SRT Engineers Roundtable: 01/26/11

[n102win]

What do you think of installing a 5.7 police package oil cooler on the 6.1?

[SRTEngineers]

What is the best time you guys have gotten out of a non street legal tune with the 6.4.

The irony is that we only test street legal tunes on our tracks. In truth, we go to the tracks to test our production tunes/chassis for track durability to ensure when you go on the track, there are no surprises.

[SRTEngineers]

No special software here - just doing it the hard way

Is there any way to estimate the effects on effective spring rate of the Sachs Nivomat shocks in the rear? I know, tough question!

Thank you very much for the info!

I will have to get back with you on this one.

[SRTEngineers]

Is there a reason SRT doesn't go to a tire that's wider than a 255 in the rear from the factory for L-series cars?

It's always a struggle for design office to use a smaller, fuel efficient tire on the base car, and nice big, wide performance tires on the SRTs while using a common wheel house and make both look awesome.

Now that Ralph Gilles is the head honcho over there in Design Office, and in charge of the Dodge Brand, maybe he can put his magic touch on some new patentable solution! Go Ralph!!!!

[SRTEngineers]

Can the new 6.4 heads be used on a 6.1 block? How do they compare to the 6.1 and eagle heads?

Thanks again everyone for taking your time to come on and do this again!!

We started a pretty great racing series, how about you guys put together a car and come out an get beat up on by your customers!!

The heads will screw on but there's differences for chamber volume and valve heights so they are not an easy switch. The new heads flow more but I don't have the numbers.

[SRTEngineers]

What does the new 6.4 fuel pump flow

200 L/hr

[Cam]

Really? I'd love to see that data!

WOW! so is someone blowing smoke? Was there any change in the engine in 2009 or any other year for that matter? or is a 2010 6.1 exactly the same spec as a 2006 6.1??

Mclarengts/SRT. The question was posted a couple chat sessions ago, but was not geared towards boost. It was a simple question regarding ring end gap specifications which the engineers provded the answer to my question. Yes they had been revised.

[SRTEngineers]

Did you guys get a chance to throw some drag radials on a 392 and run it by any chance?

Yes we tried the new Nitto 275/40s. The F1s (stock) were quicker than the Nittos - no lie. We were launching the manual at 4500rpm with medium clutch release. It may have something to do with overall driveline changing with change in tire RPM.

[SRTEngineers]

What do you think of installing a 5.7 police package oil cooler on the 6.1?

During the development of the 6.1L Engine we did evalaute the need for an engine oil cooler. Our testing resulted that we did not need the oil cooler. We did find that going to the 392 that it was required.

[InferAl]

During the development of the 6.1L Engine we did evalaute the need for an engine oil cooler. Our testing resulted that we did not need the oil cooler. We did find that going to the 392 that it was required.

Is it the same one as the 5.7oil cooler

[FlyByU]

Is there any wheel hop in the new 392 6 speed challenger?

[SRTEngineers]

That's it for us! Thanks for your continued support and comments!

Have a good night!

[FlyByU]

lol, alrighty then.

[Kowalski Supersoul]

At what RPM does the valve in the intake manifold activate to change runners?

[DMAG]

We really appreciate the time you guys have taken from your busy schedules to hang out with us and answer our questions!

THANK YOU!

Until, next time! You guys rock!