CP-CARRILLO CATALOG

SECTION S-S Design & Engineering PISTON FEATURES cont. 5.33 .210 2.46 .097 4.45 .175

5.46 .215

H I PLUNGE BOSSES Machining process done to the pinboss that removes material, either internally or externally, for added weight savings. SHELF MILL A milling program that removes weight on the shelf of the piston below the oil ring, only needed on forged side relief or “X-Style” pistons when certain design criteria makes it necessary. There are many different options, all depending on pin length, desired skirt width and the amount of weight to be removed. ROTARY SKIRT MILL Skirt milling is a procedure that removes material from the inside of the skirts to remove weight. This option should be carefully analyzed for the application, as excessive milling may lead to 33.02 R1.300 .439 .430 3.99 R.157 13.72 .540 8.13 .320 1.160 VERTICAL GASPORTS Vertical holes from the deck of the piston to the back of the top ring groove which allow combustion pressure to directly enter the top ring groove area for maximum ring seal. When not under load, the ring has normal tension for reduced friction. These are most commonly used for drag race applications. CUSTOM LASER LOGO/SERIALIZATION CP-Carrillo offers custom laser marking such as serialization, bar-coding, text, including any TrueType font, alphanumeric serial numbers, data codes, logos, part numbers, graphics, and data matrix codes. 1.335 3.18

PISTON AND ROD COMBINATION OPTIMIZATION CP-Carrillo coordinates piston-rod designs and specifications to allow these parts to integrate precisely and match the customer’s intended usage. This is an advantage that virtually no other piston or connecting rod manufacture can claim.

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CAP SECTION C-C

2nd land Pin

90°

2nd groove

Top groove

SECTION A-A (2 : 1)

U INTERNAL MILLING FEATURES BOX WINDOW MILLING These windows can be used with fully boxed .125 5.09 .200 32 R1.260 0.088

0.7840 1.977 pistons and allow for oil to reach the small end of the rod during engine operation and also remove unnecessary weight from the piston. Not all boxed pistons need these windows; it depends on application and duration of usage. UNDERHEAD MILLING (LIGHTEN UP WITH MIL) Among the many unique technological advances CP-Carrillo uses to ensure our customer’s performance edge, Maximum Internal Lightening (MIL TM ) has quickly become one of the most effective. Although CP-Carrillo has one of the largest ranges of forgings available in the industry, there are still times when a customer’s requirements may result in a piston that is not an ideal match to the forging used. As a result, 3rd groove 3.8400 2.342 0.120 0.004 0.891

L

0.8660

6.86 .270

15.39 .606

20.17 .794

.492 MIN

some areas may be thicker than the application may require. As we all know, more weight means a slower acceleration curve and more strain on the other internal components. Our MIL process allows us to remove that unnecessary material, freeing up that horsepower and reducing the load on the other components in your engine. ROUGH FINISH The surface finish of our piston tops can be

shortened piston skirt life. WINDOW MILL SKIRT

33.02 R1.300

33.85 1.333

33.34 R1.313 An additional milling procedure that removes material and weight from a small box shaped portion of the piston skirt and only reduces the skirt strength by a small amount. 61.47 2.420

21.59±0.025 10.80 .425

67.69

D D

C C

E E

altered by adding shallow circular grooves, these grooves are intended to improve fuel atomization, therefore combustion, especially in lower compression and / or less efficient engines.

A A

A

A

.450 REF

.006 P.D. A

11.81

.465

32

1.400 ±.010

.003 A

.090 ±.010

.100 ±.010

.962

.937

A

32

.355 ±.005

30°

45°

.430 ±.010

CP-CARRILLO.COM

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