Who's running Yota axles with NO vibes

[Wyld Bill]

So a show of hands then I'll ask more Q's. Who on here is running Yota PU axles on a Samurai with a Samurai t-case without a way streached out wheelbase and the stumper,.....NO DRIVELINE VIBRATIONS?

[yager]

With NO CV (2 joint shaft) and no pinion angle its possible to not get a lot of vibes, assuming you in range on operationg angles.

wth a CV you only gonna get so good do to the off set and the pinion rolled up. you can cancel the up/down angle with the CV, but the side/side will always be there...

I have the later and its great on the trails and is drivable for my weekend romps, and i can easily get to/from the trail heads with out ratteling my cage.... (you catch that pun)

-yag

[78mphgpr]

Stock t-case, rear centered Yota axle, front yota shaft shortened on rear, Rockrat adapter, axle moved 1.5" back, NO VIBES.

[Rudezuk]

42*cv's are your friend

[Wyld Bill]

Originally posted by zukipuke
With NO CV (2 joint shaft) and no pinion angle its possible to not get a lot of vibes, assuming you in range on operationg angles.

wth a CV you only gonna get so good do to the off set and the pinion rolled up. you can cancel the up/down angle with the CV, but the side/side will always be there...

I have the later and its great on the trails and is drivable for my weekend romps, and i can easily get to/from the trail heads with out ratteling my cage.... (you catch that pun)

-yag

Hhmmm just trying to figure out the key to unlock the door on this chit. I'm running a front pre 86 Yota driveshaft with an adapter I had made up. I think the vibes are TERRIBLE I will not drive it on the road. The drive shaft seems OK. THere is a tiny bit of play at the CV end on the driveshaft. I just swapped my stock rear Samurai driveshaft in with no adapter (just redrilled Yota axle flange) & it isn't as bad as with the Yota D-shaft but still has bad vibes especially when accelerating from a stop & slowing down with the Zook in gear. I don't know if I should just spend the big bucks for a custom driveshaft, get another Yota shaft & try it, get a different adapter (maybe it was made wrong), or try to go back to an off-set rear axle again.

[78mphgpr]

Take your Yota shaft to a DS shop and have them check it out.

[Bill4rest]

Don't know yet, I'm running arizona rear cv, but my pinion bearing is shot.....

[Shrock]

I dont have any, but I have a Taco axle that is cut down 3" on the pass side.

Jim

[Wyld Bill]

Originally posted by Bill4rest
Don't know yet, I'm running arizona rear cv, but my pinion bearing is shot.....

Is that WHY your pinion bearing is shot? How long did it take you to get your D.S. from AAPA??

[Wyld Bill]

Originally posted by Shrock
I dont have any, but I have a Taco axle that is cut down 3" on the pass side.

Jim

So it's offset by 1-1/2" & you have no vibes?

[Bill4rest]

Originally posted by Wyld Bill

Is that WHY your pinion bearing is shot? How long did it take you to get your D.S. from AAPA??

Well I got it from Dave at Asian auto, and it took like a week.

My pinion was shot from the donor axle I got, and it is not caused from the shaft.

[Rockrat]

Well here is a list of guys I have sold adapters too this is not the hole list but what i have entered in to the data base so far
Toy axles with adapters no complaints that i have heard
Neale Geis
Jim Ar
Tim N
Corey b
Doug J
Doug I Bought 2 full pairs
Graeme T
Kris K
Terry Wi
Roger W
Gene A
Erik F
John R
Lonny R
Paul P
Matt M
Brad J
Dave S
Nick A
Josh P
Steven S
Kale L
Cody F
Thomas M
Casey J
Douglas R
Figmo Roadless Gear I dont believe he has his on yet
Lawrence F - still has a slight vibe
CAN it be done YES

[fatkid]

I ran for about 1 1/2 years with almost stock wheel base and no vibes.

[Rockrat]

Originally posted by fatkid
I ran for about 1 1/2 years with almost stock wheel base and no vibes.

F/K lives where you been hiding Bro.....

[fatkid]

I'm here, I been in my garage doing some top secrete work. But really, I just can't count the time I have posted and reposted on the same subjects. So I just keep out the spam and keep it clean in here.

[Rockrat]

Originally posted by RudeZuk
42*cv's are your friend

Shane how did the adapters work for you???

[Wyld Bill]

Well, I guess I just need to get a different adapter or try another Toyota d-shaft. The thing that I don't like about the adapters that I had made up is they didn't make the circle in the middle of the adapter that protrudes out & into the Samurai t-case. Wouldn't it be centered good enough with just the four bolts that hold it on?

[Rockrat]

Not if the holes were off

[ShadowZuk]

I just got done putting toy axles under my dads zuk. Used the same d-shaft spacers and a stock shaft. I turned the samurai flange 90 degrees to the holes in the toy flange and drilled them out to 5/16's


I got very lucky. It is as smooth as glass at all speeds.

[SilverZuk]

Obviously your adapter or shaft is the largest part of your problem. You took them off and it got better. The CV may be worn out if it vibrates very hard under load and not much at all when at cruising speed. Either that, or axle wrap is causing your shaft to bind.

You might want to take your CV shaft to a local shop and have them check it for you, and possibly rebuild it. If your adapter is not within a few thousands of being centered, it will cause bad vibes. I think factory specs on a d-shaft is 0.005”, and I have had guys tell me that you should be able to feel that depending on the vehicle.

When I drilled my t-case flange, I measured and marked with a scribe from three separate point of reference, punched it, and drilled with a hand drill laying on my back in the driveway. Two holes ended up being about 1/16” or less off from my reference marks. I had to clearance all the holes to make the d-shaft fit.
Bottom line is that it vibrated so bad that I shifted to 2nd once, quickly shifted back to first, turned around and idle back to the house.
I ordered a Rockrat adapter to solve the problem, instead of finding another flange and risk screwing it up too.

Bottom line is, if your adapter, d-shaft, or anything else in your driveline is out of tolerance the vibrations will literally disintegrate your rig. (Ever had a U-joint destruct and limp home on it, same thing).

Good luck and keep us posted on your solution, no matter how simple or complex it is. I’m getting ready for a toy axle swap and am gathering info.

[SilverZuk]

Originally posted by Wyld Bill
Wouldn't it be centered good enough with just the four bolts that hold it on?

If the holes were off
OR
The tolerance of the bolt vs. hole used allowed the D-shaft and flange to move a few thousands of an inch.
To avoid this use a shoulder bolt and interference fit.

[Tusker]

Bill, it sounds like your CV is toast. When I first put my Yota shaft in, it was sooooo bad that idling it in first gear I got BAD vibes and clunks. I took it to the driveline shop and they put a spicer CV in. Now, I have absolutely no vibes.

The other issue is pinion angle. You should be running the pinion about 3* or 4* below dead flat with the driveshaft. I am sure you know that, but I didn't see anyone mention it.

[Shrock]

Originally posted by Wyld Bill

So it's offset by 1-1/2" & you have no vibes?

No, it is offset 3" on the pass side.

[Rudezuk]

Originally posted by Rockrat


Shane how did the adapters work for you???

We are making a new pilot bushing to mate out dlines to your adapters.....the bolt pattern is nice though

We did have some problems mating a 1310 toy flange to it, so we went back to our other flange..

[yager]

Originally posted by Wyld Bill
Well, I guess I just need to get a different adapter or try another Toyota d-shaft. The thing that I don't like about the adapters that I had made up is they didn't make the circle in the middle of the adapter that protrudes out & into the Samurai t-case. Wouldn't it be centered good enough with just the four bolts that hold it on?

The centering ring does just that, the adaptors will do this for you or machine out the opening on a stock large flange t-case flange. The bolt only are there to supply clamping pressure.

-yag