Well i am officially screwed. Car made 300 whp and 273tq on 10.5 psi. On the last pull though after we let of we heard a clicking sound come from the motor and the car was struggling to run. AFR was actually rich, but i think timming may have been a issue and detonation caused a rod bearing to fail. So now i have to decide if i want to keep the car, swap in a VQ 30, or a VQ 35

 

what? thats messed up man. Sorry to here that

 

damn manthat sux sorry to hear itkeepthe car and swapin a 3.5 I was there a few weeks ago,I just put mine back with anniversary edition motor andtranny.Good luck.

 

Were you spraying just water or a mix? Does your kit have a progressive controller? Do you know for a fact it was spraying?

 

I'll say it again:

"Boy I wish I had that problem..."

 

chris YGPM. let me know if I can help.

 

80% water/ 20% alcohol. I don't have the a activation light but i assumed it was working since i am only hitting 10 psi w/ a 2.87 pulley and i tight belt.

 

You were spraying NOS?

Did you detonate because your timing was to advanced? I'm getting an SMT-6 or thinking about it, I'm all motor, vq35 4th gen but don't want any motors blowin' on me.

 

Thats rough man...you have too nice of a car to just ditch it, I vote for a 3.5....but thats what everybody says...

 

what do you use for fuel management?

 

Sorry to hear about that man.

What was the milage on the motor and what is your fuel setup??

-matt

 

If you were getting bad enough detonaiton to damage the motor it would be evident in your dyno graph.

Sucks man.

 

Sorry to hear that man. Yeah I agree with Mike! Could we see a graph print out on the last run.

 

We are talking about water/alcohol spraying, not nitrous.

 

Did you get the ZDL workin? If so, what were the readings? I tried mine today and will be emailing zbigniew tomorrow.

Sucks chris.

 

i know this is offtopic, but i was wondering, for example if you are dynoing and you have a J & S safeguard, would the unit retard the timing to prevent the engine from detonation and blowing?

 

From what i understand the J&S retards timming when it sense detonation( which i really don't care for since it may be too late).

For fule management i am using Emanage w/ Power Enterprise 510cc injectors.

Slimer, no i didn't get the zeitronix working before the dyno. I figured since the car had been tuned to a very SAFE AFR of 11.5 w/ the water alch injection that i would be fine, but i guess not

 

Wow I've never heard of this before, does this enhance performance?

 

Guys i will post the dyno as soon as i get it from my freind. I was alittle pi$$ed yesterday so i forgot the disk and printout.

One more thing, we used a tail pipe sniffer since my WBO2 isn't working. We knew it wouldn't be accurate becuase of the cuttout, but we figured it would still give us somewhat of a reading. When we were dynoing the AFR showed a peak afr at redline of 11.9 or 12.0 (can't remember). I figure this reading would be leaner than the actual AFR becuase of air being introduced through the cuttout. Does this mean i was actually richer than this reading? If so would it be a significant amount?

BTW that cuttout is working, man that B!tch is loud as hell when it opens up. All those domestic guys came over and were like"damn that is a bad @ss sounding car man"

 

Oh NOOOOOOooooooooo!!!!!!

Did you pull the plugs yet? Also, go to Autozone or whatever and buy a compression tester Chris.

Did you ever figure out if you had one or two step colder plugs?

 

I wonder if it is what I was telling you about the other day and you actually leaned out at the top end, but did not know it because of the cut-off.

Very sorry to hear that, let me know if I can help with anything.

 

Not the spraying of the water/alky/methanol by itself, but what it does is prevent detonation so that you can run more timing (for more power) or more boost (for more power) without having to worry about detonation. Say for instance your car could only handle 10psi of boost with the stock timing before you started to get detonation. With water/alky/meth injection you might be able to handle 12psi of boost on the stock timing, thus making it possible for you to make more power on stock timing. Or you might run 10 psi and be able to advance your timing, making more power, or a combination of both, maybe 11psi AND advanced timing at the same time, etc.


Check out coolingmist.com, snowperformance.net, devilsownonline.com, etc.

 

That blows man!
Been there, done that, bought the T shirt twice.

I hope you have a beater you can drive.
Choary

 

He doesn't, which is a huge problem.

 

yep, otherwise i'd be like f$$$ it i'll just throw in a 3.5

 

If you're willing to put up with 1-2 weeks of downtime for the cams' back and forth shipping, go for the bigger nuts.

 

thats what i am leaning towards

 

sorry about the engine but in my opionion anyone with a heavily modded car that doesnt have a backup deserves what is ultimitly going to happen

 

deserves it my a$$, hell i paid a arm and a leg to get quality parts and a proffessional to tune my car

 

Are you saying you had a wide band sniffing at the muffler, but had your cut out open??? You do know that makes no sense right?

 

Chris,

I'd like you to EXPLAIN in detail how the day went, ie everything that the dyno operator did to how many runs and it what kind of time frame.

However, you NEED to pull your spark plugs and do a compression test before you start searching for a new engine.

 

I also don't think you need to worry about swaping in a $1K motor when you don't even know why you blew up in the first place. Too many mods and not knowing what is going on is a bad combo

 

Wow that's by far the dumbest most ridiculous comment I think I've EVER read. There are a ton of cars that are more than heavily modded that run flawlessly. So I take exotics and other high HP cars will uliTIMATELY die?

 

very informative and motivational post

 

No, he ment that it is not smart to have a heavily modded car without having a second car to drive incase something like this happens

 

Although a beater or dependable backup is a very wise choice, I wouldn't have put it that harshly.

 

I am also very interested in a detailed account, step by step of what happened. Not to discourage a VQ35, but I would triple check everything before deciding to spend a few grand on a new motor.

 

Well that sucks. How many miles was on your motor may I ask. Hope you get back on the road soon.

 

Yes i know it doesn't. They put the sniffer in before i told him about the cuttout. So he just left it there

 

Just a guess, but I doubt it was a timing issue. Your not running all that much boost on stock timing. Maybe enought to get some mild detonation, but I wouldn't think enought to damage the motor.