Lucky 8's Project P38

**benji** · 14th September 2013, 08:19 PM

I was driving a defender up Licola way and dissengaged the rear arb locker to late, thought I'd broken something.

A torsen type diff will only ever want to equalise the torque between the two wheels, not the rotational speed. They do however need torque applied to both axle sides, and the more torque differentiation that occurs the more they lock which is why they amplify the effectiveness of traction control. However, if a wheel is in the air no torque can be transfered on that side, but again, the traction control transfers that torque.

There's a few good articles on wikipedia.

**Keithy P38** · 14th September 2013, 10:22 PM

Peter,

I've noticed that when cold (and I'm talking 'just started up for the day and there's a nice washed out hill I need to climb' cold) that it'll give a little click upon disengaging, but provided you are not under a good load it'll disengage no worries with no noises, and is never noisy when the diff is warm.

**RR P38** · 15th September 2013, 07:03 AM

What is the installation process with the ATB.
Do you need to do any mods on the diff?
Reset the backlash etc?

**ozscott** · 15th September 2013, 03:51 PM

What a great write up!

5SPDDisco I assume you have used a full locker before in your travels. Can you give us some more info on how the Ashcroft ATB performs in concerto with Electronic Traction Control, in comparison to a fully locked differential, especially at the extremes of wheel articulation.

Many thanks.

Cheers

**FiveSPDDisco** · 16th September 2013, 12:20 PM

Originally Posted by RR P38

What is the installation process with the ATB.
Do you need to do any mods on the diff?
Reset the backlash etc?

Just the spacer ring and a normal carrier instal that involves the backlash reset.

**FiveSPDDisco** · 16th September 2013, 12:24 PM

Originally Posted by ozscott

What a great write up!

Thank you for the kind words.

Originally Posted by ozscott

What a great write up!

5SPDDisco I assume you have used a full locker before in your travels. Can you give us some more info on how the Ashcroft ATB performs in concerto with Electronic Traction Control, in comparison to a fully locked differential, especially at the extremes of wheel articulation.

Many thanks.

There is no substitute for a true locker. That being said the Ashcroft ATB is pretty close when combined with the second-generation P38 traction control.

**FiveSPDDisco** · 16th September 2013, 12:25 PM

Project update : Snorkel V2.2

I think we are getting very close to a final product. I'm sure your opinions do not need any solicitation so let me have them.

I want to lower the intake head so it is flush with the roof line.

With the top lowered I think it will blend into the truck nicely.

**benji** · 16th September 2013, 12:40 PM

That looks awesome. Apologies to the others who have snorkels, but that is the best one I've seen.

Can you see it from your passenger seat?

How is it routed internally, ie, could it work with the eas still there?

Thanks for all the work you have put in.

**FiveSPDDisco** · 16th September 2013, 12:48 PM

Originally Posted by benji

That looks awesome. Apologies to the others who have snorkels, but that is the best one I've seen.

That is unbelievably kind of you. Thank you very much

Originally Posted by benji

Can you see it from your passenger seat?
.

I don't think so. But I'll look tomorrow. Why?

Originally Posted by benji

How is it routed internally, ie, could it work with the eas still there?

Thanks for all the work you have put in.

It is design to work with EAS. I needed to get the pipe finished before we did the stuff on the inside.

**Pete38** · 16th September 2013, 12:50 PM

Originally Posted by benji

That looks awesome. Apologies to the others who have snorkels, but that is the best one I've seen.

Can you see it from your passenger seat?

How is it routed internally, ie, could it work with the eas still there?

Thanks for all the work you have put in.

I second that. Looks great. Funny part was a guy on the weekend was saying to route it very similar to that... But thought it wasn't gonna be easy. But gee that's much tidier than I envisioned.

Thanks for the initiative and doing the hard work. Would be very keen to buy a snorkel along with your great ideas from you guys once done.. Assuming shipping ain't a problem.

Thread: Lucky 8's Project P38

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