Blown s50 e30

[brodee]

Not sure when I'll be up there again. Hopefully around Christmas. The trip this past weekend was hectic. We were short parts and had to do a run back to OKC on Friday after I got there on Thursday night. Stayed through Monday night still working on the car.

[el_4ever]

Chill out buddy, nobody is ripping on you.... If I stumbled across it I would think it was cool too. But the fact is, Powerdyne blowers suck badly and that looks like a pretty rough motor. Just observations thats all...

I never said anyone was ripping on me. I said that everyone just loves to find faults in everything, it gets old.

ok.

[matt325is]

Its not THAT much power really.. Here are the results of a Dinan (Powerdyne) e36 m3. 271 whp 234 wtq Sure it'll get the job done, but I'd expect more...


Reason for no FMIC is that superchargers dont heat the air nearly as much as turbochargers do. Remember that Turbo's use very hot exhaust to spin the turbine, this heat is transfered to the air coming in...

matt

[Ryan Stewart]

Yes but you have to do something to compensate for the fact that you are compressing the hell out of the air, that heats it up.

Brian runs water injection for pump gas and 110 for the track and made 343 (rear wheel of course) on the WI pump gas. It also makes plenty of torque across the band. S/Cs have thier purpose. Its a simple system that has some limitations but a good setup can make plenty of power.

[Mtriple]

My Dinan/Vortech SC'd M3 made 321rwhp on pump gas with water injection, 11 psi, and tuning from AA. Very reliable, very useable power when tuned correctly. The beauty of the Vortech blowers is that they can handle 20 psi with no issues. The Powerdyne's cant exceed 9psi. Vortech's are also gear driven, Powerdyne's are not.

And Ryan is correct, the intake charge air gets very hot due to the compression of air. Supercharged cars benefit from FMIC's just like turbo cars...

[Ryan Stewart]

I ma trying to talk brian into water/air IC (more simple piping) but he thinks its too complicated and something can go wrong on the track so now he has decided to just run 110 all the time.

Too many times has he has run out of water.

Did you run an intercooler on your Dinan setup?

[kylebes1]

With a water-to-air intercooler is there any need to refill anything? I never have seen one or how they really work.
I think you could get hp from anything if you can drop the incoming air temp, the big thing about FI is that when the TB closes or is partially closed and you still have boost the air charge heats instantly and to extreme temp.

[matt325is]

With a water-air intercooler you do not need to refill the system. Basically, it has an efficient intercooler core, in a housing with water. The water is circulated using a pump, hoses, and a water cooler (mounted like an oil cooler). So the water is pumped through the cooler, into the intercooler core, cools the charge air, and keeps circulating.

It is different that water injection, where you have a tank which you need to refill everytime it runs low (has a water injector in the intake, so at boost it sprays, and cools combustion temps, and also raises the compression a little bit).

I know compressed air heats up, but supercharges tend to produce less heat than turbochargers, that was what I was going after.

matt

[fritzintn]

LOL, thats my dyno graph that was posted above. Just to clarify (or rather make some excuses :)), the dyno run was made after a short 30 minute cool down after a 4hr drive. The dyno room was ~100degrees that day. So yes, heat soak is a bit of a problem.

Others have dyno'd the powerdyne/S50 combo around 285-290whp so I think theres room for improvement.
http://forums.bimmerforums.com/forum...d.php?t=245008 <- Link to other powerdyne dyno numbers

:shrug:

The heat soak isn't all that noticable on track however since I'm not a good enough driver yet to take advantage of all the power.

That being said I'll probably be swapping in the powerdyne/s50 combo into the E30 and running a built and turbo'd S52 next summer in the E36

[Mtriple]

Did you run an intercooler on your Dinan setup?

No, I looked into it but its extremely difficult on the E36 cars because of space. AA does it with their kit because the Rotrex blower is so small. There was a company called Rhinewest that offered it for the Dinan E36 cars. If I recall it was like 2500 to 3000 dollars for the plumbing and IC.

Just a little too much...

[fritzintn]

RMS also makes an air to air intercooler setup for the vortec based kits. They have dropped in price recently from 2500ish, down to a more reasonable 1500.

However the installation is quite an ordeal from what I've heard.

[kylebes1]

What wuold be the problem with mounting the s/c on the passenger side if you wanted to us a FMI? I understand why they are mounted on the driver's side, since not many people use intercoolers with them a shorter tube is a positive.

I would rather get it mounted on the passengerside and use a relatively simplet air-air intercooler. Is there a large efficiency difference in air-air and water-to air?

[Ryan Stewart]

Air/air would be better since the air pases through moreso. The water/air basically uses water coils over a small space the air goes through.

Maybe ask the guys at BMPD because IIRC they have a supercharged and intercooled project car. Hence that horrid bodykit.

[kylebes1]

they used a FMI, mounted the s/c in the normal place, ran tubing down, to the passender side to around to the intercooler, throught the intercooler, back up to the intake, a very long distance for the boost to travel.

[Bryson]

the powerdyne blower fits into an e30 the most easily if I remember correctly

..the only thing that doesn't clear is the tensioner pully to the radiator
powerdynes are worry free blowers, not for the tuning enthusiast, although a SC in a 24v e30 is pretty enthusiastic