List,
This isn't specifically LSR related, just trying to wrap my lonely few
brain cells around using EGT data. I'm going to be playing with a MoTeC ECU
sometime soon beginning on a road vehicle as a bit of a test bed to figure out
how to play with the stuff.
1. I can log collector O2 as well as individual cylinder EGT figures to get
an overall air/fuel as well as a relative spread to be able to even out the
cylinders. How about some absolute figures for EGT (gasoline) as opposed to
relative ones?
2. I understand that the placement of the T/Cs has a bearing on EGT
numbers. Is there an optimum distance from the exhaust valve to T/C
placement?
3. Now here's where I'm really heading to. Not being in a position to
easily strap my engine to a dyno and mapping the ignition by MBT (minimum best
torque), can I establish a relationship between an absolute EGT number and
optimum ignition advance knowing that the O2 is on the money?
4. Failing that, where's the best place to attach a 'knock sensor' on an
EFI SBF. Number 8 being the best flowing runner and number 1 the worst.
I figure between fake rocks, NASCAR T-Birds and all the rest of this
wonderful brains trust, I'll get a direction to follow on to the next step.
Anyone know of any sites that spout the relative merits of sequential, semi
sequential and batch fire setups?
Sorry about the big post guys, I'm thinking through the keyboard.
Nigel Shaw ( Down here in EnZed as the nights get cooler and the overalls get
zipped a little higher out in the shop - no heating )
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