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-   -   Intermediate Shaft Gear Sets 0 & 1 (http://forums.pelicanparts.com/911-engine-rebuilding-forum/1144965-intermediate-shaft-gear-sets-0-1-a.html)

porschedude996 08-18-2023 07:13 AM

Intermediate Shaft Gear Sets 0 & 1
 
Is the application difference between 0 and 1 to compensate for Crank Centerline to IMS Centerline differences in the case during initial build?

dannobee 08-18-2023 09:35 AM

Set the gear backlash with the different sized gears. There's a chart in the workshop manual.

porschedude996 08-18-2023 09:54 AM

Quote:

Originally Posted by dannobee (Post 12070738)
Set the gear backlash with the different sized gears. There's a chart in the workshop manual.

I haven’t looked at the books yet. I’ll check out the data. thank Doesn’t the “0” stamped number on the case indicate that a “0” set of gears are required?

Flat6pac 08-18-2023 09:55 AM

There is a size stamped on the pulley side of the cas to the left to match the IS.
Bruce

porschedude996 08-18-2023 10:13 AM

Quote:

Originally Posted by Flat6pac (Post 12070752)
There is a size stamped on the pulley side of the cas to the left to match the IS.
Bruce

So back to my original question. Having two choices “0” or “1”, as indicated on the case, that can’t be interchanged. Meaning “0” case, “0” crankshaft gear, and “0” on the IMS gear. I would imagine someone here has a “1” case. So the only thing I can come up with is, that some dimensional deviation during the machining process of centerline (crankshaft) to centerline (IMS). Going to “1” if a the value over “X”.

Anyone agree/confirm?

targa72e 08-19-2023 10:19 AM

Yes, like many things on 911 engines the parts were matched after machining to get tighter tolerances. Ultimately you are looking for a certain amount of backlash. Thread below has charts that show the mix of 0 & 1 cases along with Intermediate shaft gears and acceptable backlash and machining differences.

http://forums.pelicanparts.com/911-engine-rebuilding-forum/1012916-intermediate-shaft-assembly-question.html

john

porschedude996 08-19-2023 01:19 PM

Thanks, i’ll be checking that during my assembly.

Rosco_NZ 08-19-2023 04:22 PM

Only as it left the factory. If the case &/or int shaft has been align bored, the numbers may not apply. Measure gear backlash is the only way to be certain.


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