Stroking a John Deere A

[green puller]

What is the most stroke that can be put in a unstyled John Deere A and stay with a 3 inch journal? Will 2.75 hold up to a murphy's 6.5 inch bore block, if so what is the most stroke? Any experiances with murphy's motorsport? Any opinions on who has the best cam?

 

[Josh Blackburn]

9 inch is possible with 3 inch journal, 9.5 with 2.75, We run a 9 by 6.75 with 2.75 journals, but the gentlemen who built the crank has never had a welded crank break. His strategy is top notch. I would say go with 3 inch journal if you don't have alot of faith in your crank builder. If you want to talk you can email me or call me 9892775366 P.S DONT get a Berry cam. Very disapointed with there grind on the A's, Others may disagree but that is my personal experience

 

[green puller]

Has anybody heard of jacks blocks? Any contact info.? Are alan schooler cams any good?

 

[green puller]

Who welded your crank?

 

[Mike N Mo]

Green Puller, send me an e-mail. Mike

 

[Josh Blackburn]

Jacks # is 4026542217. If you use his block, don't run too much timing. Its really hard on them and they will break ears off, and you need to reinforce them. Schooler runs a isky grind. We had one and it ran great, but there are other good grinds. Jim Benjamin made the crank.

 

[730-LP]

I have built two tractors with Murphys engines,[one was unstyled] and have the third one closed up and ready to put the frame and the rest back together.9 inch crank with 3 inch journals,billet rods, 6 1/2 inch block,cam,roller rockers.every thing fit perfect and rolled as free as any engine I have put together.pricey but very high quailty. If you have any questions,that I can help you with. e-mail is open.

 

[north puller]

Tripple G and Dengler's both have a good name in 2 cylinder cams.

 

[Clint Skarovsky]

What's a ballpark price for welding a 9" crank? Thanks

 

[Josh Blackburn]

[email protected]