Let's Make Noise

**Tim Kurcz** · 07-20-2009

Yep, the versatility of the 1-3/16" with adjustable mid range is better, though you will suffer mid range if your prop is too long. The 63 main is about right for that big carb with no vertical air bleeds. My 1" 2-bbls with no air bleeds uses 57 for mains. Go figure!

**Fast Fred** · 07-21-2009

so lets recap the jet case someone comes lookin for such notes,
1" venturi, 1.350 about throttle plates, 36-38 low speed jets, No jet in the main nozzel, 57-58 1/4-20 mains.

1" venturi, 1.350 about throttle plates, 36-38 low speed jets, Main nozzel jets 38, 41-42 1/4-20 mains.

**Tim Kurcz** · 07-21-2009

Yes Fred, you've got it correct. These numbers are good for FE (& sport engines) with Mod-50 porting and pulse tuned exhaust (to atmosphere), 15-16 BTDC timing, 165-185 psi cranking compression, and 8 or 10 port reed cages. So long as fuel delivery is assured and needles/seats in good condition you won't burn a motor down. Let me know how the bigger carbs work. Good luck!

**Fast Fred** · 07-21-2009

it's locked up at 20deg BTDC, 185-190psi crankin

gets on plain in about 2ft

with the 1"ers, on them chubby low speed jets. i've looked and looked then looked some more for over fuelin, new seats ,needels, floats.
even short changed the float hight to see if she would clean up at idle, no dice.
had my face right in thare with a timin light ( the strobe of the light slows down the action so you can see it, try it

) all fuel comes out the idle holes, it pulses. no other fuel is delivered.

**Fast Fred** · 07-21-2009

so Makein Noise, at 6 grand

**Tim Kurcz** · 07-21-2009

Fred - Have you tried going leaner on the idle jets? Perhaps 30's?

**Fast Fred** · 07-22-2009

guna fire it up with the big carbs, the idle should dry up some on 36's. see how she responds, then go back to the 1"ers and start at 34's, and bump down if needed to 32's, 30's maybe, a bit fat on the low end is ok

what plugs do you run?

**Tim Kurcz** · 07-22-2009

BR9HS or BR8HS or L77JC4

**R Austin** · 08-26-2009

Originally Posted by Mark40H

Was sitting at home last night when there was a knock at the door. When I opened the door, there stood a young man I had not seen for many years. His name is Joe Keith. Joe was a brother-in-law of the late Stan Higgins, who was a local racer here in QUincy back in the 60's and 70's.

Stan raced mostly OPC. He ran Checkmates and Allison Craft boats and loved Mercury motors. Stan always liked to make noise and usually had a set of Quincy pipes on his black Mercurys.

Joe told me this set of pipes had been in a shed at his place down on the river for over thirty years and had been through all the major floods here in Quincy in the last few years. He thought they probably came off one of Stan's old 110 Mercurys and thought I would like to have them.

After looking at them today in the daylight, I am pretty sure they are a very early set of Quincys that were made up for the Mark 75 F Class motor.

Will have to have Gene East verify next week. Anyway, thought some of you might like to see another piece of Quincy history.

I will have to bead blast them and give them a new coat of paint and then find a motor to put them on. Really does make a guy want to make noise, doesn't it?

I think they may come off this motor