NicD

iTrader: (7)

What was Anthony's full setup?

N4cer

iTrader: (11)

Man, I would have to call him. I only read a little of this thread because the topic said enough. Basically I don't see the point to wasting money on AFRs for an FI car where you're cramming air down its throat.

NicD

iTrader: (7)

That's kind of what I was getting at, that I don't think his combo is anything close to what Tony is describing here. I think the point of putting AFRs or any higher dollar aftermarket higher flowing head on an FI car is to maximize the efficiency of the combo and the thicker deck can't hurt either. Then again it's just 2 ways to skin a cat so to speak so pick your method.

I think the impressive part is that it's making ~800 rwhp on 15-16 psi on a D1SC with stock cubes and you need good flowing parts to make that happen. Us turbo guys have it easier to make more power more efficiently IMO.

crashinaz

iTrader: (35)

Given the displacement,boost level and cam... I think that thing is laying down VERY nice power.

2000 Tran Zam

iTrader: (2)

When your limited by the stock block, no, they arent critical, lol.

ninetres

iTrader: (35)

Explain limited.....I'm confused. Several folks have gone deep into the single digits on "stock limited blocks" lol. Maybe you were being sarcastic

I agree w/ Tony M, (sorry MM) but I believe better flowing heads provide greater efficiency at cramming air into a motor. If you boost 20psi to make 800whp....and I boost 14, to make 800whp (on an apples to apples combo except for heads)......which turbo is creating more heat? Then set them both at 20psi.....which makes more power?

I'm not doubting you MM, I admire you in fact lol
I even used a video of you running 10s rowin gears in a presentation back in my college days!

MIGHTYMOUSE

iTrader: (59)

same thing is happening in the cylinder to make the same power.

if you turn up either you will lift the heads at the same time.. the 30* cooler your intake charge *may* be is negligable

ninetres

iTrader: (35)

Cylinder pressure lifts heads (for the most part), which would be greater with higher boost. Right?

MIGHTYMOUSE

iTrader: (59)

no

boost is a measure of pressure in the intake, nothing to do with cylinder presssure really

torque is a better measure of cylinder pressure (excluding detonation, that can make quite a bit more than tq can)

ninetres

iTrader: (35)

I know what boost measures. Take two builds, same cubes, same turbos, same compression, one has stock 317 heads @ 20psi, the other has AFR 225s @14psi. Which has higher cylinder pressure?

Tony Mamo @ AFR

iTrader: (13)

How about the fact the .750 deck thickness in the AFR can handle alot more cylinder pressure before it starts lifting head gaskets. Its literally twice as thick as a stock casting.

Another perk of the efficient head (and superior aftermarket casting)....alot of people switch to our product for that very reason.

Can't deny the fact that more boost is certainly the great equalizer....an aspect of performance an N/A application doesnt have the luxury of relying on.

Tony

PS....The answer to ninetres riddle is whichever combo makes the most torque (and has the highest BMEP numbers)

NicD

iTrader: (7)

more boost = more restriction = less efficient = more heat generated = more power wasted = greater chance of detonation = more octane required = hell if I can think of anything else LOL!

2000 Tran Zam

iTrader: (2)

You forgot it sounds cooler too

2000 Tran Zam

iTrader: (2)

Sorry, I meant stock bottom end, lol.

Meaning that on the stock bottom end your limited to mid 5 to low 600 rwhp to be running safe and have the least chance to blow the motor (pending a good tune).

So people dont usually start lifting heads until 18 or so psi or more correct? Well theres not a turbo out there that you can run 18 lbs on without it being super innefficent and make high 5xxrwhp.

most people run 8 lbs on stock bottom end, maybe a bit more if they are confident in the tune/gas. Thats my point.

speedracer5532

iTrader: (8)

You have to be a dumbass to make a statement like that.

ZL1Killa

iTrader: (17)

in a perfectly setup and built motor with close attention to details it is truly crazy what power it outputs

N4cer

iTrader: (11)

Theres a mature response. Prime example of why cousins shouldn't breed.

TopFlite

This gives me great hope for my build. I was thinking I would have a hard time obtaining 640 rwhp with a 383 stroker kit mated with a 90mm single turbo at about 18-19psi. Very encouraging numbers for staying with stock cubes!!

ninetres

iTrader: (35)

Speedracer was right, your comment was stupid and completely unrelated......in a thread that actually had some VERY interesting information/findings/opinions.

speedracer5532

iTrader: (8)

I knew I shouldn't of wasted my time making a comment to N4cer since he obviously doesn't have a clue but you can only read so much stupid **** before you say something.

BTW Tony, VERY IMPRESSIVE reults.