my own personal hell

[Mossman]

I also read this entire thread start to finish and find it to be weird yet intriguing and hard to stop reading.

Why is it weird you ask? Generally in 3 pages I'd have to see something new or learn something new to keep reading, but I learned absolutely nothing in the 8 pages of this thread yet I was hooked.

Also I found it unbelievable that you walked 5 miles holding some car part to go to autozone of all places to get it disassembled (that part was a few pages ago, the pages after fried my brain so I forget details). That's seriously harder than Ive ever worked for anything car repair related, lol, my s52 swap was less physically demanding :)

Also I want to be the 1st to comment on your shenanigans torques #s...Do you realize that 258 ft/lb at 6500 rpms = 319hp. If you're gonna make up power #'s quote your torque really low and your insano HP really high, harder to disprove with the magic of arithmetic.

Good luck with FI, you are definitely ambitious and get the job done thats for sure.

WAIT WAIT WAIT This is important, wtf do you mean by chassis preload that you're going on and on and on about???

[mikeday]

Enjoy your driveshaft vibration after cutting the trans output shaft, it was long for a reason.

my e34 facepalmed in the driveway from this thread

[bataangpinoy]

so. you used the e crank, and i pistons with i rods.
and the head was machined about .0015 inch? hmmmmm.....
how noticable is the power increase?

[Jb325is]

Wow, I just read your thread in the e34 section on bfc. You should definitely be doing more reading and less posting. 160/260 to the wheels at 7.0:1? That's a horrbile lie. 22psi of boost on a 3.3L m20 with ITB's and a performance chip? Bolting an m20 head to an s52 block? Titanium rods? Seriously?!

[whatt18yahoo]

i used e rods, i thought i mentioned that somewhere in here but maybe i didn't i don't remember and don't cae to go looking for it. and frankly the dyno never lies but math can decieve you. oh and the tranny output shaft may end up causing problems later but for now it's fine and frankly i don't care about it for now. i am putting in a new tranny in january

[whatt18yahoo]

oh and chassis preload is weird and pretty hard to describe without taking u for a ride but its kinda like this say i'm going into a left hand turn on the highway at say 80 miles an hour normally a car will lean to the right (even if the turn is banked) now with my car if say the wheel is turned 15 degrees left (not an accurate measurement or guess just a number) the car will start to lean right and then slam itself left almost as if the left tires blew out. this is really a crude description of what happens frankly i'd rather take you for a ride to explain what is going on.

[transatlantic0207]

Q: What is the "prelaod" and what does it mean in the Computerized Chassis Weights software?

A: Preload can come from several sources. Take for example a coil over shock that has a threaded collar for supporting the spring. If the collar has been turned up a number of times so the spring is compressed even when the shock is fully extended then the spring would be preloaded. In other words there is a load on the spring before there is any shock compression. On the whole car, due to spring placement, suspension positioning, and tire diameters, etc., you can have a preloaded affect just like the single coil over unit. Adjustments (in or out) on the weight jack screws is the most common way the preload is changed. The preload in the software is simply the amount calculated in pounds.

While weight jacking is a quick and simple way to change the handling of the race car, it is still a crutch. Follow in instructions in the manual on how to interpret the preload and determine what the race car wants for springs.

C&P....sue me!

[whatt18yahoo]

thanks transatlantic0207

that is a super lengthy and ultra detailed description but thanks seriously

[Red88]

the dyno never lies but math can decieve you.

I'm sorry, what the fuck are you saying?

[Mossman]

i used e rods, i thought i mentioned that somewhere in here but maybe i didn't i don't remember and don't cae to go looking for it. and frankly the dyno never lies but math can decieve you. oh and the tranny output shaft may end up causing problems later but for now it's fine and frankly i don't care about it for now. i am putting in a new tranny in january

The dyno never lies but neither does the equation for finding horsepower. HP = a torque*RPMS/5252, so unless you want to go back and change your torque figure by 5000 rpms I can infact say that you're full of shit. Maybe you got your HP and Torque graphs mixed up but then we'd have to deal with the fact that no thrown together lower compression than stock, stock everythinged m20 will make 250 hp at the wheels in a million years, no matter how much of it is rattle canned blue.

Also your preload thing I still don't understand, it sounds dangerous frankly, more like installation error or a bushing binding up and popping or something like that. Have someone familiar with building non death traps take a look at it.

[whatt18yahoo]

mossman???

hmmm lets see off the top of my head i can think of oh say a billion examples you are wrong

for starters any deisel
secondly
a honda 4 cylinder
a bmw inline 6
my inline 6
a deusenberg inline 8
a cadillac v16

all of these are prime examples. go back to v8 school and keep working on chevy and ford v8's i know you're not a mopar man because then you wouldn't have said a word reguarding torque. edelbrock may be your god but i'll stick with praying to the almighty Karl Friedrich Rapp, Gustav Otto, Franz Josef Popp, and Max Friz.

if you don't know who these guys are go away. no scratch that take your v8 math and return to the abyss from whence you came

[transatlantic0207]

frankly the dyno never lies but math can decieve you.

Leonhard Euler, Euclid, Aristotle, Plato, and Pythagoras are rolling in their graves because of that statement!
Math is the most absolute thing around you, never forget that!
If you were good at it you wouldn't be experiencing 'preload' with you car. I am slightly giving you benefit of the doubt because you at least have some car knowledge. Though preload has nothing to do with the weight of the end user! Either you need to adjust your suspension properly or your car is structurally weak and it just a matter of time before you kill yourself! Either way until you figure it out and fix it, you're driving a death trap.

And I would calm down with moss, your numbers are skeptical at best, I find it very hard to achieve those numbers with homemade stroker in a car thats larger and heavier than the e30. Without FI, how do you get 250 at the wheels, which would mean even its rated higer. HUH? I call until you post the dyno sheet....


And you never answered my question regarding what ratio differential are you using.

[whatt18yahoo]

transatlantic0207 its a modded 3.15 like i said it's an lsd.

i never said math was wrong but it can be misleading
for instance we'll take 2 engines of similar horsepower and displacement work them out and for fun i'll use v8's (i despise v8's even bmw v8's)

bmw The S62 engine produces 294 kW (400 PS; 394 hp) at 6600 rpm and 500 N·m (369 lb·ft) of torque at 3800 rpm

Mustang GT's 5.0 power was 260-hp (194 kW) at 5250 rpm and 302 ft·lbf (409 N•m) of torque at 4000 rpm



so here we go bmw first(naturally)
HP = torque*RPMS/5252
hp = (369*3800/5252)
266.98400609291698400609291698401 rounding down = 266.98 hp @ 3800 rpm

now ford 5.0[coughs peice of sh@t]
HP = torque*RPMS/5252
hp = (302*4000/5252)
230.00761614623000761614623000762 rounding down 230.00 hp@ 4000 rpm

even at relatively close rpms the toque is worlds apart and frankly so are the horsepowers.

you're right math is a constant it never changes but it can be misleading

for instance look at a super high revving suzuki hyabusa engine and compare that to a caterpillar diesel. work the math out however you want math is decieving you

on chevy and ford v8's it's fine-sort of but don't argue the power of an inline 6 look at a whole bunch of dyno sheets of a 4 cylinder a 6 cylinder gas and diesel and v8 diesel and gas and inline 8 v10 v12 v16 and w12

they all are different and some of them worlds apart different furthermore look at forced induction dynoed versions of the same then come back with another inconceived argument.

[nando]

what?

this is worse than the guy who wants to do 350whp out of an S50. He's actually intelligible, and might actually build a badass engine, even if it won't quite reach his goals.

[lifeiskaos]

In the process of this build I will probably use an angle grinder and shave some weight off of crank, harmonic balancer and flywheel.

I dont have time to read the whole thread, and I dont even know why I'm posting this because I'm sure someone has given him shit for this, but DUDE! no angle grinders to rotating parts of your engine. Throwing any of that off balance = BAD.