pictures of 12v intercooled piston compared to nonintercooled piston

RickFox

RickFox

Active member
I had done some searcing and looking for some pictures of some nonintercooled pistons compared to intercooled pistons. I came up with nothing, so I purchased some on Ebay. Today I was able to get some pictures comparing the two.

In the pictures below the piston on the left is a standard 12v intercooled piston, the piston on the right is a nonintercooled piston.

View from the tops
IMG00188-20111204-1448.jpg


IMG00185-20111204-1447.jpg


View from the side, notice the lower top ring.
IMG00187-20111204-1448.jpg


IMG00186-20111204-1447.jpg


Just as some added information, I stole these from another thread. This is the standard intercooled piston compared to Mahle 155*

View from the top.

P1010781.jpg


P1010784.jpg



Hope this helps someone in the future.

Thanks,
Rick
 
heres some more pictures...

12v engine build up - Page 2 - Competition Diesel.Com - Bringing The BEST Together

piston question? - Competition Diesel.Com - Bringing The BEST Together


I got all the 12 valve dimensions/blueprints, heres some info...

i THINK #286110 is the non intercooled piston, but have heard that #286210 is also, and not sure what the #286050 is, maybe Snedge or Smokem will let us know

#286110 64mm wide bowl, 14.13mm to the top of the ring, 47.1cc bowl
#286210 59.12mm wide bowl, 14.13mm to the top of the ring, 43.2cc bowl
#286050 66.31mm wide bowl, 14.38mm to the top of the ring, 52.3cc bowl
# 286140 64.3mm wide bowl, 10.3mm to the top of the ring, 53cc bowl, coated skirt, dual ring steel insert, TRUE marine piston

for factory intercooled 12 valves i have 7 different ones shown, but all very similar
 
NickTF said:
What year is the 12v intercooled piston in the top picture?
Click to expand...

98 piston

PRINCETON_JAKE said:
heres some more pictures...

12v engine build up - Page 2 - Competition Diesel.Com - Bringing The BEST Together

piston question? - Competition Diesel.Com - Bringing The BEST Together


I got all the 12 valve dimensions/blueprints, heres some info...

i THINK #286110 is the non intercooled piston, but have heard that #286210 is also, and not sure what the #286050 is, maybe Snedge or Smokem will let us know

#286110 64mm wide bowl, 14.13mm to the top of the ring, 47.1cc bowl
#286210 59.12mm wide bowl, 14.13mm to the top of the ring, 43.2cc bowl
#286050 66.31mm wide bowl, 14.38mm to the top of the ring, 52.3cc bowl
# 286140 64.3mm wide bowl, 10.3mm to the top of the ring, 53cc bowl, coated skirt, dual ring steel insert, TRUE marine piston

for factory intercooled 12 valves i have 7 different ones shown, but all very similar
Click to expand...

This is some really helpful information too, Thanks!
 
Last edited:
and to add something to this my marine 330hp motor specs out 22* and the 370hp motor stock is 24*
 
That piston is from a '94-95 as the top ring land is 8mm from the crown. I have prints for every stock piston from Non I/C 1st Gen to the 6.7L, could have just asked.
 
Smokem said:
That piston is from a '94-95 as the top ring land is 8mm from the crown. I have prints for every stock piston from Non I/C 1st Gen to the 6.7L, could have just asked.
Click to expand...

This is why I asked. Thanks for clearing this up Weston.
 
NickTF said:
This is why I asked. Thanks for clearing this up Weston.
Click to expand...

Smokem said:
That piston is from a '94-95 as the top ring land is 8mm from the crown. I have prints for every stock piston from Non I/C 1st Gen to the 6.7L, could have just asked.
Click to expand...


This I also find to be pretty interesting, since the pistons came out of a running 98 truck with a storm block. Someone must of changed them at some point. Good information, and thanks!
 
The non intercooled piston would be a good 6.7 crank piston. Looks like they would still have more deck even with .080 cut off or what ever the exact number is.
 
You can view them here;

[ame="http://s358.photobucket.com/albums/oo25/westonmerril/Piston%20Info/"]Piston Info pictures by westonmerril - Photobucket[/ame]
 
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10 mm from the top of the ring to the crown on my 98 piston.

I'm still trying to decide on whether I should keep my stock piston or go for an aluminum one with a larger bowl. I'm not really after big power, just an efficient/smooth motor.
 
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