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Helicoil Vs Time-sert

aprotogerellis

aprotogerellis

New member
Hi there,

Planning to replace my water pump I'm seriously thinking of getting hold of some kind of thread repair kit. Looking about the two main contenders seem to be helicoil and time-sert. The views on-line seem to be:

- Time-sert seem to be more popular but helicoils more widespread
- Time-sert seem to last much longer
- Time-sert may have a slight raise on the outside which rules them out for use when gaskets are involved (e.g. waterpump)
- Time-sert seem to be more expensive

So, what are people's views on this? Time-sert, helicoil or one of the other contenders (recoil, rethread etc.).

And finally... any idea where to buy either helicoil or time-sert in the UK (over the net preferably).

Cheers!
Alex
 
Alex i used to sell time cert and i can honestly say they are the best on the market and outdo helicoil anytime. They are a carbon steel insert and i can guarantee that the insert would pull out befor you strip the tread they are designed to be stronger than an original thread. Triumph motocycles actually use themin standard engine builds at the factory. The raised edge has to be countersunk. When you purchase a kit they come with all the neccesery drills and taps. Beware of cheap immitation kits only buy original time cert, there are companies out there selling cheep copies who are currently being sued by time cert for copying. If you know someone who puchases wurth goods then get them to get you a kit cheap. Wurth have all the resale rights for time cert. Yes they are expensive if you dont know the right wurth rep. When you do they are actually very cheap. Always haggle with them as they can sell them for next to nothing if they want to. Remember they are all on bonus!!
 
Thanks a lot for the comprehensive reply... I think I'm going for time-sert after all these good reviews.

I am having trouble finding a rep to be honest (and I really only need one kit with 6 or 7 inserts).

One last question, about counterinking... I'm assuming you mean that the hole I need to drill should be countersunk so that the time-sert fits in without the raised edge protruding... do I need a separate tool for this or is it part of the kit?

Cheers!
Alex
 
When you buy a Time cert kit it will come with normaly 5-10 inserts of the required size. Countersink, tap and insert toll. The tool used to insert them will drive it down, once it reches its required depth the insert tool will continue to go in. The way that time certs work is the final threads at the bottom of the insert are not fully formed, when the tool reaches the final threads it pushes them out into the case or whatever it is you have inserted into and then when you unwind it it will leave the insert fully fixed in place with no gaps. NEVER cut Time certs down as you will cut the untapped threads off the bottom and the insert will not stay in place then. Do you know ant mechanics who use Wurth products if so ask them if they can help get you a kit and pay them. I would get one for you but they dont give me great discounts since i left, Very tight company!! Dont buy direct from Wurth if you can avoid it as it will cost you a fortune.
 
Having said all of this a bit of a sinful question:
Given that all I need to rethread is (potentially) the water pump bolts which take pretty low torque anyway, it may be OK to use helicoils if I can't get my hands on time-serts.

I gather there are a few coil-style products, most of which are also tricky to get hold of. Rethread seems to be easier to find - any views on whether it is worth considering (time-serts still being the first choice).

Cheers!
 
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