I am anxiously awaiting the article on the Ro-Spit coil over rear suspension. I
am planning on replacing the roto-flex couplings with CV joints in my GT-6 and
with my most recent diff failure, I have given up on the factory differential.
Consequently my CV jointed drive axle project is on hold until I have a source
for the diff. I have studied the GRM article on modifying the 2nd gen. RX7
diff housing and using a short nosed 1st gen. RX7 diff. This appears to be a
very clean (bolt in) solution - frame modifications not required. THe 1st gen
RX7 was only available in the US with 3.90:1 or 4.10:1 diff ratios. I would
greatly prefer something closer to the 3.27 ratio diffs that have failed in my
car. Does anyone know if lower (less than 3.90) numerical ratio diffs were
available in other parts of the world where fuel prices historically have been
much higher? I temporarily joined an RX7 list but met with stone silence when I
asked this question of them.
Second question - has anyone seen the car with its coil over rear suspension /
rear disc brake set up? I have surfed over to their website and it looks as if
the main leaf (or several leaves) from the transverse leaf spring remain but the
picture was very unclear and I was doing a lot of guessing and it was not clear
if the GT-6 hub/vertical link remained on the disc conversion. I have sent
several e-mails (unanswered) to GRM as to if my guesses are correct and when the
rear suspension / rear disc brake article is scheduled to publish.
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