Quote:
Originally posted by Ron1
I find it interesting that the link you provided is the exact write up from KB that I looked at 5 years ago. I don't put a lot of stock in any manufacturers claims, since they are in the business of selling you that product. Having said that, and in looking at the changes that have occured in the technologies over the past 5 years, the new alloys now being used for the forged pistons have eliminated the expansion problems that may have once existed. Ross, JE, Speedpro have all gone to the new alloys. All I can do is quote from publications by Joe Pettit and David Vizard, who make it very clear, that if you have the intent at some point of adding N2O, hypers are not the way to go.
If the expansion issues were real 5 years ago, form what I have seen and read recently, the issue was resolved.
I could be wrong, but for my application, I selected forged over hyper, knowing that the motor would see N2O sometime down stream. And the price difference between the 2 have come a lot closer.
Ron
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Well apparently you didn't read the whole post, because there was 3 links, not just the one to universal machine.
i'm puzzled why you believe that the head piston engineer at universal machine, which is very large piston mfg has no credibility just because he works for the company, yet david vizard, a book writer does ?
As far as the new alloys go ... if forged pistons no longer have a higher expansion rate than cast pistons then why are they still using significantly more clearance with forgings ?
Since this has become a pissing match between you and i , I'm gonna end my end of it with this last statement which i believe, and which i stand by and which is completely logical .....
I would not use hyperutectic pistons in a funny car or even a drag strip only car or even a heavily nitroused or supercharged motor ... but for a street strip car with a light dose of nitrous or boost , there is nothing wrong with the new high performance hyperutectic pistons, in fact they hold a couple of atvantages over forged pistons for street use, not the least of which is price.
Thats it, i've said my piece ... we're still friends right?
