Inliners International Forums General Discussion Blown and Injected 4200 turbo project...

Re: 264/264
A recommendation giving nominal duration only tells you nothing.
DOHC engines have very different lift rates than pushrod engines, and 4 valve different again.

Getting real close to dyno day..

down to making up the test EFI harness... and confirm the dyno booking...

efi-diy,

sounds great,
what have you changed since the last time you had dynoed it?

MBHD

This time its to break-in the built turbo engine and map the NA fuel curve for it.

Once its off the dyno its going into the truck right away. I'll run it for a week NA then re-install the turbo which will essentially be bolt on. The CanWest picnic is coming up faster than I want and its my dead line to get on with it.

Good luck at the dyno (hope it's not too cantankerous).

Its alive and dyno tested in NA mode - absolute results will be released at the CanWest BBQ next weekend - complete with video.

Teaser...

From the initial pull to the final pull with fuel/spark/exhaust tuning picked up almost 95HP.

Congrats, 95, that's quite a bit.

How soon are you anticipating dyno pulls with boost?

Thanks for the response.
I'll give that 2 thumbs down.

MBHD

Whats wrong Hank can't wait for the final numbers..

This is the '06 built turbo motor internal changes are:

- lowered compression from 10.1 to 8.2
- strong internal parts
- ported head and custom cams (intake 222@0.050 .453", exhaust 224@0.050 .456") installed with 0 overlap for the turbo
- 46# injectors

I was not asking for HP or torque numbers, I was asking what all is different with the engine..

How much flow did you get out of the cylinder head?
Larger valves installed? etc,etc,etc,...

I am sure it made a lot of HP & torque.
I am excited for you!

So, now that you mention numbers,,,,,,,just kidding.

MBHD

http://img512.imageshack.us/i/scan0002eq6.jpg/ <<< flow sheet

Stock size valve for the '06 head, the combined valve area when you add the 2 intake or exhaust valves together is bigger than a 2.19" BBC intake valve.

Actually, this post should have been difficult for the usual mouth-breathers to attack, but then it struck me: they have no idea what I said, so where to find fault?

but... why take chances?

I'll post the dyno plot once I get it scanned in..


so.. this is in naturally asparated mode no turbo, no NO2 - just the motor..

Peak HP 353 @ 6800
torque 280 @ 5300

average HP 3000 - 6400 275

It'll run on 87 octane with the 8.2:1 CR without boost..

If you overlook the strong internal parts its a 2006 4200 with reduced CR (stock is 10.2:1) ported head and camshafts.

At WOT from 5300 to 6900 the engine was pulling 5" of vacuum so with a bigger throttle body there is more power to be had. Also the cams were set up for -1 deg overlap (for the turbo) if the cams were adjusted to have say 20 deg overlap for NA mode the engine would make more power.

I think with the cams setup for NA mode, bigger TB, stock CR and long tube headers another 40 - 50 HP more can be found.

M.

efi-diy,
these figures are just on an engine dyno correct?

Definetly sounds like the TB is too small for NA mode. Got some pics of your custom intake maifold?

BTW,what size is the stock TB ?

I thought you had some figures w/the turbo also???

Keep it going!!

MBHD

75mm >>> TB

Engine >> correct so this is at the flywheel.

Testing was done with the stock intake, exhaust manifolds and TB size.

Once the turbo is added the TB is fine.

Run 29 ... not the max HP run but the best chart I have.

Run 33 353HP @6700 296 lb/ft torque @5300

Engine configuration

K&N air filter into a 90* elbow
Stock size throttle body 75mm
stock intake manifold
46# injectors
Ported head - intake port minor clean, exhaust reworked
Cams - ground by comp cams on custom cam blanks supplied by emtech motorsports. intake 222@0.050 .450" lift, exhaust 226@0.050 .456" lift. Cams were installed with -1* overlap for turbo usage.
8.2:1 compression (stock is 10.2:1)
EFI - megasquirt V3.00 and MS2
Ignition Ford EDIS module and coils
Custom 36-1 crank trigger wheel.
Stock exhaust manifold with 6' of 3" pipe with 2 mufflers except for last runs.

Video of a few dyno runs.. The good engines going in tomorrow. Tonight weather permitting the stock engine is getting another 5psi boost at the track...
http://www.youtube.com/watch?v=M5o-i2cMINo

So did you make it to a track?
The extra 5 psi,what will the max boost be then?


MBHD

I did make it and the extra boost found every pressure joint in the charge air piping - been fine at 8 psi for months..

Didn't get to make a full run without a coupling popping off.. fix one then the next weakest one would go.. points to where improvements need to happen for the permanent install.


Time for the new engine to go in.

can't wait to see the new torque #'s with the turbo on the new motor. then the lower rpm torq# will be nice and fat.

good job!
tom

When I at the track the other evening a fellow racer asked how the new engine did so I told him.. he kind turned his nose at the number.. so I gave him a reality check.. if this was a 500ci BBC (twice the displacement) it would make 700hp NA - that kind of rattled his brain a bit.

I thought Chevrolet raced this engine in a baja truck type race & were making 500 HP N/A, what all was done to that engine?

Anyone?

MBHD

That was pure 5.0 L race engine that was loosely based on the 4200. Falconer engines bought the design from GM after powertrain canceled the race engine. My guess is that the LS V8 honchos got their nuts in a knot that this funky 6 was making more power than the LS engines and got the program killed. http://www.falconerengines.com/bio/bio_l6.php

Nice hot rod L6, but Falconer's Base Price is about $43,000 too much at the moment.

After 5 frustrating days of chasing nagging issues (engine had to come out - don't ask) the turbo is finally on the good engine and man alive it sure likes the ported '06 head and the cams! Boost at part throttle is so fast its scary. I gave it half throttle and at 20 mph the back end got loose...

Next up is to secure the charge air piping...

I'm hoping my good intake will be here in 2-3 weeks...

IGOR's evil cousin is alive...

Way to go! Hope to see pics soon! Tom

Good to hear, looking forward to pics when you get time.

I got word today that my intake manifold is almost done... yeah this has been a long time coming.. 18 months

Its the last piece of the puzzle that I am waiting for, once installed I can finish the permanent charge air piping and head to the chassis dyno for the final tune.

In the mean time the driveshaft loop and line-loc have been installed. I got my converter back yesterday from being re-stalled and its going in this weekend. Also will be getting the goodyear drag radials mounted that have been on the shelf for a number of years..

Getting closer to making a full boost pass..

I thought you already had your intake manifold made & are using it?
Two pieces made out of stainless?
That was your turbo header manifold.
MBHD

I've been using the turbo exhaust manifold...

Yea !

My intake is shipping tomorrow!

Quick update...

The intake is installed, charge air pipe hooked up - I'm going to have to redo them though hard to believe that I would have hood clearance issues. Had to "clearance" the tubing to get the hood shut, and its not pretty.

Monday is chassis dyno day... going to shoot for 15-18# on 94 octane, then next Friday if the weather is good - going to let it rip at the track. Have a slew of tiny things to finish before heading to the track.

Need pics!!


MBHD

and video! with sound. tom

I'll try for some video later today....

Did you make it to the dyno?

Hope it did well.

I did... when the boost hits the LF tire to fender lip separates about 5" (this is with the truck tied down to the dyno anchors)..... max boost was 11.5 PSI, we maxed the 46# injectors out...


going to the track Friday... I'll post more then..

Ummm, 46# X6, or X12?

Not that 276 Lbs of fuel is anything to sneeze at.

Twisting 'er up on the dyno, that should be an 'interesting' pass at the strip.

Keep it rubber side down & between the guardrails.

6x

Still need pics, and video of the dyno run under boost.