Originally Posted by synolimit Doesn't gtm already have one made? They're working on it.
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03-01-2014, 09:01 PM | #16 (permalink) |
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03-01-2014, 11:24 PM | #20 (permalink) |
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I think this will deff give extra power! I know the gtr guys ported and polished there stock manis and got great gains, yes I know two completely different cars but still think there is potential.
Also if I remember correctly Megan bored out his TBs and had a custom intake and saw gains. |
03-02-2014, 12:36 AM | #21 (permalink) | |
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03-02-2014, 12:42 AM | #22 (permalink) | |
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As seen the manifold to intake runner line up is slightly off....others and myself have sanded down the manifold to meet the intake runner better....same goes for the TB to manifold, the plastic mold kinda protrudes a bit and can be sanded down also making a smooth inlet...
I have polished my intake runner...want to in for more http://my350z.com/forum/intake-exhau...-clean-up.html
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03-02-2014, 07:16 AM | #24 (permalink) | |
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IMO, bore as big as you can without sacrificing the structural integrity.
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03-02-2014, 08:52 AM | #25 (permalink) | |
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I didn't test a ported VHR intake manifold on the VVEL engine neither on the HR engine.
my last testing was in 2012 on the HR intake manifold (barely ported) on the VVEL engine and there was a lot of gain below 7000rpm and pretty much the same 7000 to 7500 then I did a separate test on the 2 different size of TB and there was also a good gain there ,, but wont do **** if you still have the OEM air box since you need a bigger MAF tube. Most of that stuff is in the first few pages of my Journal Right now the HR Intake manifold has been port matched with the lower intake manifold for over a year now. but I haven't done any true testing on the dyno but did seen in avg more air going in (Maf Voltage avg.) during street tuning Quote:
Last edited by Megan370z; 03-02-2014 at 08:59 AM. |
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03-02-2014, 11:22 AM | #26 (permalink) |
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I am thinking about doing this with my M370 but have no experience with it, although it doesn't look too difficult to do. What tools do you guys recommend using, dremel attachments, etc?
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03-02-2014, 01:36 PM | #27 (permalink) | |
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The HR upper manifold (or M370) is a mess inside. The molded halves weren't meeting up correctly inside the runners. Turbulence was almost certainly reduced after I smoothed everything out, but I have no dynos to prove anything. One thing to look out for when installing just the upper manifold: There is room for the upper manifold to move around in relation to the lower manifold due sloppy tolerances in the bolts and holes that line up the two manifolds. This could cause a less than optimal flow. So if you're anal about it like I am, your best bet is to remove the upper and lower manifolds and match them. Then make a note of how they need to be attached to avoid a kink in the flow. There is probably an ~2 mm movement possible between the upper an lower manifolds on my Z. It might not matter, but I feel better knowing that everything now functions like one continuous runner with no kinks or sharp angles.
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03-02-2014, 05:11 PM | #29 (permalink) | |
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03-03-2014, 03:52 AM | #30 (permalink) | |
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Props again man! I too have been slacking and haven't tuned since added a few breather parts!
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