Porting

[lkurek at smtpgate.anl.gov]

     This is getting a bit off topic....but....
     
     More surface area=more potential heat spots=more detonation potential 
     This is especially tru with iron heads, not as much with aluminum 
     ones. FWIW, I wouldn't take too much off the stock chambers in ANY 
     production GM head. They are pretty damn thin to begin with, and any 
     serious opening procedure will weaken them further....not good.
     
     TTYL!
     
     Larry Kurek


______________________________ Reply Separator _________________________________
Subject: Re: Porting
Author:  <diy_efi at efi332.eng.ohio-state.edu> at Internet
Date:    3/12/98 11:39 AM


How will a larger chamber increase ping knock and detonation?  I'm curious...
     
On Mar 12,  8:08am, Robert Harris wrote: 
> Subject: RE:   Porting
> Opening up your chamber to lower compression will raise your ping, knock, 
> detonation levels to self destruct and in general cost you power and
> economy - but what the heck do I know anyway. 
>
> Best Book on Porting Chevy Heads.
>
> "How to Build & Modify Chevrolet Small-Block V-8 Cylinder Heads" 
> David Vizard
> ISBN 0-87938-547-2 Motorbooks International 
> ------------------------------
>
> From: Andris Skulte <askulte at emerald.tufts.edu> 
> Date: Thu, 12 Mar 1998 01:35:01 -0500
> Subject: books on porting
>
> I know this is off topic for DIY_EFI, but there are many knowledgeable 
> people here...
>
> Are there any good books on porting heads? I read the SA tutorial on the 
> web, but would like more details. I'm picking up a set of complete vette 
> heads for my 305, and am planning on opening the compustion chamber up
> (to lower compression for the turbos) and the usual short side radius
> work etc. Please email me privately if you know books, or have done this 
> before and can give me tips. TIA!
>
> Andris
>
> PS-for the necessary content, I should have the DFI any day now :) 
>
> ------------------------------
>
>-- End of excerpt from Robert Harris