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Gazzar

Ashcroft high(er) high ratio transfer box.

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I've bought one of these for my tdi200 lwb.

So, here are a few comparison photos of the modified transfer box.

The thing they did was to move the intermediate shaft and cut a new gear set with a different ratio on the high gear, to give a ratio similar to the fairey overdrive.

 

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The intermediate shaft.

It has to be retained, but the retainer stud home ended up in the wrong place.

So they moved it.

Suppose it works, but I'll be using sealant on that for sure.

IMG_20190622_203050.jpg

IMG_20190622_203054.jpg

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Thanks, that's the first detailed pics I've seen of it.

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Thought it was worthwhile.

I'll do same for the gear set, when I've got to that part of my gearbox build.

It's a second hand box, v and I found this curious arrangement at the breather.

A bit of nylon pipe, siliconed in.

I've no idea why.

IMG_20190622_202926.jpg

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1 hour ago, Gazzar said:

Thought it was worthwhile.

I'll do same for the gear set, when I've got to that part of my gearbox build.

It's a second hand box, v and I found this curious arrangement at the breather.

A bit of nylon pipe, siliconed in.

I've no idea why.

IMG_20190622_202926.jpg

Probably to stop it being blocked buy sealant. 

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I was thinking of getting this done to mine. What’s your thoughts on the quality of the work? Looking at the photos I’m a bit undecided.

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9 hours ago, Maverik said:

Probably to stop it being blocked buy sealant. 

Yes, that makes sense. I've always used gaskets, so never thought of that.

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8 hours ago, Bigj66 said:

I was thinking of getting this done to mine. What’s your thoughts on the quality of the work? Looking at the photos I’m a bit undecided.

If it was a new casting, I'd say, poor, but adequate. But it's reworking an old box, so I'd say adequate, but not tidy. I think I'll take another look at that surface in the first photo, it might be deceptive.

If the shaft is in the right place, and the thrust washers have enough to perch on, and doesn't leak, it's fine.

What is apparent is that the series 3 box has a heavier construction, thicker ribs in lots of places, so if I was getting a box done, I'd start there.

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The load on the intermediate shaft is on the front - S1's had a shaft that was the diameter of the small front bearing for all its length and bearings to match and its common to find that a groove has worn in the front end and the front bearing has worn out.  the back one is usually OK as is the shaft at that end.

In the middle of the S2 run LR enlarged most of the shaft and fitted bigger bearings - which cured the problem.

So the proximity of the securing bolt hole to the back bearing shouldn't be a problem.

 

 

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