MAD good turbo info...

[gloryaccordy]

brrrrRRRRRREEEEHHHHH*pffffff*

Also, here are some formulas for you to figure out what turbo's best for you:

pounds/min = P x w x D x 29 / ( 1278.72 * ( T + 460 ) )

P = 14.7 + the boost you want in psi
w = engine speed in rpm
D = displacement in cubic inches (hint: F22 = 131 ci, F23 = 137, F20 = 121)
T = intake charge air temp in F (~130 for intercooled, non-intercooled is anyone's guess)

A lot of those graphs are metric cause they're mad JDM...you have to use the air flow formula:

ft^3/min = w x D / 3456

then convert that to meters^3/s :

ft^3/min * (1 meter^3 / 35.31466) * (1 minute /60 seconds)
or
divide the air flow result by (35.31466*60) which is like 2100.

So basically I'm going with a T3 with the .45 trim; I'm gonna push for 8-10 intercooled and very well tuned psi and hopefully 200whp. W/an H22 crank and wild cams I hope to break 250whp without increasing the boost...but by then I'll prob. upgrade to a 16g or something equivalent. Anyways if you can follow that and calculate the airflow you'll have when you want it, you can pick the best turbo possible for whatever you want to do...

[h22sparkle]

Why do all that opening up the block unless your building the shit for higherboost. If you dont have the money hold off then build it. Or you can boost it as much as you can blow it then build it.


OR you can boost it see where its at then get the most out of it you can get 300 realisticaly out of that block. But you get the pooint im tryin to make here it costs money you dont need bullshit cams and a crank to do all of that just turn up the boost and get a equal lenght manifold providing that your f22 can sustain that kinda punishment.

[gloryaccordy]

But why turn up the boost if I can make the engine more powerful from the get-go? Would you rather make 200whp @ 8psi or 14psi? See what I'm saying? Plus, regrinds are so cheap for the F22...I can get Delta to make me one for like $130 all together. And the H22 crank is like $350 brand new, so that's not a big issue either. If I can open up the engine more up top I'd rather do that than crank up the boost and blow something; the top of the rev range is where all the power is made.

[d112crzy]

word, u need to make as much Hp and TQ as u can n/a, then boost it. the only thing u want to watch out for is not to get too much of aggressive cams, and no high cr.

so, what ru gona do to the cams exactly?

[h22sparkle]

thats why you get a bigger turbo

[gloryaccordy]

No, a bigger turbo won't work if you're not moving enough air through it to begin with. I.e., I couldn't just slap a 20G on my engine and make 400HP; that turbo has to move 400HP worth of air through it at ~10-14psi. Every turbo has a specific boost range and corresponding power output, and if your engine isn't capable of making the power for that boost the turbo will be laggy and inefficient...and if things are really bad it will surge. Fortunately, the F22 is basically the same in dimension as the stock 4G63-T so using the same stock turbo for boost isn't bad...but once you start upsizing turbos you need an engine that will make more power for the same amount of boost. That's why you'd need a T3 with a bigger trim or a 16g or something for the H22 as opposed to the regular .40 T3 or 14b for the F22.

As for the cams, I plan on getting the regular step-up upgrade (I think the 268 cam) but asking them to lower or eliminate overlap for boost blowby. Basically, when you have a turbo engine, an N/A cam won't work as they're designed to keep air flowing through the head, so they allow some intake air to escape through the exhaust valves to benefit flow velocity. With turbo engines though the higher pressure would push out more air than necessary, so they close the exhaust valve earlier and allow the intake air to accumulate and pressurize more.

[Clueless]

I'm gonna be using a 14b turbo... maybe upgrade to a t-3 if the 14b doesn't cut it...


Caleb

[d112crzy]

y not the Big 16g? its almost as good as the t3.

[Clueless]

...20g maybe.... I don't know, I guess I've seen cb7's with t-3's getting good numbers.

Caleb

[gloryaccordy]

T-3's come in like 30 trims...it can be an "upgrade" or a "downgrade".

[Clueless]

T-3's come in like 30 trims...it can be an "upgrade" or a "downgrade".

Like I said... I'm sticking with the 14b for now, I'll get a big t-3 when the motor is built... I'll planning on building it after I finish this setup(I have two extra engines laying around).

Caleb