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Intake Manifold
It looks like the aftermarket intake manifolds don't really do much, is it better to just port your intake manifold?
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Guess making 1000whp on a after market intake manifold doesn't do much either.
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My take on it. If your N/A. Port and polish. FI with big boost. Aftermarket.
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What size would you get the lower and upper ported too, how does it compare to aftermarket
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How much money you want to spend?
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Porting the upper and lower will net you a few Hp. If you want to benefit from all the porting bump up the compression
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For now I'm staying NA, but I'm trying to squeeze every HP I can out of her. I went with the M370 upper intake manifold and I like the results. I'm planning on porting the lower soon. Sent from my SM-G930V using Tapatalk |
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Port match, and polish is worth it in any motor. N/A or FI. Most of the new motors need VERY little done to them.
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If all you are doing is massaging the intake manifold, you're not going to gain much - not worth the time/effort/expense, IMNSHO.
As part of changing all intake/exhaust plumbing, all that is really needed is some port matching and polishing. Even then, it's not going do do much for a NA engine. Any changes in plenum/runner volume or shape should be left to the experts. 40 years ago, you could get a noticeable boost with a good port/polish job. Not so much nowadays as the engineers have already done most of that in order to meet emissions and MPG regulations. PS: Don't know if it still applies but when we were doing a port/polish job on 60-70s engines, we'd go ahead and match the exhaust ports and trim the valve guide bosses, too. Trimming didn't do a lot of good, just an as-long-as-we-have-the-engine-apart thing. |
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