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John Deere A block

D

DOUBS

New User
who is the best one to go to to put a 6in plus bore in a stock john deere a block. i would like to stay away from the aftermarket blocks. but still get to that 6.25-6.50 bore range. thanks
 
I would go with someone besides Jack's Auto. Ever since Jack passed away I've seen some rough work come from them. Just my personal experience others may have had a better experience.
 
josh if you are watching this post are you doing blocks and if so what is the cost? thanks
 
If you persue this, be aware of what sleeve material is used, and get a warranty against leaks. Steel sleeves are hard to get rings to seal, and tend to warp out-of-round after several heat cycles. I had one with steel sleeves, and it's nothing but a boat anchor. Saw one pressure checked last weekend that leaked like a screen door on a submarine. Just so ya know what you're possibly getting into...................
 
Dont waist your time and money if you are going to go threw all that work just buy a block from murphys yes a lot of money but by the time you pull yours apart and try to fix it three time you will have that kind of money tied up .
 
I am not re welding sleeves in but have been taking powerblocks to 6.375 with top quality sleeve material... I run a jacks block 6.75 bore and have never had a problem and doesnt smoke at all. I know people who have water leaks and some who have busted ears off too the best route is a broken sleeve powerblock and go bigger or like mike said and go to murphys. Jeff builds a great product
 
thanks Mike and Josh. looking into bigger bore i am already at a 9.25 so the only other way to go is with the bore. thanks for all the inputs just cant bring myself to dishing out 4400 for a block and then have to change my head i am a unstyled tractor. thanks again.
 
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