Cobalt SS Network

ADVANCED Performance Modifications For advanced modification topics only.

OFFICIAL Blown 4-banger build updates!

Thread Tools
 
Search this Thread
 
Old 06-10-2008, 05:47 PM
  #1126  
Senior Member
 
Psykostevo's Avatar
 
Join Date: 05-20-06
Location: Phoenix, AZ
Posts: 6,911
Likes: 0
Received 6 Likes on 6 Posts
Originally Posted by Blown 4-banger
I hope to be at 400 bhp on pump gas, and seeing as my car will weigh 2700-2800 lbs, and yours is 3400 lbs. I still win, not to mention my gears will be longer than Corvette Z06 gears 130+ mph in 3rd gear baby!!!
Since you will be living down the street we shall see. If you don't hit your numbers we can always laugh at it together. We can just pack that turd up and take it to AZ Dyno chip and fool around on the dyno. That's after you get the rats and cobwebs out of it. God knows what's been living in your exhaust.
Psykostevo is offline  
Like
Old 06-10-2008, 06:10 PM
  #1127  
Senior Member
 
Herndon_High_SS's Avatar
 
Join Date: 12-15-06
Location: Herndon, Virginia
Posts: 4,003
Likes: 0
Received 0 Likes on 0 Posts
haha
Herndon_High_SS is offline  
Like
Old 06-10-2008, 08:17 PM
  #1128  
Senior Member
Thread Starter
 
Blown 4-banger's Avatar
 
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes on 0 Posts
Lopers speed shop in Phoenix already, agreed to let my use their dynojet for free. I will throw mine on the dyno in like september or october early in the morning so I can get decent numbers and not have 10000 degree intake temps.
Blown 4-banger is offline  
Like
Old 06-16-2008, 10:08 PM
  #1129  
Senior Member
Thread Starter
 
Blown 4-banger's Avatar
 
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes on 0 Posts
HOLY CRAP!!! So I just got back from the machine shop, we flow benched the head. Some surprising results (in both a good and bad way). I will let the numbers speak for themselves.

Intake @ 28" water
--Lift | CFM
.100"|90.06
.200"|174.87
.300"|234.15
.400"|260.95
.500"|267.60

Exhaust @ 28" water
--Lift | CFM
.100"|82.78
.200"|145.41
.300"|158.20
.400"|159.80
.500"|161.39
Blown 4-banger is offline  
Like
Old 06-16-2008, 10:10 PM
  #1130  
Senior Member
 
Herndon_High_SS's Avatar
 
Join Date: 12-15-06
Location: Herndon, Virginia
Posts: 4,003
Likes: 0
Received 0 Likes on 0 Posts
If i knew what this meant...
Herndon_High_SS is offline  
Like
Old 06-16-2008, 10:13 PM
  #1131  
Senior Member
Thread Starter
 
Blown 4-banger's Avatar
 
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Herndon_High_SS
If i knew what this meant...
It means the intake flows pretty damn good, and the exhaust, well it almost DOESN'T flow at all
Blown 4-banger is offline  
Like
Old 06-16-2008, 10:13 PM
  #1132  
Senior Member
iTrader: (2)
 
jimbos'ss's Avatar
 
Join Date: 10-09-05
Location: Killeen,TX
Posts: 4,624
Received 0 Likes on 0 Posts
our exhaust ports blow! there the size of a damn thimble!
jimbos'ss is offline  
Like
Old 06-16-2008, 10:16 PM
  #1133  
LSX RWD S/C conversion
iTrader: (2)
 
victory_red_SS's Avatar
 
Join Date: 03-25-05
Location: Maple Ridge, BC, Canada
Posts: 10,434
Received 265 Likes on 182 Posts
Originally Posted by Herndon_High_SS
If i knew what this meant...
It means he is a bit restricted on the exhaust side.
victory_red_SS is offline  
Like
Old 06-16-2008, 10:18 PM
  #1134  
Senior Member
Thread Starter
 
Blown 4-banger's Avatar
 
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by jimbos'ss
our exhaust ports blow! there the size of a damn thimble!
At certain points in the port, there are actually pockets of VACUUM!!!! WTF IT THAT!?!? GM is funny.
Blown 4-banger is offline  
Like
Old 06-16-2008, 10:18 PM
  #1135  
LSX RWD S/C conversion
iTrader: (2)
 
victory_red_SS's Avatar
 
Join Date: 03-25-05
Location: Maple Ridge, BC, Canada
Posts: 10,434
Received 265 Likes on 182 Posts
Originally Posted by jimbos'ss
our exhaust ports blow! there the size of a damn thimble!
Not entirely true. My exhaust side at .480 degrees of lift is 237.69
victory_red_SS is offline  
Like
Old 06-16-2008, 10:20 PM
  #1136  
Senior Member
iTrader: (2)
 
jimbos'ss's Avatar
 
Join Date: 10-09-05
Location: Killeen,TX
Posts: 4,624
Received 0 Likes on 0 Posts
Originally Posted by Blown 4-banger
At certain points in the port, there are actually pockets of VACUUM!!!! WTF IT THAT!?!? GM is funny.
wow that is bad, i took the time to hand polish my ports and i was very disappointed in how small they were!

the intake ports are damn near twice the diameter.
jimbos'ss is offline  
Like
Old 06-16-2008, 10:21 PM
  #1137  
Senior Member
Thread Starter
 
Blown 4-banger's Avatar
 
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by victory_red_SS
Not entirely true. My exhaust side at .480 degrees of lift is 237.69
Is that your fully ported LSJ head? If so, thats badass and I look forward to getting flow numbers like that... IF NOT BETTER

Whats your intake flow? ~300ish?
Blown 4-banger is offline  
Like
Old 06-16-2008, 10:21 PM
  #1138  
Senior Member
iTrader: (2)
 
jimbos'ss's Avatar
 
Join Date: 10-09-05
Location: Killeen,TX
Posts: 4,624
Received 0 Likes on 0 Posts
Originally Posted by victory_red_SS
Not entirely true. My exhaust side at .480 degrees of lift is 237.69
thats one hell of a port job did they remove all of the egr ports?
jimbos'ss is offline  
Like
Old 06-16-2008, 10:25 PM
  #1139  
LSX RWD S/C conversion
iTrader: (2)
 
victory_red_SS's Avatar
 
Join Date: 03-25-05
Location: Maple Ridge, BC, Canada
Posts: 10,434
Received 265 Likes on 182 Posts
Originally Posted by Blown 4-banger
Is that your fully ported LSJ head? If so, thats badass and I look forward to getting flow numbers like that... IF NOT BETTER

Whats your intake flow? ~300ish?
Also @ .480 it is 282.31 and yes this is my LSJ head for the race engine.

Originally Posted by jimbos'ss
thats one hell of a port job did they remove all of the egr ports?
Not to my understanding.
victory_red_SS is offline  
Like
Old 06-16-2008, 10:26 PM
  #1140  
Senior Member
iTrader: (2)
 
jimbos'ss's Avatar
 
Join Date: 10-09-05
Location: Killeen,TX
Posts: 4,624
Received 0 Likes on 0 Posts
Originally Posted by victory_red_SS
Also @ .480 it is 282.31 and yes this is my LSJ head for the race engine.

Not to my understanding.
damn thats pretty suprising that they were able to get that much out of the exhaust ports without porting out the egr ports.
jimbos'ss is offline  
Like
Old 06-16-2008, 10:29 PM
  #1141  
LSX RWD S/C conversion
iTrader: (2)
 
victory_red_SS's Avatar
 
Join Date: 03-25-05
Location: Maple Ridge, BC, Canada
Posts: 10,434
Received 265 Likes on 182 Posts
Originally Posted by jimbos'ss
damn thats pretty suprising that they were able to get that much out of the exhaust ports without porting out the egr ports.
I can ask them the specifics but chances are they won't want to give up any secrets ($$$)
victory_red_SS is offline  
Like
Old 06-16-2008, 10:31 PM
  #1142  
Senior Member
iTrader: (2)
 
jimbos'ss's Avatar
 
Join Date: 10-09-05
Location: Killeen,TX
Posts: 4,624
Received 0 Likes on 0 Posts
Originally Posted by victory_red_SS
I can ask them the specifics but chances are they won't want to give up any secrets ($$$)
figures
jimbos'ss is offline  
Like
Old 06-16-2008, 10:36 PM
  #1143  
Senior Member
Thread Starter
 
Blown 4-banger's Avatar
 
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by victory_red_SS
Also @ .480 it is 282.31 and yes this is my LSJ head for the race engine.

Not to my understanding.
Yeah, I figured the intake port was pretty good as is from the factory. Thats pretty damn good on the exhaust side though.
Blown 4-banger is offline  
Like
Old 06-17-2008, 11:23 AM
  #1144  
Rent me! per hour
 
Area47's Avatar
 
Join Date: 03-22-07
Location: Still fixing others mistakes.
Posts: 24,185
Likes: 0
Received 20 Likes on 14 Posts
specs on muh new cams

Intake
~262 adv???
218@.050"
.441

Exhaust
~266 adv???
220@.050"
.437

109LSA
Area47 is offline  
Like
Old 06-17-2008, 11:26 AM
  #1145  
Senior Member
iTrader: (1)
 
lsjwannabe's Avatar
 
Join Date: 01-23-06
Location: on here
Posts: 10,731
Likes: 0
Received 0 Likes on 0 Posts
are they in yet?
lsjwannabe is offline  
Like
Old 06-17-2008, 11:26 AM
  #1146  
Rent me! per hour
 
Area47's Avatar
 
Join Date: 03-22-07
Location: Still fixing others mistakes.
Posts: 24,185
Likes: 0
Received 20 Likes on 14 Posts
still sittin in the tubes, in a box. on a chair. in my basement
Area47 is offline  
Like
Old 06-17-2008, 11:28 AM
  #1147  
Senior Member
iTrader: (1)
 
lsjwannabe's Avatar
 
Join Date: 01-23-06
Location: on here
Posts: 10,731
Likes: 0
Received 0 Likes on 0 Posts
lazy
lsjwannabe is offline  
Like
Old 06-17-2008, 11:29 AM
  #1148  
Rent me! per hour
 
Area47's Avatar
 
Join Date: 03-22-07
Location: Still fixing others mistakes.
Posts: 24,185
Likes: 0
Received 20 Likes on 14 Posts
troofs

my 272's are slowly starting to do what i wanted them to do 3 months ago.

damn base circle regrinds
Area47 is offline  
Like
Old 06-17-2008, 11:32 AM
  #1149  
Senior Member
iTrader: (1)
 
lsjwannabe's Avatar
 
Join Date: 01-23-06
Location: on here
Posts: 10,731
Likes: 0
Received 0 Likes on 0 Posts
you do the regrinds or did you get them from gmtunersource
lsjwannabe is offline  
Like
Old 06-17-2008, 11:36 AM
  #1150  
Rent me! per hour
 
Area47's Avatar
 
Join Date: 03-22-07
Location: Still fixing others mistakes.
Posts: 24,185
Likes: 0
Received 20 Likes on 14 Posts
the 272's are the regrinds.

the cams i want to put in the damn car are the gmpp ones
Area47 is offline  
Like



Advanced Search
Quick Reply: OFFICIAL Blown 4-banger build updates!


Reply Closed Thread Share

All times are GMT -4. The time now is 06:22 PM.