View Full Version : What headwork to get done on a SOHC KA?
shinrekka
01-02-2006, 09:54 AM
I make deliveries to a realy good machine shop about once a week for the last 2 years, I talked to the owner and hes going to give me a good deal on what ever I want done. I've decided im going to get my head built as I need to get the cam towers milled any way for an aftermarket cam but im not sure what else to do. Anyone have any suggestions? Im thinking about getting the head shaved to raise compression, cam towers milled to alow for whatever cam I buy, and get it port and polished. Is there anything else they can do? Im trying to hit 200hp to the wheels and I dont realy care if the car dosent idle. What about oversized valves? Please any suggestions are welcome
ledzeppelin240
01-02-2006, 11:04 PM
Resurface to a max of .008” including block and cylinder head, but it will retard your cam timing slightly.
Some chrome-moly valve seats with some stainless steel or black nitride undercut valves. Magnesium-Bronze valve guides, and of course upgraded valve springs, keepers, and spring retainers. Full port and polish, solid lifters with rocker arms and fully balanced, with a custom camshaft is what I am doing.
Those are just some ideas that will improve the cylinder head dramatically.
that180guy
01-02-2006, 11:07 PM
ima go on a limb and say, your not gonna touch 200 with just a cam and headwork.
ledzeppelin240
01-03-2006, 04:58 PM
My guess would be that you could probably get 30-40hp out of the cylinder head. But remember everything has to work together so to complete it you will have to upgrade the ignition, fuel, intake and exhaust...
shinrekka
01-04-2006, 08:06 AM
Yeh, I already have full exhaust (OBX header, Apexi n1 catback, 3" test pipe), K+N filter on an injen pipe, fidanza flywheel, lighter crank pully, and I already have MSD ignition. I am doing research on the feul system right now, if I am going to max out the feul system which it seems like im going too; I'll just get the drop in nismo r4 cam, and then do a small turbo kit. I'd realy like to stay n/a becuase feul upgrades = money but if i have to do feul upgrades anyway I might as well go turbo. But im still deciding whether or not to turbo, the car realy if faster then I need it to be especially for long island were the streets are way to crowded and the cops way to corrupt. ehh we'll see. Thanks everyone
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