advice on h/f build
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advice on h/f build
im currently building a 87x97mm, h22 head on a f23 bottom end naturally aspirated.
around 12.1cr
i dont know were its going to stop making power but fuel cut on a stock f23 is 6.5k (i think) and im afraid i would need stronger and lioghter connecting rods.
only crower makes aftermarket rods and they cost around $800, a little pricey but im sure is worth it...
i wanted to have a little assurance on the bottom end but right now, cant see myself dropping 800 on crowers.
so i found a company that can make connecting rods made out of 4340 chrome-moly steel, two piece forging, h beam construction and shot-peened with arp rod bolts, for a fraction of the crower rods.
with this little information at the moment, would these be a considerable (worth it) upgrade than just cryotreated/ shot peened oem rods?
thanks in advance
around 12.1cr
i dont know were its going to stop making power but fuel cut on a stock f23 is 6.5k (i think) and im afraid i would need stronger and lioghter connecting rods.
only crower makes aftermarket rods and they cost around $800, a little pricey but im sure is worth it...
i wanted to have a little assurance on the bottom end but right now, cant see myself dropping 800 on crowers.
so i found a company that can make connecting rods made out of 4340 chrome-moly steel, two piece forging, h beam construction and shot-peened with arp rod bolts, for a fraction of the crower rods.
with this little information at the moment, would these be a considerable (worth it) upgrade than just cryotreated/ shot peened oem rods?
thanks in advance
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Re: advice on h/f build
If those other rods are a fraction of the $800 Crower rods, I'm not sure what you can expect for quality or strength. They may be perfectly fine for what you're doing, depending on max RPM and your power output goals. The same could be true of the re-worked OEM rods.
Don't worry about the stock fuel cut. That's done in the ECU, and you're already going to need to use an ECU that can be tuned, so the fuel cut (rev limit) can be changed at the same time. I don't really know anything about Accord engines, but the normal rules still apply about what's safe for rod to stroke ratio and bore to stroke versus RPM, etc. Engine geometry is engine geometry.
Don't worry about the stock fuel cut. That's done in the ECU, and you're already going to need to use an ECU that can be tuned, so the fuel cut (rev limit) can be changed at the same time. I don't really know anything about Accord engines, but the normal rules still apply about what's safe for rod to stroke ratio and bore to stroke versus RPM, etc. Engine geometry is engine geometry.
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Re: advice on h/f build
the quality of the rds is what im most worried about. im expecting the max of 8k rpm and a vague 210-250whp.
so what ur saying is a cryyotreated and shotpeened oem rod might be just as effective as the rods im looking aT?
and i meant to say rpm limit on f23s are 6.5k... i guess i should read up more on engine goemetry
so what ur saying is a cryyotreated and shotpeened oem rod might be just as effective as the rods im looking aT?
and i meant to say rpm limit on f23s are 6.5k... i guess i should read up more on engine goemetry
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Re: advice on h/f build
I'm saying that if you're not making a lot of power, you might not need super strong Crower rods.
So are you saying that F23s shouldn't be revved past 6.5k for safety, or are you saying that 6.5k is where the factory rev limit is set in the ECU? I'm still confused.
So are you saying that F23s shouldn't be revved past 6.5k for safety, or are you saying that 6.5k is where the factory rev limit is set in the ECU? I'm still confused.
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