stock valves OK?
stock valves OK?
I'm bulding up a KA and obviously going to rum it turbo. I have the block and the head ready to get the work done. Now, my current KA is boosting 10 psi and yielding 245 lbs of torque and I'm extremely happy, which means that the most power i want to produce is around 550- 6?0 horses. I'm getting all new internals for the block (.20 over pistons, forged rods, etc...) and new cams and springs. I'm also getting the head ported, valve jobs, etc... My friend and I were discussing the possibility of not oversizing the valves, thinking that we can get the horsepower desired without having to do so. The problem is finding performance valves that are stock size. So how many horsepower can the stock head valves hold? Where can I get performance(titanium) valves that are the stock size? And will I still be able to reach my goal of horsepower (I'll also be using a great turbo to be determined) even by cutting this corner?
Re: stock valves OK? (fabio420)
Ferrea makes performance "super alloy" intake/exhaust valves in stock size.fabio420 wrote:I'm bulding up a KA and obviously going to rum it turbo. I have the block and the head ready to get the work done. Now, my current KA is boosting 10 psi and yielding 245 lbs of torque and I'm extremely happy, which means that the most power i want to produce is around 550- 6?0 horses. I'm getting all new internals for the block (.20 over pistons, forged rods, etc...) and new cams and springs. I'm also getting the head ported, valve jobs, etc... My friend and I were discussing the possibility of not oversizing the valves, thinking that we can get the horsepower desired without having to do so. The problem is finding performance valves that are stock size. So how many horsepower can the stock head valves hold? Where can I get performance(titanium) valves that are the stock size? And will I still be able to reach my goal of horsepower (I'll also be using a great turbo to be determined) even by cutting this corner?
Check out:
http://www.importperformanceparts.net/
Re: stock valves OK? (fabio420)
On my 24 e I just had installed SI valves out of Calif. Stainless steel plus have a slight oversize in diameter, and swirled polished. Also, had bronze guides installed. This is going on a NA engine for dirt racing. I have heard good things regarding this company and its products. Very helpful over the phone etc. You can do business over the web with them also.