> Question, the 86 and 87 505 turbo gas use the same Garrett Turbo, Right?
> The 88 and up have a heavier duty, or bigger Turbo. Which Turbo is used in
> the 85 505? Was their increased performance due to other adaptations than
> a different turbo?
The 85 used the biggest turbo. It had 7.0:1 CR and no intercooler. It had
lag. HP=145
86-89 used the same turbo. The CR was raised to 7.5:1 as allowed by the
cooled charge of the I/C. The smaller turbo helped the lag.
N9TE had 150HP
The later N9TEA had 180HP as the boost was raised but controlled by the
ign. ECU.
The N9TEA had but 160HP probably due to exhaust restriction and reduced
timing via the ECU.