Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

Dyno Day, serious numbers, real proof, real pictures.


  • Please log in to reply
37 replies to this topic

#26 WJM

WJM

    SUBARU

  • Members
  • 7,828 posts

Posted 19 January 2004 - 08:11 AM

Thats exactly what I discovered. Evidently the comb. chamber is pretty efficient, since I was far away from the det. limit on those first 2 runs. the last two....i was right on it. And you see about 10 WHP difference.

#27 josh long

josh long

    USMB Regular

  • Members
  • PipPipPip
  • 95 posts
  • Tacoma, WA.

Posted 19 January 2004 - 06:12 PM

Originally posted by snotrocket
Timing doesn't always equal more power. The concept of pushing timing up until it pings and then backing it off is hogwash. Today's modern combustion chamber designs allow less total timing to be run and still burn quick. Do EA82's have an efficient combustion chamber design? From the sounds of it, I sort of doubt it.
.



Your right this engine does not flow well at all.

I think you must know you cannot run as much timing on a turbocharged car at 6000 rpm at boost as you can at say 2000rpm with little to no boost. Why would you not want to run as much timing as possible at any given boost / rpm range? For engine safety, or driveability, to deal with possible bad gas? If you want to get that fun push you back in the seat feeling you need pop! There is always some risk to play.


How do you tune your fuel and timing maps? This is how I have tuned a 2.3l stroked ej20 with 2.5 heads on a haltech ek6.

I was asuming you want to tune for power right?

There are ways to deal with the pitfalls of a poor combustion chamber design (detonation). One is water injection (cheap, water is free!) another is fuel ( bigger injectors).

Josh

#28 WJM

WJM

    SUBARU

  • Members
  • 7,828 posts

Posted 19 January 2004 - 07:50 PM

Fuel is not a problem. Detonation is not either with the PROPER fuel, as i have read, our pump gas is the worst on the planet.

Tell me more about this water injection....please?

#29 josh long

josh long

    USMB Regular

  • Members
  • PipPipPip
  • 95 posts
  • Tacoma, WA.

Posted 19 January 2004 - 08:06 PM

http://www.aquamist.co.uk/

You can build one of these for much less if you are crafty.

This is airplane technology from the 30's, pretty simple.

Josh

#30 WJM

WJM

    SUBARU

  • Members
  • 7,828 posts

Posted 19 January 2004 - 08:10 PM

Looks great! Thanks!

#31 josh long

josh long

    USMB Regular

  • Members
  • PipPipPip
  • 95 posts
  • Tacoma, WA.

Posted 19 January 2004 - 08:41 PM

This is basically direct intercooling, it cools intake air drasticly. You can do this with or without an intercooler. It is good! Most people run window washer fluid during the cold months to prevent freezing.

more good reading.

http://www.google.co...G=Google Search

Josh

#32 Leone400

Leone400

    New User

  • Members
  • Pip
  • 4 posts
  • Finland

Posted 24 January 2004 - 12:35 PM

Originally posted by josh long
This is basically direct intercooling, it cools intake air drasticly. You can do this with or without an intercooler. It is good!

Josh


using it is really a bad excuse for poor intercooling...........

#33 josh long

josh long

    USMB Regular

  • Members
  • PipPipPip
  • 95 posts
  • Tacoma, WA.

Posted 24 January 2004 - 05:59 PM

Originally posted by Leone400
using it is really a bad excuse for poor intercooling...........



This seems to have been used by a number if high horsepower motorsports like rally (WRC and group A level) and dragracing. If there is intrest and I can get ahold of a scanner I can dig up the ford motorsport diagrams with part numbers, for their H2o injection that was used on their Escort cosworths.

Josh

#34 WJM

WJM

    SUBARU

  • Members
  • 7,828 posts

Posted 24 January 2004 - 09:32 PM

I think a CO@ spray on an IC would be better. that stuff gets cold. But...its more expensive.

#35 josh long

josh long

    USMB Regular

  • Members
  • PipPipPip
  • 95 posts
  • Tacoma, WA.

Posted 24 January 2004 - 11:12 PM

Look here for more info on water injection.

http://www.ultimates...&threadid=10734

#36 Myxalplyx

Myxalplyx

    Old Wise and Dumb

  • Members
  • 1,834 posts
  • New Castle

Posted 25 January 2004 - 05:35 AM

Navybluesubaru's water injection install: Part 1

Navybluesubaru's water injection install: Part 2

FP18g + WRXtuner's water injection dyno'd today (12/12)

Have fun! :D

#37 Leone400

Leone400

    New User

  • Members
  • Pip
  • 4 posts
  • Finland

Posted 25 January 2004 - 02:08 PM

Originally posted by josh long
This seems to have been used by a number if high horsepower motorsports like rally (WRC and group A level)

Yes, but for a sertain reason.....because intercooler size has been forced to be so smaal because of regulations...turbos are "over runned" and intake air needs more cooling.


and dragracing.


Also use to have them but not anymore I think....

#38 josh long

josh long

    USMB Regular

  • Members
  • PipPipPip
  • 95 posts
  • Tacoma, WA.

Posted 25 January 2004 - 05:47 PM

Originally posted by Leone400
Yes, but for a sertain reason.....because intercooler size has been forced to be so smaal because of regulations...turbos are "over runned" and intake air needs more cooling.



I think most WRC teams use water injection to deal with the turbo inlet restrictors (34mm), the way they continue to get the same pop and more ft lbs of torque, is they up the compression ratio of the pistons. To continue without detonation they add water injection. I am positive that with the million$ of $$$$ spent they can use THE optimum compressor for the job. But I am not an engineer for a wrc team so I don't KNOW.

I do not care to drag race, although many local import drag guys use it. I only care to have a good reliable and powerful motor. If it is good enough for factory teams It is good enough for my silly little club rally car.

I cheat, I look at other sucessful efforts and duplicate them. The page I posted up is one of an entire book Ford put out on how to prep their cars for rally.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users