EiGhT blown 350Z motors on boost!
12-22-2003, 12:37 PM
#81
Suzuka Master
Join Date: Sep 2000
Location: Woodstock, GA
Age: 54
Posts: 9,431
Likes: 0
Received 0 Likes
on
0 Posts
There are far too many failures occurring without proper insight as to why. The finger pointing at ATI may be convenient but IMO, the energy should be directed else where. Efforts should be made to determine the actual cause of the failure; not just speculation.
The ATI kit is hardly different than others. There is a compressor which moves air and a rising rate FPR to increase fuel pressure under boost. The spark remains under factory control. This is pretty simple and there does not appear to be a finite differentiator of the ATI kit versus others. Now that there is a failure with the Greddy TT kit, that sheds light to other possibilities.
I am really curious if it is a lean condition or just too much timing. Knowing this would help significantly in solving the problem and help future installers.
The ATI kit is hardly different than others. There is a compressor which moves air and a rising rate FPR to increase fuel pressure under boost. The spark remains under factory control. This is pretty simple and there does not appear to be a finite differentiator of the ATI kit versus others. Now that there is a failure with the Greddy TT kit, that sheds light to other possibilities.
I am really curious if it is a lean condition or just too much timing. Knowing this would help significantly in solving the problem and help future installers.
12-22-2003, 12:39 PM
#82
Banned
Thread Starter
Join Date: Dec 2003
Location: midwest
Age: 45
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by ronnie0738
Okay, before I get started I just want to say I'm not saying all 350Z with FI are going to blow, but this is just more proof that even with tuning FI on the Z can be risky.
I was just looking through my350z.com and someone blew another 350Z motor, but with the Greddy Turbo kit this time(username=TheFuture). Ran it out of the box with profec boost control, 5.5-7psi, tuned, and blew it in 5 days! He doesnt know exactly what happened, but he thinks the rods broke. He's stripping the engine and going to find out soon.
With the Greddy TT at 5.5psi, he was putting out 345hp/331tq & at 7psi 375hp/350 w/ no cats & borla dual exhaust. Too bad his motor started detonating.
http://www.my350z.com/forum/showthre...threadid=54041
Okay, before I get started I just want to say I'm not saying all 350Z with FI are going to blow, but this is just more proof that even with tuning FI on the Z can be risky.
I was just looking through my350z.com and someone blew another 350Z motor, but with the Greddy Turbo kit this time(username=TheFuture). Ran it out of the box with profec boost control, 5.5-7psi, tuned, and blew it in 5 days! He doesnt know exactly what happened, but he thinks the rods broke. He's stripping the engine and going to find out soon.
With the Greddy TT at 5.5psi, he was putting out 345hp/331tq & at 7psi 375hp/350 w/ no cats & borla dual exhaust. Too bad his motor started detonating.
http://www.my350z.com/forum/showthre...threadid=54041
told you it was WAY too early to say that all the other units won't have non tunning related problems!. The greddy unit was released last week, and we already have a casualty? Scary stuff indeed!
12-22-2003, 12:42 PM
#83
teh Senior Instigator
Join Date: Sep 2000
Location: Huntington Beach, CA -> Ashburn, VA -> Raleigh, NC -> Walnut Creek, CA
Age: 42
Posts: 44,094
Received 976 Likes
on
330 Posts
Originally posted by scalbert
I am really curious if it is a lean condition or just too much timing. Knowing this would help significantly in solving the problem and help future installers.
I am really curious if it is a lean condition or just too much timing. Knowing this would help significantly in solving the problem and help future installers.
Just for reference, my buddy had one go on the dyno after he installed it. He is a very very good mechanic, (ran the R&D at AEM for a little while). He said that the A/F ratio was perfect when theirs let go. He said they weren't even at WOT.
12-22-2003, 12:43 PM
#84
teh Senior Instigator
Join Date: Sep 2000
Location: Huntington Beach, CA -> Ashburn, VA -> Raleigh, NC -> Walnut Creek, CA
Age: 42
Posts: 44,094
Received 976 Likes
on
330 Posts
I don't see how anyone can possibly think they can just plug in and play w/ a FI kit. All cars are different, they should all be getting tuned 
12-22-2003, 12:48 PM
#85
Bagged hybrid
This guy I posted about had it tuned on the dyno and has a/f ratio records but has not posted them yet. We'll have to see what they find when they tear apart the motor.
12-22-2003, 12:53 PM
#87
Suzuka Master
Join Date: Sep 2000
Location: Woodstock, GA
Age: 54
Posts: 9,431
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by CLpower
Just for reference, my buddy had one go on the dyno after he installed it. He is a very very good mechanic, (ran the R&D at AEM for a little while). He said that the A/F ratio was perfect when theirs let go. He said they weren't even at WOT.
Just for reference, my buddy had one go on the dyno after he installed it. He is a very very good mechanic, (ran the R&D at AEM for a little while). He said that the A/F ratio was perfect when theirs let go. He said they weren't even at WOT.
That, or there are many weak motors being shipped.
12-22-2003, 01:36 PM
#89
Originally posted by goat
ZERODAY, ARE YOU READING THIS?
told you it was WAY too early to say that all the other units won't have non tunning related problems!. The greddy unit was released last week, and we already have a casualty? Scary stuff indeed!
ZERODAY, ARE YOU READING THIS?
told you it was WAY too early to say that all the other units won't have non tunning related problems!. The greddy unit was released last week, and we already have a casualty? Scary stuff indeed!
12-22-2003, 03:39 PM
#92
Originally posted by zeroday
Buddy, you need to chill the fuck out. I don't think even you know what you are arguing. You are retorting things I didn't even say. I NEVER said there was any guarantee the VQ will be amiable to FI. What I DID say is that your first post needed to be qualified further to point out these problems were only on the ATI so far. Which WAS a true statement. I was criticizing your logic you dumbass. There is still no proof the VQ can't handle FI although it actually seems like you WANT it to fail for some strange reason based on the tone of your posts. What vested interest do you have in this topic anyway? Do you have an FI Acura? Do you have a VQ35? Admit you're just being a an Acura fanboy that has nothing better to do than rip on other makes. Pretty :ghey:.
Buddy, you need to chill the fuck out. I don't think even you know what you are arguing. You are retorting things I didn't even say. I NEVER said there was any guarantee the VQ will be amiable to FI. What I DID say is that your first post needed to be qualified further to point out these problems were only on the ATI so far. Which WAS a true statement. I was criticizing your logic you dumbass. There is still no proof the VQ can't handle FI although it actually seems like you WANT it to fail for some strange reason based on the tone of your posts. What vested interest do you have in this topic anyway? Do you have an FI Acura? Do you have a VQ35? Admit you're just being a an Acura fanboy that has nothing better to do than rip on other makes. Pretty :ghey:.
12-22-2003, 03:45 PM
#93
Bagged hybrid
this guy is having the motor taken apart today, we will know soon enough what exactly happened. for all we know right now, it could be all 
b/c he hasnt posted any pics of the car, dyno graphs, etc.
b/c he hasnt posted any pics of the car, dyno graphs, etc.
12-22-2003, 03:47 PM
#94
Administrator Alumnus
Originally posted by zeroday
OK I was in a really bad mood when I wrote this. I'm going to do something i almost never do and apologize for my name calling etc. just got frustrated. having a bad day.
OK I was in a really bad mood when I wrote this. I'm going to do something i almost never do and apologize for my name calling etc. just got frustrated. having a bad day.
12-22-2003, 03:53 PM
#95
Senior Moderator
Originally posted by fahoumh
soooo....anyone know the cause(s) for the engine blowings?
soooo....anyone know the cause(s) for the engine blowings?
- forced induction dynamics
- the stock internal build of the VQ35DE
- stock CR
- tuning competence
My question is, have any other high CR motor types (i.e.: VQ35, J32A, B18C5, etc,...) had as many issues in dealing with FI as the VQ35 appears to have??
12-22-2003, 04:58 PM
#96
still a Masshole
Originally posted by zeroday
OK I was in a really bad mood when I wrote this. I'm going to do something i almost never do and apologize for my name calling etc. just got frustrated. having a bad day.
OK I was in a really bad mood when I wrote this. I'm going to do something i almost never do and apologize for my name calling etc. just got frustrated. having a bad day.
12-22-2003, 07:50 PM
#99
Safety Car
Man... I ran my motor hard, making upwards of 350whp and then NA running it to 7400rpm... still doesn't burn any oil.
Actually I shouldn't jinx myself... look at my freaking clutch!
Actually I shouldn't jinx myself... look at my freaking clutch!
12-22-2003, 09:27 PM
#100
Full-Time IDIoT---DoH!!!
Join Date: Jan 2002
Location: DUMB ISLAND
Age: 42
Posts: 4,654
Likes: 0
Received 16 Likes
on
10 Posts
Originally posted by lou
so which is better for FI the Acura V6 or the Nissan V6??
I gotta admit Im a acura fan so Imma gonna say acura
so which is better for FI the Acura V6 or the Nissan V6??
I gotta admit Im a acura fan so Imma gonna say acura
12-22-2003, 09:35 PM
#101
Originally posted by ferizzo
I didn't think you needed to apologize. I think some people want bad things to happen to other cars, which makes no sense to me! I thought goat was pushing your buttons.
I didn't think you needed to apologize. I think some people want bad things to happen to other cars, which makes no sense to me! I thought goat was pushing your buttons.
12-23-2003, 06:00 AM
#102
Suzuka Master
Join Date: Sep 2000
Location: Woodstock, GA
Age: 54
Posts: 9,431
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by lou
so which is better for FI the Acura V6 or the Nissan V6??
so which is better for FI the Acura V6 or the Nissan V6??
I am curious if the airflow is being registered incorrectly and timing is being inappropriately advanced. Just a thought...
12-23-2003, 06:07 AM
#103
Suzuka Master
Join Date: Sep 2000
Location: Woodstock, GA
Age: 54
Posts: 9,431
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by F23A4
My question is, have any other high CR motor types (i.e.: VQ35, J32A, B18C5, etc,...) had as many issues in dealing with FI as the VQ35 appears to have??
My question is, have any other high CR motor types (i.e.: VQ35, J32A, B18C5, etc,...) had as many issues in dealing with FI as the VQ35 appears to have??
We are starting low and working our way up slowly and cautiously. With the integration of the IC, e-Manage and Wide Band tuning we should be able to hit that 8 PSI intercooled boost safely and be making 375 WHP.
12-23-2003, 07:22 AM
#104
maxima troll :)
Join Date: Aug 2002
Location: NC
Posts: 184
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by lou
so which is better for FI the Acura V6 or the Nissan V6??
I gotta admit Im a acura fan so Imma gonna say acura
so which is better for FI the Acura V6 or the Nissan V6??
I gotta admit Im a acura fan so Imma gonna say acura
I like them both but I like all car makes and models.
12-23-2003, 07:58 AM
#106
Lots of JDM parts on my
Join Date: Mar 2001
Location: San Jose fo' life!!!!
Age: 49
Posts: 2,351
Likes: 0
Received 4 Likes
on
4 Posts
Originally posted by JRock
Considering all the problems are found with one FI kit, clearly there's a problem with that kit.
Considering all the problems are found with one FI kit, clearly there's a problem with that kit.
)Another thing that I don't think has been mentioned. Nissan dealerships are supposedly going to start offering a supercharger option. An aftermarket s/c being sold through the dealership that is. I think the boost level is going to be around 5 psi. Damn, I can't remember the company name. The s/c will come with a 3yr/36000 mile warranty too from the manufacturer that will cover any engine problems. I just wonder what will make their kit safer? The lower boost level? It will be interesting to see.
12-23-2003, 09:55 AM
#108
still a Masshole
Yeah, Stillen or Nismo. I think Nismo is to Nissan as TRD is to Toyota and Comptech should be to Honda.
I agree that there are many more forced feed Nissans than there are Hondas/Acuras. Both engines have been proven to handle them pretty well until this recent batch of blown (bad) VQs. But as stated before this can be attributed to bad tuning and more specifically to ATI at this point.
I agree that there are many more forced feed Nissans than there are Hondas/Acuras. Both engines have been proven to handle them pretty well until this recent batch of blown (bad) VQs. But as stated before this can be attributed to bad tuning and more specifically to ATI at this point.
12-23-2003, 10:14 AM
#109
Lots of JDM parts on my
Join Date: Mar 2001
Location: San Jose fo' life!!!!
Age: 49
Posts: 2,351
Likes: 0
Received 4 Likes
on
4 Posts
Originally posted by ferizzo
Yeah, Stillen or Nismo.
Yeah, Stillen or Nismo.
12-23-2003, 10:38 AM
#110
maxima troll :)
Join Date: Aug 2002
Location: NC
Posts: 184
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by ferizzo
Yeah, Stillen or Nismo. I think Nismo is to Nissan as TRD is to Toyota and Comptech should be to Honda.
I agree that there are many more forced feed Nissans than there are Hondas/Acuras. Both engines have been proven to handle them pretty well until this recent batch of blown (bad) VQs. But as stated before this can be attributed to bad tuning and more specifically to ATI at this point.
Yeah, Stillen or Nismo. I think Nismo is to Nissan as TRD is to Toyota and Comptech should be to Honda.
I agree that there are many more forced feed Nissans than there are Hondas/Acuras. Both engines have been proven to handle them pretty well until this recent batch of blown (bad) VQs. But as stated before this can be attributed to bad tuning and more specifically to ATI at this point.
12-24-2003, 03:43 PM
#112
Join Date: Jan 2001
Location: Everywhere
Age: 46
Posts: 12,038
Likes: 0
Received 0 Likes
on
0 Posts
Man, that is low boost too. Engines blowing under 10lbs?
My opinion. I think that is why the GT-R is taking so long to come out. Clearly the AWD is ready (I.e G35 x sedan). But for the longest Nissan was going back and forth over the overated 4.5 V-8 or the 3.5 VQ. The VQ was chosen and I think they are blowing the engines left and right in R&D. Why else would they take so long? Every other car they have made has come out seemingly every month. The old 2.6 was indestructible like the 2JZ (both I-6). But emmisions killed these engines. The old 300ZX cannot attain close to the levels the I-6 2JZ does. Now we look at V-6 vs I-6.
The Acura engines are reliable, they can handle boost, just to the wrong wheels.
NISMO right now is only offering bodykits and suspension pieces in their S and R-tune forms.
My opinion. I think that is why the GT-R is taking so long to come out. Clearly the AWD is ready (I.e G35 x sedan). But for the longest Nissan was going back and forth over the overated 4.5 V-8 or the 3.5 VQ. The VQ was chosen and I think they are blowing the engines left and right in R&D. Why else would they take so long? Every other car they have made has come out seemingly every month. The old 2.6 was indestructible like the 2JZ (both I-6). But emmisions killed these engines. The old 300ZX cannot attain close to the levels the I-6 2JZ does. Now we look at V-6 vs I-6.
The Acura engines are reliable, they can handle boost, just to the wrong wheels.
NISMO right now is only offering bodykits and suspension pieces in their S and R-tune forms.
12-24-2003, 07:47 PM
#113
Suzuka Master
Join Date: Sep 2000
Location: Woodstock, GA
Age: 54
Posts: 9,431
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by 1SICKLEX
The Acura engines are reliable, they can handle boost, just to the wrong wheels.
The Acura engines are reliable, they can handle boost, just to the wrong wheels.
12-26-2003, 01:02 AM
#114
Subie Dubie
Originally posted by CiLver2.3
Yup. As soon as I hear more people w/o problems, rather than with problems, I will look into these options. To me, I think I can make my car quick enough N/A. (for now anyway )
Another thing that I don't think has been mentioned. Nissan dealerships are supposedly going to start offering a supercharger option. An aftermarket s/c being sold through the dealership that is. I think the boost level is going to be around 5 psi. Damn, I can't remember the company name. The s/c will come with a 3yr/36000 mile warranty too from the manufacturer that will cover any engine problems. I just wonder what will make their kit safer? The lower boost level? It will be interesting to see.
Yup. As soon as I hear more people w/o problems, rather than with problems, I will look into these options. To me, I think I can make my car quick enough N/A. (for now anyway
)Another thing that I don't think has been mentioned. Nissan dealerships are supposedly going to start offering a supercharger option. An aftermarket s/c being sold through the dealership that is. I think the boost level is going to be around 5 psi. Damn, I can't remember the company name. The s/c will come with a 3yr/36000 mile warranty too from the manufacturer that will cover any engine problems. I just wonder what will make their kit safer? The lower boost level? It will be interesting to see.
All of this makes me appreciate Comptech, they took their time in developing and didn't go crazy on boost, the SC power is solid and linear but so far, safe
Thread
Thread Starter
Forum
Replies
Last Post
rp_guy
Member Cars for Sale
9
07-16-2017 07:33 AM
xsilverhawkx
2G TL Problems & Fixes
5
09-28-2015 06:51 PM
