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Author Topic: esr porting question  (Read 2374 times)

Offline bkstoffe

esr porting question
« on: September 25, 2014, 06:10:13 PM »
Sorry for all the questions lately... but here is another...
I bought a fresh cylinder (pro-x) that ESR ported for the previous owner before he decided not to use it.
under the reeds it is carved ESR PV11 77
I bought it with the understanding that it was a 350 powervalve cylinder, but recently I saw a post that said the 77 on esr porting meant it was ported for a stroker crank.
Is this true? if so would that be a 5mm crank?  I called ESR but no answer, I know Eddie is busy so thought Id ask the gurus here..
my  plan was stock stroke long rod crank but curious now..
thanks!

Offline taft372

esr porting question
« Reply #1 on: September 26, 2014, 05:15:14 PM »
that is a 350 cylinder probably a 78mm thats the first bore, with a 77mm crank which is a +5 making it a 370. the PV11 is esr's 11 porting.

 

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