K&B 29R

[howard shenton]

Anyone know anything about this engine. I got it from an CL flyer that was getting rid of his unused CL stuff. Look like mostly from the mid to late 50's or early 60's
I think this engine was produced at about the same timeframe that proto racing was popular.
Looks like it was built on the same crankcase as the Torp 35 Greenhead, which I have one of.
Does not look like the head was painted. It has stamped number 291 on the front
Stamped on the right engine mount, Looking from the front, is A   o46.
Exhaust stack is on the right side, same as the 35GH
Have not started it but when/if I do so it will be with 25% caster oil or higher fuel.

Howard Shenton
Mauldin SC

[john e. holliday]

If I remember correctly, the K&B .29R was a racing/speed engine.  Not for stunt work.   

[Dick Byron]

If it says 29R on the crankcase it is real. If it only has a 29R on the front of the cylinder head it is a late model and not a real 29R. It will also say 29r on the crank counter weight I have been told.

[Trostle]

I was not aware that there were two versons of the K&B 29R.  I won one at a contest and ended up giveing it to a FF guy.  At the time, my understanding was that it was for the CL racing events, but primarily for FF.  I do remember that a Peter Chinn review of this motor stated that it was the most powerful front intake 29 he had ever tested.


You might find a collector that knows something about these engines.  My understanding is that an unused one is worth a good bit of money.

Keith

[Juan Valentin]

 I have an used one in my engine collection. The head is not painted and has the 29R stamp also the case is marked 29R.Here is a pic the one at extreme right.

[EddyR]

I have one in my All American Sr and it is not a speed motor. It is more mild than the .35 and runs very much like a fox .35 but the change from 2cycle to 4 cycle is very quick but it returns to a 4 cycle with no problem. Howard you have seen mine run many times and you didn't even know that it wasn't a Fox. My motor was a gift from Stan Powell.
Ed

[Larry Fulwider]

I have one in my All American Sr and it is not a speed motor.  . . .
 . . .
Ed

Ed -- You've had so many engines on that (still nifty) AA Sr, I can't keep track.  But I was thinking the one on there now was a left hand exhaust Torp? That would not be the same as what Howard has, as his is right handed?

       Larry Fulwider

[Bill Gruby]

If it says 29R on the crankcase it is real. If it only has a 29R on the front of the cylinder head it is a late model and not a real 29R. It will also say 29r on the crank counter weight I have been told.

 The first K&B .29R was produced in February of 1956. It had the new hevier case with only 29 cast on the case below the exhaust and 29R on the front of the head. It also had an "A" prefix in the serial number. 29R3 was stamped on the crank web. 1957 saw the 29R cast on the case below the exhaust. 29R was also stamped on the front of the head. 29R3 was stamped on the crank web.

 Info from AMEE pages 133 - 134  Engine #'s 41 & 45.

  "Billy G"   

[EddyR]

Larry what Howard describes is the same as the one in my AAsr. I have three K&B29's and all are very different motors. There were 29's made for racing but they were not green heads. My 1949 K&B Silver head is a screamer but not a racing motor. I have a K&B .29 from my FF days and it is a so called high speed motor but it looks nothing like the old green heads. It has a two piece case chromed case.  This Green Head .29s  question has gone on for years. That is the reason I put the .29r in the AAsr to find out how it would run. I tried a GH .35 in the AArs and it was much harder to get it to 4 cycle but the .29 does it easily.
Ed

[EddyR]

Larry I have only had two motors in the AAsr since you moved here. A fox .35 and the K&B .29r. I had a K&B .35 in it back in 2003 and crashed it and rebuilt it with the current body. The early 1950,s K&B .29's-.32's have the beam mounts in a different location  and do not line up with the center of the crank case. I would love to put one of them in the AAsr but the needle valve will not line up with the tank and the tank is built in. I have all the K&B variants from .09 to the .45. My green AArs with the wheel pants that many people remember had a Johnson .35 in it and it was my favorite. Bill Little has that motor now.
Ed

[howard shenton]

Thanks for the info on the 29R.

I have checked the crankshaft and crankcase markings and they conform to the 1957 version
It has an "A" prefix in the serial number.
29R cast on the case below the exhaust.
29R3 was stamped on the crank web.
29R was also stamped on the front of the head. This is the only difference as the front of the head on my engine, which is pretty banged up and has the 29 stamped on it but it has 291 or 29I stamped on it.
1957+ is the time frame the my friend was active in CL

Howard Shenton
Mauldin, SC