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Wisconsin Block Stamping.


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#1 Texas Deere and Horse OFFLINE  

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Posted July 27, 2014 - 04:20 PM

I was looking at one of my blocks (TR10-D) out of the Bush Hog D4-10s and I found some stampings on the block deck. What does it mean if anything at all?

 

IMG_20140725_142601_239.jpg



#2 LilysDad ONLINE  

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Posted July 27, 2014 - 04:42 PM

Why does that one valve look so beat up?



#3 New.Canadian.DB.Owner ONLINE  

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Posted July 27, 2014 - 08:19 PM

I have found the same marking on pistons and gotten various answers.



#4 Bolens 1000 ONLINE  

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Posted July 27, 2014 - 08:21 PM

Its another one of the Defective blocks wisconsin bored 1/2'' over size.

So nothing went to waste, the factory would re-bore the slightly defective blocks to 1/2'' Ovesize fitting them with a special piston and rings.

 

I dont know what the G stands for though.


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#5 Bolens 1000 ONLINE  

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Posted July 27, 2014 - 08:31 PM

Why does that one valve look so beat up?

 

Looks like carbon deposits to me......


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#6 Texas Deere and Horse OFFLINE  

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Posted July 27, 2014 - 08:34 PM

Its another one of the Defective blocks wisconsin bored 1/2'' over size.

So nothing went to waste, the factory would re-bore the slightly defective blocks to 1/2'' Ovesize fitting them with a special piston and rings.

 

I dont know what the G stands for though.

 

 

Thanks Doc., I knew you would have the answer for me !! :thumbs:

 

I knew about the pistons being marked, but nobody ever talked about block markings..



#7 superaben OFFLINE  

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Posted July 27, 2014 - 10:07 PM

Thanks Doc., I knew you would have the answer for me !! :thumbs:

 

I knew about the pistons being marked, but nobody ever talked about block markings..

 

I think they were supposed to have marked both the block and the piston, but it usually doesn't get seen on the block since the carbon builds up over it and most folks don't clean it up right. 

 

I was also told here recently by an old Wisconsin mechanic that the stamp was normally next to the block number casting on the side. 

 

Ben W.


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#8 IamSherwood OFFLINE  

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Posted July 28, 2014 - 06:06 AM

Are replacement pistons hard to find for these 1/2 over engines?



#9 Bruce Dorsi OFFLINE  

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Posted July 28, 2014 - 08:33 AM

Its another one of the Defective blocks wisconsin bored 1/2'' over size.

So nothing went to waste, the factory would re-bore the slightly defective blocks to 1/2'' Ovesize fitting them with a special piston and rings.

 

I dont know what the G stands for though.

 

Not to nit-pick here, but do you really mean 1/2" ???

 

I'll buy .0005", or .005" but not .5" !!!!


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#10 Texas Deere and Horse OFFLINE  

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Posted July 28, 2014 - 08:46 AM

Not to nit-pick here, but do you really mean 1/2" ???

 

I'll buy .0005", or .005" but not .5" !!!!

 

Since pistons come in Standard bore, 0.010" over and so on, I would say that it means it's bored 0.005" over Standard.



#11 Bolens 1000 ONLINE  

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Posted July 28, 2014 - 09:04 AM

Not to nit-pick here, but do you really mean 1/2" ???

 

I'll buy .0005", or .005" but not .5" !!!!

 

Sorry , Another one of my Typos! :wallbanging: 

 

Since pistons come in Standard bore, 0.010" over and so on, I would say that it means it's bored 0.005" over Standard.

 

Yes, that is correct.

 

Are replacement pistons hard to find for these 1/2 over engines?

 

From what I have been able to gather they were only available from the factory and never a "Stock" item

I assume any replacements are long NLA and the only option is use the one that's in there or bore it to 0.010 fitting it with a new piston.

I was able to use 0.010+ rings on my engine that was 1/2 over.


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