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K-Bar
 Post subject: Block skimming
PostPosted: Tue Oct 18, 2005 11:37 pm 
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848cc
848cc

Joined: Wed Sep 14, 2005 5:48 pm
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Location: Perth,WA
what are the reasons for this???

to raise compression??
to make sure the face is flat??

if i did this, wouldnt my pistons rise slightly above the blocks surface..
well thats how it looks for mine..

is that ok if i was going to use a 12G295?
1100 block and pistons.

thanks.

kaden.

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willy
 Post subject:
PostPosted: Tue Oct 18, 2005 11:38 pm 
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1360cc
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Joined: Mon May 03, 2004 6:46 pm
Posts: 13688
Location: ADL
Sometimes it is to true the block.
usually always.
For C/R raising, the head is usually shaved to piss, flat tops, etc.
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poeee
 Post subject:
PostPosted: Tue Oct 18, 2005 11:42 pm 
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Joined: Tue Mar 16, 2004 8:55 am
Posts: 11264
Location: Geelong, Victoria
It's used to get them flat.

Usually the case with Mini engines is that after a while and some blown head gaskets, between the cylinders erodes a little, causing it to blow head gaskets more often. This has happened to Rodney, even after a head reco.

When rebuilding an engine, it is stupid not to get it shaved flat. If it wasn't done and causes a problem, then the engine needs full pulling down.

You usually don't take enough off the block for the pistons to poke above.

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K-Bar
 Post subject:
PostPosted: Wed Oct 19, 2005 12:07 am 
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Location: Perth,WA
ahhhh ok....fair enough.

price range for this to be done??
seems like a pricey thing to do..

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poeee
 Post subject:
PostPosted: Wed Oct 19, 2005 12:16 am 
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Location: Geelong, Victoria
I would be guessing the same price as getting the head skimmed. 8)

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willy
 Post subject:
PostPosted: Wed Oct 19, 2005 12:20 am 
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Location: ADL
Head skim = $40
Use that as a guide :)
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drmini in aust
 Post subject:
PostPosted: Wed Oct 19, 2005 6:43 am 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39757
Location: near Baulkham Hills, NSW
Takes a little more work to clamp block up before machining. I usually charge $50 for Mini blocks... :wink:

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manofaus
 Post subject:
PostPosted: Wed Oct 19, 2005 7:55 am 
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Joined: Wed Jun 29, 2005 6:06 pm
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Location: Newcastle
Motor builders like to deck the block to make sure that the head is square to the cylinders as well. Usually done when you open up the bore.
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J_A_M
 Post subject:
PostPosted: Wed Oct 19, 2005 10:19 am 
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my engine machinist wanted $50 to do mine. I didn't get it done.
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drmini in aust
 Post subject:
PostPosted: Wed Oct 19, 2005 4:42 pm 
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Location: near Baulkham Hills, NSW
Bad JAM. Bad....BAD!! :lol: Cheapskate.... :lol: 8) :wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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64morris
 Post subject:
PostPosted: Wed Oct 19, 2005 5:14 pm 
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Joined: Sun Feb 06, 2005 3:32 pm
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Location: Brisbane
just make sure you ask them not to machine the tab where the engine no. is...

i had my new engine all built up and put it, got the car home and when i went for mod plate for the seats the guy asks where my engine no. was :roll:

i wont tell you how i got by that one... :wink:

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drmini in aust
 Post subject:
PostPosted: Wed Oct 19, 2005 5:26 pm 
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Location: near Baulkham Hills, NSW
64morris wrote:
just make sure you ask them not to machine the tab where the engine no. is...

i had my new engine all built up and put it, got the car home and when i went for mod plate for the seats the guy asks where my engine no. was :roll:

i wont tell you how i got by that one... :wink:

Yeah I NEVER take that pad off. But most shops don't give a stuff..."deck it sir? No problem..." :lol:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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awdmoke
 Post subject:
PostPosted: Wed Oct 19, 2005 5:41 pm 
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Location: Rockingham - Collie WA
64morris wrote:
just make sure you ask them not to machine the tab where the engine no. is...

i had my new engine all built up and put it, got the car home and when i went for mod plate for the seats the guy asks where my engine no. was :roll:

i wont tell you how i got by that one... :wink:

Magic Marker? :lol:

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64morris
 Post subject:
PostPosted: Wed Oct 19, 2005 8:42 pm 
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close enough :lol:, but it got me through roadworthy and rego with no problems so im happy

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Rodney
 Post subject:
PostPosted: Fri Oct 21, 2005 10:00 am 
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Joined: Mon Oct 25, 2004 9:52 am
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Location: Clifton Springs, Victoria
I'm getting a block skimmed as we speak. Get it back next week for engine rebuild so will tell you the price when i pick it up.

Cheers

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