Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
New Edge Cobras
03/04 rods and pistons in my 01
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="GodStang" data-source="post: 9157471" data-attributes="member: 11142"><p>Many many many many guys have blown #7 and #8 pistons on 03-04 Cobras on high speed 5th and or 6th gear pulls. Just a small sample. Trust me if you have the car apart there are better pistons to go with.</p><p></p><p>Just an idea. very small sample. some may be bad tunes but a lot are stock all at high speeds:</p><p></p><p>mustang500hp (Stock): Galled #2 piston suspect due to low piston clearance. Failed at 2k mi.</p><p></p><p>Xterminator (Stock except for UPR CAI): After a couple of 70 - 140 mph blasts. No.1 piston seized & ripped the wrist pin from the piston. ~16 kmi. </p><p></p><p>smytty001 (Stock): Piston #7 damaged at 2.7 kmi. Stock except for CB.</p><p></p><p>John1975 (Eaton 2.93” upper, x psi, 433/_ rwhp/tq): Suspect blown #2 piston. Failed after 3 high-speed (135-155 mph) runs. A/F = 10.9-11.7:1 right up to redline. Octane = 94. K&N FIPK. Engine failed at 3.5k mi. Modded for 1.5k mi.</p><p></p><p>RedSquad7 (Eaton w/ 2.93” upper, 13-14 psi, 459/456 rwhp/tq on DJ): 2/4/05. 2nd Engine. Burned piston #2 after high-speed run (155-160 mph) during which several vacuum lines came off. A/F = 12.0-12.2:1 (at tailpipe). Octane = ?. Total timing = ?. 9” open K&N. Stock fuel sys. Bassani catted X and CB. Modded for ~2 kmi. Predator custom tune. Engine failed at ~10 kmi.</p><p></p><p>Z-06_Killa (Eaton 2.8” upper, 12.5(?) psi, 470/501 rwhp/tq DJ, 508 rwhp MD w/ N2O): 5/23/05. Piston #2, cyl and head damage. Lead came off spark plug, causing damage to piston...piston fatigued in that location/possible clogged injector. Detonation was heard by passenger in other car @ 120+mph before it let go. A/F = 12:1 blower, 11:1 N2O. NGK BR7EF plugs gapped at 0.032”. Octane = 93. Total timing = 23 deg blower, 20 deg N2O. Prochamber, Magnapack CB. CAI. Failure at ~22k mi. Modded at ~15k mi.</p><p></p><p>calithekid (Eaton, 2.76”, _ psi, 435/453 rwhp/tq): 5/27/05. Knocking sound noticed during street race. One bad piston occurred at ~140 mph and missed shift -> over reved engine. Custom dyno tune, Magnaflow CB, JLT CAI, 5000 mi at time of failure. Motor replaced under warranty.</p><p></p><p>Grey03Cobra (Eaton, _ psi, 483/503 rwhp/tq): Piston (heat) damage to #7 & 8 occurred after top end high speed run (160 mph). Bassani X, CB & Mid-Length Headers. UPR CAI. Diablo chip. Engine failed at ~18k mi.</p><p></p><p>tommygun (Eaton 2.8” upper, 14 psi, 456/458 rwhp/tq): Piston #7 broke from top down to the ring land resulting in no compression. Failed when racing at > 150 mph. Detonation noted at time of failure. Octane = 91. A/F = 12.2:1 at peak power. NGK TR6 plugs. 11,235 mi when failed (700 mi after tick fix). 5.6k mi modded. Also had exhaust and CAI.</p><p></p><p>SALEENGTROUSH (Eaton w/ 2.8” upper, _ psi, _/_ rwhp/tq): Heat damage to piston #7 & #8 is scored. Many (>50) high-speed (upwards of 160 mph) runs. Heard detonation during run when it blew. UPR CAI, Mac O/R-H and CB, Custom Predator tune.</p><p></p><p>cobra93teal (Eaton w/ 2.8” upper, 15 psi, 520 (!) rwhp, ? tq on DJ): 2/5/05. Heat damage to pistons #3 & #7. Damaged during high-speed run. Octane = 93. NGK TR6. Total timing = ?. CAI. Stock fuel sys. Borla CB. Modded for 17 kmi. Engine failed at 31 kmi on 12/28/04.</p><p></p><p>8URZ-28 (Whipple, 3.0”/2#, _ psi, _/_ rwhp/tq): 9/24/05. Loss of power after high speed run (~140 mph). Coolant spewage from overflow tank. Knocking sound at idle and smoke out exhaust. NGK TR6. KB BAP, 60# injectors, MAFia. Amazon CAI, Accufab TB. MRT H-pipe, Borla Stingers.</p><p></p><p>Red&BlackSVT (Whipple, 23 psi, 656/631 rwhp/tq): 3/27/06. Damage to piston #7 and head damage. After numerous high-speed (160 mph) runs. A/F =11.5. Octane = 93&104 mix. Total timing = 23 deg.</p></blockquote><p></p>
[QUOTE="GodStang, post: 9157471, member: 11142"] Many many many many guys have blown #7 and #8 pistons on 03-04 Cobras on high speed 5th and or 6th gear pulls. Just a small sample. Trust me if you have the car apart there are better pistons to go with. Just an idea. very small sample. some may be bad tunes but a lot are stock all at high speeds: mustang500hp (Stock): Galled #2 piston suspect due to low piston clearance. Failed at 2k mi. Xterminator (Stock except for UPR CAI): After a couple of 70 - 140 mph blasts. No.1 piston seized & ripped the wrist pin from the piston. ~16 kmi. smytty001 (Stock): Piston #7 damaged at 2.7 kmi. Stock except for CB. John1975 (Eaton 2.93” upper, x psi, 433/_ rwhp/tq): Suspect blown #2 piston. Failed after 3 high-speed (135-155 mph) runs. A/F = 10.9-11.7:1 right up to redline. Octane = 94. K&N FIPK. Engine failed at 3.5k mi. Modded for 1.5k mi. RedSquad7 (Eaton w/ 2.93” upper, 13-14 psi, 459/456 rwhp/tq on DJ): 2/4/05. 2nd Engine. Burned piston #2 after high-speed run (155-160 mph) during which several vacuum lines came off. A/F = 12.0-12.2:1 (at tailpipe). Octane = ?. Total timing = ?. 9” open K&N. Stock fuel sys. Bassani catted X and CB. Modded for ~2 kmi. Predator custom tune. Engine failed at ~10 kmi. Z-06_Killa (Eaton 2.8” upper, 12.5(?) psi, 470/501 rwhp/tq DJ, 508 rwhp MD w/ N2O): 5/23/05. Piston #2, cyl and head damage. Lead came off spark plug, causing damage to piston...piston fatigued in that location/possible clogged injector. Detonation was heard by passenger in other car @ 120+mph before it let go. A/F = 12:1 blower, 11:1 N2O. NGK BR7EF plugs gapped at 0.032”. Octane = 93. Total timing = 23 deg blower, 20 deg N2O. Prochamber, Magnapack CB. CAI. Failure at ~22k mi. Modded at ~15k mi. calithekid (Eaton, 2.76”, _ psi, 435/453 rwhp/tq): 5/27/05. Knocking sound noticed during street race. One bad piston occurred at ~140 mph and missed shift -> over reved engine. Custom dyno tune, Magnaflow CB, JLT CAI, 5000 mi at time of failure. Motor replaced under warranty. Grey03Cobra (Eaton, _ psi, 483/503 rwhp/tq): Piston (heat) damage to #7 & 8 occurred after top end high speed run (160 mph). Bassani X, CB & Mid-Length Headers. UPR CAI. Diablo chip. Engine failed at ~18k mi. tommygun (Eaton 2.8” upper, 14 psi, 456/458 rwhp/tq): Piston #7 broke from top down to the ring land resulting in no compression. Failed when racing at > 150 mph. Detonation noted at time of failure. Octane = 91. A/F = 12.2:1 at peak power. NGK TR6 plugs. 11,235 mi when failed (700 mi after tick fix). 5.6k mi modded. Also had exhaust and CAI. SALEENGTROUSH (Eaton w/ 2.8” upper, _ psi, _/_ rwhp/tq): Heat damage to piston #7 & #8 is scored. Many (>50) high-speed (upwards of 160 mph) runs. Heard detonation during run when it blew. UPR CAI, Mac O/R-H and CB, Custom Predator tune. cobra93teal (Eaton w/ 2.8” upper, 15 psi, 520 (!) rwhp, ? tq on DJ): 2/5/05. Heat damage to pistons #3 & #7. Damaged during high-speed run. Octane = 93. NGK TR6. Total timing = ?. CAI. Stock fuel sys. Borla CB. Modded for 17 kmi. Engine failed at 31 kmi on 12/28/04. 8URZ-28 (Whipple, 3.0”/2#, _ psi, _/_ rwhp/tq): 9/24/05. Loss of power after high speed run (~140 mph). Coolant spewage from overflow tank. Knocking sound at idle and smoke out exhaust. NGK TR6. KB BAP, 60# injectors, MAFia. Amazon CAI, Accufab TB. MRT H-pipe, Borla Stingers. Red&BlackSVT (Whipple, 23 psi, 656/631 rwhp/tq): 3/27/06. Damage to piston #7 and head damage. After numerous high-speed (160 mph) runs. A/F =11.5. Octane = 93&104 mix. Total timing = 23 deg. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
New Edge Cobras
03/04 rods and pistons in my 01
Top