how big?

[atwater]

bought this AR puller recently. looks like a fair amount of clearance work has been done but the cam appears to not have been notched. assuming a 3" pin and billet rods how long of a crank do you think should fit? i also have a 6-3 PB sitting here in need of new sleeves + pistons.
trying to sell a 51 mi and 43 a to help raise funds.
 

[atwater]

forgot to add photos.
i had not noticed until i took the cover off but they had a patch on top of the case between the crankcase cover and govenor.



 

[JD G 51 puller]

Something doesn't look right. It doesnt come close to hitting the crankcase cover. My guess someone put the stock crank back in. But anyhow stock rods 7 3/4 with cam notch, 9 3/4 with 4020 rods and cam notch. Go big or go home:)
 

[atwater]

yes it is the stock stroke hence why it needs some"help"
i have never stroked one before and was wondering how much stroke could be safely run with a clearanced cam and what has already been done to the case.
can a powerblock be bored and resleeved to 6.5 and still be reliable? or are you stuck with the typical 6.125?
 

[BushogPapa]

Ray at "Extreme" can tell you what can be done with your PB..

Ron..
 

[Mike N Mo]

If you want a reliable crank, go with a 9" or 9.125" with a 3" pin. There are some 9.25"/3" pin out there, but you'll probably break camshafts.

As far as your 6-3 powerblock, I'm not sure a 6.5" sleeve can be fitted in there. The earlier blocks are much better to work with because there's only 6 block-to-crankcase bolts to work around instead of 8. Also, the chances of having sleeves welded in and not leaking water are pretty slim. If you do go that route, I suggest using a cast or ductle iron sleeve material rather than a steel sleeve that typically has been used in blocks that have the welded-in-sleeves. If you want a reliable big bore block for a late A (to replace a 6-3), talk to Jeff at Murphys Motor Service. He has a good solution that works well. If you're on a budget and have to choose between a stroked crank or a big bore block, I'd do a stroked crank first, seems to get you more power/dollar spent. Good luck, Mike
 

[Deere power]

9 1/4 will fit just fine just notch camshaft and notch sleeves so the rods miss
 

[jd b puller]

[atwater]

tractor has already been modified quite abit fenders were bobbed. platform was modified as well. i think with no weight added this ar would be about 5000 lbs as is. of course with some work more could be dropped.

 

[gwhva]

Was this tractor purchased at the NYS JD Expo last year?
 

[atwater]

[John 37A]

Can you postsome more pics of the tractor?
 

[atwater]

[John 37A]

Thanks, looks like a neat tractor. I'm getting more and more into variations from row crop models as pullers.
 

[atwater]