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Author Topic: air gap intake  (Read 16842 times)
wyoming4x4
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« Reply #15 on: August 06, 2011, 02:09:27 am »

photos air gap on a 400 ford cj head. Lloyd creek street port job for my 4wd tow truck/performance.


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wyoming4x4
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« Reply #16 on: August 06, 2011, 02:19:48 am »

forgot intake flow for my tow/performance rig.
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wyoming4x4
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« Reply #17 on: August 06, 2011, 02:22:47 am »

intake


* 100_0101[1].JPG (952.97 KB, 3264x2448 - viewed 494 times.)
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wyoming4x4
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« Reply #18 on: August 06, 2011, 02:25:02 am »

flow


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wyoming4x4
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« Reply #19 on: August 06, 2011, 02:27:08 am »

flow


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wyoming4x4
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« Reply #20 on: August 06, 2011, 02:31:40 am »

hope you can see the work Lloyd done. should be a little monster 400cj. the first cam I'm gonna try is a hyd roller .520 lift for this application. might be a little conservative but will get the job done. If I don't like will have scott at MPG heads cut me a new cam. been using scott for many yrs in englewood colo near denver area. We spoke on a few cams and this is the first one we are gonna try. Playing in high elevation can be tricky sometimes. 5000' and higher is my norm.
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wyoming4x4
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« Reply #21 on: August 06, 2011, 02:37:07 am »

forgot to mention the work done by Lloyd looks excellent. Ask why so much was taken out of port and he said th keep the velocity correct with my application. everything flowed and velocity check and swirl. for my application this is all I need. The air gap intake was hogged out alot on the top to match up to 4v heads. air gap has lots of material to play with just for these application. from the looks glad I got to meet lloyd and let him do his thing mad scientist with the flow bench, head cutter.
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wyoming4x4
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« Reply #22 on: August 10, 2011, 10:01:07 pm »

hello candoo. air gap stuff. the center ports lower the turndowns into head need some work. Air wants to jump into head and you get a dead spot at the turndown into head. Also the steps in ports definetly need to be smoothed. Also if going to 4v heads you take a lot of material on the top of air gap  portsto match up to 4v heads. this actually helps this out and kinda straightens the port. Pushes the air to top of intake port and can see good  things happening. This is all bench racing but common sense tells me its a good thing from my past experience in porting world. Also the flow bench and velocity checks tells this also. Really like this air gap dual plane and has lots of potential for the tuner guys if you want to play. catch you later and drop a message if any other thoughts.
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Hayden123
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« Reply #23 on: August 11, 2011, 05:48:16 am »

It will be interesting to hear how the intake performs, general census on them is too leave them alone and not to open them up to suit the big heads.  They certainly do perform quite well OOTB with just a minor clean-up.
Time will tell.....
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jayh
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« Reply #24 on: August 11, 2011, 08:45:52 am »

is there any work done from the top/plenum side?
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wyoming4x4
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« Reply #25 on: August 12, 2011, 12:07:01 am »

yes some work was done to work the turns into ports. Just bigger radius's and some casting flash. Flow all ports and just try and even out. The lower ports center the turndowns needed work. Air was jumping into heads and needed some work. this is the simple technical explanation for the center ports. With the big port heads you kinda need to work the air flow up to top of cylinder coming from air gap. my computor won't let down load photos for some reason.
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wyoming4x4
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« Reply #26 on: October 09, 2011, 01:30:00 am »

air gap stuff


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wyoming4x4
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« Reply #27 on: October 09, 2011, 01:34:46 am »

the lower ports are where a lot of work was done. the turns on lower plenum below carb and the turns into head lots of work. trying to get everything even on flow. Lloyd was busy getting everything decent.


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wyoming4x4
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« Reply #28 on: November 28, 2011, 12:22:11 am »

 forgot to mention the heads are flowing around 300cfm at .520 lift. but with intake on it flows 272  cfm. little restriction from the intake plenum worked a little. the upper ports flowed east but the lower ports needed the work to get even with other ports. lloyd did some nice work and the flow bench don't lie.
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