i have a spare head which i wanted to rebuild, i dont know its history, got it measured today and it came out at 135.6mm, 10 guides need putting and it needs pressure testing, i have a few questions before i go ahead and rebuild
1. has this head been skimmed before
2. how much more can i skim off it been told 0.3mm has to be taken off therefore taking it to around 135.3mm is this to much as the head is going on my turbo
3.never used this company before they want 25 quid for a skim 25 for pressure test, 60 quid to purchase 10 guides 29 quide for inserting guides, and 60 quid to cut valve seats and valves does this sound ok
4. if head is rebuilt can it be stored and used eg year later or does it have to be used straight away.