Small headbolt torque

[bindian]

Eric, I think this is it.

Advanced marine repair solutions - Wärtsilä

Wärtsilä’s repair services for large commercial vessels: in-situ machining, reconditioning, metal stitching. Formerly offered by QuantiServ and Lock-N-Stitch.

www.locknstitch.com

I gave my first issue with the article to a friend. This is the issue https://ertelgiftshop.com/antique-power/antique-power-may-jun-2022
This is the article name and author....

• A Stitch in Time
  Cold repair for broken cast iron
  text by Rick Mannen

It is a fascinating process to read about.
hugs, Brandi

 

[ponytug]

Lock-n-Stitch is a different technique, using steel (or aluminum in aluminum parts) bolts, and repeated drilling that make a very strong, gas tight repair. There is a fun YouTube video here;

I have never seen a brass screw used to fix (braze?) cast iron. I find it hard to imagine it has much strength, so I am interested to see how it works out. @Patrick 1068 I hope it was worth your while. Thanks for sharing it.

All the best,

Peter

 

[bmaverick]

Hello All,
I had to repair the head on my 186d, and I found the torque specs for the eight large head bolts which is 79 lbft if I'm not mistaken, but I cannot however find the torque specs for the three smaller bolts that surround the push rods. Does anyone happen to know the specs?
This is the old school repair that I had to do because I can't find a used head for it for less than $1,200. Hopefully this works!View attachment 747058View attachment 747058View attachment 747058View attachment 747059

See attached

 

[careyo63]

At least it's not in japanese. Close though.