GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

whoa, almost blew up another motor

Thread Tools
 
Search this Thread
 
Old 09-28-2004 | 09:31 PM
  #1  
parish8's Avatar
Thread Starter
single digit dreamer
iTrader: (6)
 
Joined: Mar 2002
Posts: 9,743
Likes: 2
From: omaha ne
Default whoa, almost blew up another motor




15psi, cool night, and the truck is turning over all 4 wheels. pulling really hard. ahh ohh, too hard, look at that fuel presure i wondered if loging fuel presure would ever really come in handy and yep it sure did.

i have slightly over a 1/4 of a tank and it is sucking air. i knew when i put in the twin intank set up i couldn't let it run low or risk sucking air but figured down to 1/4 tank would be safe. looks like i better set my out of gas mental meeter to at least 3/8tank, 1/2 tank if i am going to really be pushing it.

i hope i didn't hurt anything, i hear a slight knock but it was probably always there.
Old 09-28-2004 | 09:39 PM
  #2  
chevymec's Avatar
TECH Resident
iTrader: (19)
 
Joined: Jul 2004
Posts: 980
Likes: 15
From: Richlands N.C.
Default

So im guessing air/low fuel psi is a turbos enemy??
Old 09-28-2004 | 09:39 PM
  #3  
MacADaYear's Avatar
TECH Addict
 
Joined: Apr 2002
Posts: 2,527
Likes: 0
From: Cali
Default

DOH!
Old 09-28-2004 | 09:40 PM
  #4  
Keith's Avatar
TECH Addict
 
Joined: Oct 2002
Posts: 2,544
Likes: 0
From: Mefis
Default

Have you ever seen a dip like that before?
In the way of A/F ratio?
Or injector duty cycle?

That logging stuff is pretty cool.

Any idea on when the 408 will be in?
Old 09-28-2004 | 09:57 PM
  #5  
F8L Z71's Avatar
12 Second Truck Club
 
Joined: Feb 2002
Posts: 5,575
Likes: 0
From: Sacramento, CA
Default

Ouch!
Old 09-28-2004 | 10:18 PM
  #6  
retsell's Avatar
TECH Regular
 
Joined: Apr 2004
Posts: 470
Likes: 0
From: Norman, OK
Default

Originally Posted by parish8



15psi, cool night, and the truck is turning over all 4 wheels. pulling really hard. ahh ohh, too hard, look at that fuel presure i wondered if loging fuel presure would ever really come in handy and yep it sure did.

i have slightly over a 1/4 of a tank and it is sucking air. i knew when i put in the twin intank set up i couldn't let it run low or risk sucking air but figured down to 1/4 tank would be safe. looks like i better set my out of gas mental meeter to at least 3/8tank, 1/2 tank if i am going to really be pushing it.

i hope i didn't hurt anything, i hear a slight knock but it was probably always there.
How are you logging boost and fuel pressure? I don't think I can log this with autotap, or can I?
Old 09-28-2004 | 10:19 PM
  #7  
retsell's Avatar
TECH Regular
 
Joined: Apr 2004
Posts: 470
Likes: 0
From: Norman, OK
Default

Also, you said blew up another motor? I don't remember reading that you blew up a previous one...
Old 09-28-2004 | 10:24 PM
  #8  
parish8's Avatar
Thread Starter
single digit dreamer
iTrader: (6)
 
Joined: Mar 2002
Posts: 9,743
Likes: 2
From: omaha ne
Default

i am loging boost, fuel presure and wideband

i blew up a 6.0 when i was running nitrous only. the fuel noid got stuck(didn't open) and i broke a couple of pistons.
Old 09-29-2004 | 03:31 AM
  #9  
dkubricht's Avatar
TECH Apprentice
 
Joined: Mar 2004
Posts: 379
Likes: 0
From: Houston, TX
Default

i take it you are talking about the a/f ratio taking a dip at the end cause that stuff looks like scribble lines to me
Old 09-29-2004 | 07:58 AM
  #10  
retsell's Avatar
TECH Regular
 
Joined: Apr 2004
Posts: 470
Likes: 0
From: Norman, OK
Default

Originally Posted by parish8
i am loging boost, fuel presure and wideband
How are you doing that? I would like to as well, but I guess i am not smart enough.


Quick Reply: whoa, almost blew up another motor



All times are GMT -5. The time now is 11:28 AM.