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**all revs listed are SC revs**
M62 Max
boost:
10psi/460cfm @ 14000 rpms
M62 hp
gain:
7hp @ 4000 rpms, 36hp @ 14000 rpms
M62
Operating temperature:
135° @ 4000 rpms, 180° @
14000 rpms
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M90 Max Boost:
10psi/520cfm @ 12000 rpms
M90 hp gain:
10hp @ 4000 rpms, 42hp @ 12000
rpms
M90 Operating temperature:
160° @ 4000
rpms, 190° @ 12000 rpms
___________________________________
From these
specs, it's easy to see why
the M90 pulley is
larger. It reaches
max boost of 10psi at 12000 rpms,
rather
than 14000 rpms like the M62. Hence the
larger pulley resulting in lower drive
rpm's.
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