99 head build
#1
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99 head build
So... I'm getting '99 head from Ben.
I need suggestions on what to do with it. What cams should I run, what valvetrain to get for it. I want to rev to 7600rpm or so and I want car to be streetable.
I need suggestions on what to do with it. What cams should I run, what valvetrain to get for it. I want to rev to 7600rpm or so and I want car to be streetable.
#6
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7600 reliably.
ps: monitor is in my trunk outside. i cant leave work right now but if i can get out of here before ups store closes - its out today
oh, and i found original box from that monitor too!
ps: monitor is in my trunk outside. i cant leave work right now but if i can get out of here before ups store closes - its out today
oh, and i found original box from that monitor too!
#8
I bought a set of 94/95 valvesprings and SI +1mm valves for the 00 head on my engine. The earlier valvesprings are a little stiffer than the 99/00, since the solid lifters are lighter than the earlier hydraulic lifters, the rpm range is greater. I don't remember the exact weight diff between OEM valves and the SI valves, but I remember it being so insignificant the shop didn't care. If I did it again, I'd go for the FM spring kit. The spring rates AFAIK are a little lower in the FM kit than elsewhere, yet more than the 94/95 springs, and the Ti retainers are nice. Too much spring rate is going to create more parasitic drag, beat on the timing belt, beat on the cams, etc etc. I set my rev limiter to 7600 but don't really go there much, only on track if I need the rpms for certain corners.
#11
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last time on track i had to rev it all the way on 2nd gear because i didnt have time to shift to 3rd. i have my rev limiter at 7000rpm right now. those 600rpm will REALLY help
#18
I had my 99 head ported by the shop that did the engine, installed +1mm SI valves, 94/95 valvesprings, WebCams camshafts, Fidanza cam gears. If I could do it again I'd get the FM spring/retainer kit and have the valves/chambers/exhaust ports coated. I did a little research a few months ago and I recall the FM spring specs are a little lighter than the Supertech springs. I felt that with the mild lift of the Webcams I would rather run the FM springs as stiffer springs at that point would have been overkill. I don't think there was much of a price difference, but I don't remember. The 99/00 lifters are already lighter than the earlier hydraulics. Adjusting valve clearances might be a PITA with shim under bucket, but I never looked into the benefits/liabilities of that setup. I think you can run more aggressive cams with shim under bucket, but I wasn't going to go crazy on cam specs anyway. WebCams spec'd a set of cams for me when I gave their tech guy all the information on my engine, car, combo etc etc. Specs are very close to their off the shelf grind listed on their website. For the cost of cams, I'll increase boost before changing cams again.