So long story short i was running at 15deg timming.I asked the tuner if I should go to 20 deg the base timing .he said yea so I did and apperently over shot it or the timing light lied to me lol. But within a few days I was blowing smoke out the valve cover and burning oil.. so we have the motor in peices now. I was thinking to get the supertech piston rings but I hear nippon (npr) is oem..any in put on quality or turbo durability? Feel free to in put other companies

I've heard bad things about some supertech parts, nothing specifically about rings but I'm always leery.

Invest in some sort of knock detection man, to cheap not to.

or a timing light :p 5* is a lot on a boosted motor, next time around just do a couple at a time. You might have to do it 4 times going to the add 5 then back off 1 or 2

I have no knock detection or feedback being used in the rom. 10psi daily stock block.

Knock meter can keep you from popping a motor from lots of things though. Weak fuel pump, clogged filter, bad gas, motor over heating or any number of things that can cause knock. Timing light isn't going to help with anything other then the initial setup.

Timing is crucial with forced induction, but there's no sense not having all the warnings you can.

http://tunertools.com/proddetail.asp?prod=MSD-8964

I used to use this, saved me many times. I highly recommend it to anyone running boost.

WD

yea ima have to look into knock detection ive never thought of it before. im planning to stay 15 degrees and 14psi on this one
could have been bad gas, and i have over heated this car back in the summer tho when i realized ac needs the big shrouded fan to cool the condenser better then 2 little electric fans lol. so your saying maybe go with the nippon rings WD?

Never heard anything negative about them. I heard something about Altima rings awhile back, but I can't recall what it was, potzeimers

hm well they were $20 cheaper then the supertechs anyway lol win for me now ill jus throw on some arp rod bolts and im good to go

Real quick off-topic question for ya. You said you went with the 2870 Ebay special right? How's the spool time and what www. did you get it from?

IIRC the altima ring thing was the top ring was chromoly. Not sure its true...

hey wd thats a nice knock monitor, however its not in stock anywhere. Hear anything on the j&s single ? Its the only affordable option I can see, most are north of 300

Dang, the MSD was the best bang/buck option available. Most other controllers don't allow for a sensitivity adjustment, which is key to detecting actual knock right when it starts. I'll see if I can find them in stock anywhere, usually Summit has the everything.

WD

Well after a quick look, I can't find it anywhere either. I guess I need to get into the market because the options are limited and pricey. I can build one of those headphone kits for about 60 bucks and the software is free online to record and read almost any input these days.

Found one on Amazon, http://www.amazon.com/MSD-Ignition-8964 ... B000BYCS7I

woo thats steep. shouldnt the ecu be able to detect a fatal amount of knock? that costs more then my replacement motor lol

I for one disable knock sensor feedback in my tunes. But thats how I roll, beyond the fact the timing map stops working after x rpm and x throttle position. Did the motor pop up top or down low?

Was the ecu in timing set mode? making changes out of idle setting mode is futile and can result in a blown motor.

dang WD
thats high still but less than the rest I found.

what do you mean did it pop up top or down low? the backfire? car shoots flames ever since it was a stock na car with a exhaust lol. i set the timing according to the factory steps because i was working at nissan..

He means when the motor unassed itself were you in the upper or lower rpm band.

thanks wd

yeah when the engine blew? My last ring land failure was up top.

OIC who did the tune again?

ohh i mean it was still drivable so i didnt really notice. it just started smoking and progressively got worst over a few weeks then a misfire and cyl 2 coated in oil. its an enthalpy tune on flow tested 370cc inj

how much boost?
enthalpy is pretty good

about 14psi trying to limit it about 280 whp but on dyno i made 250 because the boost would spike and then fall off to like 8 psi.i hate internals