Re: hemi super stock heads
[Re: StewartP]
#1141539
11/19/12 09:20 PM
11/19/12 09:20 PM
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Joined: Dec 2005
Posts: 872 NJ
SSDAcuda
super stock
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super stock
Joined: Dec 2005
Posts: 872
NJ
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Joe, I don't see that clarifying anything. I hope theres a new rule to follow as that was a waste of ink…
Valve cover bolt holes must remain unaltered and in their original location.
SS/DA 1924
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Re: hemi super stock heads
[Re: moderncylinder]
#1141542
11/20/12 02:22 AM
11/20/12 02:22 AM
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Joined: Jan 2003
Posts: 6,146 Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,146
Melbourne , Australia
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How much are you allowed to mill the intake face? I have seen examples where the bottom of the valve cover threads showing, this is obviously a means of acheiving a larger cross section port whilst still meeting the CC requirements?
Alan Jones
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Re: hemi super stock heads
[Re: LA360]
#1141543
11/20/12 11:24 AM
11/20/12 11:24 AM
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Joined: Oct 2004
Posts: 1,752 detroit area
moderncylinder
top fuel
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top fuel
Joined: Oct 2004
Posts: 1,752
detroit area
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Quote:
How much are you allowed to mill the intake face?
thats a good question,, tech has been thinking about it for a few months now
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Re: hemi super stock heads
[Re: Erik Jones]
#1141545
11/21/12 09:46 PM
11/21/12 09:46 PM
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Joined: Dec 2005
Posts: 872 NJ
SSDAcuda
super stock
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super stock
Joined: Dec 2005
Posts: 872
NJ
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The problem with that theory is NHRA has let this stuff go for so long, not only are 75% or more of the AH racers current heads illegal, but all their old stuff also… You want to talk about class killer… And No, I'm not currently affected. My SS/DA hemi heads are legal to the rules and my AH stuff will be raced in bracket mode in local ECSSSA circuit races. Makes alot of VERY expensive current hemi heads worthless…except for AH circuit racers like myself
SS/DA 1924
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Re: hemi super stock heads
[Re: SSDAcuda]
#1141546
11/21/12 11:58 PM
11/21/12 11:58 PM
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Joined: Jul 2004
Posts: 487
Dyno1
mopar
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mopar
Joined: Jul 2004
Posts: 487
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Re: hemi super stock heads
[Re: Dyno1]
#1141547
11/22/12 03:55 PM
11/22/12 03:55 PM
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Joined: Oct 2004
Posts: 1,752 detroit area
moderncylinder
top fuel
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top fuel
Joined: Oct 2004
Posts: 1,752
detroit area
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Dan,,, you have old Barton stuff from marvel/bàughman,, going by what Eric says they are illegal,,, everybody at Indy this year was illegal going on what Eric says,,, if you see the valve cover bolt hole exposed in the int face,, it's illegal,, rule says int face may not be cut into any part of screw hole,,, any part,, tech says that means at the v cover sealing surface,, but if you listen to Eric and go as written,, it's any part,, so if that is enforced,, I'd say one person will have the advantage
We need this clarified
Happy thanksgiving to all
Jeff
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Re: hemi super stock heads
[Re: Defbob]
#1141550
11/23/12 11:58 AM
11/23/12 11:58 AM
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Joined: Dec 2005
Posts: 872 NJ
SSDAcuda
super stock
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super stock
Joined: Dec 2005
Posts: 872
NJ
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DefBob, at the begining of the super stock rules: Requirements and specifications for all Super Stock categories are the same as those for Stock Cars - Section 10A - with the following exceptions: Unless it is written othrwise, the stock rule applies. And my point in all of this is that if NHRA does something about all the fighting within the class according to the way the rule book is currently written, There will be alot of very expensive junk hemi heads. There needs to be an ammicable solution and the majority of hemi heads deemed legal. If the valve cover gasket fits and minimal thread cutting involved, there needs to be a cc penalty or spacer made. As Erik has stated, a few cc's will not kill the performance of these cars that much. And if you think it will, do a new set of heads sans penalty cc's...
SS/DA 1924
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Re: hemi super stock heads
[Re: Erik Jones]
#1141551
11/23/12 12:14 PM
11/23/12 12:14 PM
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Joined: Oct 2004
Posts: 1,752 detroit area
moderncylinder
top fuel
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top fuel
Joined: Oct 2004
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detroit area
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if you think there are 2 cc's difference in the intrepretation of the rule,, you,,,,, are sadly mistaken
when the rule book says one thing,, then you talk to tech and they say this is how we meant it,, then you talk to different divisions and they say this,,, when others say that,, you now have 3 versions of the same rule depending on who you ask in nhra,,, or racers
we just need this clarified,, which should happen in the next few weeks
jeff
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Re: hemi super stock heads
[Re: ss/ah3480]
#1141554
11/24/12 03:09 PM
11/24/12 03:09 PM
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Joined: Apr 2005
Posts: 1,505 TN
SCATPACK 1
pro stock
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pro stock
Joined: Apr 2005
Posts: 1,505
TN
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So going by the rule, as it is written, IF I machine the intake surface around the valve cover bolt and the valve cover bolt threads are untouched, but the intake surface itself has been completely machined away and a new intake surface rigged up to work behind the valve cover bolts, with the intake machined to match this new head intake surface, is this legal? Not in the spirit of the rule, I know, but I do not see where it states the intake has to be completely flat along the surface. Or did I miss this? By the letter of the rule, this would seem to be legal unless it states the head surface has to be completely flat the entire length of the head-intake surface. Not trying to point fingers at anyone, but it looks like that is what was done on the picture of the Camo head (I am probably wrong). A friend that builds SB Chevys does this and has never been busted. Seems like it would make some GM & Ford heads illegal too.
Old Geezer Racing
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Re: hemi super stock heads
[Re: StewartP]
#1141556
11/24/12 06:45 PM
11/24/12 06:45 PM
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Joined: Apr 2005
Posts: 1,505 TN
SCATPACK 1
pro stock
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pro stock
Joined: Apr 2005
Posts: 1,505
TN
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The picture is on page 8 near the end. The one posted earlier by Charlie. See the green part of the gasket on the intake with the small square opening. It appears to b just there to clear the VC bolt that was left intact. Pet rules, I agree it would b legal.
Old Geezer Racing
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