, RubberSalt! I'm the dude on 3ww (Six Stroke) who put the YZ cylinder on the YT125. Triple ports really help, eh?

@hokogan The IT, DT, or mx175 are good starting jugs. But after you get them, you can still port them. You can add the triples ports.. Then they really RIP! They also have wider transfers in the sleeve and on the base. The biggest problem.. They have to be certain years and are hard to find + expensive. This mod also works for the Yamaha blaster and I'm sure several other machines. Gonna try a Polaris 350l cylinder soon! Gotta weld water jackets up first. More for testing than anything.

Or...you could use the cylinder off of the '77-'79 IT175. Bolts right up, and it has larger ports. Takes a different piston, though, I think.

I need to get another video of it up and goin lol

There's another green guy on the left :-p

@RubberSalt LOL Wreck's but yea this video depicts a slow stock 175, what you have now is probably twice as powerful and demands a lot more respect!

lol "Another Green Guy" You are too funny RubberSalt!

LOL my quad before the wreak, to bad I never went over 1/4 throttle and had is running super rich in this vid lol, we will have to post a new one now! It was dusty as hell that day, also is there someway you can link your vid to my page? Video response maybe?