Notices
Repair and Service Help All Repair related problems, issues, TSBs, and anything else revolving around the Repair of your Mustang

2012 5.0,lots of smoke cylinder 8 misfire.

Thread Tools
 
Search this Thread
 
Old 8/17/11, 10:12 PM
  #241  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by PTRocks
The valves will definitely add to the labor cost because of the valve seat mods. Changing the springs will be more straightforward since the heads are already off.


Darn.


This is what I read in the August 11 issue of 5.0 Mustang and Super Ford:

-Coyote clutch and pressure plate kept vibrating apart at high RPM. They had to rewire the clutch bolts to keep the pressure plate in place during testing.They went from 6 to 9 pressure plate bolts.

( I have a stock flywheel but I have a Tr66060 w/Mcleod twin disc clutch)


-The Boss engines speed overheated and killed the Coyotes idler and belt tensioner bearings. The Boss gained the 6.2 liter truck engine pulleys too because of the addictional energy generated @ the Boss's redline.


These are all things I would need to change to be able to rev over 7300RPM's safely... That's more in labor and parts...


I wont be shifting over 7300rpms since it isn't safe... so I'm not sure if the manifold will do anthing for me. It's onlyabout 15HP over a tuned 5.0. I could get the manifold for $200.

Thanks
Old 8/17/11, 10:29 PM
  #242  
Post *****
 
cdynaco's Avatar
 
Join Date: December 14, 2007
Location: State of Jefferson Mountains USA
Posts: 20,005
Likes: 0
Received 4 Likes on 4 Posts
Originally Posted by unas2k5
I wont be shifting over 7300rpms since it isn't safe... so I'm not sure if the manifold will do anthing for me. It's onlyabout 15HP over a tuned 5.0. I could get the manifold for $200.

Thanks
Yeah that's a lot of money for all the extra changes for 15HP - at the top end.

Plus maybe suspension to handle the power like that 11 second guy. Plus tires and wheels, plus...
Old 8/17/11, 10:48 PM
  #243  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by cdynaco
Yeah that's a lot of money for all the extra changes for 15HP - at the top end.

Plus maybe suspension to handle the power like that 11 second guy. Plus tires and wheels, plus...

LOL, you're right NOT worth it at all....oh and I'd take a mid range loss!

And not running the oil squirters since they were blocked off by Ford.

There are no other mods I can think of to make my car faster other then a SC, turbo or Nitrous.

This is what I have so far:

Factory 3.73, Stainless Works 1 7/8 LT headers, Catted X,Catbacks, TR6060, MGW Shifter, Mclead C, One piece DS, Steeda LCA, Steeda CAI...
Gonna have to go with 4.30's soon to gain the torque I lost off the trans swap.
Old 8/18/11, 07:23 AM
  #244  
Member
 
FWP!'s Avatar
 
Join Date: April 4, 2011
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Slims00ls1z28
Reliable LS7's are easy. Change the cheap cast pistons to forged units and blammo. The 5.0 probably would benefit from the same and probably has cast pistons (just guessing I really don't know what the 5.0's use) for the same reason, cold start up emissions. Works fine in stock form but turn up the wick and viola a barely tamed lion waiting on that one bad tank of cheap gas, and since like alot of v8 designs #8 is the hottest because of the coolant travel path.... Me personally I wouldn't want to thin out a 11.0 compression on pump gas anyway, even with the electronics that's pushing the envelope IMHO. When I had my Camaro tuned I told them specifically not to make it so imperitive to use 91 because I've been to stations which set off my check engine light in stock form. If I wanted more power I relied on parts not the tune.

From what I've read, that isn't correct and actually the opposite.
Old 8/19/11, 01:32 PM
  #245  
Member
 
gabroye's Avatar
 
Join Date: August 9, 2011
Posts: 25
Likes: 0
Received 0 Likes on 0 Posts
I read thats a tune problem..i hooe your cylinder 8 is not busted.or youll end up paying serious cash.
Old 8/19/11, 03:37 PM
  #246  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by gabroye
I read thats a tune problem..i hooe your cylinder 8 is not busted.or youll end up paying serious cash.
Old 8/19/11, 04:10 PM
  #247  
Cobra Member
 
ShaneGT's Avatar
 
Join Date: January 30, 2011
Location: Houma, Louisiana
Posts: 1,161
Likes: 0
Received 2 Likes on 2 Posts
just as a precaution, you may wanna look into running meth injection as well to cool the cylinders further. would help with the number 8 problem ALOT..
Old 8/19/11, 04:23 PM
  #248  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by ShaneGT
just as a precaution, you may wanna look into running meth injection as well to cool the cylinders further. would help with the number 8 problem ALOT..
How do I do that? Thanks.
Old 8/19/11, 08:51 PM
  #249  
Member
 
shang442's Avatar
 
Join Date: July 25, 2011
Location: Dallas, Texas
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Something like this - not sure of the availability for the 2011+ yet.

http://www.musclemustangfastfords.co...ons/index.html
Old 8/19/11, 09:00 PM
  #250  
Like Father...
I ♥ Sausage
 
Rather B.Blown's Avatar
 
Join Date: April 4, 2007
Location: Just outside the middle of nowhere
Posts: 20,294
Received 627 Likes on 452 Posts
You know Sam, I love your optimism and drive to keep going despite everything you've been through with a new car already. A lot of people would be btching, giving up, and starting an internet crusade with media and lawyers. Respect for you.
Old 8/20/11, 08:00 AM
  #251  
Cobra Member
 
ShaneGT's Avatar
 
Join Date: January 30, 2011
Location: Houma, Louisiana
Posts: 1,161
Likes: 0
Received 2 Likes on 2 Posts
some of the best kits in the business , http://www.snowperformance.net/products.php?p_cat=204
Old 8/20/11, 08:00 AM
  #252  
Cobra Member
 
ShaneGT's Avatar
 
Join Date: January 30, 2011
Location: Houma, Louisiana
Posts: 1,161
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by shang442
Something like this - not sure of the availability for the 2011+ yet.

http://www.musclemustangfastfords.co...ons/index.html
most kits can be universal, you just have to bring it to your tuner to tune for it.
Old 8/22/11, 05:20 PM
  #253  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Rather B.Blown
You know Sam, I love your optimism and drive to keep going despite everything you've been through with a new car already. A lot of people would be btching, giving up, and starting an internet crusade with media and lawyers. Respect for you.

Thank you sir I appreciate it! You're the man!
Love the profile picture by the way LOL

Old 8/22/11, 05:23 PM
  #254  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by ShaneGT
some of the best kits in the business , http://www.snowperformance.net/products.php?p_cat=204


Thanks! I'll look into it.

Doesn't it help now that my pistons are forged? I'm thinking of running my 93 Steeda tune I got about 5 months ago. I don't think they modify the knock sensor.

Your thoughts?
Old 8/22/11, 06:11 PM
  #255  
bob
Legacy TMS Member
 
bob's Avatar
 
Join Date: May 16, 2004
Location: Bristol, TN
Posts: 5,197
Received 16 Likes on 11 Posts
Originally Posted by Rather B.Blown
The bigs & littles, the cold air (looks like late winter) and altitude (Maryland) had a lot to do with that run as well.
Good ol' Bud's Creek, they also prep the track very well there which lets you really take advantage of that killer DA.

This is also to place where you see the stock 10.99 and faster Z06 runs on the east coast.
Old 8/23/11, 10:18 AM
  #256  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Some pictures I took at the dream cruise.
Attached Images      
Old 8/23/11, 10:20 AM
  #257  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
More.
Attached Images    
Old 8/25/11, 01:29 AM
  #258  
Mach 1 Member
Thread Starter
 
unas2k5's Avatar
 
Join Date: January 23, 2011
Location: RICHMOND VA
Posts: 511
Likes: 0
Received 0 Likes on 0 Posts
Just waiting on the block to come in guys.
Old 8/25/11, 01:01 PM
  #259  
Mach 1 Member
 
blackgt87's Avatar
 
Join Date: June 17, 2011
Location: Youngstown, Ohio
Posts: 605
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by unas2k5
Just waiting on the block to come in guys.

Did you ever get a clear explaination of what happened?

Did your tuner modify the knock sensors, if so who was it and what did they do?

What were you doing when you noticed the smoke? Cruising, racing, what gear were you in?
Old 8/28/11, 03:22 PM
  #260  
Bullitt Member
 
BlackOut2k11's Avatar
 
Join Date: July 23, 2010
Location: New York
Posts: 265
Likes: 0
Received 0 Likes on 0 Posts
I'm curious to see pictures of the damage inside of the old engine.


Quick Reply: 2012 5.0,lots of smoke cylinder 8 misfire.



All times are GMT -6. The time now is 03:02 PM.