I have a 1600 head I am starting to rebuild which appear good in all aspects bar a small dint in one of the chambers about 10mm up from the deck face. Impression in the surface is around 1mm in all dimensions.
It looks like someone dropped a sharp corner on the head when in storage.
Any view how to treat this... Do I need to get it welded up and the grind back or smooth the edges and ignore if chamber capacities are in balance.
Concerned about any welding breaking away or causing further damage.
I've no experience how robust the heads are!
Hmm, not the greatest detail but, from what I see, I would carefully remove the bits that are standing proud of the surface and then go ahead with the usual pre-rebuild checks including pressure testing, etc.
Good machine shops weld and reshape these all the time, if needed. That said, you don't want to do it if it isn't needed. Norman Racing in Berkeley, and I'm sure others, will repair valve, piston, foreign object damage, corrosion, cracks. The weld doesn't break off.
A friend in Coventry just had his ice-cracked Giulietta block welded up, great job and didn't leak. I can ask who he used, being on your side o' the pond.
Would tend to agree Pete.
Sadly I have one of those personalities which knowing its there will fixate on it a a flaw!
May just enquire about cost a such a small job and bundle as part of the rest of the head work.
I was cruising at 55 mph on Saturday then suddenly a loud rattling sound and running on three cylinders. Rattling sound quickly disappeared but still running on three. First pictures show spark plug from #3 cylinder which had no compression and inside of plenum.
Depending on the state of material ageing and hardness welding make things go soft. If this is adjacent to the fire ring then it can sink into the head. The infamous k series head suffered because 105c plus was enough to soften these heads and blocks come to that which were hardened. Result liner sinkage and fire ring sinkage . I doubt the 105 engine was that sophisticated, well it wasnt.
If you really want to do more then once its deburred peen the material with a cut off nail which will put the material into compression and prevent crack propagation then leave it alone.
The good thing about a thinned wall to the jacket is the thermal stress in the material goes down not up so provided it can still take the pressure stress its better to be thin. There you go your justification for leaving it alone.
Any ex aircraft engineers on here like me will be familiar with the concept.
If you still insist on going further then I have heard good things about the head shop in warrington