As far as I know, they are fine, and the other cyl's are fine also. Oh well. So now we got to get a new block, and we are going with lower compression pistons, and pauter rods, up the boost and some other shiit.

Looks like I'll see it running in about 5 weeks, maybe.

 

i say for all that you are going to do to it I say go with a turbo setup, know it should be able to take 20psi boost if tune right.
cann't wait to see your WHP when your finsh, good lock

 

Are you willing to let us know how much this is costing? This looks like a nightmare to me.

I, for one, cannot afford to be buying new blocks etc. If this pattern continues, I guess I will be going NA.

 

You can't just replace that liner, instead of replacing the whole block?

 

Cost? I duno, I don't really care either, I want my fuucking car back. I'm getting all parts at cost, and labor, well from what it looks like, it's going to be real cheap, not saying the price but it's a good deal to me.

Price for stuff? I don't honestly know 100% yet, being that everything is at cost. I do know is this:

9.0:1 Pistons with rings and pins, $800
Pauter rods, 1000
Block, 1200

I need to find out the cost on:

JWT flywheel
JWT clutch
RC Injectors
ATI 14 Pound pulley
maybe head and stud kit, why the hell not

Only thing in question now is this. How are we going to control the new injectors. I wish the AEM EMS was ready to go, I have to call them up and see what the deal is. Maybe someone has some suggestions on how we can run these larger injectors, this damn ECU Nissan put out is annoying.

 

I said the same thing, from what they said, it's better off replacing the whole block, I have to go there and take a look, only 4 hours away

 

Who are the 9:1s from? SGP get you a special set?

Hey heard somewere of a stroker kit (~3.8L). what the heck

 

Nah, SGP just used JE pistons (i think), and Pauter rods (i think). I just went to JE directly and got em from them.

Oh word? A stroker kit? Where at?

Bill

 

Holy molten metal Batman!

That is an amazing picture. It's difficult to imagine how an engine can run for 100's of thousands of miles with no problem, yet with the exact same fuel it can be burned up in only a couple hundred when not tuned right. That cetainly shows that detonation can be so destructive.

Ravas,
I hope you are able to at least have some fun with this project now that you are really getting into it. Good luck!

-D'oh!

 

I need to search a few forums, I know I saw it somewere ,could have just been fluff , but a few extra cubes would be nice as long as the assembly is well balanced to not limit-redline.

 

ravz, good luck and hope this turns out. Just don't trust your builder too much-they were chumps the first time and this would be a challenge for a great tuner!

 

I hope everything goes extremely smooth for your new engine ravaz. 14psi and 9:1 sounds like a great combo, but i hope you run the full spectrum of tests and tuning this time around. 8-)

Please keep us informed, id love to see your new numbers.

 

I can see you paying for the aftermarket parts for the bottom end, but why would you be on the hook for the block ? The lean condition caused that block to get scored, you shouldn't have to eat that cost because of improper installation/tuning.


BTW- I applaud the fact that you are building the block now, gotta pay for parts, may as well be good ones

--wes

 

Since you are going all out, what would it take to get this motor to rev to something like 8K or more?

 

https://my350z.com/forum/showthread....threadid=42526

 

I agree, we have to do further investigation and figure out what caused it. Might have been an injector that failed, or maybe something off the ATI kit, or maybe it was just bad tuning. All I know is, when I was about to leave when picking up my car, I did let them know that the car was shaking/vibrating, but was told it was OK. I made sure the next morning I told them again, and I was told it was OK. Obviously it wasn't. I did give them the heads up that something was screwed up, but according to them, it was OK. We'll see what happens.

-Bill

 

I know Motec is making a standalone plug n' play or you could go with a greddy e-manage

 

An alternate approach could be to stick with your factory injectors
and add a aux injecter threaded into you plenum just past the
TBI. One source for such a piggyback controller is :

http://www.perfectpower.com/products/smt6.asp.
Extra Injector(s) can be had everywhere.
Basically the Piggyback augments the factory ECU by fooling it to the point were thr factory injetors are near flat-line, then the aux injector is staged in. Note both operations and timing can be managed via the same controller.

One possible con issue could be fuel drop-out , depending upon the actual manufold's flow characteristics under boost.

The pro side is that when not under boost the rig would more surely pass emissions and driveablity expectations. Sometime's larger injectors introduce low RPM issues, which the aux "wet" approach avoids.


This option should be discussed with your tuner.

 

Maybe a "low compression in one cyl." kind of shake. With that statement right there, I think you honestly didn't do anything wrong on your drive home. Sounds like that motor was wounded when you picked it up.

Honestly in all my years owning Forced Inducted Cars, that is one of the most horrific holes I have seen.

Funny thing is that it doesn't look like a just a lean issue. There is a hole BLOWN out of the side of the piston. That usually means there was WAY to much timming in the motor. Are you sure you tuner wasn't using a ECM that had an advanced timing map. I don't to step on any toes but I am sure that Techno Square advances the timing a little. I hope one of those computers wasn't used with the blower.

If your computer was touch at all, I think I found your issue. No need for an injector flow test.

I can't wait to see the end turn out still. It's going to be intresting to see how just ONE piston can have such major issues.

EA

 

ravaz:

you seem to be such a nice guy. Maybe your approach will get better results than my methods of dealing with these guys but I cannot help but think the tuner blew your motor up on the dyno. My brother told me of a story of a tech blowing up a brand new Z on a dyno at the Nissan dealer because it was not cooled properly.

If it was running poorly when you picked it up, it is a VERY good chance they did it prior to you touching the car. IMHO, I think you should have pushed for a new motor either back to stock (That would have been my choice) or a new motor with an ATI SC installed properly.

The route you are going is uncharted territory for a VQ35. These tuners could not make a VQ run correctly with a SC kit that many car owners are self install successfully. Now, they are using ATI SC at different boost, low compression pistons, new internals, and have to calculate tuning to all those varibles. Greddy cant do it after having their car together for months and they are a well respected FI specialist. I think you are heading for more trouble but this time you will not have a "leg to stand on" legally because you are having them do mods that are experimental at best.

I am worried about you. Please take these concerns as a fellow Z owner sadden to read about your experiences. I know it could happen to any of us. I am not flaming you, just worried about the outcome.

Jeff