Dyne testing

[c2xejk]

Mike and I did some more dyne testing and tuning.

We started by putting Mike's Eclipse (bone stock 24-valve V6) on the dyne for reference purposes. Peak numbers are 168whp and 177 ft-lbs. So this dyne may read a little lower than other dynes...

Next up was my van. For the first run we added an UDP. That gained hp, but not peak hp... The max gain was about 4 hp and 5 ft-lbs torque in the 3K RPM range.

Then we did a 3rd gear pull (instead of 2nd gear...) That increased peak whp by 8whp!

Then we made several runs tweaking the spark advance. The result was whp increased by ~4whp.

Next up we added 1" plenum spacer and whp was up by 2 whp and torque was up by 7 ft-lbs.

Bottom line:
Torque 179.5 ft-lbs @4k PRM
whp 156.7 whp @5k RPM

By my estimation, that is about a 37 whp gain over stock. More if the dyne indeed reads a little low.

I am still looking for somebody with a stock or near stock 3L vehicle to dyne.

Ed Kelly

[c2xejk]

A couple shots from todays dyne testing

[Shadow24V]

that was an auto eclipse right? nice #s on the van, considering stock is 141 i hope i can put down some good #s myself, if i ever get it running lol

[c2xejk]

5-sp manual Eclipse.

[Ondonti]

[c2xejk]

For those that are curious, here are some of the dyno pulls.

Here is the difference we made by tuning the spark advance.


Here is a comparison between were we started the day (005), were we ended and the day (010), and what happens if you put a stock plenum and 46mm TB on that setup (011).


And here is a comparison of a Bone stock 24-valve 3L Eclipse (003) vs my Voyager (009).

[c2xejk]

Quote:

Originally Posted by irocelectric93 BLAH more pointless bickering. We are all on the same team so why must we fight? At any rate ed i am interested in a set of these heads if they prove worthy. Im sure they will.

I would say they have proved themselves... Starting with on the flow bench they were within a few CFM of Brent's big valve heads. Now they are making power on the dyne.

I believe they are capable of making even more power if some other limitations of the current intake/exhaust manifolds are overcome.

[Ondonti]

If we didnt have the stock rev limiter then I think a cam would also make a huge difference with the right supporting mods.

you can see the sohc 24v is peaking 500rpm later
I think the current generation of 270hp nissan v6's all make peak power above 6000 rpms.

I was never a believer in advancing the timing till early summer 2005 (seeing that you dyno tested it with success)

[Ondonti]

I think it would be nice to see a car with a manual ECU on the dyno.

[c2xejk]

Not sure if we can make as much power up high as the 24v, but I believe there are definitely some more gains to be made... I was rather surprised the difference that an extra 1" of runner length made...

I have several things on my list of things to try. Some additional intake manifold modifications and tweaking the cam timing are high on the list...

Without the spacers, I think the engine is either cam limited or TB limited.

While we were there, we talked to a co-worker of mine about some of the details of why advancing the timing (a little) works... and the things you need to watch for. I think Mike learned more than he wanted about spark hooks...

[roguetrip]

Ed, are you running stock cat,exhuast,muffler?

Sounds like some good numbers if you can get a basline 3.0 12v to compare too.

[c2xejk]

I am running 2.5" pipe and two mufflers, no cat.

I have been looking for a 3L for some baseline checks.

To be blunt I am looking for a car that people feel is "representative"... If I grab a _stock_ car and the numbers come out lower than everybody is claimed, it will be deemed a "low performing engine that has problems and thus not representative..."

[irocelectric93]

So what all did the van have done to it when you pulled 156?

[c2xejk]

Ported: cylinder head, lower intake, plenum
60 mm TB
CAI
2.5" Exhaust
UDP
Spark Advance tuned the dyne
5-sp trans

[irocelectric93]

Hmm very basic mods indeed. Other than the heads...thats all stuff you can do in a couple hours. I need to send you guys at KMP a lower intake to have done.