Amen to that brotha!!

 

Actually, the more I think about it, the more I think this thing will make retarded low-end. Unlike most boosted ported 4 bangers, they are turbo'd. So their lack of low end is due to no boost and basically being N/A, however with my SC application, boost will be abundant at all RPM. High flowing heads love air flow, so a lot of air at low rpm SHOULD equate to a large reservoir of low end torque, and with a 2.9" pulley, it should scream all the way up to 7500+ rpm before hitting peak power

 

my thoughts exactly, thus I don't want to turbo yet, what are u running for cams

 

Duration @ .050" lift: 224 Int/224 Exh
Lift: .475" Int/.475" Exh
LSA: 110 (will be adjusted later with cam gears)

Thats more aggressive than the cams GM used in the 300 hp LSJ build, and that motor made peak power at like 8300 with a 2.9" pulley

 

so. how are you going to adjust lsa via cam gears.

 

Your not afriad of shooting that air out the exhuast becuase of the overlap at the lower rpms?

 

first. you can not change lsa with cam gears. when your magic powers have the ability to do this, lemmie know.

second, you are not going to be moving enough air to use the cams. i will bet money that a 272 car will smack you around like a broke hooker on friday night due to the really small powerband you're going to have.

fact vs fiction
reality vs dream world. it's all fine and dandy to dream, but when the reality of it comes to light. you will kick yourself.

 

I thought he said he was going to run juice?

 

motor for motor. the 272 car will clean house

 

damit, Brian beat me to it.

LAS is a fixed number via the grind.

that cam you "want" to run is more aggressive then the cam used on a car that made in excess of 600whp on a larger turbo....any on of the ****-tastic blowers you want to use will never move the air needed for that power level.

heres the cam he's copying.


that car made the upper reaches of power at 21-23psi on a turbo moving over 98lb/min+....where are you gonna get that sort of air-flow? no blower to date will do that on a LSJ


that was done with a F.A.S.T standalone, do you plan on going standalone and most likely loosing power steering to get that 8300rpm rev ability?

let alone being forced to run a throttle cable because you will loose TBW and 99% of the system will also leave you with out power steering(only one comes to mind that'll let you keep it)

 

brYan damnit!

i figured you spelled it the same, you could at least get it right numb nuts.


hehehehhehe


they do make blowers that will flow that air. the lsj doesn't make enough power to turn that blower.

hi, top fuel called. they want their dreams back

lawl

i go now

 

of course not, when you dream that never happens...if only practical applications fallowed that same path.....

thats why i said "no blower to date will do that on a LSJ" dickweed!

and i spell it with a "Y" as well, thought you were one of the "normal" people that use "I"

 

i tried being nice but you guys got the point across to haha

 

i have learned that nice only gets you do far.

bryan, im not normal. you know this. hell half the "lsj tuners" know this as well.

 

i'm not here to be nice, i get to much joy from telling people there retarded.

most of this is basic engine common since....

the big thing is that people believe this guy and will fallow him down the same flawed path.

after all, he did pop his motor in the first place!

 

First off, you CAN (ARE ABLE TO) adjust the LSA on a dual over head cam engine. Why? Because one cam controls only exhaust valves, the other only controls intake valves. So changing the lobe centerline of either cam, will in effect change the lobe seperation angle.
Second, my cam grind was decided entirely by Crane Cams. I sent them a list of everything I was doing, what my rpm goals were, what type of induction I was using, and many many other misc details. I will absolutly trust crane cams engineer over some guy online who thinks he knows what he's talking about. Plus I worked at an engine building shop for several months, and asked almost non-stop questions about the pros and cons of different cam profiles, and N/A vs. Turbo vs. SC. I have definitely done my research. Just because I'm 19 years old, doesn't mean I don't know anything. Anyway, naysayers don't effect me regardless, I've dealt with them through out my build. So talk as much trash as you want.

 

As much as I hate to agree with Cam, I am pretty sure you can change LSA. LSA is the timing between intake and exhaust. By changing the timings with intake and exhaust, you can change LSA.

 

LSA=lobe separation angle......

if i phase the center line of an angle around with a cam gear, that angle never changes.

the whole cam changes "angle" per say as you turn it on the gear, not just one set of lobes.

now if we change how both the cams face on another, then you can effect the angle against one another, but the LSA of a single cam as a whole does not change.

but then again, thats not changing your true cam LSA, your only changing it across the two....as you increase or decrease one, the other will go in the opposite direction....
wow, you worked at a engine shop for a few months! you must know every thing, and know exactly what your doing then huh?

we all know that months of experience is all that matters!

you have much to learn.

your RPM limits are "lofty" at best, you plan on finding such abilities where?

you can call comp, crane, ect all day long and tell them what you want....but giving lofty and fairly unreachable RPM limits make those calculations null and void. RPM goals and power bands are a massive back bone to cam grinds.

the fact that your 19 means you haven't done **** for engine building in your life, you've read the internet and you think you've got it all under control.

as long as people think you have a clue as to what your doing, you can bet your ass you'll have "naysayers" because there are flaws in your plans.


please do what you want tho, i'll love reading your posts when you post how your results arnt what you "thought" they were going to be.

 

Umm, thats what lobe seperation angle is. The seperation angle between the centerline of your intake lobe and your exhaust lobe. A single cam in a DOHC engine has no lobe seperation angle without the other cam. You are thinking of cam timing.

 

Im actually learning something today

 

You have two cams, not one.

 

1. Your knowlage of cams is clearly sub par.
2. Please quote me where I said I know everything.
3. I told crane I wanted to make peak power around 7500 rpm, with good mid range power as well.
4. You will be sad to know, that there will be no such post of being disappointed, because as long as my car runs, I won't be disappointed

Now if your done, this thread is an update thread for my build, not me defending myself against ass hats like you. Go cause **** in some other thread

 

double whammy. :tard:

cam. it's simple. some of us have more experience under the hood of cars on various powerplants than a couple months. you simply can not absorb everything in that short span of time. what crane thinks is going to happen and what really happens are usually two different situations. think about this in a pesimistic fashion, it's closer to reality

 

you'll be disappointed when it doesn't make the power you want...this much i know.

how much power did you tell them you wanted to make? as i said , your shooting for a cam thats more aggressive then a cam used to support 600whp?

why not be smart and realistic with your power goals and aim for power in a usable rpm range?

hey Witt!!!!!!!!



that is all

 

yu stolededed muh pic