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How much timing under boost?

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Old Dec 12, 2009 | 06:24 AM
  #41  
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Originally Posted by ReV2Red
You didn't read my post properly then, because i am describing three different levels of knock/detonation, just as you said. I've read that artical on wikipedia before, and i've also done some other research on my own. My source comes from 2 pro tuners, one of which is a retired tuner for the subaru world rally team, plus a couple of books on tuning.
Yes the article on wikipedia, along with a few other people say it's not the same, but then other people will say it is the same, so who do you believe? I've just done some research and come to my own conclusion.
So yes. Everyone has their opinion, wether you and half the world think so or not.
http://www.misterfixit.com/deton.htm

http://www.streetrodstuff.com/Articl...ne/Detonation/

http://www.hrd-performance.com/13.html

http://www.dsmtuners.com/forums/tuni...etonation.html

http://www.rockettbrand.com/techsupp...reIgnition.pdf

http://www.foxvalleykart.com/fuel3.html

http://www.enginebuildermag.com/Arti...eignition.aspx

All those links say that pre-ignition and detonation are two separate, unrelated events. Show me all your sources that say they are the same thing.

Detonation is basically compression ignition

Pre-ignition is ignition caused by a hot spot possibly the actual spark plug, not it's spark

TWO DIFFERENT THINGS. You need to check your "sources" again.
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Old Dec 12, 2009 | 06:31 AM
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Fine, whatever. We're going off topic so i'm just going to shut up.
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Old Dec 12, 2009 | 07:25 AM
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Originally Posted by ReV2Red
Fine, whatever. We're going off topic so i'm just going to shut up.
That's what I thought....
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Old Dec 12, 2009 | 03:52 PM
  #44  
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Ahh jeez.
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Old Dec 12, 2009 | 10:04 PM
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Swinke, its a little hard tuning timing with the emanage blue because it does not log timing input (the EU does). So the solution would be to log your timing via another system such as an OBDII scanner, then once you know what timing your ECU is putting out, you can then subtract. I have asked and tried to research the same question as you, and realized it was not as easy as I thought, but in general I always found that 15-17degree's of timing was pretty common. Ofcourse you cant take my word for it as to every setup is different and MANY factors are taken into account, but it is what I got from my research and wanted to share it with you.

Originally Posted by MardiGrasMax
Hal didn't you used to tune your Maxima on the street, not the dyno We all have to start some where, certainly you've progressed well past that. Guys like this could possibly tune their cars, possibly blow it up, but good for them for trying. You've got to blow up one or two to figure it our, right? For sure with out using the dyno he will more than likely leave some power on the table.

I do find that in the 350Z world or maybe just on this forum that their is a very odd propensity for beginners to be quickly directed to a shop, rather than encouraged to try it themselves and give the information they request. Perhaps this is the capitalistic marketing machine in action? The Nissan stuff is not any more complex than Honda or Chevy, its just fuel and air, metal and oil.

I salute the DIY folks who have the guts, to try it. It takes an investment of time and determination to get the skill set to work on cars at this level. Some folks don't have the time, don't have the location, or they just have enough money to not care, shops are good for these folks. For some of the folks who start off DIY it turns in to a lifetime career, but they to started out DIY for a time...
It might be due more because of the money. In general maxima guys for example (specially 4th gen and 3rd gen guys) dont have the kind of money to buy a Z and send it off to a shop for a $15k build while not even having the knowledge on how to change oil on the car. Which is why us the less fortunate ($), experiment and do the work ourselves. When I started driving my car i didnt even know you had to change oil (i was that ignorant), and now I have a built VQ35 swapped with a rear mount turbo(custom by me), all with my own hands, a backyard and not a single mechanic or tuner has ever seen my car, ever.

btw, I wanna thank you both Mardi and Hal for doing what you did in the maxima world, its what inspired me to do everything iv done on my maxima.

Last edited by streetzlegend; Dec 12, 2009 at 10:06 PM.
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Old Dec 14, 2009 | 05:50 AM
  #46  
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Originally Posted by BriGuyMax

All those links say that pre-ignition and detonation are two separate, unrelated events. Show me all your sources that say they are the same thing.

Detonation is basically compression ignition

Pre-ignition is ignition caused by a hot spot possibly the actual spark plug, not it's spark

TWO DIFFERENT THINGS. You need to check your "sources" again.
++ 11000% correct. They are totally different. Some people try to be fancy with defining Knock, pinging and Detonation which in the real world they all mean the same thing. Either way they are not good so they should not be taken lightly. If you can hear pinging/knock on the street then you are in trouble. So be careful tuning your timing on the street.

Last edited by athenG; Dec 14, 2009 at 05:53 AM.
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Old Dec 14, 2009 | 06:29 AM
  #47  
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Originally Posted by swinke
This is disappointing. If you search the Civic forums for "timing boost" they all seem to have some idea of whats normal and whats unsafe and they publish the numbers. The Civic guys must do more actual tuning on their own cars? The shop owners on this forum say "take it in for dyno" and know one else has an answer? What are the boosted bunch running for timing on 350z's? Thousands of members in this forum, hundreds of tuned FI 350's and nobody knows what their timing is set at? This is a very simple question.
the VQ is not a B16. I beat the hell out of a stock block accord(F22) with a T3/T4 @ 20psi in the early 90s. You can't do that on the stock block Z. These engines are sensitive to the slightest change and unlike a honda, you can't boost em with a half *** tune for very long.

Another thing to consider is that alot of us run the HKS VPRO..this ems only allows HKS authorized tuners to tune with this software, no end user tuner capabilities. So some of us don't know what are timing is set to for a specific amount of boost. I don't feel bad when I blow up a fully built B18 cuz I only have $2400 in the build...blow up a VQ you have 15k in the motor and it hurts quite a bit more. Hell, the turbo kits for the Z are more than double and triple the turbo kits on the civics. Can't really come in here and compare apples to oranges...and like all the other tuners are telling you, every car is different. The more sensitive they are to changes the more this is true.
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Old Dec 14, 2009 | 12:39 PM
  #48  
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Originally Posted by streetzlegend

btw, I wanna thank you both Mardi and Hal for doing what you did in the maxima world, its what inspired me to do everything iv done on my maxima.

Also want to make a correction...


Originally Posted by Old School
the VQ35 is not a B16. I beat the hell out of a stock block accord(F22) with a T3/T4 @ 20psi in the early 90s. You can't do that on the stock block Z. These engines are sensitive to the slightest change and unlike a honda, you can't boost em with a half *** tune for very long.

Another thing to consider is that alot of us run the HKS VPRO..this ems only allows HKS authorized tuners to tune with this software, no end user tuner capabilities. So some of us don't know what are timing is set to for a specific amount of boost. I don't feel bad when I blow up a fully built B18 cuz I only have $2400 in the build...blow up a VQ35 you have 15k in the motor and it hurts quite a bit more. Hell, the turbo kits for the Z are more than double and triple the turbo kits on the civics. Can't really come in here and compare apples to oranges...and like all the other tuners are telling you, every car is different. The more sensitive they are to changes the more this is true.
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Old Dec 14, 2009 | 01:02 PM
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Originally Posted by boostedmaxima

Also want to make a correction...
Agree'd VQ35 is alot more sensitive than our VQ30's which you can abuse like hell. Not even the rod's give up, its usually just ring lands that give first. Look how much power Hal and Marigra used to make on the vq30's back in the day.
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Old Dec 16, 2009 | 06:17 PM
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I got $50 that says the engine blows up when it merely sees the emange being installed
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Old Dec 16, 2009 | 06:27 PM
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Originally Posted by UMW350Z
I got $50 that says the engine blows up when it merely sees the emange being installed
Nothing wrong with the Emanage if you know how to use it. Its usually user error when a motor tuned via Emanage blows.
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Old Dec 16, 2009 | 06:45 PM
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Originally Posted by streetzlegend
Nothing wrong with the Emanage if you know how to use it. Its usually user error when a motor tuned via Emanage blows.
are you saying you know someone running one successfully on a VQ?
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Old Dec 16, 2009 | 06:52 PM
  #53  
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Originally Posted by UMW350Z
are you saying you know someone running one successfully on a VQ?
umm... yes. Mysef!

I had the Emanage Blue for a good 3 years or so on my VQ30 turbocharged for those 3 years along with nitrous. Now I have a VQ35 and using the Emanage Ultimate. Ofcourse you have a **** load of more flexibility with standalone and other systems, but just because an emanage is a simple system and a piggyback it dosnt mean its crap. If you really know how to use it, there will be no issues, as long as you got timing, a/f, and knocking on check.

Last edited by streetzlegend; Dec 16, 2009 at 06:54 PM.
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Old Dec 16, 2009 | 06:55 PM
  #54  
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Originally Posted by streetzlegend
Agree'd VQ35 is alot more sensitive than our VQ30's which you can abuse like hell. Not even the rod's give up, its usually just ring lands that give first. Look how much power Hal and Marigra used to make on the vq30's back in the day.
I don't know if I'd necessarily agree. Nealoc187 and I together have blown up 4 VQ30s... we both have VQ35s now and neither of us has blown up a VQ35. Sure the rods don't go on the VQ30, but I don't think the motor overall is any more resistant to crappy tunes than the VQ35.

I've run A LOT more power through the VQ35 than I ever ran through the VQ30.
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Old Dec 16, 2009 | 06:59 PM
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Originally Posted by streetzlegend
umm... yes. Mysef!

I had the Emanage Blue for a good 3 years or so on my VQ30 turbocharged for those 3 years along with nitrous. Now I have a VQ35 and using the Emanage Ultimate. Ofcourse you have a **** load of more flexibility with standalone and other systems, but just because an emanage is a simple system and a piggyback it dosnt mean its crap. If you really know how to use it, there will be no issues, as long as you got timing, a/f, and knocking on check.
what FI system and what power?
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Old Dec 16, 2009 | 07:00 PM
  #56  
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^an oldy but goody
https://my350z.com/forum/forced-indu...anna-join.html

seemed to work just fine back in the day with 'the net result was on a dyndynamic was 621whp/604trq at 16.5psi of boost pressure and 100 octane fuel.'

Thats very solid power. guys are struggling to make that with multiple fails today almost 5 years later

Last edited by str8dum1; Dec 16, 2009 at 07:05 PM.
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Old Dec 16, 2009 | 07:02 PM
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Originally Posted by UMW350Z
are you saying you know someone running one successfully on a VQ?
The emanage only got a crappy shake in this community because Greddy supplied it with their TT kit WITHOUT a timing harness.

STOCK TIMING + any decent amount of boost on a VQ = BOOM.
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Old Dec 16, 2009 | 07:05 PM
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Originally Posted by BriGuyMax
The emanage only got a crappy shake in this community because Greddy supplied it with their TT kit WITHOUT a timing harness.

STOCK TIMING + any decent amount of boost on a VQ = BOOM.
i see, this guy was talking about the emange blue, is this without the timing harness?
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Old Dec 16, 2009 | 07:06 PM
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Originally Posted by BriGuyMax
I don't know if I'd necessarily agree. Nealoc187 and I together have blown up 4 VQ30s... we both have VQ35s now and neither of us has blown up a VQ35. Sure the rods don't go on the VQ30, but I don't think the motor overall is any more resistant to crappy tunes than the VQ35.

I've run A LOT more power through the VQ35 than I ever ran through the VQ30.
Well neal has been beating on 3.0's for a long time im sure u know since ur closer to him. the whole vq30 vs. vq35 and reliability with boost has always been a good topic of discussion on the maxima forum, I personally know guys that have pushed the vq30 hard, along with myself. but I have also seen alot of 3.5's fail, now it could be because there are more turbo 3.5s therefore the are higher probabilities of a failed 3.5 than 3.0. But as for my experience, I'd go for a stock vq30 over a stock vq35, just look at how much power Hal used to make, up in the 500'hp and 600wtq (but he did also go through a few motors lol, but he was pushing it to extreme's )
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Old Dec 16, 2009 | 07:07 PM
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Originally Posted by UMW350Z
i see, this guy was talking about the emange blue, is this without the timing harness?
Yes, the original emanage blue shipped with the greddy kit EXCLUDED a timing harness, so it didn't matter how "good" the rest of the engine management was, without timing control, you're going to blow stuff up.

The emanage blue with a timing harness is a perfectly capable piggyback.
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