Dangers of Running Rich, 3sgte owners |
Dangers of Running Rich, 3sgte owners |
Sep 29, 2004 - 11:02 AM |
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Enthusiast Joined Jan 17, '04 From Illinois Currently Offline Reputation: 0 (0%) |
Well, ten days into ownership of the 3sgte and I can safely confirm what everyone else has said over and over....these engines run very rich. I have read many posts about this and about the fact that Toyota made it this way to avoid lean conditions. However, I would imagine that running an overly rich condition cannot be good for the engine over time either. I am wondering whether for engine longevity and reliability purposes, us 3sgte owners should take action either through an S-AFC or stand alone to lean out the A/F ratio. Obviously, we can see some horsepower gains from doing so but I am particularly interested in responses dealing with engine life.
-------------------- QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback] i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this. |
Oct 5, 2004 - 1:47 PM |
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Enthusiast Joined Jan 17, '04 From Illinois Currently Offline Reputation: 0 (0%) |
The way I interpret that thread on mr2oc.com is that the fuel pressure drop across the rail is bad for tuning. If you were to try to tune for a 11.5/1 afr, the afr is an average figure for all 4 cylinders. The fuel pressure drop across the rail means that some of the cylindars are more rich and some are more lean. The good news is that our engines run exceedingly rich. So, while I probably wouldn't do aggressive (or really any) tuning prior to a rail upgrade, I do not think merely adding the Supra TT pump and retaining the stock 440's is going to cause the problems set forth in that thread. -------------------- QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback] i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this. |
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