drshotty Posted March 30, 2018 Report Share Posted March 30, 2018 Need all of your help. 2010 Shelby. Put a 2.3L TVS on it. 2.4 pulley. 72lbs injectors. New Iridium colder plugs. intake. Twin 66 tb. Header. Xpipe. Bap. Bmr and Viking suspension. Tuned by Lund. Car ran fine. This is where the problem begins. Installed a new McLeod clutch, throw out bearing, and dss 1 piece driveshaft. Broke in the clutch. Car drives fine around town under 3k rpms. there is a large vibration above 4K+ rpms. Car will do a pull but it’s as if in won’t go full potential. Even a full pull cuts out around 130. And after the pull I get misfire codes and the car will run lean 17-18 afr and sounds like it’s cammed because at idle it struggles to even stay running. after turning it off and back on and letting it sit and run for a while it corrects itself back to normal. Lund turned off rear 02’s and said I may need the re-learn crank feature and have ford do it. Anyone have this issue before after clutch install? Quote Link to comment Share on other sites More sharing options...
ViperNC Posted March 30, 2018 Report Share Posted March 30, 2018 Did you go with an aluminum flywheel? The tune has to account for that as it is spinning less mass. Could be the problem.... I would definitely try the crank re-learn and see what happens. Good luck! Quote Link to comment Share on other sites More sharing options...
drshotty Posted March 30, 2018 Author Report Share Posted March 30, 2018 26 minutes ago, ViperNC said: Did you go with an aluminum flywheel? The tune has to account for that as it is spinning less mass. Could be the problem.... I would definitely try the crank re-learn and see what happens. Good luck! I didn’t think about that.. you would think Lund would have told me that they needed to do a retune with a new flywheel? I’ll shoot them a message Monday. appreciate it! Quote Link to comment Share on other sites More sharing options...
ViperNC Posted March 31, 2018 Report Share Posted March 31, 2018 I would also question the installer for your clutch. If that guy is worth his salt, he should know the computer has to be reprogramed to account for the aluminum flywheel. Quote Link to comment Share on other sites More sharing options...
drshotty Posted April 2, 2018 Author Report Share Posted April 2, 2018 (edited) Update: Tried to have a crank re-learn done and the car is misfiring on cylinder 7. We did a relative compression test and cylinder 7 is 4% off from the rest of the cylinders. Swapped out the spark plugs because cylinder 7's was bent. After new spark plug it ran fine for 10 minutes and then started to misfire again. Pulled the new spark plug and it was bent just like the one before. We can believe that the piston would be hitting the spark plug but don't know what else would be hitting it so consistently. Were going to pull the head and figure out whats going on. So for now the Shelby is down. If i build it, does anyone have suggestions on brands or pistons and rods? Edited April 2, 2018 by drshotty Quote Link to comment Share on other sites More sharing options...
ViperNC Posted April 4, 2018 Report Share Posted April 4, 2018 Holy Crap! That is crazy. Coincidence that this started right after your clutch install. I'll defer to others about commenting on heads, pistons. You may want to research with Revan Racing and Watson Racing. Quote Link to comment Share on other sites More sharing options...
shel-b001 Posted April 4, 2018 Report Share Posted April 4, 2018 (edited) On 4/2/2018 at 7:41 PM, drshotty said: Update: Tried to have a crank re-learn done and the car is misfiring on cylinder 7. We did a relative compression test and cylinder 7 is 4% off from the rest of the cylinders. Swapped out the spark plugs because cylinder 7's was bent. After new spark plug it ran fine for 10 minutes and then started to misfire again. Pulled the new spark plug and it was bent just like the one before. We can believe that the piston would be hitting the spark plug but don't know what else would be hitting it so consistently. Were going to pull the head and figure out whats going on. So for now the Shelby is down. If i build it, does anyone have suggestions on brands or pistons and rods? Wow never seen a bent plug but that would explain the miss fire with no gap, You could send a scope down to have a look inside cylinder but looks like you may already damaged the piston so i guess a tear down is in order.Good Luck Edited April 4, 2018 by shelby001 Quote Link to comment Share on other sites More sharing options...
SlowMan Posted April 5, 2018 Report Share Posted April 5, 2018 I would recommend to change the title of this very interesting thread because the problem has nothing to do with the clutch. Quote Link to comment Share on other sites More sharing options...
ShelbyGT5HUN Posted April 14, 2018 Report Share Posted April 14, 2018 (edited) . Edited April 14, 2018 by ShelbyGT5HUN Quote Link to comment Share on other sites More sharing options...
Raptor131 Posted September 19, 2018 Report Share Posted September 19, 2018 Will shorter plugs fix piston over travel? Lol, well what happened? Quote Link to comment Share on other sites More sharing options...
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