Advancing cam timing on 10vt - BTDT

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I once went to a qclub event, charged 50bux to do the cam advance, leave it
or put it back, same price.  Went home with double the money than the event
cost...

The valves don't hit pistons without REALLY advancing the cam, like it won't
hold compression.  You can easily adv or retard one tooth without risk,
including the late MC2.   You only have to realign the Distributor to
flyhwheel TDC and the computer won't error code.

IMS this procedure adds 6.5 degress valve advance, which brings down turbo
spoolup about 300rpm or so.  IME, depending on the tweeks, mods and computer,
this works really well, or NOT.  I did find that it worked really well on a
2bar modded Mac 14.

I've also used the adjustable cam gears as well.  For the ultimate, I'd
recommend going this route.  Somewhere 1-3 advanced is better in terms of
compromise, but you can get the idea on what it does in under 1hour.

HTH

SJ
87 44tqw 1.5 degrees ABT cam advanced
84RS2URQ stock RS2 cam timing
'83 URQ with stock WR cam  timing



>> I don't believe that the MC management system is even tracking the position
> of the valves, just the position of #1 piston.  Since the system is CIS,>
there is no compensation for valve positon

Orin:
>>.Right.  It doesn't care at all about the valves other than which
cylinderis on the >>compression stroke.  And once it gets initial sync
between hall senderand timing >>sensor, it can run without the hall sensor,
though it can getconfused as to the >>current cylinder.  All the current
cylinder number isused for at this point is to index >>a lookup table of
values which are usedto determine whether a cylinder is >>knocking, >>so a
flaky hall sensor cancause knock to be indicated when there is >>none.Orin.