DSM 2G Sidemount Intercooler for 6psi powerdyne? Feedback please...

[Teufel Hunden]

Yeah, i can see your reasoning behind it.. that would be more of an effect on a supercharged car, for sure. Still though, since i'm not a huge fan of meth injecton alone, and wouldn't want to spend all that cash on a A/W IC, i woudln't consider it a huge sacrifice to put an A/A intercooler on there and drop the intake temps down below 100º. Course, if i was posessed by the devil or something and went the S/C route, i wouldn't leave the 6psi pulley on there either. :D

[ February 11, 2005, 11:30 AM: Message edited by: Teufel Hunden ]

[T-Punk]

i cant remember what the intake temps are with the powerdyne but they cant be that bad since so many people have run it without an ic, meth would probably be fine for a few extra hp and a slightly lower temp. I dont like the idea of running just meth either in most cases but in this instance i feel it would be one of the best options (till you run out of liquid). And no i wouldnt run with a 6lb pully either.

[grayman]

Thanks for all the feedback.

Yea, 6psi belt driven powerdyne seems fine (at least in winter time) with no TRC. by the time summer gets here I will already have HPTuners and will be able to handle stepped ignition retard.

So, is it bad for me to hope my stock fuel pump starts to go so I can buy a walbro255 that much sooner? yes, I see a 9 lbs pulley in the future. 6lbs aint no slouch though...completly different car.

[img]graemlins/burnout.gif[/img]

[T-Punk]

well, actually with your current setup the stock pump will probably be fine but when you upgrade to the 9lb pully you will want to upgrade the pume and possibly injectors. The rockers you have are probably helping a lot more now that you have FI. You need to dyno the thing to see where you stand.

[PiercedJD]

if you experience a signifigant pressure drop using a 2G eclipse I.C. you are doing something wrong. either you have a serious intake leak, or your piping is way too large.

you *might* see a 1-2 psi drop, but that would be offset by the cooler denser air charge.

any intercooled airflow will be better than non intercooled airflow, as the supercharger/turbo superheats the air as a byproduct of compressing it. the intercooler offsets that effect. if the pressure drop turned out to be signifigant, run a smaller pulley to put your boost back where it was before intercooling. you will still be making more power.

[Teufel Hunden]

Pierce, i totally disagree. a 2G DSM intercooler is tiny. Put that on a car that is flowing a larger volume of air than a 14B turbo is, and it would be detrimental to performance. As Corky Bell says, any IC is not always better than NO IC.

[ February 16, 2005, 06:36 PM: Message edited by: Teufel Hunden ]

[grayman]

Originally posted by T-Punk:
well, actually with your current setup the stock pump will probably be fine but when you upgrade to the 9lb pully you will want to upgrade the pume and possibly injectors. The rockers you have are probably helping a lot more now that you have FI. You need to dyno the thing to see where you stand.

Yea, I meant I sorta hope the stock fuel pump goes so that I buy a wahlbro and then transition to 9lbs pulley that much sooner.

As it is the fuel is fine. FMU kicks in...73-76 under boost...all good to go. Narrow band A/F reading full rich at 5-6 psi.

I am hoping to not need injectors when move to 9lbs pulley. Not everyone seems to need bigger injectors. I mean, I can do it...but it is just more money and more tuning. We will see. The 1.9 rockers might nudge the setup into needing bigger injectors as opposed to a stock valvetrain running a 9 pounder.

[grayman]

Originally posted by PiercedJD:
if you experience a signifigant pressure drop using a 2G eclipse I.C. you are doing something wrong. either you have a serious intake leak, or your piping is way too large.

Thanks for the input Jason. IC is a tough topic. I think I get the basics. (some of em, at least)

I do like the looks of the aftermarket...bigger,better, fatter 2gdsm. But, it is my interest in an 'easier' mounting (between fan/engine) that I was looking at a side mount for modiftication into the discharge system.

First the compressed air output temps need to be hotter than the engine bay in order to benifit at all from such a set up. I don't see that happening until I move up to 9 pounds of boost. Even then it might be close.

I am not against digging into the bumper. I need to learn more about routing the plumbing in and out of there as well as, um...airbag sensors?

There is a nice spot where the windshield washer bottle is...I could alwasy relocate a smaller washer bottle, etc...

[PiercedJD]

Originally posted by Teufel Hunden:
[QB] Pierce, i totally disagree. a 2G DSM intercooler is tiny. Put that on a car that is flowing a larger volume of air than a 14B turbo is

like, I dunno, the volume of air a big 16G or a 20G flows?

a 14b is rated in the neighborhood of 385-430 cfm. a 16g depending on who you talk to is rated from 470-550 cfm depending on configuration ( big or small and 6 or 7 cm exhaust housing. a 20g can put out around 550-650cm.

how much volume do you realistically believe a 3.8 at around 6 psi is moving? N/A it's only using around 370-450 cfm.

and it would be detrimental to performance. As Corky Bell says, any IC is not always better than NO IC.

on what basis can you say it would be detrimental? If you can provide some quantifiable data regarding this, maybe a dyno comparison or track numbers, or even some butt dyno comparisons.

in the meantime, 2G sidemounts can be had dirt cheap and they are more efficient than a 1G sidemount, which can easily support 300 whp

if it seems at all like a restriction, you can easily increase the size of the inlet and outlet to flow a bit more out of it. the core is quite well designed for a junkyard scavenged part.

how large do you think it needs to be to cool the air charge? granted it will suffer heat soak much faster than a large front mount, but it would work fine for running down the track with time to cool in between.

my experience comes from working on dsm's for about 5 years or so.

obviously a larger intercooler would work better but that is a cheap alternative.

have you ever seen a stock syclone/typhoon I.C. setup? and you thing a 2G dsm I.C. is small?