These pistons were made for the Cunningham Ti rods in this thread:

https://honda-tech.com/zerothread?id=1188287

and to go with this crank:

https://honda-tech.com/zerothread?id=1195734

We ordered these to be 12.5:1 with an 88mm crank. CP doesn't list dome cc on their spec sheet, so we measured the dome for ***** and giggles. Guess what... you get what you order from CP.


-Ron

 

your attention to every aspect of the combination is amazing. I cant wait to see the final product.

m.

 

This particular set weighs 327g. It can be lightened substantially with 3d undercrown CNC milling. As is though, it weighs less than a stock 86mm piston ~335g.

This same piston will net the following static compression ratios for each displacement:

12.28:1
90mm x 86mm = 2188cc

12.54:1
90mm x 88mm = 2239cc

12.898:1
90mm x 90.7mm = 2308cc

13.2:1
90mm x 93mm = 2367cc

13.987:1
90mm x 99mm = 2519cc


-Ron

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dvious hatchie &raquo;</TD></TR><TR><TD CLASS="quote">your attention to every aspect of the combination is amazing. I cant wait to see the final product.

m. </TD></TR></TABLE>

ya, what he said

 

how is this better? i dont think i have ever seen this before.

 

Calculation

btw, whats the formula?
Because i want to cc my pistons before i put them in my motor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by envision2teg &raquo;</TD></TR><TR><TD CLASS="quote">how is this better? i dont think i have ever seen this before.</TD></TR></TABLE>

He's measuring CC's.

The outer ring isn't part of the piston if that's what you were thinking.

 

What's the compression height?

 

just simply beautiful.

 

These particular pistons have a 1.041" CH. The wristpin has been moved up 0.140" from stock to accomodate the long rod and additional stroke for the intended combination.

-Ron

 

http://www.imperialclub.com/Re...n.htm

Good read there.

-Ron

 

dam edo nice work by the way are u from (818)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reid &raquo;</TD></TR><TR><TD CLASS="quote">The outer ring isn't part of the piston if that's what you were thinking. </TD></TR></TABLE>

thats what i was thinking

in my defense i was pretty drunk

 

nope, but pretty close - (310)

 

Good stuff, Ron

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">Good stuff, Ron </TD></TR></TABLE>

Damn Ron

 

Thanks Earl for the speedy service!

-Ron

 

Looks good, Ron. Can`t wait to start working w/ you guys

 

Looking good.
Those pistons, some of those IPS cams that I have heard tell of, a little tuning, and you might have something there

 

Yeah, it's alright... just something we're whipping together.

BTW, the Ti rods for this build are the last forged set made by Cunningham. They no longer carry Ti forgings and have moved onto Ti billet. Back in 1997 they had 1000pcs of forged Ti blanks and have been completely sold out since 2000. This motor will be very sentimental.

-Ron

 

-Ron