INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

Double Checking: Head milling

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Old Oct 29, 2006 | 04:25 PM
  #21  
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Originally Posted by silverbrick
the angles wont change but if you mill the heads, the bolt holes on the head will sit lower than the bolts holes on the intake. thats where the problem comes in
how do you figure there is space under the intake for it too drop down well over .055
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Old Oct 29, 2006 | 05:02 PM
  #22  
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Kyle when I bought it I didn't get a cam card it's an MTI C2 you sent me these specs: 224*/224* .581''/.581'' 112*+4

It's a single pattern camshaft with XE-R lobes.

The +4 puts it at a 108ICL for VEs of the following measured from .050''.

IVO: 4
IVC: 40
EVO: 48
EVC: -4
0* of overlap

And I installed it straight up

TDRUMM I have 2" intake and 1.55" exhaust valves
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Old Oct 29, 2006 | 10:09 PM
  #23  
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Josh.

Thanks for the clearance calc.s and the cam info.

Beau.

You might want to keep those #'s handy incase you step up with your cam. Given a certain amount of distance, the VEs will need to be lined up for a safe clearance.
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Old Oct 29, 2006 | 10:34 PM
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Yussuh boss.
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Old Oct 30, 2006 | 09:25 AM
  #25  
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mill your heads would you get more power this way and up to how much or would you be better off getting new heads?
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Old Oct 30, 2006 | 04:04 PM
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Builds compression ratio. More compression usually equals more powa!


UPDATE: After speaking with the machinist, i only milled .045 off of them to give a little more margine for error on P to V clearance and issues.
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Old Oct 30, 2006 | 04:15 PM
  #27  
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8.4 dynamic
10.4 static
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Old Oct 30, 2006 | 04:18 PM
  #28  
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Thats about where i want it to sit.
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Old Oct 30, 2006 | 04:32 PM
  #29  
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Originally Posted by FarmerBeau
Thats about where i want it to sit.
Yup... I'm going to do another 20 off of mine and put the stock gaskets back on. I'll be looking at roughly 8.6/10.5 w/ my 214/212-108 cam.

VEs @ .006'' for me are

IVO:24.5
IVC:60.5
EVO:59.5
EVC:23.5

For Josh:

IVO:28.5
IVC:64.5
EVO:72.5
EVC:20.5

Got to watch out for that last number, the EVC. Yours is 23*. Our exhaust VEs are really delayed with the way our ICL/LSA is setup.
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Old Oct 30, 2006 | 04:43 PM
  #30  
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So a lower LSA/ICL puts our Exhaust valve at a closer position to the piston when it is coming up on the exhaust stroke?
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