yet another problem bloody td5

Sorterd no1 was cracked ..(.easy fix tbh .ground it out and welded it up a hour job ..

one day we will have a discovery which will start and run without a issiuse ,, but until that day comes we will prolong ,, right and a another issiuse , built everything back up , switched ignition on engine cranks no fuel pump priming and m and s lights flashing on dash I had the battery lead off while I welded the injector wall , , locked car unlocked it , left key in iginion no change carnt see any fuses blown , as my ecu lost some sort of memory , didn't have time to try plug it in , tbh any ideas , few pics of the injector seat weldedup

bit hard to get pics little dark

Crickey. That was brave to weld and grind in situ.

Why?

I imagine that after welding and grinding
youd have fragments of ally and grinding wheel everywhere.

Five Pots said:

I imagine that after welding and grinding
youd have fragments of ally and grinding wheel everywhere.

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yeah, but that can be next weeks problem,lol,

adaptorman said:

Why?

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Stupid to weld an alloy head in situ and built up,the whole head should be stripped,degreased and pre heated prior to welding.(Not even thinking about letting it cool slowly in a controlled manner after) Esp bearing in mind the poor reputation of the casting in the first place.The material is not too clever and has a lot of impurities in it,any attempt at a weld repair should take all precautions possible.Or it will only end in tears and make yet another clever English engines reputation worse.

eightinavee said:

Stupid to weld an alloy head in situ and built up,the whole head should be stripped,degreased and pre heated prior to welding.(Not even thinking about letting it cool slowly in a controlled manner after) Esp bearing in mind the poor reputation of the casting in the first place.The material is not too clever and has a lot of impurities in it,any attempt at a weld repair should take all precautions possible.Or it will only end in tears and make yet another clever English engines reputation worse.

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Completely agree but that weld looks good enough once all cleaned up to seal against the O ring. I'd be more worried about all the grinding dust thats now sitting in your oilways. What form of welding did you use TIG?

Five Pots said:

Crickey. That was brave to weld and grind in situ.

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eightinavee said:

Stupid to weld an alloy head in situ and built up,the whole head should be stripped,degreased and pre heated prior to welding.(Not even thinking about letting it cool slowly in a controlled manner after) Esp bearing in mind the poor reputation of the casting in the first place.The material is not too clever and has a lot of impurities in it,any attempt at a weld repair should take all precautions possible.Or it will only end in tears and make yet another clever English engines reputation worse.

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Not that little bit, very little heat to the head at all. And if care is taken no grinding or metal will get into the engine.

Who ever did that did a quality job....... well done

your all welcome to your own thoughts tbh , personaly everything was cleaned out , and depending what you use , u don't end up with grinding dust and remains everywere tbh ,
area was cleaned, ground out and welded , basicly a 30mins to sort and saved a lot of time, effort locating another head,h,gasket bolts and gaskets , saved me a dame fortune seeing what companies charge for new and second hand heads/ engines ,
so im not complaing tbh ,,,
if u guys pref a differnert option ,then go for it ,,,just thought id share a very simple diy fix ...without a hole in your pocket, ps was tig welded with alloy filler , I make plenty of custom other parts

Thor1950 said:

Not that little bit, very little heat to the head at all. And if care is taken no grinding or metal will get into the engine.

Who ever did that did a quality job....... well done

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myself ,, thanks for the positive comment ,, ive built a fair amount of projects tbh , I call diy style with good results,,,

Not good,even as a diy job.Even as simple as the valve stem seals being fried.Its not hard to make a small Tig weld look good,but you cant guarantee freedom from porosity/cracking without a proper strip,degrease,vee out,preheat and weld.Then recut injector hole and pressure test.
You might be lucky and get away with it - good luck if you do.Just don't try charging it out to a customer,it will bit you on the arse and destroy any good reputation you are trying to build.

eightinavee said:

Not good,even as a diy job.Even as simple as the valve stem seals being fried.Its not hard to make a small Tig weld look good,but you cant guarantee freedom from porosity/cracking without a proper strip,degrease,vee out,preheat and weld.Then recut injector hole and pressure test.
You might be lucky and get away with it - good luck if you do.Just don't try charging it out to a customer,it will bit you on the arse and destroy any good reputation you are trying to build.

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its my own vechical not anyone elses , not had a weld crack yet, i weld more difficult items then this,I weld by trade , im happy with it , simple
infuture ill not post , again simple