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59 DEGREE 340 SIAMESE BLOCK
#908517
01/19/11 07:30 AM
01/19/11 07:30 AM
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Joined: Nov 2006
Posts: 370
Queensland Australia
moparmacka
OP
enthusiast
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OP
enthusiast
Joined: Nov 2006
Posts: 370
Queensland Australia
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Does any one have close up OR clear photos of the machining required on the inside of the valley (extra head bolt bosses in the valley), when fitting Comp 8043 roller lifters. I saw a few in a MM mag on a build that AndyF did but the pics are a bit small and low res. My concern is how much can I mill off, considering the water jacket is directly under this area that requires machining. Also is it worth machining the extra material off the lifter bosses on these blocks....does it weaken this area any?  Thanks in advance Macka
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Re: 59 DEGREE 340 SIAMESE BLOCK
[Re: moparmacka]
#908518
01/19/11 08:32 AM
01/19/11 08:32 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I would check Shady Dell Speed Shop web site or contact Ryan(from the same shop) and ask him... if its been done to a SB mopar he would know 
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Re: 59 DEGREE 340 SIAMESE BLOCK
[Re: 572B1]
#908527
01/20/11 08:08 AM
01/20/11 08:08 AM
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Joined: Nov 2006
Posts: 370
Queensland Australia
moparmacka
OP
enthusiast
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OP
enthusiast
Joined: Nov 2006
Posts: 370
Queensland Australia
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Quote:
Hey Macka, I hope you have heaps of beer. Geoff will have a thurst after this job.  
Didn't you hear?......between Geoff and the floods there is shortage of XXXX!!
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Re: 59 DEGREE 340 SIAMESE BLOCK
[Re: moparmacka]
#908528
01/20/11 08:43 AM
01/20/11 08:43 AM
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Joined: May 2004
Posts: 855
Brisbane Australia
572B1
super stock
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super stock
Joined: May 2004
Posts: 855
Brisbane Australia
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Quote:
Quote:
Hey Macka, I hope you have heaps of beer. Geoff will have a thurst after this job.
Didn't you hear?......between Geoff and the floods there is shortage of XXXX!! [/quote
He works for bundy and coke also. 
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Re: 59 DEGREE 340 SIAMESE BLOCK
[Re: moparmacka]
#908529
01/20/11 01:38 PM
01/20/11 01:38 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
moparts member
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moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
WOW! That is some seriuos machine work in the valley, bet it sheds some weight! I see from photo 1 that you can machine quite a bit from the inside, where the extra headbolt boss was. Is there still plenty of meat before hiting water?
Thanks for the pics!
Yes there is plenty of material right where the head bolt bulge is, the thin area is on both sides of the head bolt bulge where the rivets will ride in a normal roller lifter.
I've done about 30 59* R3's for roller lifters & only one hit water. Just bad bad core shift on that block, normally there is around .150" left after clearancing.
MrP yes this is my own CNC program. We've been clearancing them on CNC for about 4 years.
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