• Hi Guest!
    You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

General TR Block Crack Repair

Share this page

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!
 
CJD said:
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...
Click to expand...
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
 
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.
 
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
 
Last edited:
CJD said:
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.
Click to expand...
Hi John,
Were you able to look and see if you had that one last one?
Kindly advise. Thank you,
Eric
 
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".
 
Back
Top