lets see..i have a vortech s/c got it installed at vortech, never was tuned by them (said it wasn't needed) installed in dec. lived in so cal until june, drove up to oregon saw some smoke got it tuned with 11.7 af with 93 oc. stock boost, smoke never went away, bag dyno #s (only 303rwhp) asked questions got a compression check, blowing past the rings on the pass. bank. thats all i have so far. (i've been out of town for a few weeks) now sitting at a engine shop waiting for my turn with the builder, to trear it apart to check all components. let you know when i get any new news

dustin

 

A lot of people have jumped on this Group Buy on forged internals. (Yes...another shameless plug).
Dustin..I know you are already in!

https://my350z.com/forum/showthread....threadid=85958

 

Hope the news isn't that bad. A few questions if you dont mind. What octane were you burning up to the time you noticed it smoking? I assume vortec split second Fuel/Calibrator was controlling (no R4 s/w changes). And did you notice a step function drop in performance or a gradual one? or any at all? It sounds like if not for the smoke you might not of known of a problem..Thanks

 

I think he was running the CA 91 crap before moving to Oregon where they have the good 93 stuff. Seems like the vast majority of the Greddy and Vortech blow-ups have been on 91 octane gas.

 

I dropped my g35 off today for the vortech install. While i was there he told me that the have toasted two ati 350's. Apparently both were running 10 lbs boost with a pulley swap but using the e manage so a/f was (apparently) fine. His theory was that of most here. That the rods are crap, and under greater boost you get piston slap which scores the walls and leads to premature wear thus causing severe oil consumption. Seems like a viable opinion.

 

Actually joenismo is in WA, are they also using 91 craptane? I'm a little worried about boosting more. Will have to stay stock boost for now.

 

Alsmost all gas stations here in Washington state are 92 octane, but I have found two stations that sell 94.

 

Hmmmm! I have never seen rings or cylinder walls worn out due to boost. What I have seen are broken/bent rods, cracked/burnt pistons and crushed/broken top ring lands. A crushed or broken ring land can freeze the ring/s in place and if you continue driving it like that will may very well damage the cylinder wall. It's the chicken or egg issue and very unlikely that worn rings or cylinder walls started the problem.

 

but there are also a lot of Zs in CA.... there's a lot of people in CA!

 

So which FI systems are the most reliable? Are they all pretty good if you stay at the stock boost level? All this engine trouble makes boosting seem fairly unappealing.

 

im starting to think that i need to wait and go back to the good ol supra!! just cant beat the 2JZ engine!

i would have loved to boost the Z tho

 

would like to revisit this thread.
Can anyone else add? Has anyone blown a Supercharger on STOCK BOOST?

 

Sirmikel1 blew his motor way back when he had the procharger tuned at XX tuning.The next day he blew #6 cylinder from detonation..

 

Thanks!
Anyone blow a Vortec at stock boost that you can recall?

 

Ill be watching this one.

 

hopefully someone will chime in

 

Yes, Enron Exec and Dustin blew their rings with the Vortech kit at stock boost levels.

Seems like the vortech kit engine failures were caused by rings and piston failure, and the Greddy and PE kits mostly by rod snappage.

This makes sense since the TT's reach peak boost and cylinder pressure at relatively low RPM.

 

wow, this is an old thread!
don't know if i commented yet (too lazy to check), but my setup blew a little something like this..
stock 04 350z motor
greddy tt kit w/fmic
timing harness with diodes, pulling 3-4 degrees timing
8/8.5 lbs of boost at 5500 ft altitude (cylinder pressure equivalant to 6.5 lbs at sea level)
that's about it...

damage:
my old motor is not completely disassembled yet, but from the looks of it, two adjacent rods broke, piston parts galore, two nice big windows in the block...suspected damage to one/both heads (metal pieces in intake manifold)...hmmm....and the best part of it all....only 2 months after my car had the kit installed!!!! wooohooooo

but, my rebuilt motor is done and will be in my car in a matter of days...ernie's car just got fired up last week, sounds meaner than two rats in a wool sock!....so we are both coming back with a bigtime vengance~!!!!

i though an actual 380rwhp was a lot of power...we'll have to see about 15-18 psi and an ACTUAL 500-550rwhp!!!

T
O
D
D

 

Actually Enron Exec had the ATI kit.

 

I know of two vortech's...Dustin which was already mentioned and booger. Booer was using DFW's map for the split second which did not have enough timing pulled. DFW was pulling timing through the ecu also, but booger could not see this or know this. Booger's problem was caused by unknowingly using a map that would not work on his car.