Let's Make Noise

[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?

[Master Oil Racing Team]

You got that right Art.:cool: What a beautiful sound that would be.:D

[Mark75H]

Beauty indeed. Probably for an F, I think by the time 110's came around they would have been 2 into 1 with just 3 pipes.

You will need a filler block before you can run it on a motor. A filler block is even harder to make than the pipes and side plate. That is why I've never made any of my own.

If the plate is 18 3/4" it is for an F

I bet that weighs a ton

[AZOutlaw]

Looks like a new "ring tone" to me! :D

[Tim Kurcz]

In case you want to run those pipes, I cast Parker filler blocks that be adapted to your Quincy stacks.

[Mark75H]

In case you want to run those pipes, I cast Parker filler blocks that be adapted to your Quincy stacks.

Tim, are you making 6 cylinder filler blocks or does a customer have to buy 2 4cylinder fillers?

[Tim Kurcz]

Hi Sam, I use two 4-cyl fillers and cut/fit to the divider. There's a 3/8" deeper well than the 44's so you either need a custom divider, or filler adapter. Either will work. Rich Welch has two stacker sixes, one a dry system built this way by Bud Parker, the other is a water cooled system by yours truly.........

[Mark75H]

Or mill off the additional depth from the block ... more than one way to skin that cat ;)

I think it is more like 1/2" ... I think I have 2 one quarter inch plates in one of mine to make it match.

[Tim Kurcz]

Could be 1/2", it's been so long that I can't remember. Milling the side down is OK except the need to drill & tap all holes deeper. Also, I'm not sure about the mid-port studs. Either way, the Parker castings work well, They can be used with oblong ports (Parker, Bayer elbows) or round ports via the adapter plates (Quincy, Stevens). Let me know if you'd like some castings.

[Allen J. Lang]

Tim- I see by Jeff Conant's posting of the Mod nationals that Jimmy Robb ran second in 850H. Was he running a 3 banger or your 444? Did Rich Welch run and if so, what engine did he run?
See you at Mark's in the fall.
Ye Olde Desert Geezer Al :cool:

[Tim Kurcz]

Hi Al,

Both Hay and Robb were triples that came from my shop, though Jason performed some additional mods based on 444 technology. I'm waiting for lap times to see which one was fastest around the race course. Rich didn't make it: He has a new boat (untested) and the engine has yet to be assembled.

The 444.1 now belongs to Mark Suter, 444.2 to Roger Hinsdale, and the 444.3 is 1/2 finished on my workbench (along with three other excellent FE engines in process). I plan to show them all at Mark's Oct 24 AOMCI meet.

My plan is to run a radical new triple at the Dayton record runs (Rich or little Jimmy driving), and the 444.3 at Hillsdale. I will also demo my "quiet" Mod-50on the Friday test day. The other engine will be in test phase through the fall and not see a course until next year.

If you can't make Mark's meet, I'm sure there will be plenty of images on BRF. Thanks for asking.

[Fast Fred]

Hey Tim Kurcz,
think you can help me out with some jettin info for a set of Mod50 carbs i gots?
thanks
FF:cool:

[Tim Kurcz]

You betcha, Fred.

Most of my work is with the 1" venturi 2bbls. There are two primary types; one with screw in air bleeds in the emulsion tubes, and one without. Jetting is different for each. Which do you have?

[Fast Fred]

the ones i got have a jet in the bottom of the main nozzel. does that help.
they are 1"

[Fast Fred]

so the ones i got have a low speed jet(in the side, each side) a high speed jet
( in the bottom of the bowl) and a jet in the bottom of the main nozzel,or emulsion tubes.:cool:
thanks
FF

[Tim Kurcz]

For carbs with adjustable air bleeds, I run #38 air bleeds and #41 main jets. Idle jets will be #36-38. These work well with a Mod-50 internal exhaust (above water restricted), or my external Mod-50 copy (atmospheric). If you're running through the prop it may be a little rich.

As with any Mod-50 or FE engine, be certain you supply 3.5 psi fuel with a pump capable of delivering 15 gph at pressure. An electric pump with regulator and by-pass are preferred. Plug reads are critical as well: If not, you'll likely end up with a box-o-pistons with various forms of thermally induced artwork just like me.........

[Fast Fred]

thanks,she is fallin a sleep with them 38 low speed jets, way to fat. checked and rechecked then checked some more again, the carbs are workin like they wanted them to. fuel psi is 3.5 -4.5 psi at about 40gals an hour:eek:

thanks, gots more than enough of them art-work pistons:eek::eek::cool:

[Fast Fred]

gots a set of 1" and 3/16's Mod 50 carbs, they gots a 36 lowspeed jets in them.:eek::cool:

[Tim Kurcz]

Hey Fred,

If you're running this on your SLT, you'll need leaner idle jets because of the exhaust restriction. As long as you have the big end covered, this should be easy to rectify. Note you can split jet the idles with good results - it all goes the same place (saves having to buy more brass).

I am concerned you have too much fuel pressure and may be blowing past the needles at low speed, an uncontrolled rich condition. If you don't have a regulator, try Mr. Gasket. They sell a nice detent adjustable from 1 to 5 psi.

BTW: For FE (850) we all have atmospheric exhaust, and don't idle for more than a few seconds (if at all) so we're less sensitive to an over-rich condition. We start on prime and are on plane within 5 seconds....... Good luck!

[Fast Fred]

ya, i checked that many many times. any way guna run up these hear 1"and 3/16's carbs, they gots the same size throttle plates, the venturi is bigger, and they got a mid range curcuit, with a siphon in the main nozzel for the mid range curcuit, no jet in the main nozzel, does have big a$$ 63 main jets:eek:

[Tim Kurcz]

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]

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.

:cool:

[Tim Kurcz]

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]

it's locked up at 20deg BTDC, 185-190psi crankin:eek::cool: gets on plain in about 2ft:eek: 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:cool:) all fuel comes out the idle holes, it pulses. no other fuel is delivered.:eek::cool:

[Fast Fred]

so Makein Noise, at 6 grand:cool:

[Tim Kurcz]

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

[Fast Fred]

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:cool:
what plugs do you run?:cool:

[Tim Kurcz]

BR9HS or BR8HS or L77JC4

[R Austin]

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

[Jeff Lytle]

Oh my achin' earholes! :D

A Merc 6 with no ear protection! :eek::eek::eek:


Great Pics!

[R Austin]

I made a pattern and had 6 castings made for the 60/66 inch 6 cylinder block. They are patterned to the block with just 3 transfer covers. With a little mach work would work with the first 60 in block (MK75). Need fitting work at the bottom and have plenty of stock for facing off. I Have 4 remaining. If have need let me know.