Outer Limits 4x4 Board

OK I know this is the rover section but thought someone may know this.

I found this R&P ratio in the US for a hilux.

MWT354 TOYOTA 8" GEAR SET 3.54 $208.88

And I was thinking of it for my 110 county, which is only used as a touring vehicle on 33's but I want it to be bulletproof, and the torque and weight of the ISUZU isn't kind to the front diff.

So does anyone know anything about this R&P? What centre does it fit , high or low pinion, and is it available in Australia.

Ben, I think that 3.54 ring and pinion is a Jack McNamara one. I bought one a few years ago to put into the back of my portal axled rig but got put off it when Lockee reported premature wear on his McNamara 4.7:1 hilux ring and pinions. Does anyone else out there run 3.54 :1 JacMacs? and if so how many kilometers have you clocked up?
Bill.

No I don't think so Bill,

I posted a similar thread in the toyota section a while back and this was one of the (few) replies.

toyrex wrote:They are a Toyota item for the US only
there are 15 diferent ratios available for the Hilux from 3.07 through 6.8
and at one stage I have had every one of them
If you want one you will have to get the complete carrier as the gear set will not fit the 3.72 through 4.556 carrier

Adrian

So it seems they are a special US ratio - and this is supported by the fact that all the us diff places list this ratio for toyoty 8". Doesn't the Jacmac 3.54 use the 3.72-4.556 carrier??? If so it must be a special one like the 4.7:1

Yes Ben I think you are correct. they are designed for the standard Lux carriers. How do you plan on clearing the 110 trackrod with the lower pinion of the Lux diff?

That is the only problem, I am trying to find out if there is a high pinion version available. Since clearance isn't as much of an issue on the 110 (mainly a touring vehicle) I could build a bent track rod like the one-ton (salisbury) 110's had.

The current 4cyl toyota tacoma (US hilux) 4x2 has a 3.58:1 ring and pinion that should be 8", but precision gear and other sites list a 3.54 also. Looks like no high pinion though.

If I could get a 3.54 Hilux ring and pinion that is known to be reliable I would build up a rear diff, although running it upside down may create oil starvation problems.It doesn't on the Rover diff however,
Bill.

I will let you know Bill before I buy anything to see if you are interested in a set as well. So far they seem to be pretty uncommon so the hardest part may be finding the appropriate centre to run them.

Thanks Ben, I haven't broken a Rangey diff with the portals yet, and I would like to think that the portal gears are stronger than the ring and pinion but until something lets go I wont know.
Bill.

Ok so still no definite answers but maybe this is an aftermarket only R&P that is manufactured by Precision Gear in the US - who have a very good reputation for making quality R&P's.

http://www.precisiongear.com/toy8.htm

In the toyota 8" 4cyl section.

And here - which states that it is a precision gear:

http://www.drivetrainspecialists.co...ts.php?catid=37

And here - but not specifically listed as a precision gear (and cheapest price).

http://www.drivetrain.com/ToyotaRingPinion.html

So does anyone know where Mcnamara's 4.7 and 3.54 hilux ratios are manufactured??? All the reports of work out Mcnamara hilux R&P's refer to the 4.7 - so is the 3.54 the same??? It is possible that Precision make the 3.54 and someone else makes the 4.7, so there may be a big quality difference.

Anyone know what is stamped on Macnamara hypoid (hilux) 3.54:1 ring and pinions??? Is it anything like:

AN.ENG.11x39. 3.54

Very close Ben, Its AM ENG 11 x39 3.54 followed by something that looks like a large dot and two half moon shapes.
Bill.

daddylonglegs wrote:Very close Ben, Its AM ENG 11 x39 3.54 followed by something that looks like a large dot and two half moon shapes.
Bill.

So Bill, is the manufacturer for the Mcnamara 4.7's the same????

Ben,I believe all J Macs Hilux ring and pinions are from the same manufacturer. Maserati in Italy think .
Bill.

daddylonglegs wrote:Ben,I believe all J Macs Hilux ring and pinions are from the same manufacturer. Maserati in Italy think .
Bill.

I don't see how if they are stamped "AM ENG". For a start engineer is spelt starting with an "I" in italian.

Maybe the Precision Gear 3.54 hilux ring and pinions are a lot better quality, but it would be good to get some firsthand experience before forking over $200US for one.