BILLET CARB MANIFOLD WITH VACUUM OPTION

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two-stroke-brit · #1 Post by **two-stroke-brit** » Wed Dec 02, 2020 2:53 pm

HI All, is there a billet manifold that has the option to run vacuum lines for the purpose of balancing the carbs.
or could the balance bottle/pipe ports in the rubber manifolds be used.

thanks mark

AZRD350LCGUY · #2 Post by **AZRD350LCGUY** » Wed Dec 02, 2020 4:43 pm

I have an RD350LC and use a block off for the cross over tube on the reed blocks. I drilled and tapped them for vacuum take off. I then use a Twinmax for balancing.
I would provide pictures if I can figure out how to do that. or provide your email address and I will send them to you.
Frank

two-stroke-brit · #3 Post by **two-stroke-brit** » Fri Dec 04, 2020 5:59 pm

email addy sent in PM.

cheers mark

AZRD350LCGUY · #4 Post by **AZRD350LCGUY** » Mon Dec 21, 2020 7:44 pm

I have adapters that replace the cross over pipe. i drilled and taped for vacuum takeoff. Works well.

two-stroke-brit · #5 Post by **two-stroke-brit** » Fri Jan 29, 2021 3:13 pm

yep made some up and it works a treat dont need to remove anything apart from the balance pipe.
thanks for the tip
mark

expat · #6 Post by **expat** » Wed Feb 03, 2021 6:49 pm

Hi Mark! Can you share the drawing to make said adaptors please? I need to knock a pair up too!

JonW · #7 Post by **JonW** » Wed Feb 03, 2021 6:59 pm

Yes me too, please :)

two-stroke-brit · #8 Post by **two-stroke-brit** » Thu Feb 04, 2021 6:09 pm

WILL DO .
BUT THEY ARE SIMPLE PARTS
MARK

JonW · #9 Post by **JonW** » Thu Feb 04, 2021 7:15 pm

Thanks Mark, Simple is good. Even i could probably make them on a lathe :)

Even a pic would help, but dims are always good if you have them. thanks mate.

two-stroke-brit · #10 Post by **two-stroke-brit** » Sat Feb 06, 2021 5:53 pm

i used 16 mm aluminium rod . drilled and tapped a 1/8th npt thread to suit the barbed adapters.

They could be improved by using 19mm rod and leaving a 1mm shoulder to stop them going too deep.
i got the basic format from another member.

with the fish tank valves acting as dampers to stop the needles fluctuating wildly.

drawing/writing with a mouse is "Pish" as my Scots buddy would say.
cheers mark

JonW · #11 Post by **JonW** » Sat Feb 06, 2021 9:36 pm

Very cool, Thanks Mark!

What are fish tank valves?

85RZwade · #12 Post by **85RZwade** » Sun Feb 07, 2021 12:41 am

Those look so familiar...

two-stroke-brit · #13 Post by **two-stroke-brit** » Sun Feb 07, 2021 2:00 pm

JonW wrote: ↑Sat Feb 06, 2021 9:36 pm Very cool, Thanks Mark!

What are fish tank valves?

they are small plastic thumb valves that restrict the flow of air which act as dampers

JonW · #14 Post by **JonW** » Mon Feb 08, 2021 12:08 am

two-stroke-brit wrote: ↑Sun Feb 07, 2021 2:00 pm
JonW wrote: ↑Sat Feb 06, 2021 9:36 pm Very cool, Thanks Mark!

What are fish tank valves?
they are small plastic thumb valves that restrict the flow of air which act as dampers

are they like one way flow valves Mark or just a tap?

two-stroke-brit · #15 Post by **two-stroke-brit** » Mon Feb 08, 2021 2:42 pm

I don't know for sure but assume them to be simple restriction valves.
i will check one out and update if it is a one way deal.
cheers mark

RZ/RD 350 & Misc. 2-Stroke Tech BBS

BILLET CARB MANIFOLD WITH VACUUM OPTION

BILLET CARB MANIFOLD WITH VACUUM OPTION

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Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION

Re: BILLET CARB MANIFOLD WITH VACUUM OPTION