Driving in 2WD mode?

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Driving in 2WD mode?

Postby ChrisD » Mon Jul 06, 2009 8:45 pm

Hey guys,

I know this has been discussed before at length, but my memory is failing me.

How far, and at what speeds are generally considered "safe" for driving in 2WD mode on our drivetrains? Or, is it generally considered NOT SAFE to ever drive in 2WD mode?

I have some dyno time coming up and it would be easiest if I had that set up prior to arriving at the tuner's...however I could be convinced to have it towed in.

Anyone have experience with this?

:)
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Postby ChrisD » Mon Jul 06, 2009 8:54 pm

just did some searching....looks like it's not safe to drive on at all. Please feel to comment tho.

:)
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Postby azian_advanced » Mon Jul 06, 2009 9:02 pm

how do you drive in 2wd mode? isn't it fulltime 4wd?
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Postby CMS-GT4 » Mon Jul 06, 2009 9:21 pm

Do not drive in 2wd mode at all. I think it even says that in the BGB.
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Postby cmonteiro1 » Mon Jul 06, 2009 9:23 pm

Just have them throw it up on the lift and throw it in 2wd mode. It will only take a few minutes.

Why aren't you dynoing in 4wd? I had to do 2wd bc of some some issues with the 4wd dyno, but I def. would have rather been able to do it in all 4
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Postby CMS-GT4 » Mon Jul 06, 2009 9:53 pm

BTW: Is this your 205 you are going to dyno? I thought the 205 lost the drive selector lever?
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Postby ChrisD » Mon Jul 06, 2009 10:44 pm

No this is the 165. :) I am getting the Power FC properly mapped b/c I am not satisfied with my street tune. It's really tough to do right without a controlled environment.

4wd dyno would be better yes, however more important is the tuner. And he only has 2WD dynos. I did dyno on a 4WD Mustang dyno a long time back, but that was just a one run WOT deal. Managed 236whp at the time.
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Postby LegacyofDan » Mon Jul 06, 2009 11:15 pm

azian_advanced wrote:how do you drive in 2wd mode? isn't it fulltime 4wd?


like cms said, just dont drive in 2wd.

it is fulltime 4wd, but there is a selector on the trans axle that will allow you to change that, please read the BGB before messing with it. please.
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Postby CMS-GT4 » Tue Jul 07, 2009 1:34 am

I think griffin made a detailed post on what to do to dyno in 2wd mod. It might be in the faq, but it is a good read.
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Postby esracing » Tue Jul 07, 2009 12:55 pm

funny thing i just taked to my instuctor at toyota school about this and he said yes you can drive it in 2wd mode just dont do it all the time . i have tryed this my self
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Postby ChrisD » Tue Jul 07, 2009 2:23 pm

CMS-GT4 wrote:I think griffin made a detailed post on what to do to dyno in 2wd mod. It might be in the faq, but it is a good read.


That rings a bell. Will go searching. :)

I think I'll be getting it towed in.
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Postby ChrisD » Tue Jul 07, 2009 4:05 pm

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Postby tissimo » Tue Jul 07, 2009 5:22 pm

I wouldn't even dyno in 2wd mode personally. The spider gears in the center diff are working overtime.
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Postby ChrisD » Wed Jul 22, 2009 4:04 pm

Dyno done, was a success. Ended up just driving to the shop and switching it when I got there. 4 hours of tuning...well significantly less time than that actually spinning. Everything held up great, no issues whatsoever.

Key things, did the pulls in 3rd gear, used 1st and 2nd sparingly. Never put it in reverse as this is explicitly stated not to in the BGB.

FWIW, I use Redline MT90 fluid.

So there you have it. I honestly wouldn't be concerned, especially if you're producing modest power levels.
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Postby 88st165 » Wed Jul 22, 2009 4:41 pm

So what did you make before and after the tune?
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