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Old 12-17-2012, 12:30 PM
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Static compression ratio 11.50:1 using those pistons. What will you use for fuel?

IK200 heads can be had with either OEM size 1.250" valve springs or aftermarket 1.437" springs. Do you know the size of the spring pockets? Your head improvement kit includes 1.437" springs. If the heads are cut for 1.250", you will have some machine work to do.

Do you understand that the valve seats are not finished on these heads? You will have some machine work to do.

Do you understand that you cannot run the valve springs directly on the aluminum head. I don't see where you have taken spring cups into consideration.

Do you understand that the rocker studs you are buying are 7/16". I'm bettin' the heads are tapped for 3/8-16 and you will have more machine work to do.

Do you understand that you cannot run a shim gasket with aluminum heads and iron block?

Do you understand that you can buy all this stuff ready to bolt on without machine work. You will pay the price for this motor, whether it's to the manufacturer who will finish the product so that it will go together without further work or you will pay less for semi-finished stuff and pay a local machinist to finish it for you. There is no free lunch. You will pay somebody.

Last edited by techinspector1; 12-17-2012 at 12:37 PM.
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