alfaman Posted February 28 Share Posted February 28 10 hours ago, miketomcat said: Cracks between valves are common and can be run like that, it's not great but it won't cause any noticeable problems. Cracks between cylinders, oil/water ways or like one of mine in the inlet tract will be a problem. Mike It would seem that Mr Turner has already given me an answer to my seemly minor worry. Quote Link to comment Share on other sites More sharing options...
miketomcat Posted February 28 Share Posted February 28 Absolutely, I've run a worse one than that for several years including heavy towing. Mike 1 Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 28 Share Posted February 28 3 hours ago, miketomcat said: Absolutely, I've run a worse one than that for several years including heavy towing. Mike Same - the last one i removed was a lot worse but it wasn't due to those cracks that my HG went. Engine was running perfectly. I would happily fit the head in alfamans pictures. Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted February 29 Share Posted February 29 My local engine re-builder has a crack filling process for alloy heads and blocks that uses a liquid chemical metal and pressure to fill cracks. They developed it for the top fuel engines they build, but found it was also very good for TD5's However those cracks look small enough to simply fill with carbon during use 2 Quote Link to comment Share on other sites More sharing options...
Arjan Posted February 29 Share Posted February 29 Mr. R. Turner knows what he's talking about. Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 29 Share Posted February 29 7 hours ago, Nonimouse said: My local engine re-builder has a crack filling process for alloy heads and blocks that uses a liquid chemical metal and pressure to fill cracks. They developed it for the top fuel engines they build, but found it was also very good for TD5's However those cracks look small enough to simply fill with carbon during use Thats interesting as many declare the 200 heads scrap once they see those cracks between the valves. I kept mine. Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted February 29 Share Posted February 29 15 minutes ago, reb78 said: Thats interesting as many declare the 200 heads scrap once they see those cracks between the valves. I kept mine. It is interesting, It's saved many a TD5 head Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted March 1 Share Posted March 1 @miketomcat I've got a pot of Devcon titanium putty that was left over from a job, we could always have a go with that if you've got a dead head as a donor? 2 Quote Link to comment Share on other sites More sharing options...
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