![]() If your lead is positioned just right, it can make contact with the manifold and ground out. Remove your battery terminal prior to installation, then check the clearance between your starter lead to the manifold runner.We've sold more of these than anyone, that being the case - we've gotten the most feedback when things go wrong. If you have the tools available, I'd suggest everyone do this. I hit the left runner with a ball hone for about 60 seconds and things cleaned up nicely. ![]() The runner seen here on the right is typical of what you'd see in cast aluminum and for turbo applications, completely acceptable. You can see here the casting is harsh, but the important areas have been touched with a CNC machine. Yes, this could be better but overall, it doesn't need to be. Keeping in mind the price point, we take a look at build quality. Naturally aspirated guys are seeing results that out perform the ever sought after European square top manifolds! The guys over at FM picked up in the area of 30 whp on a high output turbo setup. Right out of the box these things have proven to achieve BIG GAINS. There is a relatively vague formula out there to calculate the rough factor the plenum size, but the idea goes a bit like this - More volume = bigger top end power. With short runners your plenum should be 2 to 3 times the engine displacement for all out power, for response and parking lot racing (get offended), 3/4 to 1.5 times the displacement is ideal. So what gives? Is this a product of an easy manufacturing trick? Nope, these feature an expandable plenum! There is a relatively vague formula out there to calculate the rough factor the plenum size has but the idea is this - More volume = bigger top end power. These didn't last on the first round but I've got some stock to play with now (temporary coinsurance, as word spread quickly that we have them in stock).įirst thing I noticed, it's two pieces? Most intake manifolds (Victor X seems to be the most comparable thing that comes to mind) are one piece. Now that we have inventory, I've decided it's time to put one of these on the bench and take a more in-depth look at one of these power adding chunks of aluminum.
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