Wiseco Forged Race Pistons - Ford/Cosworth

RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
Santaquin, Utah 84655
1-801-754-5338 or Toll free 1-866-700-5877

Contact us anytime 24-7

 

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Call toll free to purchase at: 1-866-700-5877

Shelf-Stock Forged Pistons. Sold complete with pistons, rings, wrist pins and circlips. (piston kits)

  • ArmorGlide® SKIRT COATING INCREASES POWER AND REDUCES PISTON ROCK.
  • STRUTTED FORGING FOR IMPROVED STRENGTH
  • 2618 AEROSPACE ALLOY FOR SUPERIOR STRENGTH

FORD COSWORTH
Ford Escort RS Turbo Fiesta RS Turbo “ 1.6L 8V “ CVH LNA
Wrist pins included: S730 $18.85 20.63mm - .812 x 2.500

 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
KE151M80 $901.73 80.00 3.150 Std. 3.131
79.52mm
5.197
132mm
1.528
38.81mm
 0.0  -.5cc .052
1.32mm
- -  7.5 8000XX $37.68 338

1
KE151M805 $901.73 80.50 3.169 0.020 - - 3169XC 344
KE151M81 $901.73 81.00 3.189 0.040 - - 8100XX $39.02 349


Ford 2.0 OHC Pinto • SOHC 8V
Wrist pins included: S627 $18.78 24mm -
.945 x 2.500
 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
KE221M9094 $901.73 90.94 3.580 0.006 3.028
76.9mm
5.000
127mm
1.638
41.6mm

49.0 

0
.040
1.0mm
.017
.43mm
8.169
207.5mm
 9.2 9100XX $37.68 428

1
KE221M915 $901.73 91.50 3.602 0.028 9150XX $39.02 430
KE221M92 $901.73 92.00 3.622 0.047 9200XX $37.68 435
KE221M93 $901.73 93.00 3.661 0.087 9300XX $37.68 445
KE221M935 $901.73 93.50 3.681 0.106 9350XX $39.02 450
KE221M94 $901.73 94.00 3.701 0.126 9400XX $39.02 455


Cosworth Sierra DOHC Scorpio 2.0L 8V
• N9C/N9E (OEM Pin size 20.63mm)
• Wrist pins included: S623 $18.78 20mm - .787 x 2.500
 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
KE246M86 $901.73 86.00 3.386 Std. 3.386
86mm
5.878
149.3mm
1.275
32.38mm
 42.0  -13cc .062
1.58mm
.013
.32mm
8.858
225mm
 8.5 8600XX $39.02 324 1, R
KE246M865 $901.73 86.50 3.405 0.500 8650XX $39.02 319
KE235M86 $799.08 86.00 3.386 Std. 3.386
86mm
5.878
149.3mm
1.275
32.38mm
 42.0 -.25cc  .062
1.58mm
.013
.32mm
8.858
225mm
 10.3 8600XX $39.02 337
KE235M865 $901.73 86.50 3.405 0.500 8650XX $39.02 332


Cosworth Escort/Sierra (YB) 2.0L 16V
Wrist pins included: S627 $18.78 24mm - .945 x 2.500
 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
KE103M91 $799.08 91.00 3.583 0.007 3.028
76.9mm
5.060
128.52mm
1.606
40.8mm
 45.0 -20.2cc  .040
1.0mm
+.011
+.28mm
8.169
207.5mm
 8.0 9100XX $37.68 414

1
KE103M915 $799.08 91.50 3.602 0.027 9150XX $39.02 420
KE103M92 $799.08 92.00 3.622 0.046 9200XX $37.68 426
KE103M925 $799.08 92.50 3.642 0.086 9250XX $39.02 432


Ford Duratec 2.0 Liter
Wrist pins included: S656 $18.71 21mm - .827 x 2.002
 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
K628M875 $838.27 87.50 3.445 Std. 3.268
83mm
5.758
146.25mm
1.122
28.5mm
 42.0 -23cc  .018
.50mm
.030
.76mm
8.543
217mm
 7.9 8750XX $39.02 309 1, 3
K628M88 $838.27 88.00 3.464 0.020  8.0 8800XX $39.02 315
K629M875 $838.27 87.50 3.445 Std. 5.758
146.25mm
1.122
28.5mm
 42.0  -7cc .018
.50mm
.030
.76mm
8.543
217mm
 9.9 8750XX $39.02 306 1, 3
K629M88 $838.27 88.00 3.464 0.020  10.0 8800XX $39.02 311
KE237M875 $901.73 87.50 3.445 Std. 5.758
146.25mm
1.122
28.5mm
 42.0  5.3cc .018
.50mm
.030
.76mm
8.543
217mm
 12.3 8750XX $39.02 338

1
KE237M88 $901.73 88.00 3.464 0.020  12.4 8800XX $39.02 343


Ford Duratec 2.3 Liter (OE naturally aspirated)
Wrist pins included: S656 $18.71 21mm - .827 x 2.002
306
 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
K628M875 $838.27 87.50 3.445 Std. 3.701
94mm
6.092
154.75mm

1.122
28.5mm
 42.0 -23cc  .018
.50mm
.030
.76mm
9.095
231mm
 8.9 8750XX $39.02 309

1
K628M88 $838.27 88.00 3.464 0.020  8.9 8800XX $39.02 315
K629M875 $838.27 87.50 3.445 Std.  -7cc  11.0 8750XX $39.02 . 1, B
K629M88 $838.27 88.00 3.464 0.020  11.1 8800XX $39.02 311
KE257M875 $838.27 87.50 3.445 Std.  5.3cc  12.5 8750XX $39.02 338 1
KE257M88 $838.27 88.00 3.464 0.020  12.6 8800XX $39.02 343 .


Ford Duratec 2.3 (OE DISI turbo)
Wrist pins included: S754 $18.78 22.5mm - .886 x 2.362
 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
K640M875 $838.27 87.50 3.445 Std. 3.701
94mm
5.930
150.75mm
1.270
32.25mm
 42.0 -13.3cc  .018
.50mm
.040
1.0mm
9.095
231mm
 9.5 8750XX $39.02 342 1
K640M88 $838.27 88.00 3.464 0.020 8800XX $39.02 347 .


Ford Focus ST225/Mondeo ST220 2.5L 20V
Wrist pins included: 23mm
 Kit Part #
 Your Cost

 
Bore
mm/Inch

Over
Size

Stroke

Rod Length

Comp.
Ht. 

Head
cc's

Volume 

Gasket
Thickness 

Deck
Clearance

 Block
Height

 Comp.
Ratio

 Ringset
(Included)

 Avg.
Wt

Foot-
Note
KE327M83 $1,216.16 83.00 3.268 Std. 3.669
93.2mm
5.630
143mm
1.201
30.5mm
 51.0 -15.2cc  .063
1.61mm
+.004
+.10mm
8.661
220mm
 8.5 8300XX $39.02 326 1, H
KE327M835 83.50 3.287 0.020 8350XX $39.02 331
KE227M83 $1,012.37 83.00 3.268 Std. -13cc   9.0 8300XX $39.02 330
KE227M835 $1,012.37 83.50 3.287 0.020 8350XX $39.02 335
KE227M84 $1,012.37 84.00 3.307 0.040 8400XX $39.02 340

Foot Notes (far right column)
1 - Most Wiseco Pistons have offset pins. (Pins must be offset, same as OEM, for quietest operation).
2 - Due to compression height that may protrude above the deck, it is recommended that a
1.00mm thick head gasket is used.
3 - Optional pin upgrade available.
4 - Utilizes extra deep valve pockets to expand the range of I-Vtec with big cams and milled heads
6 - These pistons have an oil ring groove that is lower than OE. Will not work with sleeves
with access hole if the oil ring is not pinned in place.
B - Build to order.
C - Stroker Kit for B25 stroker Crank.
D - Weight reduction possible.
E - With valve pockets unlike K557M Series.
G - Only with 2.5L connecting rods
H - Based on Volvo rod 23mm. Ford OEM 21mm.
P - Piston guided rod, washer required.
Q - Oil Squirter modification required.
R - Pin 20mm, OEM = 20.65mm (13/16)

1. Most Wiseco pistons have offset pins. Pins must be offset same as o.e. for quitest operation-pin offset will be opposite of direction of engine rotation
* Always run at least .030 piston to head clearance including gasket thickness.

* Always check piston to valve clearance - If using VTEC or like mechanisms-check w/ longer duration higher lift lobe.
* Some pistons are listed with a range of compression ratio's. The low number is determined w/ an un-cut deck and the higher number is determined w/ .030 piston to cylinder head clearance.

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