Searched the archives for this topic, could not find anything so I hope its not bringing up the dead...

Anyway...

Several Cars in AUS, have had Piston #2 Failures...
These cars were running higher than std Boost, and leaner fuel ratios. (aftermarket ECU's)

Wanting to know more about this phenomenon.

I have heard that, this usually happens due to:

1. Standard Exhaust manifolds have uneven flow.
2. Fuel line that feeds injector to Piston #2 has a crushed bend.

Are these true?
Any remedies?

 

parallel feed to injectors rather than serial. so that no injector is more than one injector away from the source.

I believe the standatrd fuel rail design is a bit lame, depending on year of car.

Custom fuel rails can remedy this problem quite easily.

 

i know the fuel rail was mentioned on the "big end no3 thread" a while back, most rally cars do the mod adam M mantioned, check out www.ravensblade-impreza.com for more info on it...

@adam M do u know if they changed rail design on the phase 2 engine?

Cheers

 

yes they did, but still far from perfect.

 

thx

http://bbs.scoobynet.co.uk/Forum9/HTML/002503.html


http://www.scoobynet.co.uk/bbs/thread.asp?ThreadID=65110&Page=1

is the one of the more techincal threads on engine failures

Cheers

[Edited by fivepint - 9/4/2002 5:20:47 PM]

[Edited by fivepint - 9/4/2002 5:24:16 PM]

 

Thanks for the replies Guys....

I once saw a DIY Fuel Mod, but can't remember were... it was very indepth and heaps of pics...anyway..

do you know if a MY99 - build NOV99 has this prob, or is it better than the previous makes..

 

Yes parallel fuel feed, plus dual feed into the fuel rails.

First mod for medium-low to medium mods.
second meduim to high mods.

 

After Reading all those Threads - WOW! intresting Reading....
Fantastic input...

One Q's
Has anyone had a Big End No. 3 Failure or No.2 Piston Det(very pop in AUS)

With any or all of the follwoing mods...
FMIC (especially this mod)
Fuel Rail Mod (Series to Parrallel)
Oil Cooler
Headers(extractors)

 

My mods are shown here...

http://www.scoobynet.co.uk/bbs/threa...D=89747&Page=9