Just taken the cylinder head off my ZX 1.9d and need to take it to the enginners for a skimming.
I have stripped off the extras from the head but wonder if I need to remove the valves too? There seems to be about 1mm recess in the head that the valves sit in? Can I get away with this?
Thanks in advance,
Billy
Remove valves before skiming head?
Moderator: RichardW
Taking the entirely opposite view, I think they will charge you quite a bit extra, as you are not just asking them to skim the head, but strip and dismantle it too, quite a bit of work which they won't be doing for nothing, and they will be charging you for the time accordingly- the clean and skim will be the cheap part of the job, believe me........its a bit like taking your block in for a rebore and not taking the crank and pistons out first!!!
Should we just take this with a grane of salt [?][8)]
Firstly : I assume the cam axle is removed.
Secondly : the shop has the snap on quick tools for the job, and I suppose they answer the phone if you like to re-assure yourself before the job.
Thirdly : YES I know it's not exactly 100% the same engine - but last time I did for a BX XUD head, it was no extra charge. But yes - normally would be some 5-10£ extra charge according to labour.
Firstly : I assume the cam axle is removed.
Secondly : the shop has the snap on quick tools for the job, and I suppose they answer the phone if you like to re-assure yourself before the job.
Thirdly : YES I know it's not exactly 100% the same engine - but last time I did for a BX XUD head, it was no extra charge. But yes - normally would be some 5-10£ extra charge according to labour.
To clear things up, yes the cam shaft is removed, as are all other peripherals.
I don't own a valve compression tool (perhaps a good investment for the future), so removing the valves will be a bit of a problem. Maybe paying £10 labour isn't too much for an easier life?
On the other hand, are you saying that the valve <b>will</b> need to come out, BXBodger?
I don't own a valve compression tool (perhaps a good investment for the future), so removing the valves will be a bit of a problem. Maybe paying £10 labour isn't too much for an easier life?
On the other hand, are you saying that the valve <b>will</b> need to come out, BXBodger?
Skimming could be done with the valves in situ, but it's not normal practice- when the head is being skimmed it's wallowing in a bath of abrasive liquid which you certainly won't want to find its way into the springs, valves, guides, collets, etc!- a reputable engineer will want them removed first.
I am not sure if the ZX engine has rubber valve guide oil seals or not- if it does then the chemical cleaner they should use before skimming will ruin them if they are not first removed.
Are they really only charging a tenner for dismantling- if so, then let them do it- it's a bargain[:)], but if it's only a metaphorical tenner, get a written quote first!!!!
I am not sure if the ZX engine has rubber valve guide oil seals or not- if it does then the chemical cleaner they should use before skimming will ruin them if they are not first removed.
Are they really only charging a tenner for dismantling- if so, then let them do it- it's a bargain[:)], but if it's only a metaphorical tenner, get a written quote first!!!!