[T3] (no subject)

[Keith Park]

Well my numbers may be partly due to where the sensor happens to be.  I get
pretty good gas mileage with the boat behind it so I think the full throttle
mixture is Ok... and I need to err on the cooler side with the towing I do
in the heat so I am set just a tad rich.

Where is your lamba sensor mounted?  What kind of exaust are you running?

Thanks

Keith


Top Notch Restorations
topnotch at nycap.rr.com 
http://www.a383ina68.addr.com/radiorest/main.htm
71 Squareback "Hothe"
65 Notchback "El Baja Rojo"
65 Squareback "Eggcrate"
87 golf "Winterat"
93 RX7 "Redstur"


-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of mark
witwicki
Sent: Saturday, March 05, 2011 9:26 PM
To: type3-vwtype3.org at lists.vwtype3.org
Subject: Re: [T3] (no subject)

This might help explain a bit about AFR and where the EGT (exhaust gas  
temp), CHT (cylinder head temp), ICP (internal cylinder pressure  
peak), HP, and BSFC (brake specific fuel consumption)

http://s165.photobucket.com/albums/u45/CDNBullyboy/LM2%20logs/?action=view&c
urrent=435515.jpg

Note that maximum power and highest CHT both result from a slightly  
rich mixture.
  1/Brake Specific Fuel Consumption is fuel efficiency and it peaks at  
a slightly lean mixture. Note the much lower, and safer, CHT


>
> Well, its not that simple.  I have an LC1 and it depends on where  
> you put
> your O2 sensor and what condition the engine is under... youll get  
> in the
> low 10's under heavy acceleration and upper 14's or 15 under light  
> throttle
> or deceleration.  Under normal cruising conditions you want to see  
> something
> in the 13.2 - 14.1 area.
>
> Keith

Sorry I wouldn't be very happy with those numbers, low 10's would be  
stinkin rich at WOT.

I shoot for 13.0 to 13.5 at WOT and 16 for light throttle cruise, my  
square falls right on 14.5-14.7 at highway cruise right now and gets  
hotttt, but it is a bit of a high strung little single port..

  If it is city driving off and on the throttle, it runs and cools  
just great, then as soon as we hit the highway it starts warming up

But i ran out of time and warm weather last fall to do some more jet  
changes and testing with the LM2.

Mark


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