white pistons and valves?

[Sho Amo]

What does this look like to you?


My wideband shows that im running rich under wot. These pistons look like im running waay lean.




Btw the heads are already re-installed and the car has been running well since last saturday. im going to dyno tomorrow and see where im at.

 

[elarm1]

It is defitly running lean enough to burn all that crap off the piston but not lean enough to melt anything. The dyno should tell you everything you need though. Is the nitro kit wet or dry?

 

[St Louis SHO]

lol... You should be checking the spark plugs.. they'll be grey, just like the pics....

LEAN. Also, it may be pig rich on one bank but not the other. My guess is the grey pistons are on bank 1 (rear)

- James

 

[SuperHO]

call me crazy, but it looks like both banks, and both are running pretty damn lean. is your wide-band reading rich while spraying or all the time? maybe the wide-band's having issues?

 

[Toolman]

Looks like a big difference between 5 and 6.

 

[St Louis SHO]

My car lean looked like this:

Cyl 4 - electrode MIA
Cyl 5 - electrode half gone
Cyl 6 - grey electrode

Wideband said all was fine.... A few guys at the convention told me that those 2 cylinders always do that. I plan on jetting the fuel up on the rear bank in mine.

Just wanted to let you know you werent the only one who's had this "problem"

- James

 

[Sho Amo]

alright kool. i just got back from the dyno, 193 n/a 231 n02. with the %15 correction for it being a mustang dyno i should be at 225 n/a and 265 n02. the reason my nitrous number is so low is because my bottle was only at 550 when it should be around 900. it was cold and i have no bottle warmer. kinda blow about that but 225 isnt bad for 3.2 s/ 3.0 cams ported with butterflies and 80mm maf.

 

[Sho Amo]

also, my wideband read almost exactly what the dyno's did so im spot on. ill probably have the sheets tomorrow.

 

[Sho Amo]

wish i had the vid of my wideband.

dont even start, i know i need motor mounts.




a supercharged probe made 190whp on that dyno today with 12psi. i know its a mustang dyno but still...

 

[St Louis SHO]

You do know the rev limiter cuts fuel right.....????

 

[Sho Amo]

the first one was n/a dont worry. lol the shop is a probe/mx6/mazdaspeed place. they know boost/n20 pretty well.