Wiseco Pistons

RPM - RON'S PRECISION MACHINE, INC.
3461 W. 250 N.
Hurricane, Utah 84737
1-435-673-0724 e-mail

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Shelf-Stock Pistons. Sold complete with pistons, rings, wrist pins and circlips. (piston set)
Most piston sets on this page are $530.00.
Call toll free to purchase at: 1-866-700-5877

Acura/Honda
Integra 94-01 B18C1 Vtec 1.8L 16-valve DOHC
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K541M81 81.00 / 3.189 Std. 3.433 5.433 1.181 41.5 -12 .028 .017- 8.347 8.6-8.9 .827 8100xx 1
K541M815 81.50 / 3.209 .020 87.2 138 30 41.5 -12 0.75 0.43 212 same 21mm 8150xx 1
K542M81 81.00 / 3.189 Std. 3.433 5.433 1.175 41.5 FT -4 .028 .022- 8.347 9.7-10.2 .827 8100xx 1
K542M815 81.50 / 3.209 .020 87.2 138 30 41.5 FT -4 0.75 0.56 212 same 21mm 8150xx 1
K566M81 81.00 / 3.189 Std. 3.433 5.433 1.185 41.5 5 .028 .013- 8.347 11.8-12.25 .827 8100xx 1
K566M815 81.50 / 3.209 .020 87.2 138 30 41.5 5 0.75 0.33 212 same 21mm 8150xx 1
K566M82 82.00 / 3.228 .040 8200xx 1
Integra 90-00 B18A1/B1 Non-Vtec 1.8L 16-valve DOHC
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K541M81 81.00 / 3.189 Std. 3.504 5.394 1.181 45 -12 .028 .020- 8.347 8.3-8.6 .827 8100xx 1
K541M815 81.50 / 3.209 .020 89 137 30 45 -12 0.75 0.50 212 same 21mm 8150xx 1
K542M81 81.00 / 3.189 Std. 3.504 5.394 1.175 45 FT -4 .028 .026- 8.347 9.3-9.8 .827 8100xx 1
K542M815 81.50 / 3.209 .020 89 137 29.85 45 FT -4 0.75 0.66 212 same 21mm 8150xx 1
K566M81 81.00 / 3.189 Std. 3.504 5.394 1.185 45 5 .028 .016- 8.347 11.1-11.6 .827 8100xx 1
K566M815 81.50 / 3.209 .020 89 137 30.1 45 5 0.75 0.40 212 same 21mm 8150xx 1
K566M82 82.00 / 3.228 .040 same same same same same same same same same same 8200xx 1
Integra GSR 92-93 B17A1 Vtec 1.7L 16-valve DOHC
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K542M81 81.00 / 3.189 Std. 3.205 5.208 1.175 42.7 FT -4 .028 .012- 7.998 9.1-9.4 .827 8100xx 1
K542M815 81.50 / 3.209 .020 81.4 132.3 29.85 42.7 FT -4 0.75 0.3 203.15 same 21mm 8150xx 1
K566M81 81.00 / 3.189 Std. 3.205 5.208 1.185 42.7 5 .028 .003- 7.998 10.9-11.25 .827 8100xx 1
K566M815 81.50 / 3.209 .020 81.4 132.3 30.1 42.7 5 0.75 0.08 203.15 same 21mm 8150xx 1
K566M82 82.00 / 3.228 .040 same same same same same same same same same same 8200xx 1
RSX-S 2002 K20C
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K568M86 86.00 / 3.386 Std. 3.386 5.472 1.181 50.5 -9 .025 .007- 8.351 8.8-9.0 .866 8600xx 1
K568M87 87.00 / 3.425 .040 86 139 30 50.5 -9 0.63 0.18 212.1 same 22mm 8700xx 1
K573M86 86.00 / 3.386 Std. 3.386 5.472 1.181 50.5 8 .025 .007- 8.351 11.5-11.7 .866 8600xx 1
K573M87 87.00 / 3.425 .040 86 139 30 50.5 8 0.63 0.18 212.1 same 22mm 8700xx 1
Civic SI
93-2001 B16A Vtec 16-valve DOHC
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K542M81 81.00 / 3.189 Std. 3.047 5.290 1.175 42.7 FT -4 .028 .010- 7.998 8.8-9.0 .827 8100xx 1
K542M815 81.50 / 3.209 .020 77.4 134.4 29.85 42.7 FT -4 0.75 0.3 203.15 same 21mm 8150xx 1
K566M81 81.00 / 3.189 Std. 3.047 5.290 1.185 42.7 5 .028 .000 7.998 10.75:1 .827 8100xx 1
K566M815 81.50 / 3.209 .020 77.4 134.4 30.1 42.7 5 0.75 0 203.15 same 21mm 8150xx 1
K566M82 82.00 / 3.228 .040 same same same same same same same same same same 8200xx 1

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

* If piston appears to be different than expected, please do not hesitate to call Wiseco at 800-321-1364 to verify compatibility
* 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.

CRV/Vtec 97-02 B20B with B16A Head
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K545M84 84.00 / 3.307 Std. 3.504 5.394 1.181 42.7 -18 .028 .020- 8.347 8.4-8.8 .827 8400xx 1
K545M845 84.50 / 3.327 .020 89 137 30 42.7 -18 0.71 0.5 212 21mm 8450xx 1
K545M85 85.00/
3.347		 .040 1
K567M84 84.00 / 3.307 Std. 3.504 5.394 1.181 42.7 2 .028 .021- 8.347 11.3-12.0 .827 8400xx 1
K567M845 84.50 / 3.327 .020 89 137 30 42.7 2 0.71 0.5 212 21mm 8450x 1
K567M85 85.00 / 3.346 .040 8500x 1
Prelude 92-01 H22
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K544M87 87.00 / 3.425 Std. 3.571 5.636 1.219 53.8 -14 .028 .015- 8.655 8.3-8.5 .866 8700xx 1
K544M88 88.00 / 3.464 .040 90.7 143.15 31 53.8 -14 0.71 0.38 219.85 22mm 8800xx 1
K544M89 89.00 / 3.504 .080 8900xx 1
K572M87 87.00 / 3.425 Std. 3.571 5.636 1.219 53.8 7 .028 .015- 8.655 11-11.5 .866 8700xx 1
K572M88 88.00 / 3.464 .040 90.7 143.15 31 53.8 7 0.71 0.38 219.85 22mm 8800xx 1
K572M89 89.00 / 3.504 .080 8900xx 1
Civic SOHC 92-95 D16Z6
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K546M755 75.50 / 2.972 .020 3.543 5.394 1.174 34.6 -15.4 .028 .008- 8.347 8.5:1 .748 2973xc 1
.5mm 90 137 29.81 34.6 -15.4 0.71 0.2 212 8.5 19mm
Civic SOHC 96-98 D16Y8
Kit Part # Bore MM / Inch Over Sizes Stroke Rod Length Comp Height Head cc's Dome/Dish Volume Gasket Thickness Deck Clearance Block Ht. Comp. Ratio Pin Diameter Ring # Foot Notes
K543M755 75.50 / 2.972 .020 3.543 5.394 1.148 32.8 -14 .028 .033- 8.347 8.5-9.0 .748 2973xc 1
.5mm 90 137 29.15 32.8 -14 0.71 0.84 212 8.5-9.0 19mm

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

* If piston appears to be different than expected, please do not hesitate to call Wiseco at 800-321-1364 to verify compatibility
* 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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