Chuckles

Vehicle Info: LS2/T56 converted Miata;

Observations:
- Rear Seal Has Been Replaced;
- No apparent play in the driveshaft.
- After each drive I have a nice ring of transmission fluid around the bottom of my car.
- The portion of the yoke that slides into the T56 is dry to the touch which makes me think its not a tailshaft seal problem.
- Drops on the floor occur right under the ears of the yoke.
- Feeling around the transmission including shifter area I do not notice fluid.

Please take a look at the pictures and help me diagnose the problem because I can't find the source.

[IMG][/IMG]


This picture kind of shows why I am stumped: The spray is relatively narrow and centered around the yoke. If the tailshaft were leaking I would imagine the spray pattern would be wider as it would fling off the portion of the yoke that slides into the tranny. It is hard to tell but there is gap between the end of the t56 and where the spray starts. Also I can press on the newly installed seal boot and no fluid appears to press out.

[IMG][/IMG]

BALLSS

is the leak from the shifter base then driping down to yoke and getting slung around?

maybe with the car in gear running up on a lift you can see source...be carefull of moving parts though

BALLSS

is the leak from the shifter base then driping down to yoke and getting slung around?

maybe with the car in gear running up on a lift you can see source...be carefull of moving parts though

Chuckles

Don't think so because the shifter base (perimeter) is dry to the touch every time I check.

Exidous

iTrader: (11)

Rear drive shaft seal.

I know you just replaced it but I bet it's still leaking.

Chuckles

Here is another angle showing the spray pattern versus the tailshaft seal. This picture really shows situation. If you look to the top of the picture you can see the fluid spray which is directly inline with the yoke.

[IMG][/IMG]

jmd

iTrader: (4)

Hopefully Pirate allows hotlinking.

oldmano2z

jmd, Nice!!! I'll remember that!!! the oldman.........

oldmano2z

chuckles, that x-pipe continue to over axle? don't mean to jack your thread.

Chuckles

This is on a Miata which has a rear subframe & independent rear end. The X-pipe feeds through the rear-sub jut under the half-shafts.

GTA91

iTrader: (14)

Like JMD said, check the "plug" on the center of the yoke. I had that problem a few years ago on my high dollar forged yoke from Moser.

Chuckles

Is fixing the plug a DIY job and if so do I simply knock out the plug and re-install with sealant? What did you do to correct the issue?

Thanks

GTA91

iTrader: (14)

Yes, that's exactly what I did to mine... knocked it out and reinstalled it with some RTV. Never had another issue.

studderin

iTrader: (28)

do you have the vent tube on the passanger side running up long the trans still? if you just put a cap on it, when the trans warmsup it needs to vent. Or it will **** fluid out the easiest spot.

jmd

iTrader: (4)

Even a properly vented box will leak out a yoke there. BTDT. These trans. need a closed yoke.

Chuckles

Yes, the factory vent-tube is installed.

By "Closed Yoke" do you mean a solid plug? I know some have a welch plug with a hole in the center.

jmd

iTrader: (4)

Yes, no need for a vent or bolt hole in these passenger car, slip-yoke style transmissions.