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View Full Version : striped spark plug hole


sparks400
10-10-2003, 09:47 PM
do i have to gte a whole new cylinder or can i just re-tap it??
Bill Fuller
10-10-2003, 09:57 PM
Sounds like its time for a new one to me.You will not be able to helicoil it and retapping can be done but where are you going to find over sized spark plugs?:confused2 Next time dont put the pythons on it to tighten.If you dont have a stock spark plug tool now would be a good time to order one,a socket and ratchet are not the answer.Sorry to here about your problem,check Service Honda.
sparks400
10-10-2003, 09:59 PM
i do have it i just cross treaded it, how r new ones? :( taken a ton of money out of my wallet if i do need a new one
JOEX
10-10-2003, 10:09 PM
Would a clean out tap work? I mean just run a tap that is the same size as the stock plug work?

If it is not repairable I think you will need a new head not the cylinder.

Joe
sparks400
10-10-2003, 10:11 PM
ya the middle part of the top end right
Glamis400ex
10-10-2003, 11:10 PM
wow, that's a new one to me. Not trying to be an azzhole, but how in the f@ck do you strip the spark plug threads? Do you put in your plug with an impact wrench??:eek2: :confused:
Just curious..

Glamis
stupid driver
10-11-2003, 08:02 AM
Originally posted by Glamis400ex
wow, that's a new one to me. Not trying to be an azzhole, but how in the f@ck do you strip the spark plug threads? Do you put in your plug with an impact wrench??:eek2: :confused:
Just curious..

Glamis

you mean u aint supposed to use an impact on the plug? uh-oh :( :p :blah:
skemp
10-11-2003, 02:36 PM
He said he cross threaded it.

It can usually be repaired, but let an experienced machinist do the work. There is a specialized type of heli-coil that is made for spark plugs. A new head is a lot more expensive than $50 and a trip to a machine shop. It is worth a try at least. If the machine shop says that they cannot repair it, I guess you better start looking for a head. :(
L.Vegas400
10-11-2003, 05:59 PM
Originally posted by skemp
, I guess you better start looking for a head. :(
i look for head all the time:eek:
ReconRider25
10-11-2003, 06:02 PM
helicoil it. thats what i did with my drain plug. my friend helicoiled the sparkplug hole on his snowmobile too. it works great.
sparks400
10-11-2003, 09:11 PM
thanks alot what size heilcoil?, and monday i will call up a machine shop to see if they can do it and how much.
luvmyex
10-12-2003, 08:29 AM
If you cant get it fixed pm me i have a head cover i can sell ya.
10-12-2003, 10:08 AM
how in the f@ck do you strip the spark plug threads?
I am sure he cross threaded it not over tightend it. Which makes perfect since and is very F@cking easy to do. Ok now for the fix if you have only screwed up less than half the threads you are fine. Take the head off take a rethreading tap and run it through the threads from the bottom. If more than half the threads are screwed up you will have to heli coil it. sent my to FDO for them to do it so I am not sure on sizes. You can call them and ask what to use, but I would recomend taking it a machine shop.
Glamis400ex
10-12-2003, 10:34 AM
All I meant by that was, a plug should have almost zero resistance when being screwed in, at the slightest bit of resistance.....STOP TURNING and back it out re try.

If I can't screw it in with my fingers, I have it wrong and need to re-try. Dont use the wrench to screw it in, only tighten it.

Glamis
sparks400
10-12-2003, 05:31 PM
ya i kno what u mean Glamis i wsa in a rush so u kno stupid mistakes can cause money. bump
sparks400
10-13-2003, 06:59 PM
what size heli-coil do i need for my striped spark plug hole?
HOT-ROD
10-13-2003, 07:16 PM
its got pretty new valves in it
sparks400
10-13-2003, 07:17 PM
what
HOT-ROD
10-13-2003, 07:19 PM
:rolleyes:
sparks400
10-13-2003, 07:20 PM
ya how much
HOT-ROD
10-13-2003, 07:22 PM
Originally posted by sparks400
ya how much
sparks400
10-13-2003, 07:25 PM
just tell me how much i dont got long distance
skemp
10-13-2003, 08:47 PM
Originally posted by sparks400
what size heli-coil do i need for my striped spark plug hole?

I think that spark plug has a 21mm reach, so I would say around a 15mm deep Helicoil would be good. To be sure you would have to measure how deep the hole is. I don't know that off the top of my head and don't have any heads laying around here to measure for you. The plug has 12mm threads, that is for sure. Just take the head off and a machine shop can take care of the rest. If you feel comfortable doing it yourself, just get the measurement of how deep it is and find the closest helicoil you can. Just be very careful drilling and tapping for the helicoil so it is straight. :)
sparks400
10-14-2003, 12:28 PM
thanks skemp