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 Reversion 
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
How bad can reversion effect your carb tune? Just removed my intake and WOW! Now I'm not sure how out of wack the carb will be for the new intake. I knew the plenum looked a lil brownish, but omg. I even tried a anti-reverions/sheer plate, but I put it on after the car sat all winter. So I couldn't tell if it made a diff and when I took it of it seemd to losse some off the bottom and top but also changed the carb so wasn't 100% it was the plate. Now I'm pretty sure it was helping some.

Anyways long story short I use to have a performer so I could run an air cleaner switched to a action plus I ported myself and noticed I lost a lil on the bottom, it was ok (street tire car). After reading this article( http://www.popularhotrodding.com/engine ... to_05.html ) I decided to try a air gap since I had given up on my air cleaner for another reason and planned on getting a cowl hood(can't now) and will be using drag radials.

Here are some pics of my intake, I left the port ruff to help with fuel mixtuer as the car always ran some rich(Another carb prob, fixed now). You cna see how bad my porting was, shoulda finished it with 60grit and smoothed it out. The head runners are all entirely flat black and you can see from the last pic I used the less seperated style intake.

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Tue May 21, 2013 7:45 pm
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Joined: Thu Mar 28, 2013 6:09 am
Posts: 729
Using Unleaded gas???


Tue May 21, 2013 8:57 pm
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
Regular pump gas, low compression.

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Tue May 21, 2013 9:03 pm
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
Also the previous performer intake didn't have any signs of reversion, no other changes.

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Tue May 21, 2013 9:43 pm
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
I haven't drove it because of the weather, but I pulled a plug and just warming it up twice has almost fouled them. I already have the IFR down to .026 for the action intake to idle/cruise clean and t-slots are less than square. With the bad reversion I almost thought I might have to increase fuel because of that. All settings are the same other than idle air screws turned in some more to try and clean it up.

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Thu May 23, 2013 8:46 pm
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Joined: Fri Feb 08, 2013 5:50 pm
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Are you sure it wasn't sucking oil from underneath?


Thu May 23, 2013 9:54 pm
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
jmarkaudio wrote:
Are you sure it wasn't sucking oil from underneath?



The old junky perfomer did, you could see the oil in the head runners and that the gakset surface angle on the intake was off just a bit. The gasket had signs of leaks and was soaked in oil. It was clearly sucking from the lifter valley. regular felpro sbc

The action intake wasn't I checked the gaskets had a good seal on both sides and came off in pieces. You can't tell from the pictures but that stuff is dry, as well in the heads. Felpro 1205

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Thu May 23, 2013 10:18 pm
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
New intake has felpro 1205 as well and it's a brand new never used intake. All intakes tightened down in correct torque pattern.

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Thu May 23, 2013 10:23 pm
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
I don't know why it didn't occur to me earlier and I had to have some1 tell me. So the singnal has increased and it's drawing more fuel. The IFR is low already and t-slots are not overexposed guess I'll open the lsab up some, so it pulls less.

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Fri May 24, 2013 2:16 am
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Joined: Sun May 12, 2013 5:21 am
Posts: 332
Location: Michigan
IDK I upped the lsab then it went real lean and now I am lower than before.

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Fri May 24, 2013 5:58 pm
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