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Briggs PB Research Time - Everybody Help Please


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Old 02-26-2010, 02:12:50 AM
Mark97303 Mark97303 is offline
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Smile Briggs PB Research Time - Everybody Help Please

Ok I remember when we all did this kind of thing with the Fh briggs. i think we almost agreed that there were over 150 different variations,,,,,,,,,,,easy. Today I would like to begin to gather some information on the PB's that we have. And How they were put together. I know if we had an extra 100 pb air shrouds it would not replace all the ones that are missing. But lets try this; highest seriel # stamped on a block,lowest on a shroud (that we think is original) some kind of range of serial number of what is out there with the zenith carb on it, same with motor wheel carbs.Any body want to win a prize for highest ser# with a steel stamped oil pan? I will work on the prizes. So the challange is out there guys you got alot of engines lets see if a trend developes. Got any other nagging questions about PB but never thought to ask ???????? Now is the time. I look foward to seeing how it goes. My highest ser# is 27899 cast oil pan zenith carb. My low is 9788 tin oil pan,stamped block has zenith ( I think should be motor wheel carb) Thanks for giving it you time
Mark
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Old 02-26-2010, 09:12:57 PM
Mark97303 Mark97303 is offline
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Default Re: Briggs PB RESEARCH TIME Everybody Help Please

The page will not let me edit says that choice is not available to me? OK so here is my correction................ My pb ser# 27899 has a cast oil pan and a tillotson carb.... My low ser# is 9788 stamped steel oil panstamped block and a tillotson carb( I think it should be motor wheel carb) Thanks Hope you will join in and see what is out there. Mark
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Old 02-26-2010, 11:07:50 PM
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Default Re: Briggs PB RESEARCH TIME Everybody Help Please

Hey Mark, The options have been sorted out between paid subscribers and members/ guests. The little subscribe link button above is quick and painless if you so choose.

I cant help with the PB info.. Both of the PB's I've had had no numbers and were missing tags
But the good news is someone will be along in no time to start this rolling for you

Randy
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Old 02-27-2010, 04:35:22 PM
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Photo Re: Briggs PB Research Time - Everybody Help Please

Mark, Here is what I have. 7901 on Moto-Mower, tin base with brass Motor wheel carb, 10517 stamped on block, tin base, zenith carb, 13939 tillotson carb off of Moto-Mower and 17140off of Milbradt mower with Tillotson.Lowest # I have not pictured is 6349 motor wheel carb engine. 20296, 24210, 25177 all have Tillotson carb with stamped steel base. Hope this helps.
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Old 02-27-2010, 04:49:27 PM
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Thumbs up Re: Briggs PB Research Time - Everybody Help Please

Highest Serial? I guess I lose, I got a PB with serial: 25728. -- May 1929?



http://sites.google.com/site/briggspbengine/
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Old 02-27-2010, 09:34:43 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

I have a PB but do not know much about them. were is the serial number at. also what carb is in this photo, and what am I missing, is there a cover on this side? thanks , Bob
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Last edited by Bob Ronning; 02-27-2010 at 09:52:50 PM. Reason: add photos
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Old 02-27-2010, 11:29:57 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

Mine is also a 29. It is ser. 26531 with a Tillotson carb. It was on a piece of equipment from Brackett & Shaw Co.
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Old 02-28-2010, 01:58:58 AM
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Default Re: Briggs PB Research Time - Everybody Help Please

Well Bob thanks for checking in on this. What I see is a PB that has a carburator for a Y Briggs adapted. It has the cam cover missing. Goes over those two gears you see there little one is end of crank shaft. I do not see a shroud for other side. Ser# could be on a raised boss on the other side of engine(oppisit side from carb). low by oil fill. If no # there it was on air shroud. That muffler indicates something about its former application but I do not know what. Lets see what someone else can tell you. Thanks Mark
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Old 02-28-2010, 03:37:37 AM
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Default Re: Briggs PB Research Time - Everybody Help Please

Bob are you sure that`s a PB and not a P model? That engine assembly with tank and muffler is used on Bolens walk behind tractors.I had a Bolens model A with a Briggs P on it .The way your carb is bolted to the intake is the way the brass P and early PB carbs were attached, and I believe that muffler was used only by bolens.I can`t tell for sure but it doesn`t look like there is a shroud on the flywheel side if not ,does your flywheel have cooling fins?if not you have a P model.Can you post a picture of the flywheel side? Chuck
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Old 02-28-2010, 11:20:04 AM
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Default Re: Briggs PB Research Time - Everybody Help Please

Bob,
That looks like a real early PB to me. The serial number on my engine was stamped into the block too. It has a stamped tin oil pan and motor wheel style carb. That muffler is a Bolens muffler for sure. I know one way you can tell for sure if this engine ever originally had a shroud (making it a model P if it didn't) The muffler on my PB is flattened off on one side so it can clear the shroud, I can't see in the picture if yours is. Also on the Model A Bolens tractor the gas tank was mounted to the frame of the tractor and not to the engine since, the fan on the model P was mounted there.

Dennis,
Nice work like all of your engines they look great. I have a similar engine with that tag, it was on a 1927 Bolens "Power-Hoe" tractor.

~ Jonathan
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Old 02-28-2010, 01:08:47 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

It is a PB. the number is PB 817. the muffler does have a flat side, this engine must of had a shroud at one time. My flywheel look like someone made it, no fins. Is this the lowest PB number?
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Old 02-28-2010, 02:26:10 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

Bob your missing a digit from the serial #. 817 would be a early P. With that backing plate it would have had a shroud.
-Greg
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Old 02-28-2010, 02:32:54 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

Bob,

It looks like the 4th number is an "8" if so it would have been made around Febuary of 1924. Also this mag plate has the tin around it so it had a shroud for sure, engines without a shroud had just a mag plate w/o tin. I have never seen a flywheel like that either, it doesn't appear to be Briggs made. This engine would have had a brass carb and tin oil pan, held on by many small screws. This pan is the same kind as used on my 1926 PB so they used them for quite a couple years, I am not sure when they switched over to cast iron, but I know the blocks are different since the cast iron pan was attached with 1/4" bolts and not smaller machine screws. This engine will make a nice restoration project !

~ Jonathan
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Old 02-28-2010, 02:50:07 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

I thought that that might be an 8 also that is why I posted the photo of the number. I do have the tin oil pan, held on by many small screws, but It is not on the engine at this time. thanks for the info. Anyone have the grear cover, the right flywheel, and a shroud? Bob
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Old 02-28-2010, 03:15:16 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

Bob, Send me your address via PM and I'll give you a gear cover.
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Old 02-28-2010, 04:01:06 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

Great job guys. I go to church and you solve the problems of the world before I get home. Again it shows that collective knowledge is bigger than any one source. UPDATE: 20 ser #s in and the highest ser# with a motor wheel carb is 7901. And the highest ser# with a tin base is 14,231.Highest # stamped on block so far is 9788. But info on where ser# is is not as complete yet.Come on I know those engines with zeniths on them are out there. Need more Imput!! More Imput!
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Old 03-02-2010, 07:50:23 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

Mark,

I have never seen or heard of a Briggs PB with a Zenith carb. The only reference I have seen to a Zenith carb being used on an early Briggs, is in a early printing of a Q manual I have, The Tillotson carb didn't come out untill 1928 or so I think.

~ Jonathan
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Old 03-02-2010, 10:14:17 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

Jonathan,
Hope the pictures come up for you. This is (hopefully)
my PB with Zenith carburetor. It is in the 13000 range and the carb has a patent date of 12-29-1908
Everett Hayden
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Old 03-03-2010, 01:21:52 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

My PBs ..

PB # 11264 .... Feb 1925
S/N stamped on block pad. Brass tag .
Tillison MS 44B carb
from MotoMower
in collection



PB # 12334....Jan 1926
S/N stamped on brass tag .... No # on block pad..
Zenith carb CV14T
from MotoMower
parted out

Gary
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Old 03-03-2010, 06:37:34 PM
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Default Re: Briggs PB Research Time - Everybody Help Please

I have a PB with "PB6523" stamped in the block. I have no brass ID tag, nor do I see where one would have been. It has a Tillotson carb and a stamped tin oil sump. The flywheel has marks that leave me puzzled - A circle with a "B" and another circle with "43" cast in the front face. The S/N says it is from Jan 1924. Has the flywheel been replaced?
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