Here is a visual comparison of mk3 Supra pistons: from left to right: JE piston, Wiseco piston, Toyota OEM piston. Other than the presence of teflon protective coating, there seem to be very few visual differences in construction of JE and Wiseco pistons. One notable difference seems to be the location of piston ring seats. The construction of both pistons seems to be similar although JE piston is lighter than Wiseco piston. Toyota OEM piston visually differs from both JE and Wiseco in both skirt length and internal construction, as well as the location of piston ring seats. Toyota piston is also the heaviest. Recommended minimum piston to cylinder wall clearance for JE: 0.004″. Recommended minimum piston to cylinder wall clearance for Wiseco: 0.0025″. More pictures: Pic#1, Pic#2, Pic#3.

This entry was posted on Friday, March 20th, 2009 at 8:32 am and is filed under Engine/Transmission, Tech Articles. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.