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Old 06-15-2014, 11:18 PM
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Fixing blown helicoil 2v engine

I tried searching on this but didn't find any solid info.

2002 f250 5.4l
So spark plug blows out, gets helicoiled by a local shop then spits out again, now I have to fix it.

I want to timesert the heads, however I don't know if it will work where the helicoil used to be. I am looking at buying kit 5553 but don't think it will work, can anyone give me help that has been in this position?

Thanks
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Old 06-16-2014, 12:46 AM
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Timesert offers what they call a "Big Sert" for previous failed repairs. They also offer a triple oversize kit if they are really screwed up. They list the OD thread size of the inserts on their site.

http://www.timesert.com/html/bigsert_sparkplug.html
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Old 06-16-2014, 06:30 AM
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The "Bigsert" is their standard insert and is what the 5553 kit uses. If you need the triple oversize insert, you will need an additional tool kit.

Timesert says that the Bigsert will repair most blown helicoils. It depends on how big it was drilled out for the helicoils.
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Old 06-16-2014, 12:12 PM
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Thanks for your responses guys.

Ok so I just found out that when the first plug blew out, the owner of the truck brought it to the shop to have the blown spark plug well inserted but also had the other 7 plug wells inserted, is there a way to remove the helicoils in the other wells or just wait for them to pop.

also I did a little research, I think the shop used the helicoil kit where you tap the spark plug well, it appears the helicoil tap is 17mm and the timesert (5553 kit) inserts or "big-serts" are 18mm OD, 1mm is not much room but I'm wondering if I could use the 5553 kit to repair this blown helicoil plug and it will be solid.

Has anyone used the triple oversize insert and tools? how did it work?
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Old 06-21-2014, 10:12 PM
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I used the cheap autozone kit on my V10 and the both came out. I bought a Blue Point kit from Snap On and the insert was big enough to repair both of them. The kit is $400 though.
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Old 06-23-2014, 09:38 PM
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Yeah, I was going to big-sert the two but then he said he didn't want it and took his truck back
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Old 06-23-2014, 09:38 PM
 
 
 
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