LLT Custom finished ported IM

Bolt-Ons, Intakes, Exhaust, Ignition, Pulleys

Moderator: mrray13

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Running 12s
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Joined: Mon Feb 07, 2011 9:29 pm
PostPosted: Sat May 04, 2013 8:24 am
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Full Blown Post Whoring Vet
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Joined: Wed Jan 12, 2011 12:18 pm
Location: Clarkston, Michigan
PostPosted: Sat May 04, 2013 6:12 pm
Nice looking manifold
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for my build check here...http://bowtiev6.com/forum/viewtopic.php?f=28&t=57 ..........................................................TEAM LLT

Gearhead
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Joined: Wed Jan 12, 2011 3:46 pm
Location: Corpus Christi Tx.
PostPosted: Mon Dec 09, 2013 4:59 pm
what are the specifics of this modification? what are the performance numbers that this modification puts up?
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Running 12s
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PostPosted: Tue Dec 10, 2013 1:00 pm
Avg power gains are in the 8-14 rwhp. It is a OEM intake manifold that has had the oil sump filled (the large depression just inside the snout that causes so much flow disturbance and then is ported to match the intake manifold gasket. Also helps off idle throttle response. Best mods for the $ to start are the Iceolator for $150 (we have them in stock) and the CNC ported throttle body for $150 plus refundable core charge....but before anything, a good catchcan to stop the oil ingestion.

Let us know more about what you have now and what your goals are. No need to spend$ you don't need to.

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PostPosted: Tue Dec 10, 2013 7:47 pm
Interesting ! When I was doing my upper induction cleaning we were looking at this and wondering about that sump. Side note, a good catch can does help keep things clean. My valves were very clean.
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Running 12s
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PostPosted: Fri Dec 13, 2013 12:24 pm
That sump as you can see is for catching and collecting the large amounts of oil from ingestion ( a problem that does not exist of course!) and that is why the snout slopes at such a downward angle so when the car is not running some of the oil coating the intake can run downhill and accumulate there. The problem is any variance from a nice, uniform runner shape will cause turbulence in the form of vortices that disrupt the air-flow and have a negative effect on power due to the decrease in velocity this disruption causes. Filling it (and you MUST soak it in a good solvent like brake clean or even gasoline to remove any trace of oil that may cause a weak bond between the industrial epoxy that should be used for this) with a proper formulation of automotive engine epoxy that takes 3 days as you first fill the main portion, then prop the IM so each remaining side indentation can be filled, then you can port as any porting of a runner to get a uniform shape that does not have a negative effect on the flow as it transitions from the throttle body opening. The rest of the porting does not contribute as much to power gains as correcting this design, but there is some short-side radius cleanup that helps at the exit section of the runners as well.

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