new cylinder head refitting

s1mes · Oct 23, 2011

i'm just about to fit a new cylinder head to my 300 tdi, what's the best stuff to use to clean the block before fitting, i've already used rough paper to remove any remminants and to make the surface shiny, cheers simes

RKServicing · Oct 23, 2011

Use wd40 or similar, a flat block and a 1200 grit paper. Take the scratches away that youva made with your rough paper. Then clean off with brake cleaner and use an engineers flat edge to make sure you haven't fooked the block and it's still completly flat, also while your at it Did you find the cause of your old head failing, and it's not necessarily your head gasket, did you look for a water leak to cause the over heating, or wasit the cambelt let go? Genraly if you haven't got the Knowhow to maintain or know what to clean your block with you shouldn't be doing such a job, next time get it done properly, in my experiences. This type of job more often than not ends up in the garage anyway to be finished and also often costs more than the original job!

I'm all up for diy, but have a knowledge. Alot will say only one way to learn, and I agree. But if this gives up in 3 weeks time and your at the side of a motorway. Your safety is much more important that the few quid you MIGHT have saved, atleast have somone who does
Know what they're doing helping you.

s1mes · Oct 23, 2011

the head had cracked in two places, it's not the first time i've done this job, but it is the first time using a brand new ready built cylinder head, it's an apparant wind up that i needed a special cleaner , thanks for the advice anyway tho

martinhollings · Oct 23, 2011

RKServicing said:
Use wd40 or similar, a flat block and a 1200 grit paper. Take the scratches away that youva made with your rough paper. Then clean off with brake cleaner and use an engineers flat edge to make sure you haven't fooked the block and it's still completly flat, also while your at it Did you find the cause of your old head failing, and it's not necessarily your head gasket, did you look for a water leak to cause the over heating, or wasit the cambelt let go? Genraly if you haven't got the Knowhow to maintain or know what to clean your block with you shouldn't be doing such a job, next time get it done properly, in my experiences. This type of job more often than not ends up in the garage anyway to be finished and also often costs more than the original job!

I'm all up for diy, but have a knowledge. Alot will say only one way to learn, and I agree. But if this gives up in 3 weeks time and your at the side of a motorway. Your safety is much more important that the few quid you MIGHT have saved, atleast have somone who does
Know what they're doing helping you.

dont think a reply like that is needed a simple answer to a simple question is all that was needed

i use a bit of methylated spirit to clean things up but make sure you get any oil or water out of the head bolt holes but you sould not realy use rough paper (i guess ypu mean wet and dry or sand paper) to clean the block face sould realy be scraped i use a old wall paper scraper of a stanly knife blade but you need to be carefull not to scrach the face

RKServicing · Oct 23, 2011

I did give an answer. And I hope the job goes well. Sorry for the rant though Ive had a whole week of fixing other peoples mess, anyways. Hope your sorted now

s1mes · Oct 26, 2011

yes thanks it's all good and sweet, now the mot's due! does it never end

new cylinder head refitting

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