89 was a turning point for the AX15. my 89 had an AX15 as original equipment.

Transmission 1st 2nd 3rd 4th 5th Rev
AX-15 3.83 2.33 1.44 1.00 0.79 4.22

the t Case has 2.72 low.

i ran D30 my disconnect straight off manifold vacuum to engage it. now a use a vacuum switch out of an FSJ.

the 5 on 4.5 bolt pattern is fine for larger wheels.

 

But but but Jim !!!!

Jeeps have round headlights.

Dale

 

In reply to:

Jeeps have round headlights.

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I TOLD him that, but not to worry - he has an artistic bent. He said that he can hand paint round headlight rings on it.

Well, that would be a 32:1 crawl ratio - not good but not too terribly bad for what we do.

Axel swap should be a piece o' cake anyway.

We might have another Jeeper soon.

 

The easy way to tell the difference between the Peugot and Aisin trannys is to look underneath for the seam. The Peugot has one running lengthwise (clamshell), whereas the Aisin seam runs around it.

The hubs hold 31's just fine. 31's were on mine when I bought it and I've been running them for a couple years.

The vacuum disco is easily locked in the engaged position. Take of the cover on the housing and it will be pretty obvious.

 

But will "Toby"

have gold hucaps on it?

 

In reply to:

The easy way to tell the difference between the Peugot and Aisin trannys is to look underneath for the seam.

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Is the Aisin a better box than the Pooch-O?

In reply to:

But will "Toby" have gold hucaps on it?

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Don't know about the gold hubcaps, but it will probably have its share of bling. He's already said that it will look good in orange and black. Big problem is that it and the cart aren't both going to fit in the trailer.

And on the subject of the cart, last week he brought it over and we shortened the forward top supports by 6 inches. Now it has a Kool Kalifornia Rake to it.

 

Everyone with a peugeot tranny wishes it was an AX15.
About the D30:

vac to mech
D30 disco
vac shift mod
another vac to mech
just to be sure

 

Now that I think about it, that might have been an AX15. I've only looked at a Peugot once, and remember the aluminum case with all of the ribs. The box in this Jeep is like that, but I didn't notice the center seam.

Thanks!

 

Also, is it a 4 cyl or 6 cyl? If it is a 4, it will probably be an AX5, if it is a 6, it will be an AX15.

 

They put the peugot and aisian ax-15 behind the 1989 6 cylinders. Look at tegh intermediate plate that divides the tranny-is it rusted?-then it steh peugot-if its not-its the ax-15 (much better tranny). The inermediate plate on the peugot is steel...

ax-15 wilol hold up to pretty good abuse with 31 inch tires. Make sure you don't get any grinding through gears-but pay close attention to 3rd and 5th gears-the synchros tend to get worm a little easier for some reason-once they start to go-you have problems and the transmission can bind to the point where it sticks in gear.

The vacuum engagement is OK-if its working-great-if not-the switch fails, and/or lines leak. There are aftermarket cables that will provide a positive mechanical engage lever for the four wheel drive.

Check rear frame rails by the back wheel wells-and where the roll cage meets the floor behind the seats (rust)-along with the normal places.

Throw a autolite 2100 series (motorcraft 1.08 jets) and a hei distributor on-and you will be all set.

 

It's a 4.0. The unit has one of those trim packages - Sahara Edition, I think. But I'm not into trim packages.

Frank's already asking how much an axel swap would cost.

 

In reply to:

Throw a autolite 2100 series (motorcraft 1.08 jets) and a hei distributor on-and you will be all set.

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It's got FI

We're not going to mess with that.

I checked the usual places on the frame and tub for rust and found nothing significant, except that the windshield frame is rotted out.

 

Jim, If Frank is going to wheel with you and people like me, he isn't going to get into extreme situations. The D35 should hold up with 31" tires without the axel swap. If he's going to run lockers he might want to be looking for the axel. Tell him I'm glad he's still in the mood to buy a jeep.

 

He's never had a 4WD before, so he's not going to jump right into anything hairy. But if he gets as big a bang out of it as I think he will, we might be doing a drive train swap - not just axels but a better tranny and transfer case too. Is there a transfer case with a driver-side drop that can be put on a T18?

 

Must have been a swapped-in 4.0, as an 89 would have had a 258 stock with the fun carb system.

Rear Ford 8.8 is a good swap. Front 30 should hold up to 31s. If you want more strength go to the 95 axleshafts, with the 297 ujoints. 95 was the only year YJ made with the larger half-shafts in the front 30.

Dana 35 should hold up to 31s and mild trails. I wouldn't lock it up, nor would I bounce it too much. Call for the winch cable before you abuse it too much. 8.8s are cheap, though, and a good swap. Dana 44s are available from cherokees or 'metric ton package' comanchees, but they're pretty rare.

5 on 4.5 wheel bearing units are fine, and very easy to replace should one die. Not cheap though, at $100+ new each.

4.10s came stock in 4 cyl. YJs, so a swap to a 4.10 rear 8.8 (8.8 can be had with 4.10 gears), swap to a 4.10 front dana 30 with 95 half-shafts, you could throw on some 33s and a suspension lift and you'll have a nice basis for a trail rig with the 4.0.

Watch out for year changes on the front 30 though. 87-90 had one style, 90+ had another style, and the calipers, rotors, and I think the wheel bearing units are different. I ran into that putting a 90 4 cyl. 4.10 dana 30 into my 88.

Good luck
Pete

 

In reply to:

Must have been a swapped-in 4.0, as an 89 would have had a 258 stock with the fun carb system.

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It sure doesn't look swapped it. I could well be wrong on the year; I guessed that from the tail light lenses. The tag on the back says "4.0", and with 3.07 axels I'm sure it wasn't a swap - surely nobody would go to that much trouble to end up with a 30/35 axel combo.

If he gets it he will probably drive it until something breaks, and then we'll replace it with something stronger. There's a junkyard nearby that sells axels for $75. If he blows one we'll probably get a set with better ratios out of a Dodge pickup or something. Maybe narrow them, maybe not.

My main concern right now is the transfer case and transmission. Stronger stuff and a better crawl ratio would be nice.

 

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I guessed that from the tail light lenses. The tag on the back says "4.0",

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well the lens are used for a 4/5 year period before changes were made on them so that is not a good test.

With 4.0 L sticker on the back my guess would be a 91 or newer. Run the vin numbers and that will give you a year of man.

That new WILL have the AX15 tranny behind the 4.0. The sad part is it will also have the "C" clip rear axle. The 87-90 had the much better rear axle, the NON "C" clip style. They were all called the 35C but that did not denote a C clip style axle.

I'v been running 30/35 with 4.56 gearing and 33x12.50 tires for years on my 87 with no issues. Like was stated just keep a cool head and light foot on the skinny pedal when wheeling. Finess it through instead of bulling it through

 

OK, the whole 4.0 decal makes a big difference. Now you've got a better tranny, a stock injected 4.0, and you're past the year change on the front dana 30.

But it probably isn't an 89. More like 91+

You is good to go.

Only issue now is depending on year, you could have an internal slave cylinder on the clutch, and that is not liked by some.

Good luck,
Pete

 

In reply to:

you could have an internal slave cylinder on the clutch,

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Yep. It does. Hose goes in, and a tube with a bleeder nipple comes back out.

But I reckon that could be changed too, if one really wanted to.

And the axel is no sweat. I know how to change them. People do put full-width axels under YJs, don't they? Leave about half the tire sticking out, but that's no biggie either.

 

You go Frank. Now he'll need his own Toby or a good looking Jeep B!tch to travel with ya!

 

In reply to:

You go Frank. Now he'll need his own Toby or a good looking Jeep B!tch to travel with ya!

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Should I ask about this??? Guess I don't need to know.

Dale

But hey Frank, I can always make hot wings.

Dale

 

That setup is one of the best. 4.0, AX15, NP231. That internal slave cilinder will work fine. Only problem is when it gets leaky, but because it's inside, less chance to destroy it on the trail. D35 is infamous because it's weak, but the Ford
8.8 swap is about a 1000 times described . A frontaxle with other gears also is no problem.

 

And some tranny info:
AX15
BA10