Jay Laifman
Donation Time
I just stumbled on this video on Youtube of a S3 with Holbay engine that's injected, with a 6 speed. Owned by Dave Atherton.
Very cool. Does anyone know more?
Very cool. Does anyone know more?
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Enjoy.
Holbay with Injection
- Thread starter Jay Laifman
- Start date
RootesRacer
Donation Time
My E128 ran for years with EFI and wasted spark. I cant touch the 6 speed though.
alpine_64
Donation Time
If you have OD its 6 speed.. And sort of paddle shift ;-)
RootesRacer
Donation Time
SII Factory race team had a 7 speed though most of the ratios were redundant.
alpine_64
Donation Time
My understanding is the rootes rally team did the OD on 1st to 4th.. Giving 8 fwd ratios.. And they had ton put a warning label on cars to remind drivers to disengage the od before going to reverse
RootesRacer
Donation Time
I thought I read 2nd to 4th (tail speed too low in 1st to make sufficient pump pressure).
Bad juju running the OD in reverse.
jdoclogan
Platinum Level Sponsor
Here is a quote from Wayne Stetina (Roy Stetina's oldest son) concerning Roy running a 7spd OD transmission while racing #21 Series II Alpine in the 1960s.
"Modified the overdrive unit with increased lubrication holes & rewired to engage in 2nd / 3rd / 4th. Put a switch on the top of the shift lever. That split the difference in on the 4spd gearbox with a 7spd close ratio trans that was an advantage on every race course, but especially for a lower gear at the start compared to any close ratio 4spd box.trans. 1st overdrive proved no significant advantage over going straight to 2nd, plus my father was concerned that the overdrive unit wouldn’t handle the torque in 1st. 2nd overdrive was rarely used on the race course as well, mainly for starts. But 2nd gear was too low to be useful for almost any race course."
"Modified the overdrive unit with increased lubrication holes & rewired to engage in 2nd / 3rd / 4th. Put a switch on the top of the shift lever. That split the difference in on the 4spd gearbox with a 7spd close ratio trans that was an advantage on every race course, but especially for a lower gear at the start compared to any close ratio 4spd box.trans. 1st overdrive proved no significant advantage over going straight to 2nd, plus my father was concerned that the overdrive unit wouldn’t handle the torque in 1st. 2nd overdrive was rarely used on the race course as well, mainly for starts. But 2nd gear was too low to be useful for almost any race course."