Thread repair in cylinders
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Thread repair in cylinders
Hey Guys, I found out some time ago the PO of my bike had drilled out two of the exhaust bolt holes.
He didn't just go one size over but two to make it a little harder for me to correct the situation. Stock size is 8 X 1.25 and the current bolts are 10 X 1.5.
Well what I settled on is just about the best thing a guy could do in this situation.
Problem=Money
Apply Money=Problem solved
I bought a Time Sert Big Sert Kit. Bst thing I ever did. The procedure was simple and with the supplied pro grade tools made a hack like me look pretty good.
Yes I know my engine is GROSS!! Due also to the port spooging all over the place because the old head pipe was loose because the bolt hole was sloppy and then the bolt could not be tightened properly.
Here is the kit with a stock bolt and the offending oversizer
Here is the hole drilled out and then chamfered.
Threaded with the supplied tap.
Insert ready for installation.
And then The final result.
I also have a few inserts left over in case this happens again.
Helicoils are OK in my book for some repairs. In this case though it was best to spend a little more and get it done the best way I know of.
edited to add: I meant to put this in repair
He didn't just go one size over but two to make it a little harder for me to correct the situation. Stock size is 8 X 1.25 and the current bolts are 10 X 1.5.
Well what I settled on is just about the best thing a guy could do in this situation.
Problem=Money
Apply Money=Problem solved
I bought a Time Sert Big Sert Kit. Bst thing I ever did. The procedure was simple and with the supplied pro grade tools made a hack like me look pretty good.
Yes I know my engine is GROSS!! Due also to the port spooging all over the place because the old head pipe was loose because the bolt hole was sloppy and then the bolt could not be tightened properly.
Here is the kit with a stock bolt and the offending oversizer
Here is the hole drilled out and then chamfered.
Threaded with the supplied tap.
Insert ready for installation.
And then The final result.
I also have a few inserts left over in case this happens again.
Helicoils are OK in my book for some repairs. In this case though it was best to spend a little more and get it done the best way I know of.
edited to add: I meant to put this in repair
- H2RICK
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Nice job, Jaybob.
Timeserts are the hot ticket, IMO. The techs at our shop have nothing else to use...at the insistence of the boss. He does NOT want any comebacks....and we've never had any in the 7 seasons I've worked there. I've seen Helicoils back out but the boss swears he's never had that kind of problem with the Timeserts.
Do it right.....or do it twice !!!
Timeserts are the hot ticket, IMO. The techs at our shop have nothing else to use...at the insistence of the boss. He does NOT want any comebacks....and we've never had any in the 7 seasons I've worked there. I've seen Helicoils back out but the boss swears he's never had that kind of problem with the Timeserts.
Do it right.....or do it twice !!!
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H2A Semi-Hot Rod Built From A Basket Case
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Additional H2 projects In Boxes.....
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- Suzsmokeyallan
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Ive never had a helicoil come back out in over 30 years of installing them and this is from the 6mm size up to the 12mm size.
That total of pieces fitted would easily add up to over a 200 helicoils on various customers bikes, cars, lawnmowers, generators and weed string trimmers.
timeserts are great too but ill use the helicoil first if its just a simple stripped hole.
Then again im only using the original 'helicoil' brand and not a similiar generic item.
I have however seen a few inserts people fitted come back out, especially the spark plug hole ones.
That total of pieces fitted would easily add up to over a 200 helicoils on various customers bikes, cars, lawnmowers, generators and weed string trimmers.
timeserts are great too but ill use the helicoil first if its just a simple stripped hole.
Then again im only using the original 'helicoil' brand and not a similiar generic item.
I have however seen a few inserts people fitted come back out, especially the spark plug hole ones.
Two strokes, its just that simple.
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- oldjapanesebikes
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Re: Thread repair in cylinders
I just wanted to check what the local price up here would be - do you have a part number for the kit ? Thx !jaybob wrote: I bought a Time Sert Big Sert Kit. Bst thing I ever did. The procedure was simple and with the supplied pro grade tools made a hack like me look pretty good.
Ian
If at first you don't succeed, just get a bigger hammer !
If at first you don't succeed, just get a bigger hammer !
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I just got the price for this same BigSert kit here in Alberta - they want $182 + tax, or $191. That would be about $155 in USD, and by way of comparison an 8mm Helicoil kit is about $40 CDN locally.jaybob wrote:I paid 75 and I repaired 2 holes. I have three inserts left over.
So I will put it at about 15-20 per hole.
These sorts of cross-border price differences are annoying, but common. I may have my brother in Delaware do some shopping for me ......................
Ian
If at first you don't succeed, just get a bigger hammer !
If at first you don't succeed, just get a bigger hammer !
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