 Question for all you head guru's |
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| rtalich |
 Oct 14 2006, 10:09 AM
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#1
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Member  Group: Members Posts: 279 Joined: 25-September 06 From: Bellevue, WA Member No.: 6,913 Region Association: None  |
Can anyone tell me if these heads have been modified and/or why they have a little 'step' bored into them? The first picture shows a 'normal' head. Notice the flat surface shown circled.
 These next two pictures are the heads in question. Have these been machined/modified in any way? If so, why?   Thanks, Rob |
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| davep |
Oct 16 2006, 10:03 AM
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#2
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914 Historian Group: Benefactors Posts: 5,151 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
Len Hoffman is member 'HAM Inc'
You may want to email him a link to this thread to get his attention. He is busy doing a lot of heads for us right now, so his online time is very limited. BTW, Jake has the archives of the 4th Dimension radio files. Anyone rebuilding an engine should download these 'broadcasts'. They are truly a wealth of information. I was part way through doing my own heads, ready to install new guides when I decided to send one set to Len. The other set will wait until I decide what kind of an engine to build. I could not see any cracks in my 4 2.0 heads, but I'll wait for the masters prognosis. |
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Posts in this topic
rtalich Question for all you head guru's Oct 14 2006, 10:09 AM
Bleyseng Looks like a piece of metal was loose in that one ... Oct 14 2006, 10:40 AM JPB The one middle picture looks like they have cracks... Oct 14 2006, 11:18 AM rhodyguy i think *other* head people do the same cut. ... Oct 14 2006, 11:32 AM
orange914
i think *other* head people do the same cut. ... Oct 17 2007, 09:39 PM JPB :lol: Ahhh, I zee. Oct 14 2006, 11:37 AM rhodyguy geoff, do you mean in the top picture with the val... Oct 14 2006, 12:10 PM Bleyseng QUOTE
rtalich :bump:
Len and/or Jake...? Need your opinion pl... Oct 16 2006, 07:37 AM rhodyguy rob's heads were NOT used on a high comp engin... Oct 16 2006, 07:53 AM Bleyseng Heck, for all I know those could be virgin heads t... Oct 16 2006, 08:42 AM HAM Inc Rob the head with the step has been flycut. Stepcu... Oct 16 2006, 12:19 PM anthony |
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