DIY Port/polish '98 heads?
05-17-2007, 11:29 PM
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Staging Lane
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DIY Port/polish '98 heads? Is it even worthwhile to DIY P&P a set of '98 heads? I would like to try my hand at porting a set of heads and I figured that a set of bare '98 heads would be a cheaper way to learn. Are there any realizable gains from DIY P&P? How much on average does it cost to flow a set of heads?
05-17-2007, 11:42 PM
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I laugh at the first set of heads I attempted to "port."
Looking back, I never would have got good results from the information I was pulling from. It took having a mentor who was a very accomplished porter teaching me what to do and how to do it. Without someone showing you what to do, it will be very tough to get a good start. Even once you know what to do, actually getting it accomplished without ruining a head will be the next obstacle.
I guess to better answer your question, if a 10hp gain is what you're looking for, it might be worth it. If you want to have a competive casting when you are done, then NO it would not be worth it. Flowbench numbers aren't the end-all factor that judges if a head will perform. We've had heads pick up ZERO cfm on the bench (of course with port work) and show a 15 hp gain on the engine dyno, and we've had heads show a 15 cfm gain on the bench and pick up zero on th engine dyno.
Good luck.
Ben T.
Looking back, I never would have got good results from the information I was pulling from. It took having a mentor who was a very accomplished porter teaching me what to do and how to do it. Without someone showing you what to do, it will be very tough to get a good start. Even once you know what to do, actually getting it accomplished without ruining a head will be the next obstacle.
I guess to better answer your question, if a 10hp gain is what you're looking for, it might be worth it. If you want to have a competive casting when you are done, then NO it would not be worth it. Flowbench numbers aren't the end-all factor that judges if a head will perform. We've had heads pick up ZERO cfm on the bench (of course with port work) and show a 15 hp gain on the engine dyno, and we've had heads show a 15 cfm gain on the bench and pick up zero on th engine dyno.
Good luck.
Ben T.
