Twin .60/.48 dyno run!

[millhouse]

So here is how it went (I'll post vid's and graphs in the next day or two)....

The first run with tune right off the street came out to be 468.84hp@5000 rpm with the torque I believe in the 440 range. My tune was a bit off with both fuel and spark and the guys at VT engines were VERY helpfull!

After several tuning runs in which I adjusted the fuel quite a bit, along with bumping the timing up 4* across the board I ended up with 489hp@5000 rpm and 527lbs torque @ ~ 4500rpm.

The torque curve as expected is very broad, and I was eperiencing some odd spark breakup past 5200rpm. The graphs cut off at 5400 rpm even though I pulled past 6k. In the end though, as expected the small housings sputter out past 5k RPM even though the cam wants to keep on pulling to 6k.

[Erich]

Nice!
I would really like to have a direct comparison of the turbos you are using to my IHIs. I made 426/520 but GT40P<TFS heads and stock cam <F cam. They could be similar.

[millhouse]

Originally Posted by Erich

Nice!
I would really like to have a direct comparison of the turbos you are using to my IHIs. I made 426/520 but GT40P<TFS heads and stock cam <F cam. They could be similar.

It would be interesting for sure!

I'm really not sure what I'm going to do with this setup. It's producing more horsepower than I was expecting...and and low rpms at that. I may re-think my next steps...and perhaps take the f-cam out and throw something more mild back in. Really, I'm probably giving up quite a bit down low with the f-cam...and not getting anything back up top. It's either that or swap in some .63 housings. Decisions decisions.

[Fathouse]

Sounds like a fun setup. Do you have any pics?

Fathouse

[millhouse]

Originally Posted by Fathouse

Sounds like a fun setup. Do you have any pics?

Fathouse

Here is the best I've got until the video...

[millhouse]

Here are the dyno readouts…

[Erich]

millhouse 60/48s (automatic tbird pre 87) compared to my setup with IHIs (87-88 tbirds)
If you look at my latest graph, it is making all kinds of torque down low but it falls off at 4K. I would trade for sure!

Erich

[millhouse]

Originally Posted by Erich

millhouse 60/48s (automatic tbird pre 87) compared to my setup with IHIs (87-88 tbirds)
If you look at my latest graph, it is making all kinds of torque down low but it falls off at 4K. I would trade for sure!
Erich

Wow! That torque comes on strong (I'm sure your cam helps in that area more than mine), but damn it falls off quick! That's a huge disparity between the torque and hp levels too. I would think an upgrade should be in your not so distant future.

[stangjumper]

If you guys are running pump gas you are a little lean IMO. I would richen it up some.

[millhouse]

Originally Posted by stangjumper

If you guys are running pump gas you are a little lean IMO. I would richen it up some.

Mines fine...really. For some reason it shows leaner on the dyno than on the road.

[MOOVS]

Nice Millhouse!
It's great to see a comparo IHI's to .48's, I'll add the .63's.
I beleive the only big diff is that me and Erich are running the stock cams.
I've always debated about putting an F-cam in.

[MOOVS]

almost forgot- What boost levels are you running??
and Erich?

[millhouse]

Originally Posted by MOOVS

almost forgot- What boost levels are you running??
and Erich?

8psi for me. I'll check out the graph when I get home...as it's on one of "those" blocked websited here at work.

[Erich]

Nice to have all three flavors in a row!
10 psi for me.
I wonder how much heads are hurting the high end on my setup.
Erich

[millhouse]

Alright, forgive me as this is my first attempt at video editing.

This first link is the full video with background music in all of it's glory.

http://videos.streetfire.net/video/6...e8016f1f8c.htm

This second link is of the last run only without music.

http://videos.streetfire.net/video/7...e8016af285.htm

And just for S&G's, a burnout before a friendly skirmish 2 years ago (still turbo'd, but with differen heads, cam and exhaust).

http://videos.streetfire.net/video/9...e0007f601a.htm

[fred50stang]

Excellent video! Nothing like some hard hitting Coal Chamber! I gotta get it back in my rotation. And love the ending, one of my all time favorite shows.

[millhouse]

Originally Posted by fred50stang

Excellent video! Nothing like some hard hitting Coal Chamber! I gotta get it back in my rotation. And love the ending, one of my all time favorite shows.

Thanks! It took me a while to pick a damn background song...and that one just seemd to fit. Combine that with Mahna Mahna and it makes for a hell of combo!

[93Krwy]

very cool. I have a similar motor going together right now, TFS heads, stock cam, 1.7 rockers, and the same size turbos. Your numbers look great. How does she run on the street?

[millhouse]

Originally Posted by 93Krwy

very cool. I have a similar motor going together right now, TFS heads, stock cam, 1.7 rockers, and the same size turbos. Your numbers look great. How does she run on the street?

It a blast! Traction is non existant at anything but freeway speeds...and that's with nitto drag radial!

[eighty8gtfiveo]

great numbers guys..im getting ready to do a t-bird twin kit on my 87 vert..its the bigger of the two turbos that came on those cars.but im getting them upgraded to support 470 hp each, so it should be more then enough to get my vert in the nines. you guys running a blow through or draw through style maf? and suggestions or tips you can offer would be great!
thanks
ken

[millhouse]

I'm running none!

Seriously, I switched to a stand alone megasquirt setup which is speed density based.

I'd be curious to know what was done to the turbo's to get them to be able to support that type of flow.

[eighty8gtfiveo]

ill let you know whats done to them.
is the stand alone that much better? user friendly?

[millhouse]

Originally Posted by eighty8gtfiveo

ill let you know whats done to them.
is the stand alone that much better? user friendly?

It's not that it's user friendly (some are more friendly than others), but it's the idea of being able to adjust the tune yourself. I can tune and adjust me VE and Timing tables on the fly or at the track....and just like anything else, onced it's tuned...it's tuned. It also allows you to adjust the tune after you make mods...however small they may be.

[eighty8gtfiveo]

what did something like that set ya back?

[millhouse]

It's a DIY based system, so if you solder all the components together you save some serious coin...and allow you to do add ons in the future. For example, you can do add on's to control an electric fan, 2-step, water injection etc. for cheap. The biggest downside is you'll need to do some serious reading at www.megamanual.com ...as that is the only instructions you'll find. There is support forums at www.msefi.com that are greatly helpfull as well.

As far as price, it's all listed here...http://www.diyautotune.com/

The base DIY kit's can range from ~$150 to upwards of ~$300, depending on what kit (MSI or MSII) and if it's assembled or not. You'll need a wideband controller as well to really be able to tune, so that's another ~$200. You'll be able to recoupe some of the costs though if you have a decent MAF sensor, as it will no longer be used.

[eighty8gtfiveo]

whats the biggest difference between the megasquirt1 and measquirt2? worth spending the extra money for the 2?

[millhouse]

MSII has a finer resolution when it comes to pulse width and has different accel enrichment options. It's newer than MSI, and because everything is DIY based, it's not quite as refined. From my understanding however, it's overall a better system...which is the reason I went ahead and got the pcb v3 board. It allows me to upgrade to the MSII if I feel like it and gives me the extra capabilities such as low impendence injector drivers and a ignition driver.

[mustanggreg]

What do you use with no MAF? MAP sensor?

[millhouse]

Originally Posted by mustanggreg

What do you use with no MAF? MAP sensor?

Yep, the MSI and MSII have one on board.

[millhouse]

Here are a few vid's…

The dyno session…

http://videos.streetfire.net/video/6...e8016f1f8c.htm

And just tooling around on the streets…

http://videos.streetfire.net/video/3...ea0150d4a0.htm

[MOOVS]

you got me thinking Millhouse...
megasquirt...hmmmm.....
you really like it?
how long did it take you to learn how to use it with success? roughly?
ueser friendly?
do I have to be a computer wiz? cause I ain't.

[millhouse]

Originally Posted by MOOVS

you got me thinking Millhouse...
megasquirt...hmmmm.....
you really like it?
how long did it take you to learn how to use it with success? roughly?
ueser friendly?
do I have to be a computer wiz? cause I ain't.

I really do like it…it gives me complete control over the system.

It's really not that bad to learn. The most difficult aspects of tuning seems to be the warmup enrichment, setting the IAC and to a lesser degree, tip in adjustments.

From what I've seen, most are able to get a decent driving tune within a few hours. It's not unreasonable to get a smooth tune after a few days…and the actual interface to make adjustments is really quite good.

Really, you don't have to be a computer wiz to do any of it. There are a few tricky spots where you need to copy files from one directory to another…but that's really about it.

I myself built (soldered) the megasquirt together myself. It makes it much easier in the future to diagnose problems and do the cheap add on's that make megasuirt so valuable. Hell, the fan control mod cost me a few buck worth of components…as did the fuel pressure mod (allows you to datalog your fuel pressure).