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SRP1
Samba Member
Joined: January 06, 2007
Posts: 4342
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 Posted: Sun Dec 14, 2008 9:21 am Post subject: |
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Head cracking has more to do the with how well you can build the combo and tune the engine than anything else. A poor running out of tune engine that generates high combustion temperatures will cause the heads to crack, the engine can only run as good as it's tune, and combo..........
The heads will at some point crack between the seats, it's a common issue and not a problem that typically causes any type of failure, cracking to the spark plug however reverts back to high combustion temps. To help with this issue however many head builders will weld up the spark plug hole and relocate it further away from the intake seat, some will re-tap the plug hole to use a much smaller 12mm or in some cases a 10mm spark plug. This leaves a substantial amount of meaty material between the intake seat and plug.
As far as the head is concerned it does not care if the compression ratio is 6.0:1 or 14.0:1 |
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biancovw
Samba Member
Joined: January 08, 2008
Posts: 59
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| Posted: Sun Dec 14, 2008 10:31 am Post subject: |
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wonder how they flow at 561"lift
people let's here your tims stage2 headed combos  |
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grimace007
Samba Member
Joined: August 30, 2006
Posts: 2673
Location: swampville, florida
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| Posted: Sun Dec 14, 2008 11:47 am Post subject: |
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http://www.thesamba.com/vw/forum/viewtopic.php?t=331035&highlight=lets+hear
4 or 5 posts down is glenns motor with tims stage 2 heads and a engle k8 cam w/ IDAs and dual quiet packs im pretty sure.
_________________
Brian
68 sedan
Dallas Air Coolers
| perrib wrote: |
Hey It is The Samba where well thought out rational answers can take a while and getting side tracked is normal. I was just lucky this time.  |
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No one has any personal responsibility these days. This country is sue happy. Intelligence is no longer a requirement, just an accessory. |
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biancovw
Samba Member
Joined: January 08, 2008
Posts: 59
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| Posted: Mon Dec 15, 2008 10:52 am Post subject: |
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the car has a bitchin sound
So how much HP is realistic at the flywheel with this heads If I use FK8 and 48 idf's on my 2276? |
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gerg
a.k.a. 6volt65
Joined: April 25, 2003
Posts: 5454
Location: Monroe, LA
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| Posted: Mon Dec 15, 2008 11:50 am Post subject: |
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My goal is 130 at the flywheel with a webcam 218, 125 rockers, stage 2 heads, balanced, 44 IDFs, Mallory SVDA - 2276 engine.
_________________
Gerg
. . . I got 99 problems and my bus ain't one . . .
'65 Sunroof Beetle
'65 Vert
'60 Singlecab |
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biancovw
Samba Member
Joined: January 08, 2008
Posts: 59
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| Posted: Mon Dec 15, 2008 12:44 pm Post subject: |
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| i hope to get 170 at the flywheel |
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gerg
a.k.a. 6volt65
Joined: April 25, 2003
Posts: 5454
Location: Monroe, LA
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| Posted: Mon Dec 15, 2008 12:48 pm Post subject: |
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Well, I am going mild since it is going in a bus and tons of sustained freeway driving.
8.3:1 CR . . . 63cc heads with a .060 copper gasket.
_________________
Gerg
. . . I got 99 problems and my bus ain't one . . .
'65 Sunroof Beetle
'65 Vert
'60 Singlecab |
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biancovw
Samba Member
Joined: January 08, 2008
Posts: 59
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| Posted: Wed Dec 17, 2008 2:47 pm Post subject: |
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| how many cc's come in heads as they are |
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