Wicked Mayhem

Ive read a bunch of threads on intercooler vs intercooler. People that have ran no intercooler on e85 love it, but if they havent tried it they dont talk good about it Hellbents10 seems pro non intercooler and e85 on lowerish boost.

I have a 408, 10.8:1 compression ratio. I have a s475, probably wont ever run over 15psi, and it will be on e85. Pretty much 100% street driven, daily driven as much as possible, just going to the track once in a while. I know intercoolers are one of the cheaper parts of the system, but if i can get away from running one and still have the truck perform right, why not? Less piping. Yeah if something in the turbo goes to **** parts will go in the motor. I get that, dont really care about that aspect of it.

Im asking from a perfomance stand point, on a street driven truck with max 15 psi, would you run an intercooler or non intercooled?

Razor

Yes.

I would run one.

SPRAYED 01

iTrader: (22)

Id would like to see an non intercooler e85 build with dual meth nozzles. Id say another big aspect would be a properly sized turbo. Like a large t6 on a 370 or so I think would be fine.

Hopefully people that have done it will chime in.

93camaro_zzz

iTrader: (13)

I would love to run a non-intercooled setup on straight methanol. It's been done before, but I would personally use an A2A setup on yours.

DHR Darren

iTrader: (1)

My build is well over 1200hp and I have no IC or water/meth kit.
If you have a good grasp you can do alot on non IC with good fuel & tuning.

3 window

iTrader: (1)

Please do tell!

DHR Darren

iTrader: (1)

Turbine efficiency does wonders.
Use the largest turbos you can spool or are allowed by rules.
Think about it, a large lumbering turbo builds less charge heat per # of boost than a small, tightly turned unit.

CFM is key.

3 window

iTrader: (1)

Not to hijack, but I'm gonna give it a shot with an s475/83 t4 on a 5.3 running e85. Only looking for around 650-700 whp, so I hope I can do it.

Ron_Stoppable

iTrader: (1)

Im about to run a non intercooled front mount setup. I had a non intercooled mid/rear mount turbo setup with no issues I ran a single meth nozzle pre-IAT sensor also but eventually sold the meth kit. New setup will be...
-LS3 6.2L SBE aluminum shortblock
-317 heads
-LJMS cam
-S475 T6 1.32 a/r 96mm turbine
-E85
-non intercooled

3 window

iTrader: (1)

How much power did you make?

SPRAYED 01

iTrader: (22)

You have me thinking now haha. Id love to ditch the IC and all the piping and just run a nice clean run from turbo to tb. Id loose a bunch of weight. I could even move my radiator and ac condesor to where the Ic was. Would get better air flow to those and I could put what ever size turbo I want in front the balancer. I think my next winter project is planned out.

Twinstang

iTrader: (4)

Those low boosts numbers should be fine for the street. But remember anytime you are compressing air it's gonna make some type of heat.

hellbents10

iTrader: (10)

With a SBF we have one running 170mph at 3400lbs, E85 from the pump no IC makes 1080rwhp. 10:1 comp solid BEI roller turbo cam.

TRIXLSXSUPRA

What kind of IAT's do you see on that set-up?

Forcefed86

iTrader: (4)

What kind of power is something like that making NA? How much boost?

Would you mind sharing the timing table and how much timing you pull per IAT temp increase? Or whatever strategy you use to pull timing. All the successful "hot-air" guys I've asked don't want to disclose this information.

Thanks!

hellbents10

iTrader: (10)

No pulling timing vs temp it has a DFI ECM. Timing is in the upper 20s with IATs pegging the sender at the 1/8 mile mark, prob 300ish at the stripe. I would guess 600na at the flywheel.

TRIXLSXSUPRA

Is that straight up pump E85 you said?

I can only imagine what kind of power and tuning window you'd have access to if it was intercooled but again you said no ignition adjustments are possible with the ECM you're running anyway....

Been a long long time since i ran anything w/o an IC lol

Forcefed86

iTrader: (4)

What kind of boost? So timing doesn't taper way down at peak torque and ramp back up at redline? Are you using a high overlap cam and really low drive pressure?

Thanks for the reply, looking at a hot air setup for the next project, just trying to get a handle on it. We usually triple the NA HP (and then some) on the intercooled SBE E85 stuff. Seems like alot of the good running hot air cars make pretty respectable NA numbers and aren't leaning on the turbo as much.

JoeNova

One thing to consider, is running some of the lower flowing stock head castings without an intercooler effectively lowers their power potential due to higher IATs.

Volume of air changes by 1/273 for every degree celcius it is heated. So if your IATs would be 110 degrees F with an intercooler compared to 260 degrees without, that 150 degree difference is 83 degrees celcius. 83/273 gives you a correction factor of about 30.4%. So your basically trying to move 130.4% as much air through your heads as if you were running at 110* IATs. If your heads are a restriction, lowering your IATs will allow you to cram a lot more air through them.

Aftermarket heads or even ported castings should be able to make due without an intercooler on a smaller inch motor.