Planet Minis

fatcaaat · 06-17-2008, 08:48 PM

Just put my 108cc motor in my ST90. It is strategically marked 49cc on the cylinder so I can putz around with it all over without registering it. Its going to make a good city commuter until someone ponies up to buy it.

Never used a Molkt carb before but it is obvious not jetted correctly for my application. Somone want to give me some ideas on how to jet this motor I have here?

Carb is the Molkt 26mm Mikuni VM26 Replica that doesn't use the mikuni mains.

Engine:

Dratv 52mm stroker
51mm high compression piston
mild race cam
ct70 head, ported, with 25/22 valves
China ignition
200ft above sea level

I have no idea what jets are in it right now. It just about starts and sputters for a few seconds and peters out. I can't tell anything at this point. Obviously i'm going to have to get it a little closer to get it started.

Figured it should be pretty comparable to a tb106 kit.

toecutter · 06-17-2008, 08:55 PM

I can't help with jetting but I did notice you are in Arlington. Stop by Coleman Powersports and say hello to RL Brooks for me, he loves old small Hondas and has been in the bike biz for donkeys years! (Don;t tell him I said that)

TheCRKid · 06-17-2008, 08:58 PM

put on a china 22mm mikuni and be done

Branyers · 06-17-2008, 09:05 PM

Quote:

Originally Posted by TheCRKid

put on a china 22mm mikuni and be done

+1

A 22/26 Keihin or Mikuni will be perfect for your 108. A VM26 will be a bear to tune properly throughout the range.

06-17-2008, 08:48 PM	#1 (permalink)
fatcaaat 3rd Gear Member Join Date: Sep 2004 Location: Arlington, VA Posts: 2,976	Someone with Molkt Carb Experience? Need Jet advice Just put my 108cc motor in my ST90. It is strategically marked 49cc on the cylinder so I can putz around with it all over without registering it. Its going to make a good city commuter until someone ponies up to buy it. Never used a Molkt carb before but it is obvious not jetted correctly for my application. Somone want to give me some ideas on how to jet this motor I have here? Carb is the Molkt 26mm Mikuni VM26 Replica that doesn't use the mikuni mains. Engine: Dratv 52mm stroker 51mm high compression piston mild race cam ct70 head, ported, with 25/22 valves China ignition 200ft above sea level I have no idea what jets are in it right now. It just about starts and sputters for a few seconds and peters out. I can't tell anything at this point. Obviously i'm going to have to get it a little closer to get it started. Figured it should be pretty comparable to a tb106 kit.

06-17-2008, 08:55 PM	#2 (permalink)
toecutter PM Newbie Join Date: Jun 2008 Location: Marietta GA Posts: 46	Re: Someone with Molkt Carb Experience? Need Jet advice I can't help with jetting but I did notice you are in Arlington. Stop by Coleman Powersports and say hello to RL Brooks for me, he loves old small Hondas and has been in the bike biz for donkeys years! (Don;t tell him I said that)

06-17-2008, 08:58 PM	#3 (permalink)
TheCRKid Advertiser Join Date: Jan 2005 Posts: 3,781	Re: Someone with Molkt Carb Experience? Need Jet advice put on a china 22mm mikuni and be done __________________ T Bolt USA ALL top Pitbikes ,Engines and Parts for Pitbikes & Minis Website Contact THECRKID@TBOLTUSA.COM or Call 215-630-3554

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