Early Mystery Flywheels

Shaun @ Tru6 · 07-05-2008, 05:30 PM

I have 2 flywheels here and need help identifying them.

One is 5-bolt, other is 6-bolt.

5 has no identifying number on it and is heavy.

6 has 910.102.205 0 R and is quite light (comparatively)

They are the same diameter, off by about 2mm on height.

304065 · 07-06-2008, 04:27 AM

Count the teeth. Five bolt = NARP

Shaun @ Tru6 · 07-06-2008, 05:24 AM

Both have 130 teeth, the 6 bolt has a new ring welded on

NARP = 914?

Do you know where I can get specs for the 910 wheel?

djpateman · 07-06-2008, 05:49 AM

Yes, the 5 bolt looks like a stock 914/4.

BURN-BROS · 07-06-2008, 06:18 AM

Any timing marks on the 910?

Shaun @ Tru6 · 07-06-2008, 08:57 AM

Quote:

Originally Posted by BURN-BROS

Any timing marks on the 910?

none that I can see. it does have a large 574 scrawled into the outside wall, but that's it.

djpateman · 07-06-2008, 06:49 PM

On the 5 bolt, others on the Early S list mention VW, however with the bearing residing in the flywheel it is definitely 914.

sww914 · 07-06-2008, 07:21 PM

Looks like a 914-4 and a 914-6 to me.

dvkk · 07-08-2008, 12:24 AM

Quote:

Originally Posted by djpateman

On the 5 bolt, others on the Early S list mention VW, however with the bearing residing in the flywheel it is definitely 914.

I believe the late Bus 228mm flywheel has the bearing in the flywheel too, just like your VW-Porsche 914.

Shaun @ Tru6 · 07-08-2008, 07:56 AM

thanks for the ID's on these. if anyone knows where I can find the specs for 901 flywheel, please let me know. want to know if it's in spec, and how far.

sww914 · 07-08-2008, 10:04 AM

Nearly every automotive machine shop should have the flywheel specs. They should know how thin it can be cut and still be safe.