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Removing Head From Rb26 - Scar Non?

Angus Smart

By Angus Smart,
in Engines & Forced Induction

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Angus Smart Grand Master

Angus Smart

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yer you seem to have had some det which will have a broken ring land when you get the piston out at a guess.

Have a look at the other pistons when you get them, take note of how the pistons look where the ring touches the ring land see if there is any marks that look like erosion.

yeah no worries, i will prob have it out in a week and post up all the info in the report that engine failure thread.

you think it would have been from detination? what are the exact causes of detination? i know of lack of fuel, are there others?

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted
yeah no worries, i will prob have it out in a week and post up all the info in the report that engine failure thread.

you think it would have been from detination? what are the exact causes of detination? i know of lack of fuel, are there others?

This topic was discussed not long ago.....

Check your spark plugs to see if fuel has caused this to happen...

6 should have been nearly burn't out.....if this is the case then it has been caused by detonation.

Some people suggest the best way was to increase the air flowing into 6 by cleaning up the plenum slightly.

The best way was to do it on the computer...ie increase the fuel into this piston.

But having said that this may not be your problem.

Your fuel pressure could have also caused this..either by faulty fuel pump or regulator.

Your fuel could have been bad.....some don't believe this at all...but you never know what some people put into

the pumps.

I would suggest you get your injectors flow tested just in case......6 may be faulty or flow less than the others.

Here is some reading for you

http://books.google.com.au/books?id=hiLYRe...QCFCU&hl=en

STATUS Grand Master

STATUS

Posted
Posted
The best way was to do it on the computer...ie increase the fuel into this piston.

yeah on all the 26's i tune i put a little more into 5 and a bit more in 6, i did not have access to thermocouples when i tuned cats but i used a killer infra red temp gun i borrowed from a aircraft mech mate and compared the temps and adjusted the individual cylinder balances till they seemed pretty close..... my method was bit rough but the % diff seems to be about right.

(WRX's and other setups for that matter need similar tricks)

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