Jozzah

hi Tony, (and all) after dived into this for 4 days now, i am convinced that there are no 2 identical inboards in the whole world!! haha, every engine seems to be constructed using bits and pieces that were accidnetly available at the time....haha, but on a serious note, yes, i will get my cracked head fixed with inserts, i found a professional company this morning, (even pretty nearby) and the assured me they can do the job! so will go with that, ( and decline on the offer for the BMC head) all thanks for your advice and the final post will be the picture of the repaired head, promise!! jos

hi Tony, many thnx for your feedback, priceless! unfortunately, i have not been clear, i assume because english is not my native language, last pic is of the BMC commander, of which the cylinder head was removed, just to be put on the blue T`154, which head had the 2 cracks. (labeled troostwijk 309) am sure other parts of the Commender are for sale if anyone needs parts at this moment i think i will opt for the "stitching" method of the original T154 head, since it will be a spare engine anyway

sorry guys, clicked on the wrong thumbnail, this one is better, later today i will try to get a pic from the typenr

Many thnx already for your replies! pic 1-2 are from the T154, the 3rd from the BMC, wil try tomorrow to get a pic of the typenr. @ Tracy D'arth could you explain in leeman terms how the stitching is done?? and is it a reliable solution for say the next 10 yrs? never heard of that before, ( but then again, l'm not an engineer....)

hi All, new to this forum but after been reading the first 10 pages i am confident i will find the experts here!! couldnt find any older topic on this matter, i have a t154 in my motorsailer, which runs fine (knock wood!) i do love these old "simple" engines with no computers, so much easier to troubleshoot! i, recently, was able to buy a similar which i want to overhaul and keep in reserve. after taking off the cylinderhead, i noticed the head was cracked, 2 minor cracks between the valves. finding a replacement head seems to be very difficult. i am now offered a BMC 2.5D, seller claims they are identical, they do look identical but for one extra hole in the thornycroft head, pic 1. an array of 5 holes on the right hand side, where the bmc has only 4, pic 2 and 3. Any thoughts on this matter?? thnx in advance! Jos (from the Netherlands.....)