RTz

May 18, 2007

...and a Blaster II coil

Is this the internal HEI coil or an external conversion? Most internal HEI's wont 'do' much RPM.

I will bump up the A/F ratio next time out. Is 13.2-13.5 a good target?

Mixtures are dependent on many variables. I've seen a huge change in 'correct' mixtures with a simple swap in injector style. Its impossible to give you anything other than a guideline. In my experience, I often find 13.0 to 13.3 (NA) to be pretty close, BUT its not always a truism, and further, I find what the engine likes can be RPM dependent, or at least, more *sensitive* to the ratios being 'correct' in one range vs another.

My point is that the way to find this is on a dyno.

A distant second is very careful, methodical use of data-logging. External variables are more difficult to control with data-logging, but I've had good results in the past. The premiss is to overlay the RPM graphs and compare the rate of change of RPM's. Assuming no wheel spin, consistent road gradient, etc, etc, you'll know if the engine liked the change and what RPM it improved the power. You can do sweeps, shifting the entire map, richer or leaner, and compare the RPM plots. Disseminate, and try again. Its laborious and inefficient... better bet is the dyno.

May 18, 2007

Definately the larger port size for me. It would make no sense to go with the smaller port in my case because I'm looking for more flow and HP gains.

Agreed. The N42 manifold runner size is only 53% of the intake valve (stock L28). There will be gains realized with a larger runner. At 1.5" ID, you bring that number up to about 74% of valve size.

May 18, 2007

I have to talk to Ron about machine the flanges he designed. We'll get something worked out.

Justin is referring to this flange...

Its an old picture, prior to buffing out the tooling marks. For more recent pictures, different views, and the intended use, click.. http://forums.hybridz.org/showthread.php?t=117607

The one thing about Ron's head flange is its designed for oversized port diameters.

Justin is right, and they're raised a bit as well. The flange is currently sized at 1.753" OD. There is some amount of latitude in runner ID with alternate wall thickness tubing. With the runner height as-is, anything smaller than 1.5" ID will put the floor of the runner above the floor of the port.

To some extent, some of these variables could be manipulated, beforehand.

Justin and I will continue our plot to build a few. Until then, keep us posted on what you guy's want.

May 18, 2007

I started this post to help the L6 guys out by running flowtest and bouncing ideas back and forth to try and come up with the best flow tested design possible. Keep it coming guys and I'll keep running flow test.

TBS,

Care to test mine?... http://forums.hybridz.org/showthread.php?t=117607

I'll provide you with DXF's if you want to have a go at it.

May 17, 2007

In my opinion, the most prudent thing to do is to take it to a dyno shop and tune, tune, tune.

12.6 AFR's might be a little on the fat side for an NA motor. Dyno will tell you what the motor likes, including ignition timing. If nothing else is gained, at least you'll have solid ground with which to assess future changes.

You might be getting ignition drop-out... what ignition system are you using?

May 17, 2007

-fuel air spark technology F.A.S.T.

-nemesis

-big stuff

Added those to the listing.

-weber/redline has one

This is ECU 882.

May 16, 2007

Is that a 5"?

Yup.

May 16, 2007

Autometer Sport-Comp and Pro-Comp should both 'fit'....

May 16, 2007

Tim,

Where were the EGT sensors located?

May 16, 2007

ya my gf has the same prob haha

Define "problem"?

LOL

May 15, 2007

Hey Ron, how are things coming with your scratch-built car project?

Max,

That specific 'car' has been shelved. It never made it any farther than these pictures...

.

Oldest grandson (about 5'-10" in this picture)...

I came around to the fact that the SHO drivetrain was too compromising for my goals.

The front end now hangs... um... gracefully, from the shop trusses as a conversation piece. I suspect it will spend many more years there

The idea of a clean sheet design has been banging around in my head pretty strongly for the last six months or so... time will tell.

May 12, 2007

Fulfilling requests for more info on the EMS system...

Glovebox mounted Wolf3D (V4) provides the engine management, driving the coils through a J&S Safeguard. The Safeguard uses 'smart knock' technology to hold each cylinder below knock threshold, delivering a quasi-custom timing map on a cylinder-to-cylinder basis.

Denso ignition system...

.

CAS sensor, pried from a Z32, and adapted to fit the L6....

May 11, 2007

check out http://www.Dpcars.net and the Dp1 project.

...Been following Dennis since the beginning. Spent a couple hours at his place about a year ago. You couldn't ask for a nicer guy... and seriously talented to boot.

A couple more interesting reads and great people...

http://www.grabercars.com/Mambosite/index.php

http://www.kimini.com/

May 11, 2007

We're about 30 min. from Vancouver.

If you need a place to stay while 'hunting' let us know.

May 11, 2007

Did she beat Hans Stuck? He one of my all time favorite drivers.

Stuck won in 1970, 1998, and 2004

Sabine won in '96 and '97

I couldn't confirm (or deny) whether or not they raced simultaneously.

Sabine is now 'retired' and hosts her own TV show, taking oddball challanges, ala the first two vids. She is also known as "The Fastest Taxi Driver in the World"... driving you around the Ring in the back seat of an M5. My favorite, however, is her 'owning' Jeremy Clarkson.... in a Ford transit van.

Here's a terrific video of the 'race'...

http://youtube.com/watch?v=ZI_oLLqW1BE

Check out this amazing drive around "the ring" in an M3 GTR.

http://www.youtube.com/watch?v=1q8ZNkhxT04

Great Vid!

May 9, 2007

Picked up the manifold from Finish Line Coatings in Milwuakie this morning, Cerma-chromed...

.

Manifold is now mechanically finished. There are several revisions in the works for manifold #2. What's that saying?... Experience is that thing you receive immediately after you needed it.

The car is scheduled for a dyno session immediately following the All-Datsun Canby Meet... I'll post before/after results with a few more specifics.

May 9, 2007

May 9, 2007

It looked to me like the cart driver was really screwing around and took it pretty easy on her though.

In total, quite likely the other way 'round.... Sabine is a two time champ of the 24 Hours of NÃ¼rburgring (BMW M3) and 'crowned' "Queen of the Ring". Known primarily as the first woman to win a major 24hr race (and a bit of public thrashing on Jeremy Clarkson )