Pulled Threads.-

[Sea Rider]

Is there a repair system besides Hellicoils to repair pulled threads on a crank case ? If so is it an easy fix or need to send crankcase to a machine shop to do the work right ? Please advise.

Happy Boating

 

[GA_Boater]

I like Time-Serts more than Heli-Coils. Kits for both come with the taps for DIY installation.

Time-Sert is a solid piece instead of a coil spring affair.

 

[Sea Rider]

Thanks, will check for them, assume that comes in different sizes and lengths ? Will they hold 30 NM when torquing M10 bolts ?

Happy Boating

 

[GA_Boater]

I used them for 65 ft-lbs or 88 NM. 30 NM is 22 ft-lbs, so yes it will work.

The website for metric sizes, you will have find a distributor or get them online - http://www.timesert.com/html/mtrcsert.html

What are you working on?

 

[Scott Danforth]

timeserts are the only fix for northstar head bolts pulling out......yeah they are good, come in many sizes and are a bit pricey.

 

[Sea Rider]

I used them for 65 ft-lbs or 88 NM. 30 NM is 22 ft-lbs, so yes it will work.

The website for metric sizes, you will have find a distributor or get them online - http://www.timesert.com/html/mtrcsert.html

What are you working on?

Good to know that, will check link, seems that one or two head bolts threads on powerhead will be shot dead on next head gasket change due to salt seizure with consequent broken bolt and its heat removal done on last restoration, so planing way ahead of time to have those handy. Will check Amazon. Thanks both.

Happy Boating

 

[QBhoy]

Apart from heli coil....devcon would be my second thought.
Fire it in there, leave to set and tap the thread.

 

[Sea Rider]

Timesert kits are nice and costly, but for the non experienced seems bit complicated to install, too much tooling, have worked with Heli Coils before. This is the OEM cylinder head bolt with measurements.



Was wondering if this repair kit would be appropriate to fit most of the 22 mm threaded extension ?



Assume a M10 bolt is a 8.0mm diam bolt as in pic, right ?
1.5 ? stands for inches/centimeters
Please advise..

Happy Boating

 

[boobie]

Yes.........

 

[Sea Rider]

Would you say that the posted bolt pic corresponds to a fine or coarse thread ? 1.5 stands for 1.5 cm or 15 mm Heli Coils, what if too short to properly screw in a 22 mm bolt thread ? Will bolt be possible to torque it right to 30 NM cyl head specs ?

Happy Boating