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> What pistons does everyone use in their racecars?
stugray
post May 2 2012, 06:50 PM
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I am building a Vintage 914-4 2.0L and I am curious which pistons everyone is running.

The engine will be very close to stock.
I have a Raby race cam and intend to increase the CR to ~9.5:1 and have the heads CNC ported.
I will be running dual 40 IDFs.

I know some locals who race in the RMVR club that run just the AA pistons & cylinders and said they have gone 5 seasons with no problems.
Then I hear that Keith Black pistons are not good enough for a racecar.

Suggestions? Opinions? Experience?

I currently have the stock (U.S) dished pistons (not Bus pistons), and wanted to get flat tops.

Stu
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wndsrfr
post May 5 2012, 08:43 PM
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[quote name='stugray' date='May 2 2012, 07:50 PM' post='1264251']
I am building a Vintage 914-4 2.0L and I am curious which pistons everyone is running.

The engine will be very close to stock.

I'm using JE pistons after grenading a KB doing DE's at VIR. My engine (2316) with 10:1 & using Raby 9560 can is decidedly not stock and I'm doing 5-6 DE events each season plus driving to/from the events--put over 7000 miles on it last year...
If you're street driving you don't punish the engine like DE's where a single 3-day event will put up to six hours of full throttle (and full braking) time on the car--professional race teams rebuild cars with that much time on them...naturally I expect it to run forever with only oil changes! <;o)

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stugray
post May 10 2012, 06:52 PM
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Bump

Thanks FERRET for pushing everyone else almost to page two
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stugray
post Jul 6 2012, 05:59 PM
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wndsrfr,

When you blew a KB piston, where/how did it break?
Did it blow straight through the top of the piston?

What gap were you running on both the upper & lower rings?

Curious

Stu
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manx
post Oct 7 2018, 04:37 PM
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I have used Aries and J E, JE has a lighter forge it talke a lot of work to make the Aries light. I run one of 3 cams a web 10x c or an elgin or a Delong .48 to .51 lift with stock valve diameter on a 1.7. Around 13 to1 cr and rev to 8.5k. The lighter piston is much better I also have them coated. This year i am running nikies in one motor and so far i am pretty happy. Generically I would say je just because they are easy to work with, have descent material and a lighter forging ro start with.
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