What really kills the engine?

zincsvtcobra · 08-20-2006, 06:53 AM

I'm kind of confused about an issue. I was reading the July issue of 5.0, the one where they took $1200 and made 88 more horses, and am concerned about the tuners. They stated that the tuners (SCT and Diablo) made the A/F ratio really rich, especially when they installed the 2.8 pulley. I think I'm concerned about a safe tune more than anything. I guess I want to know if anyone has had any problems with this and what you did to fix it.

HaV · 08-20-2006, 02:26 PM

Quote:

ORIGINAL: zincsvtcobra

I'm kind of confused about an issue. I was reading the July issue of 5.0, the one where they took $1200 and made 88 more horses, and am concerned about the tuners. They stated that the tuners (SCT and Diablo) made the A/F ratio really rich, especially when they installed the 2.8 pulley. I think I'm concerned about a safe tune more than anything. I guess I want to know if anyone has had any problems with this and what you did to fix it.

I dont have experience with the 03/04's, but I do with other boosted motors.. and I can tell you the thing that really kills the motor is people installing pre made tunes and running with them. Its not truly possible to just get a custom tune from a company and install it and it be 100% right. Any time you adjust a tune on a boosted motor it needs to be on a dyno with an A/F gauge hooked up so you can actualy see what is going on. Another problem besides the tune from a company being off, is people who have no buisness adjusting settings hooking them up and playing around with their settings. Its okay to adjust timing way up and tweak other things on a N/A motor.. but on a boosted motor its asking for trouble... you just dont know for sure if its really throwing off your A/F at a certin point or not.. and all it takes is one lean run to blow a piston ring..

If the problem your seeing is they are making hte cars run really rich, that should not be a problem. By default, you want a boosted motor to always run richer.. Rich is much much safer than lean.... but most people that play with them on their own screw that part up. lol

mysticsvtcobra96 · 08-20-2006, 05:25 PM

[sm=exactly.gif]

zincsvtcobra · 08-20-2006, 05:39 PM

Thanks HaV. Damn good info. I will try to get to Dallas this weekend to get her on dyno for a custom chip.

Dan04COBRA · 08-20-2006, 05:53 PM

Also a nother big reason for Terminator engine failures = a pulley shorter than a 3.10 with no upgraded heat exchanger.

The Eaton creates sickening amounts of heat, a shorter pulley increases the amount of heat.

David_K · 08-20-2006, 08:20 PM

good point. yeah you can make over easy eggs using the eaton blowers

spray175 · 08-20-2006, 09:37 PM

Quote:

ORIGINAL: David_K

good point. yeah you can make over easy eggs using the eaton blowers

LOL. I put the after market heat exchanger and the intercooler tank on my car. It definately helps keep it running cooler.

JamesTronix · 08-21-2006, 12:05 AM

Quote:

ORIGINAL: Dan04COBRA

Also a nother big reason for Terminator engine failures = a pulley shorter than a 3.10 with no upgraded heat exchanger.

The Eaton creates sickening amounts of heat, a shorter pulley increases the amount of heat.

+1

zincsvtcobra · 08-21-2006, 12:41 AM

I went ahead and ordered the AFCO Pro Series from rpmoutlet. I'll get the resivoir soon, but I figure this is the better of the two for now. When I bought it, it had a 3" pulley on it already, but theres no chip in the ECU or program loaded from a tuner. How unsafe is this? Exhaust smells normal and she runs great, so I figure she's ok as long as I'm not beating up on her too much. Am I wrong?

JamesTronix · 08-21-2006, 12:52 AM

You are probably ok. You don't have to get the bigger reservoir unless you just want to. You need a dyno tune though.