08-09-2015, 07:12 PM | #1 |
Drives: 2011 RS 2SS Camaro Join Date: Apr 2014
Location: plattsburgh ny
Posts: 101
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Loss of trap speed and ET
Trying to get some inputs or suggestions
Car went 11.2@133 first time out (1.9 60') Last time at the track best was 11.2@123 (1.7 60') with traps ranging 117-124 Today 11.4@125 (1.9 60') with traps 119-125 Checked boost and it is on par with what it was tuned with, 16 psi. Timing is on par with what it was tuned for. IATs were great. Pulled plugs when we got home, look good, gap is same as when installed. Only thing that has changed is I went from drag radials to nitto 555rs
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2011 Camaro RS/2SS M6
Best NA time 12.29@113.8 (CAI, headers) Best FI time 11.20@132.72 1.99 60' stock tires (ECS 1500, headers, LS9 cam, Alky Meth, Livernois dual pump,Monster LT1S clutch) 817whp 691 tq NEW SETUP Forged Thomspon Motorsports LS3, Aruns Jam cam. 852whp 689 TQ |
08-09-2015, 07:14 PM | #2 |
Drives: 2011 RS 2SS Camaro Join Date: Apr 2014
Location: plattsburgh ny
Posts: 101
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It's drained my brain all week long and I thought it was a fluke last weekend maybe even the track had an issue with the sensors.. But today confirmed something is not right
Meth is spraying fine and I can see the IATs drop as soon as it sprays
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2011 Camaro RS/2SS M6
Best NA time 12.29@113.8 (CAI, headers) Best FI time 11.20@132.72 1.99 60' stock tires (ECS 1500, headers, LS9 cam, Alky Meth, Livernois dual pump,Monster LT1S clutch) 817whp 691 tq NEW SETUP Forged Thomspon Motorsports LS3, Aruns Jam cam. 852whp 689 TQ |
08-09-2015, 07:29 PM | #3 |
Drives: 2010 2ss Join Date: Jul 2015
Location: montana
Posts: 76
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what the corrected altitude? it's never the same day to day and can affect the car a lot. weight of the tires can affect it also, are the nittos heavier?
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08-09-2015, 08:28 PM | #4 |
Drives: 2013 Camaro SS Turbo Join Date: Apr 2014
Location: South Florida
Posts: 1,525
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Current weather has an effect on power. More importantly the DA density altitude. How long ago did you run the faster time?
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08-09-2015, 08:41 PM | #5 |
Drives: 2011 RS 2SS Camaro Join Date: Apr 2014
Location: plattsburgh ny
Posts: 101
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Nittos are actually 3 pounds lighter then the P Zeros
I ran the 11.2@133 about 6 weeks ago... Was about 20 degrees Warmer that day
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2011 Camaro RS/2SS M6
Best NA time 12.29@113.8 (CAI, headers) Best FI time 11.20@132.72 1.99 60' stock tires (ECS 1500, headers, LS9 cam, Alky Meth, Livernois dual pump,Monster LT1S clutch) 817whp 691 tq NEW SETUP Forged Thomspon Motorsports LS3, Aruns Jam cam. 852whp 689 TQ |
08-09-2015, 08:46 PM | #6 |
Drives: 2011 RS 2SS Camaro Join Date: Apr 2014
Location: plattsburgh ny
Posts: 101
|
1117 da the 11.2@133 day
1003 DA today
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2011 Camaro RS/2SS M6
Best NA time 12.29@113.8 (CAI, headers) Best FI time 11.20@132.72 1.99 60' stock tires (ECS 1500, headers, LS9 cam, Alky Meth, Livernois dual pump,Monster LT1S clutch) 817whp 691 tq NEW SETUP Forged Thomspon Motorsports LS3, Aruns Jam cam. 852whp 689 TQ |
08-11-2015, 12:25 AM | #7 |
Drives: 2012 Camaro 1SS with Turbonetics Join Date: May 2014
Location: Ripley, MS
Posts: 47
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Are you logging AF ratio? Did you see any knock retard...or burst knock? What was the 1/8 mile mph?
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2012 1SS...in the 10's...but not fast enough yet.
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08-11-2015, 07:38 AM | #8 |
Drives: 2011 RS 2SS Camaro Join Date: Apr 2014
Location: plattsburgh ny
Posts: 101
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Not logging AF ratio
Didn't see any KR 1/8 was 103-104 on the day 11.2@133 1/8 was 95-99 on the other two times
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2011 Camaro RS/2SS M6
Best NA time 12.29@113.8 (CAI, headers) Best FI time 11.20@132.72 1.99 60' stock tires (ECS 1500, headers, LS9 cam, Alky Meth, Livernois dual pump,Monster LT1S clutch) 817whp 691 tq NEW SETUP Forged Thomspon Motorsports LS3, Aruns Jam cam. 852whp 689 TQ |
08-11-2015, 11:09 AM | #9 |
Drives: 2010 SS/RS LS3 M6 Join Date: Apr 2011
Location: Kansas
Posts: 693
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M6, clutch could be slipping a little after the first outing on stock tires to get it off the line.
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08-11-2015, 11:24 AM | #10 |
Drives: 12 camaro ss, 72 chevelle, 91camaro Join Date: Dec 2013
Location: findlay,oh
Posts: 2,069
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True that, he is past the power level that clutch is rated for
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12 camaro ss 427lsx, th400, f310 heads, crower shaft mounts, gpi specd solid roller, shearerfab 2k hp a/w, twin bullseye 88mm turbos, hughes pro ssx bolt together converter, holley dominator, 8.50 cert, backhalf, Ford 9", 33x17x16 tires, c16 fuel
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08-11-2015, 11:33 AM | #11 |
Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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Tire height? Going to a tall tire can kill MPH.
If not sounds like maybe clutch.
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Nick
Corvette Z06 -1200ish rwhp |
08-11-2015, 11:52 AM | #12 |
Drives: 2011 RS 2SS Camaro Join Date: Apr 2014
Location: plattsburgh ny
Posts: 101
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Stock size tires
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2011 Camaro RS/2SS M6
Best NA time 12.29@113.8 (CAI, headers) Best FI time 11.20@132.72 1.99 60' stock tires (ECS 1500, headers, LS9 cam, Alky Meth, Livernois dual pump,Monster LT1S clutch) 817whp 691 tq NEW SETUP Forged Thomspon Motorsports LS3, Aruns Jam cam. 852whp 689 TQ |
08-11-2015, 12:08 PM | #13 |
Drives: 2013 Camaro SS Turbo Join Date: Apr 2014
Location: South Florida
Posts: 1,525
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Compression and leak down test if in doubt
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08-11-2015, 01:08 PM | #14 |
Drives: 2010 Camaro Join Date: Nov 2011
Location: Abilene, TX
Posts: 54
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Broken spark plug or bad wire can be pretty mysterious to find, get a heat gun on the exhaust manifold tubes while its running and make sure none are cold.
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