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Forged pistons and rods.

  • Thread starter Thread starter Anonymous
  • Start date Start date
I am adding an E888 to the current setup which will give me the opportunity to do so - truth is I know its a good idea and I know it can and will be done - what I don't know is what I'll learn from doing it and what actions it'll lead to.

The Motec can run corrective mapping to ign and fuel I believe.

Is it worth the investment?
 
Its good information.

Your MBT might not be too high, but with high amounts of boost and fuel, your EGT's might be at point which actually leads to det or melted ex valves.

You can trim ignition to EGT aswell, as too high typically means that fuel is still burning on its way out.
 
I dont know, i dont use motec.

I would of thought that they had cylinder to cylinder trim, but on corrective measures it will most likely be broad spectrum.
 
You are correct - mappng by cylinder correction overall - is there a standard ideal for egt's or does it vary dramatically?
 
it varies on fuel, AFR, valve material, MBT etc etc.

But its good to keep an eye on.

Whats the most peak timing you have run so far @WOT?

And when you say next to no timing, i also assume that this is just at WOT, not accross the board. You still running 30-40 degrees at low throttle/high rpm points?
 
Yep just at WOT - running 5 degrees at peak on current ignition map.

Last time it blew up we had 23 degrees and it detted whilst putting out less power!!

The man that maps got changed!!!

Would I be right at about 850-900 degrees on Optimax with standard valves and a decent fuel map.

Should I monitor by cylinder or a the 3-1 point in the exhaust each side?
 
Who is doing the mapping now if you dont mind me asking, as mapping a complex boosted engine isnt an easy task, and its not something i would like to take on without significant instrumentation lol.

750-900 deg is fine, i typically work in fahrenheit thought and each engine will require something totally different to even a similar engine. It not doubt that with low AFR's and low MBT on your engine, that EGT's will be high.

I would place individual cylinder EGT probes, rather than one per bank, and monitor rate of change aswell as just the egt value. I would place the probes about 6" from the vallve, or on average 3" from the head flange face.
 
Mark Harrison at Owen developments - he really is a black belt on Motec systems.
They run a very large dyno and the Motec (http://www.Motec.au) software is highly comprehensive and flexible.

Owens (http://www.owendevelopments.co.uk) are the Garrett people in the UK with huge Turbo refurb and production capacity but you probably new that!

When the manifolds are made I'll get the bosses added in, SWR will then wire it all up.
 
Yea, everybody knows Owen lol.

I've played a little on the old motec software and it is comprehensive and fairly userfriendly.

SWR?
 
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