I'm changing the steering system on my 1948 Desoto Suburban (9
passenger, 4800
pound vehicle) from the original pitman arm steering to rack and
pinion steering.
I purchased a rebuilt back-steer rack and pinion (45" long) that was
for a
1995-2005 Chevy Cavalier or Pontiac Sunfire. I built the mounting
housing, new
steering shaft, new power hoses from the pump, and new tie rod ends.
I still
have to cut one side of the motor mount (1" x 2") off to make room for
the
double D U-joint coupler so the rack can turn (not done yet).
I found the travel on the rack is only 2.5" on each side. This does
not give
me enough turning angles on the wheels (I need at least 4").
A couple of solutions I thought of are:
* To get a rack from some other vehicle (maybe a truck) that would
have more
then 4" travel on each side. Trouble is - I don't know which trucks
would have
this type of rack.
or
* To make a shorter steering arm for the existing Desoto but I would
have to
find a shop that could do this and I don't know if this would
compromise safety
as the tie rod ends and the rack will carry more stress when
turning.
Would anyone have suggestions on other ways to (safely) resolve this?
I can
email pictures of the steering configuration.
DEEPNHOCK - 21 Mar 2008 13:54 GMT
Have you 'really' thought this out?
You compromised safety the minute you started putting a lightweight
automotive steering R&P on a truck.
Take your 4800 pound vehicle and stick 9 of your best friends in
there.
Calculate the weight then..
Then drive them down that winding mountain downgrade.
My opinion?
Take the rebuilt R&P lightwieght R&P back and either rebuild the truck
rated stuff you have of get a truck R&P that is rated for the weight
range you are going to be running.
Sound harsh? Well... I hope so.
Swaps that involve steering and brakes need to be very well thought
out, planned, and 'scienced out' before steel is cut.
Some early on tape measure time would have pointed out the steering
travel discrepency.
Without seeing the stock steering arms it will be hard to tell if they
can be shortened or not.
Anything is possible.
Don't give up!
But size your equipment to match the job.
Just an opinion from someone that shares the road with you and your
work.
Jeff