Help needed with intake/manifold

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MiniHonda

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Hi everybody!
I need a intake for my slightly tuned z50ak2, (70cc cylinder+e22 cylinderhead). The intake must be in size for a Keihin pc18 carburator, aprox 18-21mm.

There is very little space between the cylinder and tank so it must be a very neat manifold or a long one, mounted at an angle to the side (have an angle-mountingplate). Thinking of having the carb straight out at left side. That way cable routing will not be complicated by the gastank.

Carburator mount is 48 mm c to c.
Cylinderhead 45 mm c to c.

Any suggestions?

Thanks
MH
 

Dreadful

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Hey mate welcome to mr ... I'd try classic Honda 50's he's one of the site sponsors. The guy that runs the show is Jamie, he's a nice bloke and will sort ya out quick as a flash.
 

motodevo

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I have seen a 20mm (tb 88cc rh kit) fit under the tank on a k2, but its tight, you have to put a tb side exit fuel pet****. It's a bit of stuffing around but it can be done if you want it to look stockish. I agree with dready, your best bet is to hit up jamie at classichonda50'saustralia, the manifold in the tb 88 kits should suit your purpose(around 20mm). I had to mod a no name chinga manifold to fit a 26mm mikuni rip off carb under the tank of my J1 because i didnt want it hanging out the side. Ended up elongating the mount holes so i could spin it inwards so the throttle cable would end up in the gap between the tank and frame. Also shaved a mm or so off the bottom face with a beltsander and relocated the fuel pet**** forward on the tank about 5cm. Bit of work but i wanted it to look stock.

stevesmobile025.jpg


stevescamera083-1.jpg
 

MiniHonda

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Thanks for your replys! I have mailed Classic Honda 50´s. Hope he has a solution that not needs major modifications.

Motodevo, nice mods :)

/MH
 

The_GDFP

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He will;) The TB manifold/pet**** combo is a proven one.


Alternately, Takegawa has a long & low manifold that does the trick. There's a cheaper version as well, but requires a spigot-mount carb.
intakestraight.jpg




Same for motodevo, there are a few that are much lower than the Chinese version you have. You have to trim the nub off the float bowl, but save on tank surgery.
 

motodevo

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Yeh taki manifold would be nice but would end up doubling my budget which is pretty much spare change(when I actually have some) Everything that isn't stock Honda is 100% chingagawa
 

The_GDFP

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Yeh taki manifold would be nice but would end up doubling my budget which is pretty much spare change(when I actually have some) Everything that isn't stock Honda is 100% chingagawa

I can relate. My own stuff is ragged, rebuilt, hand-me-downs that I salvage from the scrap heap. Worse, I get to fondle all the cool goodies, then box 'em up and send them away. The kids I build engines for, get the good stuff.
 

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