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

To much boost with too much timing=

Thread Tools
 
Search this Thread
 
Old 10-18-2005 | 09:38 PM
  #1  
8ALTNG's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Aug 2003
Posts: 3,647
Likes: 1
From: Methuen, MA
Default To much boost with too much timing=

I am the man Guess having the boost controller lock open and over boosting way past 20psi for acouple hours and then 3000 miles at 14+psi with a little to much timing can really make things look ugly. Thank God and Don and this was the only casualty.
Attached Thumbnails To much boost with too much timing=-7-value.jpg  
Old 10-18-2005 | 09:41 PM
  #2  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

Do you not have a boost gauge or what?
Old 10-18-2005 | 09:53 PM
  #3  
8ALTNG's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Aug 2003
Posts: 3,647
Likes: 1
From: Methuen, MA
Default

I have a gauge. It over boosted once when my conrtoller broke. I fixed it 2 hours later. It only hit 20+ like 4 times. Since then it has never seen over 17lbs. I had it tuned in the hot summer. So once it hit the cold winter air up here the number 7 plug burnt up. Also I think that the #7 cylinder was running a little lean. I have a wideband and it is always 11:1 at wot. I guess it had just had enough. No big deal though. its up and running right now. Except it isnt me beating on it tonight
Old 10-18-2005 | 10:01 PM
  #4  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

Damn chipping part of that valve off in the cylinder didnt screw anything up??
Old 10-18-2005 | 10:33 PM
  #5  
8ALTNG's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Aug 2003
Posts: 3,647
Likes: 1
From: Methuen, MA
Default

Nope. I told u guys I was the man. Don just drove it to work tonight and there was no problem. He examined the pistion and the head. A few small, tiny, surface scratches on the head that he already too care of.
Old 10-18-2005 | 10:34 PM
  #6  
CHarris's Avatar
TECH Addict
iTrader: (5)
 
Joined: Apr 2002
Posts: 2,381
Likes: 0
From: Poulsbo, WA
Default

How much timing?
Old 10-18-2005 | 10:44 PM
  #7  
8ALTNG's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Aug 2003
Posts: 3,647
Likes: 1
From: Methuen, MA
Default

18 degrees i think. Now it is at like 16 on street, 14 at the track. I have to ask Don exactly what its at.
Old 10-18-2005 | 10:48 PM
  #8  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

You are the man to be able to break off that big a piece of valve and not **** anything up.
Old 10-18-2005 | 11:44 PM
  #9  
vanillagorilla's Avatar
TECH Veteran
iTrader: (1)
 
Joined: Apr 2004
Posts: 4,038
Likes: 0
From: Arizona Bay
Default

Lucky bastard. Now get some more 11's with the mighty 4.8!!!
Old 10-18-2005 | 11:55 PM
  #10  
02sierraz71_5.3's Avatar
TECH Junkie
iTrader: (2)
 
Joined: Oct 2004
Posts: 3,473
Likes: 1
From: Cornelius, NC
Default

Who makes that valve? What do the others look like? Pitting on the heads-piston tops?



All times are GMT -5. The time now is 04:26 AM.