DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Is this what a melted COP looks like?

Thread Tools
 
Search this Thread
 
Old 12-04-2011, 01:12 AM
  #1  
Elite Member
Thread Starter
iTrader: (12)
 
cardriverx's Avatar
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
Default Is this what a melted COP looks like?

So about 3/4 the way back to pittsburgh, my car started to run on three cylinders. At first it was just under boost, then by the time I got home it would not run well at all. If I give it more than 15% throttle, it drops a cylinder. After checking around I pulled the COP and this is what it looked like...

Is there a way to test these by checking resistance?



cardriverx is offline  
Old 12-04-2011, 08:52 AM
  #2  
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 15,177
Total Cats: 1,681
Default

It seems like it is LSx coil time. You can do a full swap for less then $200.
shuiend is offline  
Old 12-04-2011, 09:47 AM
  #3  
Elite Member
 
flounder's Avatar
 
Join Date: Mar 2010
Location: Detroit
Posts: 1,524
Total Cats: 31
Default

It sure looks shot but you can test it by using a test light. Clamp one end to the body (ground) and probe into the coil secondary with the other end. Have someone startup the car and slowly pull the probe out from the coil pack. You should have a nice blue/purple spark extend about an inch from where the spark plug would attach.

Don't get zapped.

Also, make sure the spark plug is still tight in the bore. IDK why the insulator looks cocked to one side in that pic?
flounder is offline  
Old 12-04-2011, 10:48 AM
  #4  
Elite Member
Thread Starter
iTrader: (12)
 
cardriverx's Avatar
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
Default

Originally Posted by flounder
It sure looks shot but you can test it by using a test light. Clamp one end to the body (ground) and probe into the coil secondary with the other end. Have someone startup the car and slowly pull the probe out from the coil pack. You should have a nice blue/purple spark extend about an inch from where the spark plug would attach.

Don't get zapped.

Also, make sure the spark plug is still tight in the bore. IDK why the insulator looks cocked to one side in that pic?
It is seperating from the housing, that's what lead me to believe I melted it.
cardriverx is offline  
Old 12-04-2011, 11:14 AM
  #5  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

push it back together, they come apart there.
Braineack is offline  
Old 12-04-2011, 11:21 AM
  #6  
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by shuiend
It seems like it is LSx coil time. You can do a full swap for less then $200.
Link to plug wire info. I've been thinking about doing this because the Lone Star State has an abundance of LS1 coils on the cheap.
hustler is offline  
Old 12-04-2011, 02:07 PM
  #7  
Elite Member
Thread Starter
iTrader: (12)
 
cardriverx's Avatar
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
Default

Originally Posted by Braineack
push it back together, they come apart there.
It seems really really hard to get it to budge, at least by hand. I guess ill try a vice or something.
cardriverx is offline  
Old 12-04-2011, 04:32 PM
  #8  
Elite Member
Thread Starter
iTrader: (12)
 
cardriverx's Avatar
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
Default

so i put it in a vice and tried to force it back together, and its a no go. I cranked on it until it felt like it was going to explode, and it did not go back in. I ordered a couple off ebay just to be safe..
cardriverx is offline  
Old 12-04-2011, 05:15 PM
  #9  
Elite Member
iTrader: (24)
 
kotomile's Avatar
 
Join Date: Oct 2006
Location: Monterey, CA
Posts: 7,537
Total Cats: 42
Default

Yup, that's exactly what mine looked like when I popped some. Are your dwell settings correct?
kotomile is offline  
Old 12-04-2011, 05:57 PM
  #10  
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Default

Originally Posted by hustler
Link to plug wire info. I've been thinking about doing this because the Lone Star State has an abundance of LS1 coils on the cheap.
Mount them behind the cam cover like stock and use stock wires. Pictures of mine exist on this site somewhere, but unless you know what you're looking for it's passable for stock.
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Old 12-04-2011, 06:27 PM
  #11  
Elite Member
Thread Starter
iTrader: (12)
 
cardriverx's Avatar
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,573
Total Cats: 12
Default

Originally Posted by kotomile
Yup, that's exactly what mine looked like when I popped some. Are your dwell settings correct?
Awesome, thanks +1 for you. I am going to run through my tune and re tune the dwell, keeping it as low as possible. I thought I had it as 2.5-3ms but I have not checked it in awhile. Ill have to see how low I can go without misfiring.
cardriverx is offline  
Old 12-04-2011, 06:31 PM
  #12  
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by Ben
Mount them behind the cam cover like stock and use stock wires. Pictures of mine exist on this site somewhere, but unless you know what you're looking for it's passable for stock.
Fab skill fail.
hustler is offline  
Old 12-04-2011, 06:53 PM
  #13  
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Default

A pair of 90 degree angle brackets and a few inches of allthread or steel rod. The brackets bolt to the back of the cam cover and the coils are sandwiched on the rod. If you can't do it, then you fail at life.
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Tony the Tiger
Miata parts for sale/trade
63
12-29-2016 02:23 AM
Erat
Miata parts for sale/trade
17
02-17-2016 04:22 PM
FrankB
Miata parts for sale/trade
6
09-30-2015 11:48 AM
fail wagon
Miata parts for sale/trade
2
09-07-2015 08:51 PM



Quick Reply: Is this what a melted COP looks like?



All times are GMT -4. The time now is 01:24 AM.