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Time-sert vs Helicoil?

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24 Dec 2017 07:53 #776578 by zed1015
Replied by zed1015 on topic Time-sert vs Helicoil?
Remains of the bolt should easily drill out with a sharp HSS drill bit and some cutting fluid.
The core should be relatively soft but if not use a cobalt bit.
Carefully centre punch and start with a 3mm - 1/8th inch bit.
Once you got that in go 4mm the finish with 5mm.
If you are dead centre the thread coil will be left and should either pick out or easily clear with an M6 tap.
Stock bolt is never as long as the threaded hole so if you do catch the thread towards one side a longer bolt will still tighten.

AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
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24 Dec 2017 09:00 #776580 by les holt
Replied by les holt on topic Time-sert vs Helicoil?
I personally have had good luck with the helicoils and not with the key locking inserts. Not enough experience with the timeserts to judge so I did a little digging to see what I could find that was fact based. Found this youtube video that had merit to it's testing.


Les Holt
PDM Custom Fabrications
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24 Dec 2017 11:19 #776583 by slmjim+Z1BEBE
Replied by slmjim+Z1BEBE on topic Time-sert vs Helicoil?
Hi les holt,
That's very good empirical data. Thanks for finding & posting that!

Good Ridin'
slmjim & Z1BEBE

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A Rider looks at your odometer and tags.

1973 ('72 builds) Z1 x2
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1975 Z1-B x2
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26 Dec 2017 07:17 #776624 by Old Man Rock
Replied by Old Man Rock on topic Time-sert vs Helicoil?
Ok... just my 2 worthless cents on this subject matter.....

Regardless of the manner you go, PREP is everything.
For us DYI, heli coils are easier to prep/install henceforth easier not to F-Up..... As others mentioned,, certs require more medal to be removed and will require ideal insertion depth accuracy for ideal installations, cover fits, leak prevention etc...

Now key logic for CAM cap / valve cover bolts, engine case/cover bolts etc... How much torque on the bolt are you requiring... that's right very little - SNUG fit only.

Conclusion, save your self a huge headache and go with Heli coils for most applications you'll be just fine.

OMR

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26 Dec 2017 12:52 - 26 Dec 2017 12:55 #776629 by Scirocco
Replied by Scirocco on topic Time-sert vs Helicoil?
Old Man Rock wrote:

Ok... just my 2 worthless cents on this subject matter.....
Regardless of the manner you go, PREP is everything.


+1

For a good centered bore i use special center punches (a broken cam cap bolt).

Static or adjustable center punches dependent of the bore diameter.




and than a counter clockwise drill bit, mostly the broken part of the threat came out easily during this process!!!




Michael
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Last edit: 26 Dec 2017 12:55 by Scirocco.
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