Official TVS Thread!!!
10-11-2012, 02:27 PM
#2556
30 psi
13.6 afr
36 degree's of timing
e85.
made dick for power. pushed coolant. why? because i wasn't paying attention when i redid the timing map for the halved map. whoops.
which leads me to think, how in the **** do people blow these things up? is it sheer stupidity of the end user and the "tuner" combined?
for argument sake, i fixed the map and the next pull was 370whp.
13.6 afr
36 degree's of timing
e85.
made dick for power. pushed coolant. why? because i wasn't paying attention when i redid the timing map for the halved map. whoops.
which leads me to think, how in the **** do people blow these things up? is it sheer stupidity of the end user and the "tuner" combined?
for argument sake, i fixed the map and the next pull was 370whp.
I know I remember you saying a while back that you liked to go to the track to see what the car would trap at the different power levels. Would you mind sharing what your results were? If not that is understandable. IIRC you had once posted up 118mph on DR's and 121-122mph on street tires, but that was a while ago and my memory may be getting old
10-11-2012, 02:33 PM
#2558
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Join Date: 03-22-07
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I came across a similar, although much less intense situation while testing out that Id1k base map data you posted on the other forum a few months ago. I lowered the timing to be safe, but didnt realize just how much the g/cyl calculation was going to be skewed. Ran 31.5* timing and 12.9 AFR for a pull. Nothing harmed though fortunately.
I know I remember you saying a while back that you liked to go to the track to see what the car would trap at the different power levels. Would you mind sharing what your results were? If not that is understandable. IIRC you had once posted up 118mph on DR's and 121-122mph on street tires, but that was a while ago and my memory may be getting old
I know I remember you saying a while back that you liked to go to the track to see what the car would trap at the different power levels. Would you mind sharing what your results were? If not that is understandable. IIRC you had once posted up 118mph on DR's and 121-122mph on street tires, but that was a while ago and my memory may be getting old
10-11-2012, 02:38 PM
#2559
Makes me feel decent about my 119mph on 26" slicks though. On a 2.7" pulley on the tune I run every day, so the car must make decent power
I have a ported head though. Was reving to 7600 to play it a little safe.
10-11-2012, 03:00 PM
#2564
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the car had full suspension under it. cabs, end links, rear sway, ssc springs, ss/tc shocks n struts.
yulp
10-11-2012, 05:25 PM
#2573
Maybe this will help
https://www.cobaltss.net/forums/2-0l...5-dyno-186685/
the car is flat out, out of injector. used the meth to try and compensate for the top end. it helped a smidge, but not enough. going to re dyno it again when i get the 1000's in the car in a week or so.
11.5 afr starting out
22 degree's total timing.
2.75 pulley
sae was 342/291
::shrugs::
not bad for an 84k mile motor with 50k on the valve spring. stock clutch as well
c16 did 352/308 {wasn't out of fuel!}
plus i could hit the timing down low a lot harder to get the torque i wanted.
::flame suit on::
-------------
https://www.cobaltss.net/forums/2-0l...o-runs-211984/
----
https://www.cobaltss.net/forums/2-0l...arison-125002/
M62
Awkward slow clap for Area47....
https://www.cobaltss.net/forums/2-0l...5-dyno-186685/
the car is flat out, out of injector. used the meth to try and compensate for the top end. it helped a smidge, but not enough. going to re dyno it again when i get the 1000's in the car in a week or so.
11.5 afr starting out
22 degree's total timing.
2.75 pulley
sae was 342/291
::shrugs::
not bad for an 84k mile motor with 50k on the valve spring. stock clutch as well
c16 did 352/308 {wasn't out of fuel!}
plus i could hit the timing down low a lot harder to get the torque i wanted.
::flame suit on::
-------------
https://www.cobaltss.net/forums/2-0l...o-runs-211984/
2.5 pulley vs 2.6 on a tvs.
i'll get a better dyno graph tomorrow night.
either it's out of blower, or out of header. one of the two is limiting it. i am guessing header.
23.5 degree's of timing
11.5 afr
98 lb injectors at 79% idc.
e85
::shrugs:: oh well. not what i wanted, but close enough.
374/314 2.5 pulley
371/310 2.6 pulley
i'll get a better dyno graph tomorrow night.
either it's out of blower, or out of header. one of the two is limiting it. i am guessing header.
23.5 degree's of timing
11.5 afr
98 lb injectors at 79% idc.
e85
::shrugs:: oh well. not what i wanted, but close enough.
374/314 2.5 pulley
371/310 2.6 pulley
https://www.cobaltss.net/forums/2-0l...arison-125002/
M62
here ya go kids. the only thing that has changed is the cams, and the air temp/humidity. they are in std for this reason. SAE numbers are sorts of wacky. this is simply a cam stand off.
colors, cams, date that it was done. street numbers, not OMG dyno numbers.
red - gmr - 7/5/08
green - 272 - 2/10/08
blue - stock - 10/27/07
red was 11.6 afr. 20 degree's of timing
green was 12.0 afr 24 degree's.
blue was 12.4 25 degree's of timing.
im aware of the torque differences. there is a reason behind it. timing has a part of it, but the bigger part of it is compression ratio.
colors, cams, date that it was done. street numbers, not OMG dyno numbers.
red - gmr - 7/5/08
green - 272 - 2/10/08
blue - stock - 10/27/07
red was 11.6 afr. 20 degree's of timing
green was 12.0 afr 24 degree's.
blue was 12.4 25 degree's of timing.
im aware of the torque differences. there is a reason behind it. timing has a part of it, but the bigger part of it is compression ratio.
Awkward slow clap for Area47....
Last edited by 100% METH; 10-11-2012 at 05:35 PM.
10-11-2012, 05:25 PM
#2574
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