nice looking unit

 

Great info...Thks for posting! Keep us posted with more info.....

 

Back from the dyno

It's back from Dyno Day at Aggressive Performance. Given the rapid format of the meet, it wasn't practical to swap intercoolers between pulls. So I can compare results of the same car on the same dyno, but not on the same day.

With the stock IC I had peak Hp of 125 at around 5500rpm. And 134ft/lbs at around 3500rpm.

The Bell intercooler shows 130HP at around 6200rpm. The curve is a lot more consistant. Peak torque is unchanged but it looks like the curve has shifted up the rpm range and there is a consistant increase of about 5ft/lbs throughout the curve past the peak.

While the measurement is consistant, it's hard to compare different days. I also don't know how much the fan adds to the mix. 5 HP isn't enough to be felt subjectively by the butt dyno, but I do notice the smoother power at higher RPM's. I think this is a good replacement IC for someone running a larger drive pulley or driving competitively where heat soak is an issue.

Those on a budget would do better saving $450 and just buying a good pusher fan.

 

mucho thks for the info....could you recommend a good pusher fan and any install info? I think I could use one on my SC...

 

mucho thks for the info....could you recommend a good pusher fan and any install info? I think I could use one on my SC...

I use one of these (you can see it in the first post):


http://www.ffdynamics.com/products_ultracoolingfans.htm


But now I forget the size, but 10" sounds right. These guys push a lot of air for minimal current draw. Looks like they have gone up in price since I bought mine. They are not extremely quiet, but neither is my exhaust. I wired it up using a relay and fuse tap on the engine fan as the signal. My engine fan is set to run all the time when I turn the key.

Looks as if they go a bit cheaper on eBay:
http://cgi.ebay.com/ebaymotors/10-I...YCLONE-ULTRA-ELECTRIC-COOLING-FAN-1100-CFM-_W0QQcmdZViewItemQQitemZ110689737462

I think I paid $65 for mine.

 

The FF Dynamics fans are superb quality, and push more air/use less amps than competitors fans. I run one on my 89SC. The fan approach is ideal for a daily driver SC MR2 because of the design of our cars where the sc is only engaged here and there with time in between for the fan to help cool the IC, especially at stop lights where the intake air temps tend to really creep upwards. I run an intake air temp gauge on my car, and rarely see temps over 120 -130 degrees while doing street driving. at those intake temps, i do not really notice any significant power loss or hesitation.


for any kind of racing type use, an IC core upgrade plus better air flow to it would be beneficial of course, and i am sure I'd start to see intake temps well over 150 if I was pushing the car for extended high speed runs on boost.

 

Sounds like expensive advice. Thanks for it.

 

Do you by chance have both dyno plots that you can post? That is a pretty big difference in the peak power rpm's. And did you try to smog with that IC on there, or did you just take it off to avoid any potential hassle? The law surrounding IC's is a little foggy from what I've seen.

 

Do you by chance have both dyno plots that you can post? That is a pretty big difference in the peak power rpm's. And did you try to smog with that IC on there, or did you just take it off to avoid any potential hassle? The law surrounding IC's is a little foggy from what I've seen.

I'll scan and then email the dyno charts to you. Su superimposed them on one sheet but I'll have to set the detail to high to make it clearer.

I took off the Bell unit and put on the OEM for smog. I'm really not sure of the technical legality and I don't want to give them any reason to poke around more.

 

I would guess that moving the peak to a higher RPM means it is flowing better.
Another guess would be higher torque would be from cooling better.

 

was this on an oem pulley?
how much boost were you seeing on the oem intercooler vs the aftermarket one?

thanks for sharing the results

 

was this on an oem pulley?
how much boost were you seeing on the oem intercooler vs the aftermarket one?

thanks for sharing the results

HKS pulley. The dyno was showing about 9.5psi on OEM IC and around 10 with the Bell. I'm not sure if that is within the error of measurement of the equipment.

 

hmm usually when the ic flows better you drop boost...
and i would be criuous too see the results on a bigger pulley

 

candygram4mongo sent me the dyno plot a while back, finally getting around to posting it.

 

you have an HKS pulley and only made 124 hp? mine made 147 on a dynojet

 

dynapack != dynojet. Probably similar numbers on a dynojet, main take away point should be the difference made by the IC... we dont know that, we know the IC + fan being about 5 hp over a large area. Chances are, as already said, better bang for the buck spending 450 elsewhere.. like tuning.

 

most IC upgrades do not add power like a bigger pulley or exhaust upgrade would, but instead keep the power you already have by helping avoid heat soak. the real test of the IC would be to do dyno runs after a couple of hard pulls.

That said, when I got my intake air temp meter hooked up in my car (175mm pulley, intake and exhaust upgrades, IC fan) the temps I was seeing under normal hard driving were not that high and recovered quickly, so unless you are racing, I now think the stock IC with a good fan is more than enough fro a fast street car.

 

Looks good! I was thinking of getting a Bell liquid-to-air when the time comes.

Are you running all stock S/C plumbing? It's time for 2.5" plumbing all around.

 

Looks good! I was thinking of getting a Bell liquid-to-air when the time comes.

Are you running all stock S/C plumbing? It's time for 2.5" plumbing all around.

Depends on who you are asking, but all my plumbing is stock. And the intercooler was plenty hot after the third pull. Since we wanted something to bolt up to the stock mounts we were limited as to size and position.

Your A2W system is the way to go for anything where you are going to be under boost for long periods of time. And it will look cool.

Please post pics when you are done.

 

$550+ for a 4% increase in hp doesn't appear on the face of it as the best bang for the buck on a stand alone mod.

Anyway, I was stuck by the torgue curve maximum at 3500RPM when Toyota lists the maximim torgue development at 2500RPM?

A result of the HKS pulley and the modified IC?

 

I think it's funny how similar my dyno is to yours, mine stumbles a lot more on the top end though. Car had: stock IC, 180mm pulley, 7agze.

Never did figure out was wrong, ended up parking it in my driveway about 6 months ago when I got layed off. I want to try and start fixing it, but I tried the other day and the damn thing WILL NOT start, even wire jumped to another car. The driveway is also too steep for my gf, me, and her dad to push it in the garage. I guess I'll ask for help pushing my car for my birthday lol.

 

that's actually very low in comparison to what i did with a similar set-up. i was running an HKS pulley with a Blackstone intercooler with a pusher fan underneath and made 143.7 hp/matching torque in safe mode on a dynojet.

 

I didn't say it was good, just similar.

 

that's actually very low in comparison to what i did with a similar set-up. i was running an HKS pulley with a Blackstone intercooler with a pusher fan underneath and made 143.7 hp/matching torque in safe mode on a dynojet.

american-zero, filonin-2, and I all used the same dyno. While we can make some comparisons between each other, we can't do the same between other dynos. There is a lot of variability between machines, just like you will find a certain amount of variability between different days on the same machine or even between successive pulls.

Assuming drivetrain loss of around 15% and engine rated at 145hp at the flywheel comes out to about 123hp at the hubs. Which seems right around where we are measuring. and engine rated at 143.7 at the hubs comes out to almost 170hp at the flywheel. There has been a lot written about the differences between the dynojet and dynapack numbers. Each machine has their fans. Maybe our cars might read higher on your dyno. Can't say.

 

I guess I'll ask for help pushing my car for my birthday lol.

Roll it by the tires.
You wouldn't think it, but the extra leverage really helps.