13 HP GAIN

NEW SQUISH/DISH DOME MAKES MORE POWER

Dished dome makes more power. Flame front travel distance is minimized when compressed charge concentrated directly under spark plugs combustion efficiency is improved.
Tall shoulders of dome “squash” the mixture at TDC creating a hurricane to distribute the flames.

COMPRESSION:  (STATE DESIRED COMPRESSION IN CUSTOMER NOTES)

10.5:1 NOW SPECIAL ORDER, ADD $150
11.0:1 NOW SPECIAL ORDER, ADD $150
11.5:1 NOW SPECIAL ORDER, ADD $150
Compression is measured with standard head of 112mm height, 88.5mm stroke, and 1.4mm Reinze gasket.

FEATURES:

Deeper valve relief to accommodate most performance cams.
Larger diameter valve reliefs will accommodate oversize 46mm intake and 41mm exhaust valves.
With lite weight JE optional pins our piston/pin total weights 30% lighter than Borgo type 10.4:1 pistons/pins and about equal to Cosworth
This piston set includes standard wrist pins (109 grams) and conventional Ring Set.