ok as the title says how far can i go with these things / how far has these things been pushed?
ok i don't go in for that newbie bolt on or nothing crap
ok granted if a set up is made to "bolt on" it ok but common (yuck) bad enough all these thing look the same

ok has any one put the pressure to these?
i personally was thinking of setting up a miller cycle type of motor and stuff it in a p-71 crown vic (sleeper style) quite refined and fast sin a simple black with a 15-30% tint(cordin to what i can get away with)

btw incase ya not fimilar with miller cycle BIG boos(important) and full duration cam open til BDC intake but the big boost keeps the cly gasses from exiting the cylinder.. the motor is not trying to pull against a closed intake valve
as for computer control???

anyone gotz feedback on the theroy???

 

Sorry, I haven't a clue about what you are talking about? The 2000 Cobra R had a nice 5.4L in it. I have seen one of those supercharged and it made way over 500hp.

 

what in hell's name is he babbling about? Somebody hide his bottle!

 

For what its worth the motor in the new Ford GT is really nothing more than a really fine tuned 5.4L with a blower, that cranks out 500hp and 500 ft/lbs.

Mind you that they really whent through this engine with a fine tooth comb and it's also fully aluminum.

 

Yeah, they have a totally new reinforced block. Now Ford is claiming 550hp

 

oohhh, I wonder how long i'll have to wait to find one in a bone yard for my truck! I wonder if it could get my truck below the 10 sec mark in the 1/4 mi??

 

HMMM could be

 

Stock N/A 5.4's can handle around 450hp safely...any more is pushing it. L-truck 5.4's can generally go about 100 hp more. Sure, your hear of people with Lightings pushing 500+ rwhp but that is with good tuning and very risky. 5.4's used in the Cobra R and new GT are a different consideration. Forged internals in these cars are good for 800+ hp. The new GT mill is only related to the truck 5.4 by interal measurements (bore, stroke, bore center distances) everything else is completely custom for that car including the heads (modified Corbra R based 32V's). I don't think Ford is even going to offer these aluminum blocks as FRPP parts anytime soon if at all.

 

This months HotRod magazine has a good article on building up a 525hp 4.6L. They even used a Romeo engine. There are some good tech tips in there as far as PI vs Non PI heads, etc. Just in case anyone is interested.

 

bat_bro miller not in a can way ov thr heds betch it belt out 470 wid 5lbsneed good pump who guna grind thos stiks stok comp wont due

 

yuhuh, I stand under say u what

 

No offense, but I thought this was an english speaking forum. Between this one and the beginning post.....I'm completely lost. I understood what everyone else was saying though. geesh!

 

a miller engine uses a super charger to keep presure in the manifold, the theory is that creating vacuum uses horse power, also the cams are ground so that the intake over laps for 15% of the up stroke to feed pressure back into the manifold allowing the use of 2 points higher compresion even though it is a super charged engine, and the exaust timing is so that the valve opens half way down allowing the exaust gases more time to escape since very little power is generated past that point on the down stroke. this mille type engine is able to achive about 20% more power from 20% less fuel . A little expencive since the super charger with stock cams would give you more like 30 to 60% but would of course use more fuel. Do a search on the miller engine very interesting stuff. The mazda millunium has a miller engine but just try to get a salesman to answer that question.

 

camille you seem to know something ..ok i have a question ..back in 30's or 40's the miller was made and the rights instantly bought up ..skipping ahead to the mid to late 90's mazda starts production
who snatched it up? in other words who should we thank?(please tell me it wasn't ford)
come on the thing has the same output as a ~3 1/2 liter v6 out of a 2 liter so would the curve stay intack..5.4 should put out the power of a 9~9.5 liters engine oh my
ya see what i was talking about?
..sure its not a 2.0 coswoth but given the advantages

so how would it work i wonder custom cams a charger and big intercooler of course a computer

well the way i understand it a miller eliminates the short periods of parisitic drain of the intake(/exaust) valve being closed while the piston is still moving down(against it)
and
when the piston starts the compression stroke the intake is still open initially but the huge charge in the intake makes sure the gases in the clinder have nowhere to go until the valve closes

 

The Miller does not give the most horsepower but it does it efficently. Why the automakers don't use this old and proven set up is beyond me. The cost is mostly in development. Once that is done then total added cost would be only the addition of the supercharger, every motor still needs cams and computer. If only I had the resources I belive I have all the theory down. I could also get into thermal dynamics metalurgy, ring seal , controls and fuel systems research has been a hobie for 25 years read engineering hand books and lots of mags,(hot rod.mm\ff car craft4wheelerand so on. look at the ford GT it has alot of the theory right but look at the cost