This new year, I'm beginning to sell off extra parts that I've accumulated over the years and no longer plan on using in my projects.

First up is this "H" gear set (19:32) used to lower the engine RPM when "flipped" (32:19) and installed as the 5th gear in the 914 transmission.


Click to view attachment
Click to view attachment

Sold to first PM responder, Tom W., pending receipt of payment.

I should of jumped on this

Both on and off topic.
What RPM drop would this gear give compared to a stock 5th ?
Could an 18:34 ( which is in every 914 trans) achieve about the same ?

Hi Rory,

18:34 is a stock 901 2nd gear which the 18 half is attached to the main shaft.
That is unless you have one off a 904 main shaft.
I do not know anything on the flipped H stats.

Dooooh !
Of course
I only dream of 904 input shafts.
I heard of reduced hiway RPM and possible higher top speed.......
I salivated without thinking.
Thank you Luke

Re: hypothetical gearing work up

Go to www.instant-g.com/

Scroll down to"Data/Information", then, gearing charts, finally, Excel or Excel95

You'll see an Excel spread sheet format where you can enter variables and get the answers you're all asking about how gear ratio and tire size changes contribute to performance.

Click to view attachment

In these examples, the RPM redline is set as the shift point for 2nd, 3rd, 4th, and cruising speed in 5th.
Ignore 6th gear references.

Notice the differences in 3rd, 4th, and 5th gear readings at 2500 RPMs between the two examples.

Looks like one could expect that the flipped "H" gear would yield 2500 RPM at 70 MPH with 205/55-16 tires. Stock 5th gear (ZD) is about 3000 RPM at 70 MPH.

Click to view attachment

Did this sale happen? If not ill take it and can local
P/u

Yes, payment was received and the gear set shipped on January 13, 2015.

Thanks to all who inquired and commented.

Cheers!