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Author Topic: Intake Manifold Mis Alignment  (Read 387 times)

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ltank

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Intake Manifold Mis Alignment
« on: February 07, 2020, 10:02:15 AM »

My S&S V124 heads have small lip around the lower section of the intake ports. When you place the manifold in place with mounting hardware there's a step. Not a smooth transition to the heads. The inspection mirror shows. If the lip on the head is machined away the intake gasket will not seal correctly. Hmmm.
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Unbalanced

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Re: Intake Manifold Mis Alignment
« Reply #1 on: February 07, 2020, 12:58:26 PM »

What’s the OD of the intake?   What intake flanges are you using?   Which gaskets are you using?    What does the outside of port picture look like where the flange and seal sit?
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ltank

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    • CVO1: 2000 FXR4 S&S V111, CustomS.S. 2-1 exhaust, Primo-Rivera OD 6 speed, 49mm Custom Front End Ohlins 30mm Fork cartridges , Hyperpro Shocks, Barnett Scorpian Clutch
    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
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Re: Intake Manifold Mis Alignment
« Reply #2 on: February 07, 2020, 06:15:35 PM »

It's the stock heads and intake on a S&S V124. Even after torquing the heads down and taking care to bolt it all up the intake manifold lines up a little better. The flat machined section of the head intake port is the same diameter as the stock manifold. I believe it's a bad casting.
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ltank

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    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
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Re: Intake Manifold Mis Alignment
« Reply #3 on: February 07, 2020, 06:22:59 PM »

Motor has 36k miles, it started off as a S&S V124 LC
Custom built by S&S special order. I later updated 585 cam to 600, got new beehive Springs that broke then went to Fueling Endurance beehive Springs  and one of those failed, 5I miles later.
  Screw Beehive Springs I have Dual Springs with Dampers now. Going with Powerhouse 595E cam.
Almost exactly same timing as 640 cam but a 595 lift
Now has 10.8:1 flat top pistons
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ltank

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    • CVO2: 1983 88" Shovelhead Won the World of Wheels 1985 Sept 85 Issue of Hot Bike Mag
    • CVO3: 1989 FXRS, 1990 Custom 100" Shovelhead/ EVO
Re: Intake Manifold Mis Alignment
« Reply #4 on: February 07, 2020, 06:24:48 PM »

5k miles type error
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ltank

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Re: Intake Manifold Mis Alignment
« Reply #5 on: February 07, 2020, 06:54:17 PM »

This may explain better
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