Ok, thanks.

On Mon, Aug 22, 2022 at 12:06 PM Dennis Haynes <d23haynes57@hotmail.com>
wrote:

> Easy enough to drop the pan and check if the ring gear has any side to
> side or axial movement. If not the bearings are still good. Those bearings
> turn slow with out much load. As long as there is oil and it is not
> contaminated those bearings do last forever. Usually, it is the pinion
> shaft bearings and seals that go bad, they are turning at engine RPM. My 91
> is now over 295K with original trans except for the torque converter and
> parking pawl. At last gear oil service, I see the rear pinion bearing
> moving in the case. I know the case is shot so running it until it dies.
> I’m looking for a good used auto final drive!
>
>
>
> Dennis
>
>
>
>
>
>
>
> *From:* John Rodgers <jrodgers113@gmail.com>
> *Sent:* Sunday, August 21, 2022 11:14 PM
> *To:* Dennis Haynes <d23haynes57@hotmail.com>
> *Cc:* vanagon@GERRY.VANAGON.COM
> *Subject:* Re: A mystery
>
>
>
> Thanks for the info. I don't know much about these things. I feel I have a
> steep learning curve . The man who did the engine conversion told me about
> the loose  bearings. I went to my transmission rebuilder who has years of
> rebuilding experience including various VW vehicles and talked about the
> bearings. I mentioned the problem. He immediately identified it as being
> associated with those bearings. Don't know what else to say about it. The
> van is high mileage, like 242,000, and the tranny has never been cracked
> open except for standard servicing. No doubt those bearings are worn.
>
>
>
> On Sun, Aug 21, 2022 at 8:53 PM Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
>
> The output axle bearings are not the source of any play. When they go bad
> it is obvious and will usually be accompanied by a destroyed ring and
> pinion set. The axle flanges and stubs are one piece, that slide into the
> center bore of the differential and engage in the splines of the
> differential gears. Some rocking and lateral play is normal. If using
> magnets and a sensor on the CV jpints you can add a 3rd magnet to
> increase the speed feedback to the ECU. Someone can also tune it to allow
> full revs regardless of vehicle speed.  You may also want to consider a GPS
> to check speedometer accuracy. Another option for the VSS is to use the
> speedometer pick up for the cruise control.
>
>
>
> Dennis
>
>
>
>
>
> *From:* John Rodgers <jrodgers113@gmail.com>
> *Sent:* Sunday, August 21, 2022 9:13 PM
> *To:* Dennis Haynes <d23haynes57@hotmail.com>
> *Cc:* vanagon@GERRY.VANAGON.COM
> *Subject:* Re: A mystery
>
>
>
> Ok, thanks. BY CARRIER BEARINGS I mean the bearings for the stub/flange
> that sticks out of the transaxle that the CV's mount to. I can get OBD 2
> readouts on my phone. Just haven't done that yet. Tonight perhaps. At 70
> mph the tach reads 4000 rpm. 70 MPH IS THE MAX I will ever drive it. 60 to
> 65 in most places. I'm not in that big of a hurry to go anywhere at my age.
> eVENTUALLY i will install a temp gauge for ATF temp monitoring. As always
> if you own a Vanagon it's an ongoing project.
>
>
>
> On Sun, Aug 21, 2022 at 5:24 PM Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
>
> By what are you referring to as the "carrier Bearings". What are you using
> for the vehicle speed sensor? If possible use the OBD 2 to see what the ECU
> is seeing as the vehicle speed. Since you are running automatic with
> original gearing you need to get the VSS to rear close to what the engine
> would expect at over 4,000 rpm. For that engines original application 70
> mph would be well under 3,000 rpm. For best results you probably need a
> 3.27 RP set and some serious ATF cooling and temperature monitoring.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of John
> Rodgers
> Sent: Sunday, August 21, 2022 4:33 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: A mystery
>
> I have a fairly new Subaru engine conversion in my van.  The engine itself
> is basically new by way of an overhaul. It has 800 miles on it now. The
> carrier bearings are a bit worn and they wobble sufficiently at 70 mph as
> to cause the VSS to get erroneous signals which in turn causes the engine
> to jerk like misfire or improper or inadequate fuel mixture. The carrier
> bearing problem will be fixed next week. IF I keep speed below 70 then no
> problem. However in ranges between 55 and 65 the engine will sometimes
> suddenly shut off as if Ihave turned off the ignition. If I keep my foot on
> the gas pedal then the van continues to slow down. If Ilet of the pedal a
> few seconds the engine picks up and continues on its merry way.
>
> Anyone have any idea what could cause this?
>
>