Single or duelplain manifold? Options

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GMH1975		#1 Posted : Thursday, 9 March 2006 3:28:37 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 14/03/2005(UTC) Posts: 190		Hi im thinking of buying a harrop manifold to suit efi heads on a 308. My engine is an hsv enhanced 308 with approx 185kw and t700 trans. would i be better off with a single plain or duel plain manifold ? Not the BLOODY Kingswood
		Not the BLOODY Kingswood
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HK1837		#2 Posted : Thursday, 9 March 2006 5:37:33 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,746 Thanks: 1 times Was thanked: 519 time(s) in 495 post(s)		Cam, exhaust, carby, gearing, car, driving?? The answer will depend upon all these questions and more.
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CherryBomb		#3 Posted : Thursday, 9 March 2006 8:21:42 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 29/01/2006(UTC) Posts: 220		Tp be short and sweet about it: A single Plane Man will push the Torque curve up, And in return be doughy down low. Not recommended for a daily street car! A dually will increase the incoming charge, And in return be more user friendly for the Stree
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GMH1975		#4 Posted : Friday, 10 March 2006 2:39:44 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 14/03/2005(UTC) Posts: 190		BYRON Cam ....no idea Exhaust.........vn manfolds and single 2 1/2 inch system Carby.........fuel injected gearing..........turbo 700 and 3.08 gears in the ass end Car ..........HX Kingswood sedan Driving...........I have a heavy right foot Not t
		Not the BLOODY Kingswood
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HK1837		#5 Posted : Friday, 10 March 2006 4:13:57 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,746 Thanks: 1 times Was thanked: 519 time(s) in 495 post(s)		If it's fuel injected why not use the Holden valley? You would only need a single or dual plane Harrop valley if you were looking to run a carby. If that were the case I'd buy a dual plane and run a sorted quadrajet.
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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GMH1975		#6 Posted : Friday, 10 March 2006 5:10:11 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 14/03/2005(UTC) Posts: 190		Im thinking of running airconditioning and i cant do it with the bunch o bannanas setup because the inlet tube is in the way Not the BLOODY Kingswood
		Not the BLOODY Kingswood
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CherryBomb		#7 Posted : Friday, 10 March 2006 5:46:09 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 29/01/2006(UTC) Posts: 220		Do Harrop even make a Duel plane yet?......... The Singles aint that Low either! There a Higher placed than normal Manifold. Active Auto made a Low level EFI Manifold a few years back with Dual TB at the front, Looked tough, And performed well. COM
		Never stop being inspired, You may never realize your full potential.
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GMH1975		#8 Posted : Friday, 10 March 2006 6:14:12 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 14/03/2005(UTC) Posts: 190		Harrop do have a duelplain acording to thier website. Harrop aint cheap but COME id have to mortgage the house LOL. Anyone else make aftermarket manifolds for the efi heads? Not the BLOODY Kingswood
		Not the BLOODY Kingswood
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HK1837		#9 Posted : Friday, 10 March 2006 6:48:17 PM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,746 Thanks: 1 times Was thanked: 519 time(s) in 495 post(s)		Redline now have John Cain's old moulds and make a dual plane valley to suit a carby, but it has bosses for injectors I think. You just use a 4-barrel throttle body in place of the carb.
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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GMH1975		#10 Posted : Friday, 10 March 2006 7:06:06 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 14/03/2005(UTC) Posts: 190		But are they made for efi or non efi head? Not the BLOODY Kingswood
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Guest		#11 Posted : Saturday, 11 March 2006 10:20:45 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		A dual plane manifold would be better but there are a few catches. You will need to modify your injection harness slightly as some of the sensors will be in a different position (throttle position, idle motor). You will also have to drill and tap a hole i

GMH1975		#12 Posted : Saturday, 11 March 2006 11:36:46 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 14/03/2005(UTC) Posts: 190		Matt is it possible to put the alternator on the drivers side if i have power steering? would you be able to send me some pice etc of the mounts you have made? Not the BLOODY Kingswood
		Not the BLOODY Kingswood
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