There is no reason to do it, more rpm's does not = hp or speed. it depends on the powerband of the cams. After a certain rpm's the HP drops.
It's not a bad idea on many engines, but on a V10 with a ton of reciprocating mass, it's not a good idea. The V10 already has high-rpm oiling problems as it is, so if you spin it faster, you're asking for trouble.FE065 said:I get it now..I wondered this question instantly had everyone challenging my intelligence (which I knew was going to happen anyway).
I meant to say "I'm NOT going to do it to mine" which I've now corrected with an Edit.
"There is no way to raise it unless you can reprogram the PCM yourself." is all I really needed.
But THANKS for jumping on me anyway.. I've no intention of doing it to mine, but for the record, it's not THAT crazy of an idea.
Right on! Hit the nail on the head! :cheers:brianflynn said:Well if that was true F1 cars wouldn't be turning 15,000 rpm would they?
This, Your talking apples and oranges.
More RPMs do equal more speed btw, do you want the formula? The only formula you need to look at is the powerband of the cam if the cam loses hp at 5250 rpm how will making it turn more rpm's make more hp? Look at the dyno sheets people post you will see once it hits the max rpm for the cam the hp goes away.
Look at the powerband of the cam for the viper you will see once it gets to a cartain rpm the hp and torque goes away.
No it isn't a crazy idea but in order to get a real benifit from it you would have to build a new motor, since the rods, pistons, wrist pins and an array of other moving parts weigh to much to get to a high rpm like 7,500 without exploding. you would have to go with a steel crank, titanium rods tooled steel wrist pins and about $40K worth of other parts.
I gave you an honest answer and you come up with with a F1 answer that is beyond common sence.
The fumes from the zano have gone to your head.
You can't compare it to an F1 engine. HP is just a function of torque produced at a given RPM. If you can carry the torque high in the powerband, then you can make more HP, which allows you to run shorter gears. HP and RPM's are all about gears.FE065 said:This never ends..I shouldnt even perpetuate it.
You said, "There is 'no reason' to do it" (if there's no reason to do it, F1 teams wouldn't be cranking 15k rpms or more- there are reasons to do it or want it),
You also said, "more rpm's 'does not' = hp or speed. (but more RPMs always equals more speed of course,and I offered the formula)
If you weren't making absolute comments I wouldn't have countered them...
Thanks again.. I just asked because there's a Viper owner (who shall remain nameless) on the VCA site indirectly claiming 8000rpm capability, and even though he has aftermarket rods, porting etc, I wondered how easily he could get around the OEM computer's 6200rpm fuel shut off.
It looks like it's highly unlikely he's going above the RPM limiter doesn't it?