Quincy Z Build

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Quincy Z Build

Postby BJuby » Sat Jun 01, 2019 2:14 am

So a little background.  This is the project that Steve Litzell had that he was planning on completing over a period of time.  Well, we acquired it and are having Dick Austin (builder of the Looper Beast from scratch) build it from scratch in his honor.  He has it in his computer all drawn up.  Here are the first pictures as well as what it will look like when it is finished.  The engine pictured is one of only 3 350cc three cylinder "B" class Z engines that Quincy made.  They also made 3 500cc three cylinder "C" engines.  The castings that Steve had were a 4th "C" that was never built.  Also have to give a shout out to Alan and David who have been providing information of internal components to help us decide rod and piston choice.
Attachments
Quincy 3 Cylinder B.jpg
IMG_0002.jpg
IMG_0003.jpg
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby Michael » Sat Jun 01, 2019 3:11 am

very cool project  icon_thumbup.gif
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Re: Quincy Z Build

Postby outboard315 » Sat Jun 01, 2019 2:51 pm

Cool project. I remember Steve talking about using motorcycle pistons for an outboard.
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Re: Quincy Z Build

Postby BJuby » Sat Jun 01, 2019 4:22 pm

outboard315 wrote:Cool project. I remember Steve talking about using motorcycle pistons for an outboard.


These will be Wiseco pistons.
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby Locomotion » Sun Jun 02, 2019 3:27 pm

Awesome looking engine, does it use an existing crank shaft?
What kind of reed valves?
What ignition, I see a distributor what was it originally?
Any photos of the parts developed so far?

Thanks for sharing.
Ray
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Re: Quincy Z Build

Postby BJuby » Mon Jun 03, 2019 1:30 am

Locomotion wrote:Awesome looking engine, does it use an existing crank shaft?
What kind of reed valves?
What ignition, I see a distributor what was it originally?
Any photos of the parts developed so far?

Thanks for sharing.
Ray


It had and will have pyramid reeds in front of the crank case.  One set for each carb, each cylinder.

The ignition is Mercury 3 cylinder, forget which model.  The windows of the metal rotor inside the distributor will have to be narrowed if I remember was Steve told me.

I will get more photos together from what I have.  I will pull some of the photos from Steve's thread that he started which has a lot of information about them as well.  Thanks for your interest.
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby BJuby » Mon Jun 03, 2019 2:35 am

This is the reed system for all the Quincy Z motors.
Attachments
Quincy Z reeds.jpeg
Quincy Z reeds.jpeg (47.85 KiB) Viewed 277 times
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby outboard315 » Mon Jun 03, 2019 2:46 am

Was this one of the motors they referred to as drill press motors, where most of the motor could be made in a drill press.
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Re: Quincy Z Build

Postby BJuby » Mon Jun 03, 2019 3:20 am

outboard315 wrote:Was this one of the motors they referred to as drill press motors, where most of the motor could be made in a drill press.


The early ones were.  This one will be done to the very last specs with modern machining, that Quincy was running.  I had the option to do what Quincy was planning on doing before they sold, side mounted carbs, more porting, but decided to make it as the other 3 that were made.

I have the XM-1 “M” class Quincy Z prototype and the hottest “M” class 125cc Quincy Z which made 55hp!  These were used to help determine the porting and other important machining.
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby Locomotion » Mon Jun 03, 2019 9:09 pm

Wow, 55 HP from 7.5 cubic inches! Was that on Gasoline?
Any idea what HP the 500cc triple made?

Do you know what carbs are on the motor in the photo?
Do you have carbs decided on for your build?

Thanks
Ray
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Re: Quincy Z Build

Postby Yellowjacket » Tue Jun 04, 2019 12:18 am

55hp would require turning the motor 13,000 to 14,000 rpm and the power band is going to be like 300 rpm wide..  Not that it's impossible, but that's more than most people are getting today from that kind of motor.   Most 125's are in the 35-40 hp range...  Just say'n...
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Re: Quincy Z Build

Postby BJuby » Tue Jun 04, 2019 1:48 am

Yellowjacket wrote:55hp would require turning the motor 13,000 to 14,000 rpm and the power band is going to be like 300 rpm wide..  Not that it's impossible, but that's more than most people are getting today from that kind of motor.   Most 125's are in the 35-40 hp range...  Just say'n...


Yup and this did turn that.  And it made that much power.  It was run the driver lapped and beat the field so bad the rest threatened to quit the class.

Paul is searching for the dyno card.
Last edited by BJuby on Tue Jun 04, 2019 1:50 am, edited 1 time in total.
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby BJuby » Tue Jun 04, 2019 1:50 am

Locomotion wrote:Wow, 55 HP from 7.5 cubic inches! Was that on Gasoline?
Any idea what HP the 500cc triple made?

Do you know what carbs are on the motor in the photo?
Do you have carbs decided on for your build?

Thanks
Ray


They ran methanol.  Carbs are Mikuni I believe in the photo.  Dick austin has a set that we plan to use that is NOS set up just for this engine.
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby Locomotion » Tue Jun 04, 2019 6:34 pm

I guess the fuel lines should have given away that it was running methanol.
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Re: Quincy Z Build

Postby bobvdinghyracer » Tue Jun 04, 2019 11:32 pm

the carbs on the engine pictured are tillotson/ snowmobile pumper type carbs look like hr`s  with the rare velocity stacks
7.5 9.8 s ke7 kf7 kg7  kh7  wiz10,wiz10q  wiz12,mk15  mk20s mk25s mk30,50,55,58,10a,15a,28a,200s,35twin,300,350,400,450,500,650/4,
 650/3,kg4q,kg7h kg7q ,wiz12h,wiz12q, mk25pop,30h,450q,25ss, 25xsmodh, 650/3cyl mod h, 35twin mod.16/21 25xd mod-16/21h
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Re: Quincy Z Build

Postby BJuby » Wed Jun 05, 2019 12:17 am

bobvdinghyracer wrote:the carbs on the engine pictured are tillotson/ snowmobile pumper type carbs look like hr`s  with the rare velocity stacks


Yes you’re right.  This stuff is more out of my knowledge base.  Still learning about this era.
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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Re: Quincy Z Build

Postby outboard315 » Wed Jun 05, 2019 1:08 am

I may have a source for vintage snowmobile carbs if you need something.

Is it just methanol or is there nitro in there too?
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Re: Quincy Z Build

Postby BJuby » Sat Jun 08, 2019 1:48 am

outboard315 wrote:I may have a source for vintage snowmobile carbs if you need something.

Is it just methanol or is there nitro in there too?


Methanol.
KE3 KE4 KE7 KF5 KG4 KH7 Mk5 Mk7 Mk10 Mk15 Mk20(3) Mk25 Mk28 Mk55 Mk55E 350

KG4-H KG7-Q(2) KG9-Q 20H, 20H Pop(4) Mk25H 25xs 30H 400H, 55H Mod, 75H, 75AH Mod

Quincy FA-90, FA-208, FB-199, FB-222, FB-232, FC-71, FC-74, FD-53, FD-86, FD-107, XF-6, XF-23
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