Want to buy, steal of borrow a 2V intake runner

Hi Aaron, I am in the middle of designing and having made some 2V Weber IDF manifolds. You could then use IDF throttle bodies. They should be ready in the next couple of months and I am also working on attractive air filters and a simple linkage system.
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Any IDF throttle body (like this one) will fit onto my manifolds and if you want injector bosses on the manifolds nearer the head those are easy to add to the pattern for a few of the manifolds. If you still want my old CIF manifolds, I’ll PM you in the new year once I’m finished with them.


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The EFI setup I've been doing for the last decade is a PITA on the 2v due to the angles of the injectors. I hand bend the lines. Time consuming and the brazer hates the jigging.
The problem is the port angle due to the water jacket in the head. New manifolds have to include that angle or fuel just hits the port wall and puddles. I don't care for the ITB's because of that. The F40 uses a fuel rail and has angled injectors, I'll snap a pic.

 

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Thanks, yeah total PITA, even the F40 ones. O ring flex and shallow cup but still a fight.

I've done the custom -3an top fitting and lines, not for stock injectors flow rates though and found pulsations to be a problem. So hard lines it was. One design used a distribution block with 8 ports that ran to the injectors, flex teflon lines. Finding space for all that was a pita as well.

Holding the injectors is the next problem. I do custom threaded inserts and custom injectors, threaded injectors are nothing new in drag race boosted manifold world.

I've got a new design that uses the new molded injectors. But those dang lines...ugggh. the bigger problem is cost, at certain point the cost exceeds what many will spend understandable given values. Flip side, once vehicle value gets high enough then stock CIS is retained for originality...

I mfg'd a couple 2v manifolds from carbon 66 yrs ago just for EFI though it also required a custom manifold. Cost was always the problem.

Ditching CIS will net a solid 30/30 hp/tq gain.. loads of dyno time has born that out. But that's maximum with a fresh rebuild and a CR of 10:1. Stock cams etc... The engines just weren't ideally setup for fuel injection... They scream with carbs though. QV is a leap forward and responds better.

 

Aaron this is my setup. Real PITA every time I have to remove the rail.
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Another problem that I ran into are the 2 nuts next to the TB holding down the manifold. I have no access to them and in order to remove them, the front split rails must be removed. Hoping that I will not be removing the manifold often

 

You might want to entertain the Siemens Deka injector from the BMW N62 engine. It's got a long nozzle that's almost the same length as the OEM injector., avoiding fuel runoff as Scott mentioned.
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The xT variant, those are great. The trick is adapting them to the stock manifold.

 

Oh dear god
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never seen that before.