Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Bigwormgraphix
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 03-04-2018, 06:20 PM   #169
go_go_gadget88
 
go_go_gadget88's Avatar
 
Drives: 2010 Camaro 2SS/RS ABM 6M
Join Date: Jul 2017
Location: Kansas
Posts: 416
Quote:
Originally Posted by zz430camaro View Post
I have to give you credit for keeping so cool.
Thanks. I can assure you my thoughts are currently consumed by this, but it is what it is. If something is mechanically wrong, it is most likely my fault, so no point getting worked up over it.

I would be a lot more upset, but the car still runs pretty good, so there's that. I will see if TSP has any input before I proceed.


I did do some looking into cam being off. It sounds like it's possible for cam gear to be off a tooth and still run. Someone on LS1 tech had theirs off one and it sounds like theirs was having same issues I am. Down on power,not revving out, more torque than expected.

Hope I don't have to tear back into it
__________________
2010 Aqua Blue Metallic 2SS/RS LS3 6 Speed -- Rotofab CAI | Speed Engineering 1 7/8" Longtubes w/ cat Delete | Magnaflow competition catback | TSP 231/246 cam| TSP/PAC .660" Spring Kit | TSP CNC Ported Heads | Bo White PTB | Powell Bronze Trunnion bushings | 3.91's | BC Catch Can

go_go_gadget88 is offline   Reply With Quote
Old 03-04-2018, 06:51 PM   #170
zz430camaro

 
Drives: 67 camaro, 2015 1LE
Join Date: Oct 2015
Location: Parma, OH
Posts: 819
I am not sure you could be a tooth off without having contact with the pistons but its possible. If it was you would have either unusally high or low cranking cylinder pressure. You sould be sitting at around 191 psi cranking pressure. I did a simulation using Performance Trends Engine Analyzer and your situation looked more like advancing the cam by a tooth and the cylinder pressure went to 230 psi. Retarding the cam dropped it to 146 psi. Might not be a bad idea to check it really quick.
zz430camaro is offline   Reply With Quote
Old 03-04-2018, 06:59 PM   #171
zz430camaro

 
Drives: 67 camaro, 2015 1LE
Join Date: Oct 2015
Location: Parma, OH
Posts: 819
I am not sure you could be a tooth off without having contact with the pistons but its possible. If it was you would have either unusally high or low cranking cylinder pressure. You sould be sitting at around 191 psi cranking pressure. I did a simulation using Performance Trends Engine Analyzer and your situation looked more like advancing the cam by a tooth and the cylinder pressure went to 230 psi. Retarding the cam dropped it to 146 psi. Might not be a bad idea to check it really quick.

Advanced situaton is the green and dark blue lines (other is normal install, retarted situation not on this graph), you dont get the wavy action but you get the drop in HP and the torque starts to drop off bad at 5500. This is crankshaft HP and Torque. Not saying this is it but intersting analysis and the cylinder pressure would tell you this if its even mechanically possible.


Name:  andvace.JPG
Views: 126
Size:  95.3 KB
zz430camaro is offline   Reply With Quote
Old 03-04-2018, 06:59 PM   #172
frankwjr

 
frankwjr's Avatar
 
Drives: 2010 SS 2SS M6
Join Date: Aug 2016
Location: Smithsburg, Md.
Posts: 2,191
Quote:
Originally Posted by zz430camaro View Post
I am not sure you could be a tooth off without having contact with the pistons but its possible. If it was you would have either unusally high or low cranking cylinder pressure. You sould be sitting at around 191 psi cranking pressure. I did a simulation using Performance Trends Engine Analyzer and your situation looked more like advancing the cam by a tooth and the cylinder pressure went to 230 psi. Retarding the cam dropped it to 146 psi. Might not be a bad idea to check it really quick.

lol...thought I was the only one who had that program! you got ver 3.4?
__________________
2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - 127K! - All work by me...
frankwjr is offline   Reply With Quote
Old 03-04-2018, 07:10 PM   #173
zz430camaro

 
Drives: 67 camaro, 2015 1LE
Join Date: Oct 2015
Location: Parma, OH
Posts: 819
Quote:
Originally Posted by frankwjr View Post
lol...thought I was the only one who had that program! you got ver 3.4?
Yep 3.4 now! I love it. Had it for years. The LS3 model I have works well, I checked it against real dyno graphs and it models things pretty darn good.
zz430camaro is offline   Reply With Quote
Old 03-04-2018, 07:13 PM   #174
go_go_gadget88
 
go_go_gadget88's Avatar
 
Drives: 2010 Camaro 2SS/RS ABM 6M
Join Date: Jul 2017
Location: Kansas
Posts: 416
I so I just need a compression gauge to check? Just hook it up to plug hole and crank it over and see if it's high or low? Guess that's an easy test. Just need to get a gauge.

I wouldn't have any idea if it can even be off without major issues. I had no contact problems binding it when I was turning it over by hand. And no issues sounding like valves kissing the piston when I fired it up. So if this is the culprit, I hope nothing has been harmed.

Ironically when I was setting the timing gear and marks I remember lining up the dots and wondering how you could mess that up. So I really wouldn't think that was it, but early signs kinda point there
__________________
2010 Aqua Blue Metallic 2SS/RS LS3 6 Speed -- Rotofab CAI | Speed Engineering 1 7/8" Longtubes w/ cat Delete | Magnaflow competition catback | TSP 231/246 cam| TSP/PAC .660" Spring Kit | TSP CNC Ported Heads | Bo White PTB | Powell Bronze Trunnion bushings | 3.91's | BC Catch Can

go_go_gadget88 is offline   Reply With Quote
Old 03-04-2018, 07:19 PM   #175
zz430camaro

 
Drives: 67 camaro, 2015 1LE
Join Date: Oct 2015
Location: Parma, OH
Posts: 819
Quote:
Originally Posted by go_go_gadget88 View Post
I so I just need a compression gauge to check? Just hook it up to plug hole and crank it over and see if it's high or low? Guess that's an easy test. Just need to get a gauge.

I wouldn't have any idea if it can even be off without major issues. I had no contact problems binding it when I was turning it over by hand. And no issues sounding like valves kissing the piston when I fired it up. So if this is the culprit, I hope nothing has been harmed.

Ironically when I was setting the timing gear and marks I remember lining up the dots and wondering how you could mess that up. So I really wouldn't think that was it, but early signs kinda point there
Ya, I dont think you are off (andvancing the cam reduces piston to valve clearance so I think it would hit) but a compression test would tell you if there was some kind of unusal pressure from the norm. You would need a compresion gauge and put it in a plug hole. You need to disconnect the ignition coil main harness so the engine does not start, then just crank it over and read the gauge. Even if one cylinder reads good, It would not be a bad idea to get readings for every cylinder so you know what they are. Kind of like going to the doctor and getting a check-up, healthy cylinder pressure tells you valves are closing at the correct time and they are sealed when closed.
zz430camaro is offline   Reply With Quote
Old 03-04-2018, 07:24 PM   #176
go_go_gadget88
 
go_go_gadget88's Avatar
 
Drives: 2010 Camaro 2SS/RS ABM 6M
Join Date: Jul 2017
Location: Kansas
Posts: 416
Quote:
Originally Posted by zz430camaro View Post
Ya, I dont think you are off but a compression test would tell you if there was some kind of unusal pressure from the norm. You would need a compresion gauge and put it in a plug hole. You need to disconnect the ignition coil harness so the engine does not start, then just crank it over and read read the gauge. Even if one cylinder reads good, It would not be a bad idea to get readings for every cylinder so you know what they are.
I don't have a whole lot of other theories at this point to guess on unfortunately. Unless TSP has a miracle solution I'm kind of just guessing for now.

And Frank's trick of holding the throttle to not start the car would probably come in handy here
__________________
2010 Aqua Blue Metallic 2SS/RS LS3 6 Speed -- Rotofab CAI | Speed Engineering 1 7/8" Longtubes w/ cat Delete | Magnaflow competition catback | TSP 231/246 cam| TSP/PAC .660" Spring Kit | TSP CNC Ported Heads | Bo White PTB | Powell Bronze Trunnion bushings | 3.91's | BC Catch Can

go_go_gadget88 is offline   Reply With Quote
Old 03-04-2018, 07:33 PM   #177
zz430camaro

 
Drives: 67 camaro, 2015 1LE
Join Date: Oct 2015
Location: Parma, OH
Posts: 819
Quote:
Originally Posted by go_go_gadget88 View Post
I don't have a whole lot of other theories at this point to guess on unfortunately. Unless TSP has a miracle solution I'm kind of just guessing for now.

And Frank's trick of holding the throttle to not start the car would probably come in handy here
Ya, process of elimination. Hey a compression test is always good to do after major engine work, gives you some insight into the engine health.
zz430camaro is offline   Reply With Quote
Old 03-04-2018, 08:36 PM   #178
13SSCamaro
 
13SSCamaro's Avatar
 
Drives: 2013 Camaro SS
Join Date: Apr 2017
Location: South Florida
Posts: 214
Compression test is a cheap and easy to do. You might be able to rent one from a local parts store as well. They are cheap at sears too if you want to buy one. That will give you instant results telling you if you are off at all. Sucks your gonna have to get it retuned no matter what you do, hopefully they will cut the retune price in half like a lot of tuners do.
__________________
2013 SS M6, TSP Stage 3 231/246 cam kit, TSP Trunion upgrade, Cold Air Inductions CAI, VMAX PTB, TSP 1 7/8 Long tube headers and high flow cats, Corsa Xtreme ZL1 Catback exhaust, Elite E2-X Catch can, Trick Flow Gen-X 255 heads milled 0.025 and valve job, GPI rod mod and ported intake, 850 injectors,ZL1 fuel pump, Flex sensor and E-85 512rwhp/462rwtq
13SSCamaro is offline   Reply With Quote
Old 03-04-2018, 09:17 PM   #179
go_go_gadget88
 
go_go_gadget88's Avatar
 
Drives: 2010 Camaro 2SS/RS ABM 6M
Join Date: Jul 2017
Location: Kansas
Posts: 416
I live in BFE, so not a lot of stores to snag one. We do have a local auto store that possibly would. I may hit my dad up tomorrow, I think he may have one.

It's at least SOMETHING to try anyhow. And will message TSP. They may say there's no way I could have had it off any without ptv issues.

I'm sure my tuner would work with me. I just feel bad I may have wasted a bunch of his time if I discover an issue like this that would throw the tune way off.
__________________
2010 Aqua Blue Metallic 2SS/RS LS3 6 Speed -- Rotofab CAI | Speed Engineering 1 7/8" Longtubes w/ cat Delete | Magnaflow competition catback | TSP 231/246 cam| TSP/PAC .660" Spring Kit | TSP CNC Ported Heads | Bo White PTB | Powell Bronze Trunnion bushings | 3.91's | BC Catch Can

go_go_gadget88 is offline   Reply With Quote
Old 03-04-2018, 09:20 PM   #180
go_go_gadget88
 
go_go_gadget88's Avatar
 
Drives: 2010 Camaro 2SS/RS ABM 6M
Join Date: Jul 2017
Location: Kansas
Posts: 416
I appreciate all you guys chiming in with ideas/suggestions/opinions. Thank you!
__________________
2010 Aqua Blue Metallic 2SS/RS LS3 6 Speed -- Rotofab CAI | Speed Engineering 1 7/8" Longtubes w/ cat Delete | Magnaflow competition catback | TSP 231/246 cam| TSP/PAC .660" Spring Kit | TSP CNC Ported Heads | Bo White PTB | Powell Bronze Trunnion bushings | 3.91's | BC Catch Can

go_go_gadget88 is offline   Reply With Quote
Old 03-04-2018, 10:46 PM   #181
Bretts
SS
 
Bretts's Avatar
 
Drives: 2015 2ss rs
Join Date: Oct 2014
Location: Alberta
Posts: 873
not a maf sensor signal ? just a guess at cheap stuff still in play
__________________
JPSS Blackmagic 32mm rear swaybar caster locks and radius arm inserts, Ride Tech 2coilovers JDP upper control arm bushings BMR lower knuckle bushing Bo White throttle body Cold Air Inductions c.a.i.MightyMouse Catch can ,npp short throw shift and lifetime xm3.91 gears Spohn del-sphere toe link and trailing arms Prothane subframe bushings Verona XO wheels/ccs sp16a track set, mild to wild, acs ground effects BTR stage 3 cam and kooks longtubes with high flow cats
Bretts is offline   Reply With Quote
Old 03-05-2018, 11:54 AM   #182
Sturgill_SS
 
Sturgill_SS's Avatar
 
Drives: 2010 Camaro SS 504Whp/464Tq
Join Date: Jan 2017
Location: Independence, KY
Posts: 261
Did you changes the springs at all? Make sure the valves were placed exactly where they came out of! I took my heads into a shop and got a compression test done after replacing the springs before putting the heads back on.
__________________
TSP F35 stg4 Cam - TSP under drive pulley - TSP dual springs/rods - ported ls3 intake - 3.91 gears - TSP Trunnion upgrade - LS7 Lifters - Long Tubes - MGW short throw - CAI - lowered 1 inch on BMR springs - Holley VC
Sturgill_SS is online now   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:33 PM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.