good machine shops for helicoiling

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Old Nov 26, 2002 | 12:27 PM
  #1  
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Default good machine shops for helicoiling

ok i have this ge block, that ive been talking about in other posts, but im curious about having the mains rehelicoiled and what not...

anybody know of a good place to do them? sooner the better...

someone also suggested keyserts, but im not too familiar with those...so i dunno about all that...but anyway here is the other post if it helps clear any other questions up
https://honda-tech.com/zerothread?id=342420

thanks in advance, if its too difficult for me to get fixed, i am going to sell it, see signature...thanks guys
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Old Nov 26, 2002 | 12:28 PM
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Default Re: good machine shops for helicoiling (SpoolinLS)

i would recommend timeserts over helicoils
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Old Nov 26, 2002 | 01:20 PM
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Default Re: good machine shops for helicoiling (sgT)

how do those work? are they similar to keyserts?? let me know if you have any info, or can help me out with he machining in any way..

Kevin
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Old Nov 26, 2002 | 05:44 PM
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Default Re: good machine shops for helicoiling (SpoolinLS)

help a fella with problems out...just need a good place that can do the work nicely for me...would import builders or golden eagle do anything along those lines?
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Old Nov 26, 2002 | 07:56 PM
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Default Re: good machine shops for helicoiling (SpoolinLS)

and again?? anybody know about timeserts? or helicoils
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Old Nov 26, 2002 | 07:59 PM
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Default Re: good machine shops for helicoiling (SpoolinLS)

there arent any machine shops in your area ?
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Old Nov 26, 2002 | 08:01 PM
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Default Re: good machine shops for helicoiling (jonny5)

yes, but none that i would let touch my things
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Old Nov 26, 2002 | 11:57 PM
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Default Re: good machine shops for helicoiling (SpoolinLS)

Hey SpoolinLS,
I can't really offer much help with your situation since I don't know of any shops in your area, but I have some info about one of the possible solutions. I've used both (Keenserts and helicoils) to repair fixtures and other parts (never engines, so I can't recommend one over the other there).
To use helicoils, you have to drill and tap the damaged thread to a larger size for the helicoil. The helicoil itself is basically like a spring (for lack of a better word) that screws into the hole and once you have it slightly below flush, you use a punch to break off the metal tab at the bottom of the helicoil. This prevents it from screwing in any further or backing out. The inside of the helicoil would be the same thread pitch as the damaged one you're fixing.
To use a keensert, you use the recommended size drill and tap for the keensert you are using. The damaged thread is drilled and tapped to accept the outer thread of the keensert, and the inner thread of the keensert is the same thread pitch as the damaged thread (unless you chose otherwise). You install the keensert by simply screwing it in until it's slightly below the mating surface of the part you're repairing, then you drive the pins (on the keensert) down with the tool supplied. In my experience, I preferred using keenserts over helicoils, but like I said, I've never used them on an engine, so you need to talk to someone who has experience on that.
Good luck fella!
Here's a good link (with pix) that better explains keenserts:
http://www.carrlane.com/Product/02TC08GI06.htm


[Modified by The Mick, 4:02 AM 11/27/2002]
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Old Nov 27, 2002 | 07:21 AM
  #9  
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Default Re: good machine shops for helicoiling (The Mick)

thanks bro for the help...

edit: im not necessarily looking for a local shop...id be willing to ship it both ways for someone with experience to mess with it


[Modified by SpoolinLS, 11:22 AM 11/27/2002]
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Old Nov 27, 2002 | 07:44 AM
  #10  
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Default Re: good machine shops for helicoiling (SpoolinLS)

Call golden eagle..since they sleeved it...they may be able to do the keenserts too.
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Old Nov 28, 2002 | 10:11 PM
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Default Re: good machine shops for helicoiling (GraphiteAccord)

up top
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Old Nov 30, 2002 | 09:58 PM
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Default Re: good machine shops for helicoiling (SpoolinLS)

up top
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Old Dec 1, 2002 | 11:17 AM
  #13  
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Default Re: good machine shops for helicoiling (SpoolinLS)

bump
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Old Dec 2, 2002 | 10:26 PM
  #14  
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Default Re: good machine shops for helicoiling (SpoolinLS)

and again...
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Old Dec 2, 2002 | 11:26 PM
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Default Re: good machine shops for helicoiling (SpoolinLS)


What exactly is wrong? The helicoils that are in it are the wrong size or are they installed crooked?

I'm trying to figure out if this will require the holes to be filled (welded) and then everything to be redrilled/retapped.

I know a guy who can fix it. It won't be cheap though. If you are set on fixing this block, it might be worth it. I need to know exactly what is wrong.

Sonny
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Old Dec 3, 2002 | 11:02 AM
  #16  
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Default Re: good machine shops for helicoiling (Sonny)

well when you thread the bolts into the threads, they just wobble around like they are too big for the bolts...then if you tighten them all the way down they get tight for a second, unless you apply pressure and say try to move them, then they start to wobble slightly again...

thats really the best way that i can explain it...im not sure if it would require all the holes to be filled and retapped or not...but if you could provide any help or a price that would be greatly appreciated

Kevin
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