Hi All - I hope im putting this in the right section. I want 60th machining off my pinto cylinder head and ive been quoted 150 + vat they say it is this price because its equiv. to 6 cylinder head machines. That works at 10th a head is all a milling machine can remove at once or are they ripping me off by saying they can only take 10th off at one time? Thanks for any replys Jacko

Ripping you off, take it to Bradford Grinders.

The time is taken up by clocking the block in place, so it is dead level before making a pass. This may take upto 20 minutes if the block does not have a parallel base, 10 mins if it does. Each pass takes about 2 minutes, a set of tips costs about £60 and you would probably get about 100 passes out of a set.

Work it out!!

maybe I'm reading it wrong, but isnt a 10th 6 times more than a 60th?

6 passes at a 10th each time will be 6/10ths.

or am I wrong?

Mark

I think he wants 6/10 milled off and the milling machine will only take 1/10 per pass.

he means thousandths. If he took 6/10" off there'd be valve marks on the bottom of the sump . Take it off with the angle grinder and ask them to just finish it off for you

That's why i said i think
I did not put the inch mark behind the figure Peteff,you did.
I was talking about 1/10 of a millimeter hence the absence of the international sign for inch (".
I did not realize that with six tenth of a millimeter removed the valves would make marks on the bottom of the sump.
I'm learning every day.

[Edited on 5/12/04 by Cita]

I just realised that I read it wrong, it is the head that is being skimmed. I am sure that 60 thou is the removed dimension, which is 1.54mm - now that should only cost £20. The pinto head is a parallel head, can be lifted onto the deck by hand, and the protection required is minimal - yep, you are being ripped off - big time

hello jacko i live in nottingham and local engineering shops would do it for about £ 50 so you are being ripped off
might be less for cash on a saturday morning
thats for 60 thou imperial
if you need numbers u2u me and i will pull a favour in and get a proper price
cheers dave

[Edited on 5/12/04 by dblissett]

[Edited on 5/12/04 by dblissett]

I was exaggerating a bit. If he'd asked for an estimate to take 0.060" off we'd have known what he wanted. I think we're all agreed he's being ripped off though. edit:- three years ago we had a pinto head skimmed 0.90", new seats cut and bronze guides fitted for £80+vat. at John Noble motorsport.



[Edited on 5/12/04 by Peteff]

A 60 thou skim is 2 passes, 50 + 10, even £50 is a shaft

RIP. OFF! I can only assume they can't be arsed to do the job, hence the high price.

Peteff,i was joking as you know and reading the post's I THINK HE'S BEEN RIPPED

hello mark and jacko
when i said £50 it was based on a estimate of about 1 1/2 hrs time i am not trying to shaft anyone as i said i would pass the numbers on
i was just trying to show that £150 was way over the top and trying to help
dave

HI-All: Thanks for all your replys sorry for misleading you all it is 1.54mm I want removing. I am trying to find a local company around the Hull area. If I dont have any success I will get in touch with you Dave for the numbers you mentioned. Jacko