disappointing run with radix 112

[quicksilverado]

The rpm is not off. Look at the hp and tq scales on opposite sides off the graph. They are scaled different. That is what makes it look like it is off.

[HuskerBlood]

The rpm is not off. Look at the hp and tq scales on opposite sides off the graph. They are scaled different. That is what makes it look like it is off.

Does this explain the big difference between TQ and HP then? I know the SC is designed for low end, but the magnuson chart shows them being a lot closer together.http://www.magnacharger.com/images/d..._silverado.jpg

[IXLR8]

the curves are crossing at 4200 rpm. the scaling of hp and tq is irrelevant. i think the dyno itself may need some calibrating. try it on a different dyno and see what it reads. i am surprised no one caught this at the shop. Where was it dyno'd?

The scaling on the chart DOES matter. If the the torque and horsepower are not scaled the same, the lines will not cross at 5252 rpm. However, the torque and horsepower numbers should still be the same at 5252. The chart may not make it look like they are due to the difference in the way the hp and tq are displayed.

On that chart it's somewhat difficult to compare the torque and horsepower numbers. But they appear to be roughly the same at 5252 rpms.

[farmtruc]

The 112 is prone to overheating, how much boost is that charger putting out?
If your truck made 220 stock, which is kind of low, and the charger is at 5psi and it's hot out, this is typical.
If not cool down time was allowed, some of the timing was probably being pulled.

Thanks for considering us, if you do come down, we'll do our best to make sure you're happy with the results.

good luck,
allen

[HuskerBlood]

Not sure what it made stock but that seems right. It would be cool if they could get that spacer to work. If my math is right on the IMAP data it is pushing upper 6psi at WOT, not sure how accurate that is. I will be seeing you as soon as I get my efans and truetrac on. Might go all out and clean up my internals, what cam has worked on these blowers...probably going to say get it specd pushrods, springs, rockers, wheels, tires, FLT, grill, rollpan, level kit.....girlfriend hits a deer 6.0L turbo...etc.

[AKlowriderZ71]

what cam has worked on these blowers

My combo has been working well for me. Cam specs are in my sig. Vid of a 12.3 pass is posted in the drag racing section.

[cjriojas]

The scaling on the chart DOES matter. If the the torque and horsepower are not scaled the same, the lines will not cross at 5252 rpm. However, the torque and horsepower numbers should still be the same at 5252. The chart may not make it look like they are due to the difference in the way the hp and tq are displayed.

On that chart it's somewhat difficult to compare the torque and horsepower numbers. But they appear to be roughly the same at 5252 rpms.

you're right, the scaling is relevant. The scaling is a calibration thing though. i wouldnt trust it until it gets set right.

to the OP, the best dyno is the quarter mile.

[IXLR8]

you're right, the scaling is relevant. The scaling is a calibration thing though. i wouldnt trust it until it gets set right.

to the OP, the best dyno is the quarter mile.

I doubt the way the chart is scaled has anything to do with how the dyno is calibrated. It's most likely just they way the dyno operator chose to display the chart (which kinda sucks in this case).

[cjriojas]

The rpm is not off. Look at the hp and tq scales on opposite sides off the graph. They are scaled different. That is what makes it look like it is off.

the curves are crossing at 4200 rpm. the scaling of hp and tq is irrelevant. i think the dyno itself may need some calibrating. try it on a different dyno and see what it reads. i am surprised no one caught this at the shop. Where was it dyno'd?

[HuskerBlood]

Little shop here in Oklahoma City called Abel racing, they do mostly imports but I figured I would give it a shot. They have 2 dyno pulls with wideband for $40 on wednesday nights. I might go back and ask about it, maybe put it on the dyno again.