General TR Block Crack Repair

[Madflyer]

Very good info I hope I never need it. It is the best of this FOURM. Madflyer

 

[CJD]

And...Dr Mike sent the final insert back, so there is still one left as of today. We managed to save 5 old block so far!

 

[tr4play]

Keith, I know I read the detailed torque figures when I was researching how to repair this crack. I think they were buried in the Lock N Stitch website somewhere. I do remember that the allowable torque is higher than the original cast iron threads, making this now the strongest hole in my block. Here is their website:

https://www.locknstitch.com/

While I love this product, the downside is that they are the only ones who have it. They gouge you severely for the priveledge of using it. The patent is only 3-4 years old, so maybe in another few years, when the patent runs out they will get competition and reduce the prices. You gotta hand it to them for the idea, and it's a very recent development. If I had found this crack just 5 years ago, my block would have been delegated to scrap.

By the way, I have 4 more inserts that came with the kit, and I have no immediate use for them. I can likely figure out a way to spread the costs of the kit between myself and 4 other guys...anybody interested PM me and we can work something out that will be mutually beneficial for all of us...

Hi John,

My TR4 block is cracked in the same exact spot as yours and would very much like to take you up on buying an insert and renting the associated tools to repair mine. Kindly reply back if you still have any left.

Thank you,
Eric
tr4play@cox.net

 

[CJD]

Hey Eric,

I think there is one more insert, so you can keep the tooling...but let me check in the morning to be sure. I'll PM you tomorrow.

 

[ed_h]

Very nice write-up! Very informative.

I wonder if something similar could be used to save a head with a crack between valve seats. The insert would have to be solid--i.e. no threaded hole, but maybe a hex head that could be machined off after insertion.

Ed

 

[tr4play]

Hey Eric,

I think there is one more insert, so you can keep the tooling...but let me check in the morning to be sure. I'll PM you tomorrow.

Hi John,
Were you able to look and see if you had that one last one?
Kindly advise. Thank you,
Eric

 

[CJD]

Shoot...so sorry Eric. I have one and PM'd with details.

 

[CJD]

Well...Eric now has the last of the inserts. I am glad they all went to good use. Sorry that future owners will have to start again with a new "kit".