block modifications for increase displacement
- Thread starter malibu795
- Start date
This is great info. Though i know the center 4 bores have much thinner wall material, it would be nice to see exactly how much!:cool2:
Any data on this?
Any data on this?
I'm a whore for bore, mainly because I'm an even bigger whore for RPM, but in a forced induction application, doesn't the presence of boost take a lot of the valve shroud and cylinder head flow concerns out of the equations? I've also noticed that some of the OEMs (Audi in particular) will underbore their performance turbo motors. The last turbo S4 comes to mind. It was a 2.7L twin turbo. Basically a stock 2.8L block that had been left under-bored. Just food for though.
holy old thread recarnate...:rofl:
iirc all the walls were the same thickness.
increase bore will unshroud the vlv and in crease flow to and extent then you need bigger vlvs
Dmax block is not siameze bore...
iirc all the walls were the same thickness.
increase bore will unshroud the vlv and in crease flow to and extent then you need bigger vlvs
Dmax block is not siameze bore...
I never cut the block up to see, but Are the bores plated? or do we just have a machined cast iron bore?
looking to increase bore size will help alot with valve shrouding, you should see gains of at least 5-10 cfm and up on intake and exhaust. on top of a ported head. and even more with 35mm or bigger valves.
looking to increase bore size will help alot with valve shrouding, you should see gains of at least 5-10 cfm and up on intake and exhaust. on top of a ported head. and even more with 35mm or bigger valves.
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Send a block off to Darton Sleeve, thoes guys can add some :wup: to Anything!
Theres your awnser to perfect/large bores! Im sure they'll do a diesel.
Theres your awnser to perfect/large bores! Im sure they'll do a diesel.
Come on Guy, get in touch with AFR and get us some CNC 4V two injector/hole heads popped out
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< 4.155 bore has been done, among many other avalible sizes.
Billet block is in final machining and it cost 9k and about 5 months of your life.:rofl:
Thats all for now...
Billet block is in final machining and it cost 9k and about 5 months of your life.:rofl:
Thats all for now...
between 7.0 and 7.1 liters
Uh, Bigger.....
Come on Guy, get in touch with AFR and get us some CNC 4V two injector/hole heads popped out
Shhhhhhhhhhh!
Don't need AFR, I have all the capability I need, in house.
Wasn't that thing supposed to be running by now?
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Shhhhhhhhhhh!
Don't need AFR, I have all the capability I need, in house.
Im ready when you are
.
Uh, Bigger.....
Shhhhhhhhhhh!
Don't need AFR, I have all the capability I need, in house.
Wasn't that thing supposed to be running by now?
Sounds sweet Guy !
Im ready when you are
:coolspot:
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Uh, Bigger.....
Shhhhhhhhhhh!
Don't need AFR, I have all the capability I need, in house.
Wasn't that thing supposed to be running by now?
Perfection takes time and patience!:angel: