Alternative fuels > Straight Vegetable Oil

Direct Injection and Vegetable Oil

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adhall:
fattywagonman:

Thanks for the picture and comments. However, having never seen a standard Petteroid piston crown, I am at a loss to know what modifications you have made. Would you kindly elaberate, please? I would enjoy knowing what you did and what the rational was.

By the way, I decided to play it safe and have purchased an indirect injection engine. I am definitely expecting to run it on WVO.

By the way, if I wanted to try direct injection, could I just change the piston and cylinder head? (My engine is a JKSon 6/1.)

Best regards,
Andy Hall

tim:
Andy you would also have to change wrist pin and bushing as the wrist pin is bigger in the DI engines.

tim

fattywagonman:
It's a lister DI not a patter piston but they're pretty much the same...
Here's a link to a photo

http://biodiesel.infopop.cc/eve/forums/a/tpc/f/159605551/m/9111037541?r=2311032641#2311032641

adhall:
Fattywagonman:

Thanks for the picture. If I interpret your original picture right, the bowl-shaped cavity in the middle was the original combustion chamber. You must have added the seven radiating channels and the seven dimples. Also, it appears that the dimples have small holes in the center that connect with the original combustion chamber.

Have I got that right?

Can you tell me what these modifications accomplish? And how did you adjust the compression ratio after removing that material from the piston crown? (or did you even have to?)

Best regards,
Andy Hall

Doug:
Here's the stock Piston....

http://www.putfile.com/pic.php?img=4206636

Whats the bore on that modified Petter fattywagonman ?

Looks smaller than my 102....

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