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Austen Menze
Goo Roo
WA
GT-TL

Posts: 1231
Reg: 07-2009

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Sunday, October 31, 2010 - 10:42 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Okay what's the best way to prepare the block when slapping on a new headgasket?

Just scrape off the residue with a blade?
Austen Menze
Goo Roo
WA
GT-TL

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Reg: 07-2009

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Sunday, October 31, 2010 - 10:54 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I'm worried about using scotchbrite and things like that as fine particles will drop down into the oil and water galleries.
Walter Gillmore
DieHard
QLD
TT JZZ30

Posts: 855
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Sunday, October 31, 2010 - 11:37 pm, by:  Walter Gillmore (Cl33pa) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

stanley blade does the job well enough. dont use anything abrasive as you will be taking small uneven amount of material off. once all the stuff has been scrapped off you can use a long file wrapped in very fine say 800 grit linishing paper, use even long strokes across the top of the block. usually run diagonally. dont apply too much pressure when doing this. just enough to clean the rest of the crud off.
Austen Menze
Goo Roo
WA
GT-TL

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Sunday, October 31, 2010 - 11:40 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

okay that makes sense.

Should I be worried about particles getting into the oil and water passages?
Walter Gillmore
DieHard
QLD
TT JZZ30

Posts: 856
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Sunday, October 31, 2010 - 11:48 pm, by:  Walter Gillmore (Cl33pa) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

if its a bare block then dont worry. just flush it all out before putting it back together. but if its still in the car, with sump and oil etc. then yes. block oil galleries. the water galleries arent as critical but you dont want any large chunks getting in there that you cant flush out once you do a cooling system flush before running the engine.

but you'd be a fool not to flush and change the oil as well.
Shane Haverkamp
TryHard
nsw
soarer TT

Posts: 421
Reg: 10-2007

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Monday, November 01, 2010 - 10:57 am, by:  Shane Haverkamp (Havabeer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

another trick is to get a really wide bandsaw blade and grind it down so it has a sharp edge.

wrap the handle in cloth and duct tape and voila you have a nice scraper. we make them all the time at work as we have the spare parts lying about.


if not buy a razor blade scraper from paint shops or hardware shops. its pretty much a long stick that holds a razor blade.


might wanna stuff some rags or something down the cylinders so nothing gets down in there.

i bought this gasket removal stuff which helped getting really thick subborn bits off a gearbox paper gasket. though i'm not sure if it would effect anything if it got into your oil or coolant. stuff reacted with the rubber gloves i was wearing and was burning my hands
Jeff Bedsor
DieHard
QLD
TT

Posts: 963
Reg: 10-2006

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Monday, November 01, 2010 - 11:23 am, by:  Jeff Bedsor (Jeff_bedsor) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I've always used a wire buff on a grinder after you have scraped all the old stuff off.
Austen Menze
Goo Roo
WA
GT-TL

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Monday, November 01, 2010 - 02:35 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

What do you plug the galleries and bores with?
Jeff wouldn't the wire wheel really rip up the surface?
Jeff Bedsor
DieHard
QLD
TT

Posts: 964
Reg: 10-2006

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Monday, November 01, 2010 - 03:10 pm, by:  Jeff Bedsor (Jeff_bedsor) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

No it's cast steel, it just cleans and polishes it. Just blow everything out with compressed air afterwards.
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1238
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Monday, November 01, 2010 - 11:41 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Ah cool.

Yep I gave it a hit with the stanley blades and most of the gasket stuff comes off quite easy. There are some tough bits though.

Just stuffed rags down the oil galleries and tried my best not to get any crap in the bore or water galleries.. but of course I did.

I don't have an air compressor so I'll have to to buy some cans of compressed air. BAH!
Walter Gillmore
DieHard
QLD
TT JZZ30

Posts: 859
Reg: 07-2009

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Tuesday, November 02, 2010 - 12:27 am, by:  Walter Gillmore (Cl33pa) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

save up for a compressor. best 200 bucks you'll ever spend.
Mark Bryant
Tinkerer
tasmania
2jz na/t and tt

Posts: 84
Reg: 08-2010

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Tuesday, November 02, 2010 - 07:03 am, by:  Mark Bryant (2jz_nat) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

when i did myn i used a industrial vaccum(one used for sucking up broken pieces of brick)or just use a normal house one.then i blew all the gallerys out with a compressor.it work a treat and never had any problems.
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1242
Reg: 07-2009

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Sunday, November 07, 2010 - 11:02 am, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Used razor blades, then scotchbrite, then 2000grit.

Walter I took your advice and got a compressor and some other bits, this made life a lot easier :-)

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