We have been working with the people at JE on our pistons since
1978. Through our racing engine research and on track experience we have
continuously modified our designs for better performance. We won four
SCCA National Championships using the same piston designs you can now buy
off our shelf. Professional engine builders all over the world use our
This light weight version of the standard 10.5:1 piston is
reduced by 58 grams. This is achieved by CNC internal milling.
JE Lite 362g, JE STD 415g, Cosworth 382' Mahll 402g' Borgo
470g Larger diameter valve reliefs will accommodate oversize 46mm intake
and 41mm exhaust valves.
Standard liners can be bored to 85mm. All sets come with standard weight wrist pins (109
grams) and rings.
Compression of 10.5:1 is measured with standard head of 112mm height
and 1.4mm Reinze gasket
Deeper valve reliefs accommodate most performance cams
Larger diameter valve reliefs will accommodate oversize 46mm intake
and 41mm exhaust valves
This piston set includes standard wrist pins (109 grams) and
*Deves rings. You should consider the following upgrades:
- Upgrade to light weight pins (77 grams) for an additional $60.00.
- Upgrade to Total Seal conventional ring set with ductile compression
ring. $27.00 extra (*the standard Deves cast compression rings
can fail in ghigh rpm engines above 7500.).
- Upgrade to Total Seal gapless second ring set for more HP.
- Upgrade to Total Seal gapless top ring set for even more HP.
(check out HP gains at Total Seal HP Gains).
If we do not stock the appropriate compression piston
for your engine needs, we will be delighted to help you with a special order
set. We also sell single pistons and pins if you damage one and need a
spare. Please call us for more information. 1-800-552-ALFA.
Some examples of special 85mm pistons we have already made for
our customers are listed below. Special order SUPER LITE piston
sets are $901.18. Please call us for more information.
85mm 10.5:1 Twin Spark