Quote:
Originally Posted by Big Bronze Rim
I just finished installing one. Overall its ok but like mentioned, it does need work to be useable. The casting is rough inside and a tad bit rough outside. I cleaned mine up with a die grinder inside the ports as well as sanding down and rough areas and casting flash on the outside. Also my throttle body did not line up with the port when bolted on so again, more grinding was required. I should also point out that when I recieved it, there were metal filings in the intake from the holes being tapped. These manifolds really MUST be cleaned up before use - at best it'll look like crap, at worst you will kill your engine.
You will need to fab up a throttle bracket as well. I am using a SOHC throttle cable which, while a bit short (it runs across the valve cover), works fine.
Other than that, for $100 and about an hour of time I seem to have way less torque falloff up top and it makes changing the oil a whole lot easier.
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I had the exact same experience with mine. Just a lot of sanding/grinding and test fitting things. Fuel rail bolted up fine.
Took me more than a hour to do all the grinding/sanding, but I was pretty anal about it and reshaped the TB port - which I think was shaped off the GReddy casting, but it sucked from a flow standpoint(lots of separation right past the TB). I also did an 80 grit finish all the way up the ports and at least a 1" radius into the plenum, and retapped all the holes(they were a little janky, and lots of chips in there).
I also had to grind a few of the manifold to head bolt holes to get them to line up, looks like they drifted on about half of mine. Not an issue, except it just took some time.
Overall, I'd still buy it over spending the $$$ for the real GReddy, which just seems very expensive given the size of the casting and the flow path just past the TB(if it's the same on the GReddy vs. FReddy).