I see a lot of posts about knock, and how even a single count could destroy these engines. Knock seems to be a real big deal here. On other forums, especially forums for cars with FI, knock is no huge problem. When they tune their cars, they intentionally tune it to have a little knock, because with none, the engine is not putting out maximum power. About 5-10 counts seems to be considered good. If it's less than 40, it's not considered to be a problem. I know cars with factory turbo have stronger internals, but is it that much stronger? How come our engines are so much more vulnerable?

 

I can sympathize here as well. I have only been able to get a 150 shot of nitrous out of my engine witht he ability to run a 12.1 1/4 mile.

Should be able to get 9's if I can just lean how to tune it properly, isn't that what they say on the F&F and thats reality isn't it?

What the h$ll were Nissan thinking when they built this puny engine? They must have known that people were going to stress it a little over stock didn't they?

The transission is even weaker, can you believe that I can only get a 1.7 60' with this stinkin stock automatic? What were they thinkin?

 

Remember whos engine is on the top 10 best v6 engines list over and over again

 

its not a big deal, i've never heard of anyone having only a little knock and blowing their motors. many people do have problems with the knock sensor, but thats a different subject

 

its not a big deal, i've never heard of anyone having only a little knock and blowing their motors. many people do have problems with the knock sensor, but thats a different subject

 

9's???? Sorry charlie... You wont be seeing 9's on a maxima motor even boosted with NOS... You Better invest some serious $$$$ into something else...

 

"When they tune their cars, they intentionally tune it to have a little knock, because with none, the engine is not putting out maximum power."

Are you retarded? No modern engine is designed to have knock. In fact, that's where they put knock sensors on most modern cars with variable ignition timing, or valve lift/timing, or ignition/valve phasing.

Knock is not a problem on stock motors, only modified ones running programming for stock engines. And you can't blame the engine for that.

These blown engines you are talking about are engines with boost on engines not designed for boost, with programming not setup for boost. What do you expect? Go check out any other forum where people are turbocharging engines that come NA from factory, and see if they have problems with knock.

It's not that our engines are vulnerable. They are just tuned to extract a higher amount of output with a smaller margin of error. If you don't like that, go get an American iron block push rod engine running 8:1 compression.

 

Do you know who you're talking to? Jime has run a 12.1. He runs a mid 13 on a 50 shot.

Correction, Jime has now run a 13.1 on a 35 shot. So Morfeus. You tell me if 9's are possible now.

No one's saying it's easy, but Jime was making *****in' fast numbers without spending very much money at all.

 

Boost induced knock is different than na engine knock.

 

could u give us an example of what other engines u are comparing to so we can understanding why the VQ is "weak". I am unbias about other opinions only if u can give us some insites to why our motors weak. Me, personally I didn't like Nissan in the beginning cuz it seemed to me that it was proned to problems( sensors and misc. thing) I figure with the knock issue the motor is respective tuned to its specs, any hard altercation will always change the way it will run, u just have to retune it. just mah 2$...sorry..ran out of sense.

 

If I'm not mistaken, I believe Jime was being sarcastic in his post

 

Sin... I dont care if he uses 500shot and gun-powder for Fuel!!! He is not seeing 9's... Like I said he need to buy a skyline, supra, or RX-7 (RWD)... Then work the **** out of the motor.... It takes alot to see 9's in quater mile... If you put power into a vq30det to get 9's... The motor will blow!!! And to produce that you need to be pushing over 700hp+... And the Maxima motor will not handle it.... And I'm sure NOS alone won't help him....

 

Hi Sarcasm? I'd like to introduce you to Morfeus17, you two have obviously not met...

Eric425: What your referring to about a few counts of knock and under 40 a lot like what DSM guys use when tuning their cars. The reason we see a few counts of knock is not because were tuning that way, but because were trying to get the most ignition advance possible for the best HP. Say 25deg of advance at WOT around 7500 rpm will yield a whole lot more HP than 18det of timing. To get that type of advance you always see a few counts of knock, it won't hurt the motor at all and makes great power. So really were not tuning for 5-10 counts of knock but the best ignition timing possible (22-25deg) which always comes along with some knock.

40 counts is a lot and is getting close to blowing up a motor. The funny thing about counts of knock is that only works this way on an OBD1 car. All Maximas from 95+ are all OBD2 so you can only read RAW knock count not a clear count as seen by the computer so going with the 5-10 and tops 40 theory will not be applicable to anybody with OBD2. Just ask anybody on here with a SAFC2 on their OBD2 equipped car.

The maxima engine has seen 500whp in stock from (from what I remember) and many over 350-400whp which is very much inline with a good factory turbo engine. You can not compare a Supra motor to any other car so strike that off your list entirely, they are in a completely different class all-together.

 

wow the power of sarcasm

Take it easy, he was only kidding. Its not the motors problem he wouldnt be able to run 9's. Its a combination of FWD and traction.

I'm more than sure a boosted and sprayed VQ put into a RWD platform would be able to push out enough power to run 9's. (with enough engine work to sustain a good 6-700 HP of course)

 

WOW!!! Some people on this forum just do not have any brains!! He was being sarcastic and mocking F&F and the person who started this thread. The maxima is known to have a very strong engine and it is known that it will never run 9's!!!

 

If you can't tell that he was being sarcasic in his post there's nothing any of us can do for you

 

Ohhh... My fault... I posted it after the fact... I thought he was really serious!

 

really? It was difficult to be more obvious.

 

Man, there's a lot of ********s here. I was just asking a question, and got jumped on. No need to get so defensive. I was talking about the Vr4/stealth and dsm forums I've been to at 3si.org and dsmtuners.com. And the fastest of these cars are much, much faster than any maxima, even the 12.1 nitrous.
Sin, I wasn't saying the car was designed from the factory to have knock, just that the engines can take it. Almost all the tuning threads have the guys trying to get the engine down to an acceptable amount of knock, 15 or so seems to be average. Leaning it out and advancing timing as much as possible to get the most power out of the engine, without blowing it up. In the FAQ here, it says not to run lower octane because there will be at least 1 knock before the knock sensor picks it up. Comparing it to 3si/dsm, the tuning guide tells a little knock is expected, and no big deal. Is knock so hard on the VQ when the others can handle it?

 

wow

 

Looks like more of a to me

 

You some how missed my post above? It has the information in it you asked for.

Sort of.. On DSMTuners, 12.1 puts Jime at #42 of 141 peopel who have posted their time slips, still pretty good.

12.1 on any car is very impressive even to a DSM guy such as myself (who is used to speaking with other DSM owners running 8's, John SHeppard, and 9's Marco Passante from Magnus) so respect should be given where respect is due my friend.

 

LOL, I know Marco Passante. His shop did a 3" exhaust for my old car. His buddy Geof Chan has a SERIOUS car. I love it. It's a T-78 RX-7. SO Dirty.

 

Eric, sorry no one was jumping on you, you did have a legitimate question. I was just being sarcastic because people put down the Maxima for no reason and I was just supporting the cause.

We are in a somewhat different league and we do got defensive at times when someone suggest we have a weakness with our engines and transmissions.

On the other had I feel we have an excellent engine and transmision (auto or man) and defend it to the death.

 

I love it when newbies come aboard and attempt to shoot down the veterans (of course unknown to the newbie) it really makes for a LOL thread.

 

How does the VQ compare to the compitition, Honda accord V6, MItsu galant GTZ, camry V6, Mazda 626 or the milenium, VW Passat, and i don't really want to mention the domestics...not worth it. any opinions on this class?

 

http://subscribers.wardsauto.com/Mic...=1004&srtype=1

 

Yeah, I got your post. That was helpful, thanks. And yes, 12.1 is very fast, especially for this class of car. And FWD. I looked at the DSMtimes.org list, and the fastest seems to be a 7.7 @ 174 mph by Garcia. That's very, very fast.
Basically, I was asking about the engine because I wanted to know how bad it is to replace the KS with a 470k resistor altogether. The chances of knock would be raised pretty significantly, and if the cumulative effects would wear the engine prematurely? Or could the engine just handle a little knock without problems like the DSM's and VR4's seem to do? I know they're not in the same league, a VR4 and a maxima definitely weren't designed to compete with each other in the consumer market. But can the difference be so big that some knock occuring in the maxima would destroy it, and the same amount of knock in a dsm or vr4/stealth would have little or no effect?

 

I'd actually like to know about the resistor as well?? I need to replace my knock sensor however money is currently tight and soldering on an apropriate resistor would be nice for a temp fix.

 

concerning the original post, people post about knock sensors all the time because they think they can fool the sensor to get more power or they hope/think they have a bad knock sensor and there is unused power available. It's not about thinking the engine is gonna blow because of it.

One newbie reads a post from another newbie that a bad knock sensor will rob 50hp. Then he decides to start a thread about his knock sensor hoping he can replaces it and his car will be suddenly fast. That is how I see most of the knock sensor posts.

 

"It is possible that using low grade gas may not cause any problems, but remember it does not take that many detonations to break your engine. "

I saw that in the MaxFAQ. It sounds like it doesn't take much knock to break the VQ32de, and is a cause for concern. Running 87, or bypassing and using premium, would it really destroy the VQ when the 4g63's can handle some amounts of knock with no effect?

 

Who has a VQ32??

 

I don't know if you can push 9.sec out of vq30, but if someone does i like to see it in action.

But here is a example of 9.68 sec supra.
http://www.bullishmotorracing.com/video/video12.wmv
http://www.bullishmotorracing.com/video/video8.wmv
Bullish Supra: In car view
http://www.bullishmotorracing.com/video/video6.wmv

 

Hey guys you wonna see a max run 9s, start a fund under my name, lol

Oh yeah **** when you run 10 psi, 100 shot of nos on the stock internals and try to tell me that the car has weak motor you should go shoot yourself.

 

it doesn't matter if we drive a maxima or civic. all engine component will stop working at a certain extent, therefore that's what maintance is for. eventually the engine will wear down and die. it applys on ALL car, not just maxima. yes our VQ engine is great, but it is still an engine. knock sensor, O2 sensor, all these other sensors will become malfuntional.

that's just the reality. accept it and deal with it.

 

another reality check for guys:

nissan maxima is a FWD family sedan with 3,000lbs+. a FWD 3,000lb vihecle will NEVER become a TRUE sportscar, period. sure our car is fast (faster than accord and camry), but that doesn't make our car a sportscar. we are in different class. sure money can make anything happen, you can drop 100G and do engine swap, turbo, nitrous , but do you think it's worth it on a maxima? logically, no. okie fine you drop all these money into power, how about handling? okie let's not even go there...

let's face it guys. i only see skylines, evos, supras, m3s, Zs, nsx etc. in the real sportscar competition. just enjoy our "superfast" 4door sports sedan on the street, and be realistic about it.

 

This is such a waste of a post. There's vids of the Titan Supra running 8.9, but nobody cares. Wow, how about we compare a 426 Hemi to the VQ now, that seems fair.

Something must be VERY weak with the VQ. You should try talking to hlh0501, he can tell you how crappy the VQ30DE really was. We should all upgrade to Geo Metros.

LEMAR

 

yeap. i say just go back and fix the knock sensor (and whatever else is broken), enjoy the great gas mileage and that 10+whp from optimized ignition mappin.

 

VQ30DE is legendary engine, I am happy with my car. Nothing can beat the Dodge neon block .

 

Not in my wildest dreams would I consider the VQ-series a weak motor. It was built for NA performance, but it can easily handle an induced 400fwhp/400fwtq with the right tuning and let's not to mention all the guys pushing 280-350fwhp. Take a look at a torn down VQ and you'll see nothing but over engineering. My favorite is the 4-bolt CAGED mains. There are hardly any V6-V8 motors around that have both 4-bolt mains and a cage. Talk about sweet overkill. Remember that this motor was designed for endurance racing and it shows. These motors a dead reliable. I've never heard of anyone having a knock related failure other than those turbo guys who didn't tune their air/fuel ratios right. It's thier fault, not the VQ's. Not even a turbo-designed engine can stand up to a bad air/fuel ratio.


Dave