Michael,

> I've been wondering what would the speed be now at 4000 RPM in the SA
tranny
> in 5th gear.

The speed at 4000 RPM with a .815 would be @ 78 MPH. The actual speed would
be determined by the tire height.

The RPMs do not drop a lot from the four speed .85 fourth gear. That is why
I decided to go with a .70 fifth gear not a .82 when it was rebuilt. At 4000
RPMs I can go @95 MPH with a top speed of @133 befor the rev limiter would
activate.  I had a taller fifth put in to cut the RPMS, now they will be @
3100 RPM at 70 MPH.

 Currently on my vanagon, 4000 RPM IS 72 MPH.  I cruise 50 miles a
> day on the freeway, non stop, at around 75 MPH.  A reduction of the RPM's
> would be nice.

To reduce your RPMS get a taller than stock .815 gear installed.  Weddle
Engineering [(562) 598-2731] Can install a .70 fifth gear.

I am in the process of rebuilding my engine and adding the 5 speed.  I am
doing performance enhancements to my 2.1L engine.  This will help the fuel
mileage and the power.  The only real gas saving switch was to a .70 fifth
gear.  Since all the injectors fire at the same time, I needed to reduce the
total number of times the injectors would fire to actually increase gas
mileage.  When the engine is in and running, I plan to go to 15" rims and a
choose a tire height (now @26") to set the RPMs to @3100 at 70.

Robert

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