Rovers North High Ratio Transfer

[73series88]

whoooo!
glad we got that worked out.
aaron

[jumpmaster54]

Thanks Man

OK thanks, thats all I was trying to verify. I have it hooked up to a normnal transfer and want to install the HR transfer and keep the winch. Awesome.

Stan

[leafsprung]

if it works with your current transfer case it will work with the HR case unless its an overdrive.

[jumpmaster54]

Pics

OK well I'll post a few photos and then need help so I dont make a costly mistake.

Stan

[leafsprung]

I think he means the forward facing rear PTO as used on PTO koenig winches. Most front PTO winches are driven from the back of the transfer case, the exceptions being the turner, koenig crank driven and capstans.

[Lord Icon]

why not?

The front pto comes from the drive dog on the crank pully . It should have nothing to do with the trans .

[leafsprung]

yes

[jumpmaster54]

front pto

But can I use the fron PTO for the winch?

Stan

[Les Parker]

PTO for High Ratio

Stan,

Yes, with the high ratio t. box on your standard Series gearbox and you will be able to use the Rear PTO.

Thanks, Ike for posting the various pix for the different options for the rear out put gear.

[Cutter]

So with my NADA 109 IIA with the 2.6 petrol can I use the Rovers North High Ratio Transfer and my Koenig period front winch together?

Alot of info given and a few comflicting? Please advise before i spent alot of money and find out it does not work. Thanks

Stan

The NADA 2.6 head is setup for highway driving, so it has more power up high. The Euro has the power more in the lower range, so the HR Transfer is a better fit. Not sure if it is worth it, I also live at sea level in a pretty flat area, so like Terriann was saying, if you are in a hilly area it might be asking a lot of the engine. I would say the 2.6 is still underpowered for a 109, regardless of transfer case.

[73series88]

im not sure about the 2.6 in a 109.
ive got a 2.25 in an 88.
i was told i could put range rover diffs in my axles.
and it would but the equivelent to having an over drive permanately engaged. well i eventually got a fairey od and ive left it engaged and thought there was something wrong with the truck. no power. duh!!!!!

bigger truck bigger motor might equal same power loss in perminate high gear.

i use my od as a fifth gear basically and its great.
maybe im just talking out my ass.
aaron

[jumpmaster54]

Final Summary

So with my NADA 109 IIA with the 2.6 petrol can I use the Rovers North High Ratio Transfer and my Koenig period front winch together?

Alot of info given and a few comflicting? Please advise before i spent alot of money and find out it does not work. Thanks

Stan

[greenmeanie]

With a 3.5 V8 I'd be very surprised if you were not happy with an Ashcroft high ratio transfercase conversion.

Fireman has a Stage 1 with a LT95 which has the advantage of strength and a wide range of ratios available for conversion. .9962 is the highest ratio

[TeriAnn]

Not for nothing.... everything Teri Ann said plus the H/R gear set will be quieter I swapped transfer gears to a higher set. I am VERY HAPPY with the quieter gear set - but I have a freshly rebuilt 3.5 V8 with a slightly taller cam in it.

With a 3.5 V8 I'd be very surprised if you were not happy with an Ashcroft high ratio transfercase conversion.

Not knowing the weight of the 109 in question, were or how you drive I can only make a guess. Unless you live and drive on the flats near sea level and are OK with what would sympathetically be called gentle acceleration rates for a Series truck, I suggest a high ratio transfercase would not be the best of solutions for a 109.

The Euro six does have about 11 more lbft of torque and 20 additional HP than the 2.25L engine. It might be enough to make the difference, depending upon where you drive and how often you encounter mountains. It is iffy in my estimation but better than the 2.25L in a 109.

What you might do is temporarily pop in a pair of Disco I or RR Classic diffs from a wrecking yard and see how you feel about the driveability in high range. 3.54 diffs & a high ratio transfercase have close to the same overall fourth gear high range ratio. It is a cheapish way to find out if you can live with a high ratio kit without putting out the big bucks. When you are finished testing you can sell the coiler diffs.

If the coiler diff ratio works for you then a high ratio transfercase will work as well and you will get your low range back.

You will have to ask RN what brand they are selling. I would guess Ashcroft Transmissions but you never can be 100% sure unless you ask.

[leafsprung]

HR PTO

Les asked me to post a couple pics to help you guys out with your decision making process. The first one shows the stock output gear (small) the HR t-case gear (large) and the PTO clutch dog. The second shows the PTO clutch dog engaged with the splines on the HR tcase gear. For what its worth I run the HR tcase in three of my trucks (one with a PTO winch) and they are great solution to gearing.