Boost and intake modifications

[DirtyE]

Well I had a few to split the cases today. The tiny boost channel is laughable, and mine was full of hondabond. Ill be taking care of this.

[DirtyE]

Stock cases.

[DirtyE]

Good advice, but im running a fabrizi 50mm. I havent decided what to do about the oil pump hole. Since im cheap ill probably fill it with a proper epoxy. Its been a while, but I had to use some kind of filler in my piaggio cases when I backyard flowed them in prep for running a Top Performance Due Plus.

[veedubh20]

That why I like 72cc malossi or polini. (",)

It is better crankcase pressure and clock 80mph.

[DirtyE]

I dont want 80. Dont really care for anything over 60. Any roads ill ride will be 50mph max, and for me its all about the holeshot. 0-45 wheelies. I cant ride a wheelie, but having the front end lift is all the fun ill need. A clutch set to grab at ahigh rpm so I can rev up at a stop light before launching. Those are a few of my favorite things.
im not gonna sit here and say I can calculate my performance to an exact description before I build it, but what I can do is use the knowledge I have. Ive been searching the net looking at boost channels in piaggio and mina cases and the markings I have on my cases and the cutting I have planned should put me near par with those updated cases. Its just a match to the fabrizi cylinder.
the way the stock boost port is now, makes it almost irrelevant. Escpecially with the huge gob of hondabond that was filling it.

[DirtyE]

Anyone ever remove the bridge on the intake tract?

[swimmingfree]

dont do it .... it will worp and you will have a air leek...
swimmingfree

[DirtyE]

Sound advice swimmingfree. It seems like a big obstruction to the transfer port on that side. When the air blows past it it will pushed the mixture to the front and back. Im over-analyzing....G9 yours looks nice. Ill probably leave it at that.

[Wheelman-111]

Greetings:

If you examine the thin strip of metal along the top of the intake port window, you will see why that splitter is there. Swimmingfree is correct about developing a leak if you remove the support of the splitter. That "bridge" is too long to hold itself up without bracing from below. I don't have any personal experience, but 5 years ago reading posts here from people who tried it suggests that you will have to toss out the crankcase if you grind out the splitter.

[DirtyE]

New years day flowing

[DirtyE]

Ill do a little more sanding to smooth it out, then move to flushing the transfers

[DirtyE]

.5 of intake

[DirtyE]

Heres a pic of what I mean by flushing the transfers. Through the inlet you can see the blockage by the cylinder skirt. If there is enough meat there its gotta be trimmed.
/
Do I dare go farther up with the cutting out of the intake, or is that a safe place to leave it? I suppose I could angle the meat on the top a little bit at the least.

[DirtyE]

Im almost done with the cases. I left a lip on the exhaust side cause I don't really need air flowing up that way.

[DirtyE]

Finished intake