New DR's, 6262, trans, 9.5" nlu, SLIC, ALKY= 12.293@111.05

[Turbo Negro]

Test & tune 2/14/14 with David Husek and Shev.

I had the alternator rebuilt. Changed it out and turned the boost back down to a measurable level right around 30lbs.

The first pass of the night, I was able to launch pretty hard, got a 1.53 short time and ran 11.2. This is my best 60ft yet!

Made 2 passes after that @ 11.3, and spun all the way to a 12.3 in between. All the mph's were 117-118.

I was set to turn it back up a couple lbs, and try to better the night's ET, but we saw some oil under the car. Turns out some trans fluid puked out the vent, so I decided to call it a night.

 

[Lil Truck]

Did you get some PL logs?

 

[Turbo Negro]

The best 2 logs I have, with comparable tunes & the 2 different converters are my 11.44 (8/31/13) & 11.30 (2/14/14). Here they are.

 

[Lil Truck]

The logs look good, you can see the difference in rpm drop with the higher shift points. Dusty told me to get my shift rpm up to 5300-5400 and it made the same difference you have in these logs.
With your boost @ 30+ your injector duty cycle looks correct to me.

 

[Turbo Negro]

Thanks. Everything seems to be working well. The car, in my opinion, is good for solid low 11 sec passes at this point. Trying to tune much more beyond that, I found it to get border line.

 

[bttwracing86T]

whats your opinion on daves converter and transmission, honestly. I talked to him and he wants me to go with identical to what you have converter and all. just want someones honest opinion that has the same thing I am getting. pm me please about it

 

[V6POWER]

Alky is set on 7. Seems to be enough, because the car is running clean (no knock).

I'm going to write up a comparison in the trans talk section as soon as I get a little more time with it.

Any idea when you will have enough data to do the comparison?

 

[Turbo Negro]

In a nutshell I can tell you that both converters have their merits. The PTC couples up and makes mile-per-hour. The Husek 3021 is a little looser and gets the car moving with plenty of torque multiplication.

Nothing wrong with either one, just different. For my current set-up, the 3021 feels better on the street, is quicker in the 1/8th at the track & has netted my best 1/4 et so far (with more boost but less mph).

 

[V6POWER]

Can you provide % tc slip for each tc? Thanks.
http://www.wallaceracing.com/converter-slip.php

 

[V6POWER]

Also, at what rpm does each tc shift 1-2 and 2-3? How much rpm drop on each shift?

 

[V6POWER]

Turbo Negro--Any feedback on my above two posts? I am considering one of these tc's, but I need more info from a real time user. Thanks.

 

[Turbo Negro]

Sorry to have not replied sooner.

Do you have a Power Logger? If so, you can check out the logs posted above.

I was able to raise my 1-2 & 2-3 shift points from around 4900 to 5300 by switching converters. Both netted about a 500-600 rpm drop.

As a result, the Husek converter had better 1/8th mi and 1/4 mi ET's. This converter also works well for me on the street.

When pushed a little harder, I did get my highest mph through the 1/4 mi traps using the PTC, but my car was still quicker with the 3021.

Hope this helps.

 

[Dusty Bradford]

This is a good example of why I try to match the operating range of the engine to the converter. In your case, the less efficient converter is allowing the engine to stay in a higher rpm range. Although it has more slip and less mph the engines average power throughout the run is helping et. The 0% slip number you had with the PTC indicated the converter was to tight. It needs to have some slip in order to multiply torque. It's a good example of why we don't get hung up on slip numbers.


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[V6POWER]

Thank you for the real world feedback Turbo Negro. I run FAST XFI, no Power Logger. Is the 3021 a l/u or non-l/u?

 

[psycho6cyl]

With these sub 11.5 times is your caged? What track you guys run at? Island atco raceway?

 

[V6POWER]

When pushed a little harder, I did get my highest mph through the 1/4 mi traps using the PTC, but my car was still quicker with the 3021.

What was your mph gain from the 1/8 mile to the 1/4 mile mph with the 3021? Thanks.

 

[Turbo Negro]

Nlu, no cage, picked up 22.8mph @ pbir.

 

[OhioC5]

Do you remember your idc at 24lbs of boost?

 

[Turbo Negro]

Not sure what the IDC was at 24lbs. I looked back at a few logs in the 11.7-8 et range and it looks like it was in the low 70's at that power level. My voltage was low at that time (12.8-13), as my alternator was on its way out.

After replacing the alternator voltage is back up to 13-13.5, and low 11et's with 10.8 AFR, the IDC is around 85%

 

[626gn]

Sorry to have not replied sooner.

Do you have a Power Logger? If so, you can check out the logs posted above.

I was able to raise my 1-2 & 2-3 shift points from around 4900 to 5300 by switching converters. Both netted about a 500-600 rpm drop.

As a result, the Husek converter had better 1/8th mi and 1/4 mi ET's. This converter also works well for me on the street.

When pushed a little harder, I did get my highest mph through the 1/4 mi traps using the PTC, but my car was still quicker with the 3021.

Hope this helps.

Just curious, what's your brake stall now at #0 with the new Husek converter?