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Old Aug 12, 2012, 12:52 AM
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Riverside Calif.
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I am trying to find out how old this Tee Dee is?

I have an old Tee Dee .049 that sold for $17 from Kirn - Kraft. The needle valve is
much longer and thinner than my other TD's. Part #170, Does anybody have an
idea when these were sold?

Thanks


Bill M.
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Old Aug 12, 2012, 12:59 AM
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Beaverton, OR
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Bill,

Most of the NIB Cox engines I have, are marked with the date of manufacture on the cardboard insert. Look for a date stamp on both sides.

Bill
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Old Aug 12, 2012, 01:30 AM
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Riverside Calif.
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Unfortunately, I didn't find a time stamp. I have looked for a copyright date on the
instructions, and there wasn't anything there either.

Something else that seems strange, no tools. The box only indicates that
operating and maintenance instructions are included.


Bill M.
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Old Aug 12, 2012, 01:54 AM
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There should be a wrench in the box.
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Old Aug 12, 2012, 03:37 AM
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I have two articles from 61' and 62', and neither use that needle valve. The box
has a picture of a 1960's fuel can, and another fuel can I don't recognize.

Another possibility, is the needle valve is a Kustom Kraft needle?


Bill M.
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Old Aug 12, 2012, 07:41 AM
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Kirn Kraft would have been in the early 1970s. Joe Klause took it over as Kustom Kraftsmanship in the late 1970s. We were into mouse race at the time and ran some of Joe's engines.
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Old Aug 12, 2012, 10:10 AM
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That looks like it has the special extra fine threaded needle valve that KK sold separate. They apparently also sold engines already with the KK needle valve on them.
We used to use the KK custom pressure backplate on the engines too. This pressurized the fuel tank so much that you had to have the KK needle valve to be able to adjust the engine. It was also popular to use the KK needle with the bladder tanks too.
So your engine is likely a early 1970's vintage version then. Like Jim Thomerson stated.
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Old Aug 12, 2012, 01:36 PM
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Does the venturi have a gravel strainer? That will narrow it down to a before/after date, at least.

At least, unless the venturi was changed when the KK needle was installed.
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Old Aug 12, 2012, 01:56 PM
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Quote:
Originally Posted by earlwb View Post
We used to use the KK custom pressure backplate on the engines too. This pressurized the fuel tank so much that you had to have the KK needle valve to be able to adjust the engine.

I didn't notice it before, but it does have the pressure back plate installed.

Quote:
Originally Posted by ahrma_581 View Post
Does the venturi have a gravel strainer? That will narrow it down to a before/after date, at least.
At least, unless the venturi was changed when the KK needle was installed.
Yes the strainer is installed

Thank you guys

The man that gave this to me (Irwin), and many other collectable engines, is
one of two people that showed an interest in my model building as a kid. He
is someone that is important to me. I didn't need the engines at the time, and
told him I would sell his engines for him on Ebay. I recently started selling my
Jet Ski parts, and now I have been spending a lot of time photographing, and
researching his collection.

So, does anybody have an idea what a new Kirn-Kraft modified TD is worth
on Ebay? I really don't want to mess this up.

Thanks Again


Bill M.
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Last edited by Capt. Quirk; Aug 12, 2012 at 02:02 PM.
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Old Aug 12, 2012, 02:13 PM
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Does any body know what mods Kirn Kraft would have done?

I thought Kustom Kraft drilled the venturi, redrilled the 6 small holes in the
venturi, set the air-gap between the bottom of the piston and the bottom
of the exhaust port (free porting is the name go karters called it).

Would they have installed a lower compression head, or colder glow head?
or the crank shaft, or modified the rotary valve timing? Changed the fluting
on the transfer ports?


Bill M.
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Old Aug 13, 2012, 11:00 AM
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1975. The cylinder has a groove machined into it about .125 below the exhaust port. In the 1960's the cylinder was thin walled, In the 1980's they started using thick walled cylinders from above the exhaust to the threaded end.
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Old Aug 15, 2012, 12:56 AM
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Quote:
Originally Posted by Capt. Quirk View Post
I have an old Tee Dee .049 that sold for $17 from Kirn - Kraft. The needle valve is
much longer and thinner than my other TD's. Part #170, Does anybody have an
idea when these were sold?

Thanks


Bill M.
Hi Bill,
Know those boxes well. My parents bought my .049's in those clear cases in the late 60's to early 70's. I had an .051 in '68 and two .049's, one a lefty, one standard in 1970 from the factory store. Those are standard Cox boxes from the era. Dale bought stock from the factory for his modded engines. I bought accessories from KK separately, left handed props, venturi's, NVA's and the like.
Cool find. My clear plastic cases were turned into many profile clear canopies!
Chris...
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Old Aug 17, 2012, 12:09 AM
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Beaverton, OR
Joined Jan 2005
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Chris,

Are these the same 128 tpi fine Cox needle valve assemblies that Hank Nystrom sells on his Texas Timers site?

I have a few of his press in versions, and they are excellent.

Bill
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Old Aug 17, 2012, 10:37 AM
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Yeah they are pretty much the same needle valve units that were being sold way back then. I have a couple of the Texas Timers needle valve units and they look the same as the old ones to me.
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