Wiseco Pistons

RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
Santaquin, Utah 84655
1-801-754-5338 or Toll free 1-866-700-5877
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 $613.93 (except 6 cyl.) Plus shipping.
Call toll free to purchase at: 1-866-700-5877

Nissan
Sentra SR20DE - 2.0L 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
K556M865 86.50 / 3.405 .020 3.386 5.366 1.260 45 -12 .036 .002+ 8.317 9.1-9.25 .866 8650xx 1
K556M87 87.00 / 3.425 .040 86 136.3 32 45 -12 0.91 .05+ 211.25 same 22mm 8700xx 1
K557M865 86.50 / 3.405 .020 3.386 5.366 1.260 45 FT 0CC
flat top
.036 .002+ 8.317 11:1 .866 8650xx 1,2
K557M87 87.00 / 3.425 .040 86 136.3 32 45 FT 0CC
flat top
0.91 .05+ 211.25 same 22mm 8700xx 1,2
Japanese domestic market SR20DET-note: some use dished pistons-use k556 series piston
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
K557M865 86.50 / 3.405 .020 3.386 5.366 1.260 60 FT 0CC
flat top
.036 .002+ 8.317 8.7-8.8 .866 8650xx 1,3
K557M87 87.00 / 3.425 .040 86 136.3 32 60 FT 0CC
flat top
0.91 .05+ 211.25 same 22mm 8700xx 1,3
240SX 95 - 98 KA24DE - 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
Call 89.50 / 3.524 .020 3.780 6.496 1.336 46 -22 .045 .003- 9.724 9:1 .827 8950xx 1
Call 90.00 / 3.543 .040 96 165 33.94 46 -22 1.1 0.08 247 same 21mm 9000xx 1
Call 90.50 / 3.563 .060 same same same same same same same same same same 9050xx 1
Call 89.50 / 3.524 .020 3.780 6.496 1.336 46 -9 .045 .003- 9.724 10.5:1 .827 8950xx 1
Call 90.00 / 3.543 .040 96 165 33.94 46 -9 1.1 0.08 247 same 21mm 9000xx 1
Call 90.50 / 3.563 .060 same same same same same same same same same same 9050xx 1
FJ20
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
K574M895 89.5/3.524 .02 3.504 5.512 1.267 -16.7 .866 3524xc 1
K574M90 90 .04 80 140 32.18 -16.7 same
300ZX 90 - 96 VG30DETT Turbo - $827.30 set
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
K549M875 87.50 / 3.445 .020 3.270 6.071 1.260 49.5 -9 .045 .005- 8.971 8.5-8.9 .866 8750xx 1
K549M88 88.00 / 3.464 .040 83 154 32 49.5 -9 1.1 .1- 227.86 same 22mm 8800xx 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
2. This piston is a flat top w/out valve pockets, to be used if verifying piston to valve and piston to head clearance.
3. JDM SR20DET have different chambers based on year-some are flat tops and some are dishes. Pick accordingly.
All Have iron cylinders.
* 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.
* Always check piston to valve clearance - If using VTEC or like mechanisms-check w/ longer duration higher lift lobe.
* Always run at least .030 piston to head clearance including gasket thickness.
* If piston appears to be different than expected, please do not hesitate to call Wiseco at 800-321-1364 to verify compatibility

Skyline RB25 DET
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
K578M865 86.5/3.405 .02 2.823 4.783 1.240 4 .045 .013 7.421 .827 8650xx 1
K578M87 87/3.425 .04 71.7 121.5 31.5 4 1.1 0.32 188.5 21MM 1
Skyline RB26 DETT
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
K551M87 87.00 / 3.425 .040 2.901 4.783 1.181 70 14 .045 .007- 7.421 7.9-8.25 .827 8600xx
K551M875 87.50 / 3.445 .060 73.68 121.5 30 70 14 1.1 .18- 188.5 same 21mm 8650xx
K551M88 88.00 / 3.465 .080 same same same same same same same same same same 8700xx
Skyline RB30 gtr-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
K577M865 86.5/3.405 .02 3.347 1.260 -11.3 .827 8650xx 1
K577M87 87.00/3.425 .04 85 32 -11.3 21MM 1
240Z 70-73 L24
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
K516M84 84.00 / 3.307 .040 2.901 5.236 1.500 42-45 9 .003+ 8.183 11.6 max .827 3307xc
1mm 73.68 133 38.1 42-45 9 .076+ 207.84 21mm
L20
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
K518M86 86.00 / 3.386 .040 2.744 5.748 1.500 9 .827 3387xc
1mm 69.7 146 38.1 9 21mm

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