Good info...keep us posted.

 

Subscribed!

Teach us!

 

ok, more info for you

one option is to use g452 transmission gears from Toyota Dyna truck

ratios: 5.15 2.74 1.93 1.00 0.83 5.04

just bolted all parts together today, all gears work and trans rotates smoothly.
it takes couple months before i can test drive it, axle and D300 swap isnt´t finished yet........

 

OH HELL yeah! :smokin:

 

Very interesting.

Two months ago an article in 4wd & Sport Utility mentioned AX-15 gears from a diesel application in 4.3, but didn't get more specific than that:

"The AX-15 transmission in front of the NV242 has gears from a diesel truck that give it a 4.3:1 first gear instead of the standard YJ 3.8:1. Phil changed to the AX-15 from the original Peugeot tranny to get rid of the problematic HydraClutch throwout bearing and use the later hydraulic slave cylinder."

Link to online article:
http://www.4wdandsportutility.com/features/jeep/0812_4wd_1987_jeep_yj_wrangler_laredo/index.html

 

There is a link that compares the yota trannys with jeep and dodge on here that explains everything.....cant find it right now...

Found it!

http://www.jeeps-offroad.com/showthread.php?t=4740

 

lucky bastards. would like a deeper 1st but 4:1 aint to bad doubler takes care of the rest and with the 4.0 and 5.13s should be real creepy.

 

marlincrawler sells 4.3 and 5.15 gears.

 

Yeah, Marlin sells the 5.15 gearsets, has for a long time. I have seen threads he's posted about applicability, there are some differences between early and late style AX15s, and I don't know that it'll work for the late style.

Frankly, I'm suprised its taken this long for someone to do this in the Jeep forum. I've been planning to try it, if I ever got back to an AX15 again.

 

So your saying, We can just buy the gear sets and install them from Marlin?! I will be calling first thing this Monday! Its about time there be stuff out there to upgrade these trannies!(I hope)

 

good info on this thread too:

http://www.pirate4x4.com/forum/showthread.php?t=714909

 

BUMP.....very interesting

 

shit! got side tracked at work. I will try to remember tomorrow.

 

I just got off the phone with a rep at Marlin. He claims they don't sell the gear sets any more. Haven't sold one in over 4 years. Also, He does not know where to get the gear sets. All sets are from Japan only as he claims. Thier transmission builders will not disclose any secrets of specs on anything as well.

He did say that the donor truck for the 5.15 set is called the "Hino Diesel truck" from Japan only. No domestic applications. I asked for a nomenclature of the tranny, and He did not know.

As for the 4.3 set, we all know what to look for. But the rep said good luck on that one as well.

Any one here rub shoulders with Marlin? Any one have a hookup in Japan?

 

I am sure we could track one of those trucks down some place??? That is to bad they will not help out on this great upgrade for the AX15. I will keep looking and see what I can figure out.

I did a search for the truck and it looks like they are delt with here in the good old USA.

http://www.hinotruckpart.com/

We need to know the exact transmission in order to figure out the parts.

 

im on hold with Marlin as we type

 

I tell you what, if we can get them from him I will drop my transmission this weekend and install them!

 

Call up right know and Talk to James. He's the contact to bug. Im calling that Hino truck place.

(559) 25-CRAWL

 

James called me back with some info. He was able to twist the techy's arm for info. The tranny we want is called a R452 and was behind the 5M turbo diesal engine. These where available in Australia, New Zealand, Japan.

Edit: just got off the phone with a US Hino parts dealer. Hopefully he can chime in and help.

 

Any luck yet?

 

Here is another site with some info:

http://board.marlincrawler.com/index.php?topic=5319.0

 

Great info there! Now if we can find a way to get the part listing and a supplier!

 

Just sit back and wait and continue research on our own till the Hino tech can get back with me. It might take 2-3 weeks for him to research and find what we need.

Google is our friend!

 

according marlin board: AX-15 input shaft wont work with R452 gears, AX-15 has 29 teeth and R452 26 teeth. but 4.3 geared r151f is same 29 teeth.

toyota input shaft is too short and have different splines for Jeep 4.0.

my 4.3 1st geared AX-15 still lie on table...... waiting for install.....

 

I found a site that sell the R151F parts. Scroll down to Toyota R150, R151

http://www.transtar1.com/catView.asp?ID=361&mainID=359&strIDS=359

Some where I read that these people can get or make the gears for the R151F.

http://www.osgiken.net/index.html

 

what about contacting a transmission shop to see if they can get the parts in? that seems like it would be an easy way to get a-hold of the necessary parts.

 

Well, Marlin did quote me about 1100 to build my tranny with the 4.3 first gear. And thats bringin in my transmission for the modification. They have the gear sets, they will not sell them individually.

As far as transmission shops go, you show me a shop that has knowledge on this subject and let me know. Im beginning to believe I am surrounded by Idiots this day and age. All they know how to do is BS you and steal your money.

I want a machine shop to build the bottom end of my 4.7 liter stroker with all the best parts for a turbo application. But I don't trust em. Just when they find out what they are building, they are likely to give me a stock rebuilt 4.0 and sell the parts under my nose!

Marlin is the only business I trust if I do go that route.

 

The tranny shops around here are jokes. One knows what he's doing but he's lazy and sloppy and will leave stripped bolts and shit like that, unless you're his friend then he'll do a killer job and hook you up. He put a clutch in the Rodeo I had it was supposed to be done in a day, it was there for WEEKS. The other is in cahoots with the junkyard right across the street and they'll spray paint a transmission and charge you for a brand new one they got from across the street. A friend of mine had a V8 ZJ I eventually bought from him. Me and a couple other friends did a 242 swap for him cuz the shitty 249 was shot, well it was making some noise so he took it to them, $900 later he had a "new" transfer case but they took off the front driveshaft and gave it to him and said it needed u-joints. They were SHOT..that was his whole problem. The case was fine..I got under and looked and it was the same exact case we put in there they spraypainted it and you could look up higher and see dirt and mud and shit on it. Thats the case I still have in my jeep now.. I rolled that one, bought a 98 318 and put the 242 in that cuz that shitty 249 was shot too (go figure) Fucking idiots. Can't trust anyone really it pissed me off. Sorry for the long rant. Back on topic now...

 

awesome tech may have to go that way when i build my next jeep

 

This is now tested, work´s great!

it´s much easier now to drive in high range too. no more slipping the clutch when leaving (4.1 gears and 37" tires)

 

Wish I knew about this when I rebuilt my ax-15. I already had to replace 1st gear! Couldn't find a thrust washer anywhere! After waiting about 2 months on 3 different online stores it finally hit me, maybe I should call the stealership! 2 days later I had it for about 5 bucks more than online! Oh well, I sold it anyways. NV4500 6.34:1 1st

Do you use the ax-15 thrust washer or the toy? Or does it matter? Might do this on a buddies, he's leaking at the intermediate plate really bad anyways.

 

Do you use the ax-15 thrust washer or the toy? Or does it matter? Might do this on a buddies, he's leaking at the intermediate plate really bad anyways.

Im not sure what washer do you mean? But all bearings and synchro rings are same in both transmissions.