Loss of trap speed and ET - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

tjsblackbonne · 08-09-2015, 07:12 PM

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

tjsblackbonne · 08-09-2015, 07:14 PM

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

climb-101 · 08-09-2015, 07:29 PM

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?

fif_gen_powa · 08-09-2015, 08:28 PM

Current weather has an effect on power. More importantly the DA density altitude. How long ago did you run the faster time?

tjsblackbonne · 08-09-2015, 08:41 PM

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

tjsblackbonne · 08-09-2015, 08:46 PM

1117 da the 11.2@133 day

1003 DA today

kevin87turbot · 08-11-2015, 12:25 AM

Are you logging AF ratio? Did you see any knock retard...or burst knock? What was the 1/8 mile mph?

tjsblackbonne · 08-11-2015, 07:38 AM

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

swiftkart · 08-11-2015, 11:09 AM

M6, clutch could be slipping a little after the first outing on stock tires to get it off the line.

ttshovel · 08-11-2015, 11:24 AM

Quote:

Originally Posted by swiftkart

M6, clutch could be slipping a little after the first outing on stock tires to get it off the line.

True that, he is past the power level that clutch is rated for

Unreal · 08-11-2015, 11:33 AM

Tire height? Going to a tall tire can kill MPH.

If not sounds like maybe clutch.

tjsblackbonne · 08-11-2015, 11:52 AM

Stock size tires

fif_gen_powa · 08-11-2015, 12:08 PM

Compression and leak down test if in doubt

crankpin · 08-11-2015, 01:08 PM

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.

08-09-2015, 07:12 PM	#1
tjsblackbonne Drives: 2011 RS 2SS Camaro Join Date: Apr 2014 Location: plattsburgh ny Posts: 101	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 __________________ 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
tjsblackbonne Drives: 2011 RS 2SS Camaro Join Date: Apr 2014 Location: plattsburgh ny Posts: 101	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 __________________ 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, 08:28 PM	#4
fif_gen_powa Drives: 2013 Camaro SS Turbo Join Date: Apr 2014 Location: South Florida Posts: 1,525	Current weather has an effect on power. More importantly the DA density altitude. How long ago did you run the faster time? __________________ 388ci 91/104 Turbo TH400 8.3@164 https://instagram.com/turbo_ls3/

08-09-2015, 08:41 PM	#5
tjsblackbonne Drives: 2011 RS 2SS Camaro Join Date: Apr 2014 Location: plattsburgh ny Posts: 101	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 __________________ 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
tjsblackbonne Drives: 2011 RS 2SS Camaro Join Date: Apr 2014 Location: plattsburgh ny Posts: 101	1117 da the 11.2@133 day 1003 DA today __________________ 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
climb-101 Drives: 2010 2ss Join Date: Jul 2015 Location: montana Posts: 76	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?

08-11-2015, 12:25 AM	#7
kevin87turbot Drives: 2012 Camaro 1SS with Turbonetics Join Date: May 2014 Location: Ripley, MS Posts: 47	Are you logging AF ratio? Did you see any knock retard...or burst knock? What was the 1/8 mile mph? __________________ 2012 1SS...in the 10's...but not fast enough yet.

08-11-2015, 07:38 AM	#8
tjsblackbonne Drives: 2011 RS 2SS Camaro Join Date: Apr 2014 Location: plattsburgh ny Posts: 101	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 __________________ 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
swiftkart Drives: 2010 SS/RS LS3 M6 Join Date: Apr 2011 Location: Kansas Posts: 693	M6, clutch could be slipping a little after the first outing on stock tires to get it off the line.

08-11-2015, 11:33 AM	#11
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	Tire height? Going to a tall tire can kill MPH. If not sounds like maybe clutch. __________________ Nick Corvette Z06 -1200ish rwhp

08-11-2015, 11:52 AM	#12
tjsblackbonne Drives: 2011 RS 2SS Camaro Join Date: Apr 2014 Location: plattsburgh ny Posts: 101	Stock size tires __________________ 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
fif_gen_powa Drives: 2013 Camaro SS Turbo Join Date: Apr 2014 Location: South Florida Posts: 1,525	Compression and leak down test if in doubt __________________ 388ci 91/104 Turbo TH400 8.3@164 https://instagram.com/turbo_ls3/

08-11-2015, 01:08 PM	#14
crankpin Drives: 2010 Camaro Join Date: Nov 2011 Location: Abilene, TX Posts: 54	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.