240260280z Posted March 7, 2015 Share #1 Posted March 7, 2015 (edited) I need to build a motor for Memphis and don't want to do the stoker yet. I have a few blocks that could be over bored. I recall some mention in the past about chevy pistons that work with over bores? Anyone know of possible solutions? Cast hypereutectic pistons are fine for this one. Edited March 7, 2015 by Blue Link to comment Share on other sites More sharing options...
madkaw Posted March 7, 2015 Share #2 Posted March 7, 2015 I've heard Tony D mention something about VW pistons. What about 240sx pistons?You have a torque plate for that kind of overbore? Link to comment Share on other sites More sharing options...
Zed Head Posted March 7, 2015 Share #3 Posted March 7, 2015 I've seen mention of Honda XL500. http://www.wiseco.com/ http://www.japbikespares.com/honda-xl500-oversize-piston-kit-rings-pin-clips-89-5mm Link to comment Share on other sites More sharing options...
Diseazd Posted March 7, 2015 Share #4 Posted March 7, 2015 Nothing wrong with ITM pistons......I shaved .015 off and used Nissan rings. I don't like their oil spacers. Link to comment Share on other sites More sharing options...
madkaw Posted March 7, 2015 Share #5 Posted March 7, 2015 Is that 100$ per hole? Link to comment Share on other sites More sharing options...
Diseazd Posted March 7, 2015 Share #6 Posted March 7, 2015 $15.00 each.... Link to comment Share on other sites More sharing options...
240260280z Posted March 7, 2015 Author Share #7 Posted March 7, 2015 (edited) It would be ~3.5" (89mm)bore and 1.5" (38.1mm) compression height that is needed. Edited March 7, 2015 by Blue Link to comment Share on other sites More sharing options...
240260280z Posted March 7, 2015 Author Share #8 Posted March 7, 2015 (edited) Thanks again all! I think I found something: Piston pin is ~ 1.2mm bigger in diameter so rods will need boring or existing pin sleeved. The piston bore is 89mm. The compression height/pin height is 38.99mm Piston to Head clearance is ~0.32mm so it needs another .07mm off the pistons. It should have a good squish if I can find a 1mm X 89mm gasket. Edited March 7, 2015 by Blue Link to comment Share on other sites More sharing options...
madkaw Posted March 7, 2015 Share #9 Posted March 7, 2015 Guy,I was referring to the 500 pistons Link to comment Share on other sites More sharing options...
siteunseen Posted March 7, 2015 Share #10 Posted March 7, 2015 Ring size is close to what I need. Maybe I can find some moly rings for a Chevy. Link to comment Share on other sites More sharing options...
Diseazd Posted March 7, 2015 Share #11 Posted March 7, 2015 Don't know about those Steve..........I guess he wants a block to convert to a stroker later. Swap in 240Z 9mm rods, stroker crank and 240SX pistons and you're in business after Memphis. Biggest I've ever gone on the L28 is .040 over ( 1mm ). I've never built a Stroker.......I guess it should be on my "Bucket List". Link to comment Share on other sites More sharing options...
240260280z Posted March 7, 2015 Author Share #12 Posted March 7, 2015 (edited) Guy, I was referring to the 500 pistons I checked the XL500 pistons but they have a challenging compression height that would need odd length rods. Edited March 7, 2015 by Blue Link to comment Share on other sites More sharing options...
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