rpecze

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?

Adam M

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.

fivepint

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

Adam M

yes they did, but still far from perfect.

fivepint

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]

rpecze

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..

submannz

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

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

rpecze

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)

David_Wallis

My mods are shown here...

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