2.79 pulley tensioner
#1
New Member
Thread Starter
Join Date: 09-08-07
Location: new york
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
2.79 pulley tensioner
i have a cobalt ss with 2.79 tuned vibrant 4-2-1 header highflow cat magnaflow exhaust
and i tested my car against a cobaltss with just stage 2 and tourque damp. and he can spin tire all day and i cant we both have the lsd but we lined up both cars at a 40 roll and hes alittle bit quicker than i am but i have more modds and the 2.79 he drove my car and couldnt get the tires to break free idk wtf is going on y is his car right there and y cant i break my tires loose and he can??????
HELP
and i tested my car against a cobaltss with just stage 2 and tourque damp. and he can spin tire all day and i cant we both have the lsd but we lined up both cars at a 40 roll and hes alittle bit quicker than i am but i have more modds and the 2.79 he drove my car and couldnt get the tires to break free idk wtf is going on y is his car right there and y cant i break my tires loose and he can??????
HELP
#3
New Member
Thread Starter
Join Date: 09-08-07
Location: new york
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
#4
Senior Member
iTrader: (-1)
Join Date: 08-01-07
Location: WestCoast
Posts: 6,612
Likes: 0
Received 0 Likes
on
0 Posts
is that 2.79 on 42 lb injectors ..you maybe going static over 5500 rpms cause of your duty cycle....and with no cooling mods..you might be knockin and your car will pull timing and you'll lose power
#5
New Member
Thread Starter
Join Date: 09-08-07
Location: new york
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
i see what ur sayn but its in low RPM's not the high the high i pull like a motha Fer but low rpms i feel like i got no power
#7
New Member
Thread Starter
Join Date: 09-08-07
Location: new york
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
#8
Fail Less.
iTrader: (3)
your injectors are definitely going static and are most likely dangerously lean, not to mention creating way more heat with the 2.79. do not go w0t again until you get tuned with 60#s. i have seen cars running 2.8 on 42#s with afr as lean as 13.1. keep this up and your injectors are gonna pack their **** and go home.
#10
New Member
Thread Starter
Join Date: 09-08-07
Location: new york
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
im in 11.8 to 12.1 in AFR according to the tunning software and my wideband its in the perfect zone for the car and im almost positive there not going static they will only go static when i hit 7200 rpm thats y i put redline back to 7000 witch it is 12.1 AFR
#12
New Member
Thread Starter
Join Date: 09-08-07
Location: new york
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
[QUOTE=SlowBalt_06;2258017]your still going static probly around 6k[/QUO
ok i kno what ur sayn but its in low rpms im having the slow punch as in around 4000 rpms
ok i kno what ur sayn but its in low rpms im having the slow punch as in around 4000 rpms
#13
Fail Less.
iTrader: (3)
^^^yes. still going static. look at your injector duty cycle and/or injector pulsewidth. i would guess you are way over 20msec pulsewidth and way over 100% idc.
you need more fuel than 12:1 afr especially if you are running a 2.79 with no cooling mods. your IAT2 is probably through the roof unless j00 has mad cooling modz y0.
as for the tensioner, unless your boost is jumping up and down and/or you seem to be getting "flat spots" in acceleration at w0t, you arent gettign belt slip and dont need a tensioner. the stage 2 belt alone is usually good for the 2.8/2.79
you need more fuel than 12:1 afr especially if you are running a 2.79 with no cooling mods. your IAT2 is probably through the roof unless j00 has mad cooling modz y0.
as for the tensioner, unless your boost is jumping up and down and/or you seem to be getting "flat spots" in acceleration at w0t, you arent gettign belt slip and dont need a tensioner. the stage 2 belt alone is usually good for the 2.8/2.79
Last edited by Bika; 04-27-2008 at 11:30 PM.
Thread
Thread Starter
Forum
Replies
Last Post