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Turbo Head Builder Options

Old 11-30-2018, 01:09 PM
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Originally Posted by riceball777 View Post
valve failure is pretty rare and when it does happen its always on the exhaust side. I personally run super tech .5mm oversized super tech inconel exhast valves, bronze valve guides, super tech titanium retainers and duel springs all with stock oem intake valves. Valve job and work done by tom at port flow.
How does the turbod engine idle with the .5mm oversized exhaust valve? Is there any minut difference? I might go 1 or .5mm oversize exhaust side too.
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Old 11-30-2018, 01:19 PM
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It seems all shops that port and polish the head can obviously get both exhaust and intake side to flow more cfm but they also claim to be able to get exhaust side cfm to flow even more than the intake side. Even though from the factory intake valves are already bigger than exhaust valves it comes i wonder how this size difference should change as the exhaust port is made to flow even more than intake port?

Last edited by F1TwoThousand; 11-30-2018 at 11:18 PM.
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Old 12-01-2018, 04:14 AM
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Ive got a brand new 4piston head w/ +1mm ferera valvetrain for sale. Decided not to use it. Was $3700. Yours for 2500.



Last edited by Charper732; 12-01-2018 at 04:23 AM.
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Old 12-01-2018, 10:20 AM
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Originally Posted by F1TwoThousand View Post
Looks like im going to be the guinea pig, I went with 4Piston Racing. Port and Polish head, Manganese Bronze valve guides, Ferrea S101000 spring kit, Ferrea Retainers, Ferrea competition plus oem size super alloy valves, and cnc open the combustiom chamber. Will post up the flowchart when i get it back.
what’s estimated cost on something like that? How about turnaround time?
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Old 12-01-2018, 11:11 AM
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They have all the options but top of the line street build i am getting is around $2500 with shipping included. ( i was able to get the $400 black friday discount though)
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Old 12-01-2018, 11:36 AM
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Avoid the wait and have an extra cylinder head for about the same cost.

I'm selling my brand new 4piston head here: https://www.s2ki.com/forums/member-s.../#post24539172
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Old 12-01-2018, 02:06 PM
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Damn, i wouldve jumped on that but i already shipped out my head a few days ago.
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