Cross-Thread Blues
#1
Cross-Thread Blues
I have a stripped sparkplug port/sleeve/whatever-U-call-it. I currently know of 3 possible options/fixes:
1) Heliarc - weld aluminum back into port and re-tap
2) Sleeve - Drill and press a sleeve
3) Replace head
Looking for advice in the form of intelligent/educated/experienced opinions as to the best option and/or pros/cons of each options.
Notes: Cylider impacted is second from front of engine (not sure of # in ignition cycle). The spark plug will screw into cylinder head but will not tighten. As a result I am getting "blow-by" which is slowing destroying the sparkplug boot. Coil assembly appears to be OK.
1) Heliarc - weld aluminum back into port and re-tap
2) Sleeve - Drill and press a sleeve
3) Replace head
Looking for advice in the form of intelligent/educated/experienced opinions as to the best option and/or pros/cons of each options.
Notes: Cylider impacted is second from front of engine (not sure of # in ignition cycle). The spark plug will screw into cylinder head but will not tighten. As a result I am getting "blow-by" which is slowing destroying the sparkplug boot. Coil assembly appears to be OK.
#2
Registered User
Join Date: Aug 2011
Location: Lake Quivira KS. or Port Charlotte FL.
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Helicoil or an insert will fix it unless you keep driving and burn around the spark plug. Most shops can make the repair for under $100.00.
#3
Moderator
None of the above.
Get a spark plug thread chaser, and re-thread it. cross threads are not stripped threds, meaning missing metal.
A thread chaser IS NOT A TAP. it is made to re-distrubute botched threads, not cut new ones.
If the car were here id do it in ten minutes. Its not hard. Get the proper tool, and be straight with it.
Get a spark plug thread chaser, and re-thread it. cross threads are not stripped threds, meaning missing metal.
A thread chaser IS NOT A TAP. it is made to re-distrubute botched threads, not cut new ones.
If the car were here id do it in ten minutes. Its not hard. Get the proper tool, and be straight with it.
#5
A properly applied Heli-Coil is ok but I really like a Time-Sert. I've got a metric kit from them and it is hands down the best thread repair kit I've ever used (and easier to apply). Check them out. http://www.timesert.com/index.html
#6
Second the timeserts as they are a sleeve rather than a coil insert.
I've posted earlier that you can fill the cylinder with shaving cream, install the timesert then turn the engine over and the shaving cream pushes out any swarf/chips that may have dropped out while tapping the threads for the timesert.
I've posted earlier that you can fill the cylinder with shaving cream, install the timesert then turn the engine over and the shaving cream pushes out any swarf/chips that may have dropped out while tapping the threads for the timesert.
#7
Trending Topics
#8
None of the above.
Get a spark plug thread chaser, and re-thread it. cross threads are not stripped threds, meaning missing metal.
A thread chaser IS NOT A TAP. it is made to re-distrubute botched threads, not cut new ones.
If the car were here id do it in ten minutes. Its not hard. Get the proper tool, and be straight with it.
Get a spark plug thread chaser, and re-thread it. cross threads are not stripped threds, meaning missing metal.
A thread chaser IS NOT A TAP. it is made to re-distrubute botched threads, not cut new ones.
If the car were here id do it in ten minutes. Its not hard. Get the proper tool, and be straight with it.
#9
Originally Posted by Billman250' timestamp='1316543654' post='20990006
If it is stripped out, Heli-Coil is the only way to fly.
Thanks again.
#10
Second the timeserts as they are a sleeve rather than a coil insert.
I've posted earlier that you can fill the cylinder with shaving cream, install the timesert then turn the engine over and the shaving cream pushes out any swarf/chips that may have dropped out while tapping the threads for the timesert.
I've posted earlier that you can fill the cylinder with shaving cream, install the timesert then turn the engine over and the shaving cream pushes out any swarf/chips that may have dropped out while tapping the threads for the timesert.
Thanks.