Engine and Transmission Tech

Hey All,

Okay I have a 1989 Rover EFI system that I am using with my 215. Based on the advice of others who have used the upper and lower EFI plenum, I shaved the lower plenum (top and bottom) so the engine will fit under my bonnet (MGB roadster), cut down the trumpets accordingly, and welded up the three vacuum lines on the passenger side of the lower plenum. I have also lowered the fuel rail but the one remaining vacuum line on the driver's side of the lower plenum is still contacting it. If I don't remove this vacuum line I don't see how I can get the plenum to mate up with the manifold.

Can someone please confirm that I can do away with this vacuum line? If I can't, does anyone have a solution to my issue?

Thanks in advance for any advice!
Chris

Photos....

Passenger side vacuum lines etc welded up


Driver's side vacuum line interfering with fuel rail

I got a nice response from Peter Sherman regarding this vacuum line. He filed the bottom of it off so it would fit. I'm going to give that a go.

On the EFI note, Peter sent me a GREAT article about Rover EFI including explanations of where all the hoses go.

[www.conehead.org]

Hey Chris,

Feel free to do away with that vaccum port.
You will likely need some sort of vaccum supply. Brakes, fuel pressure regulator etc. But that can come from anywhere on the plenum.
I know that you like things tidy. So how about drilling and tapping a port between two of the splayed trumpets or the space at the right front or left rear or the lower plenum.
The port would point straight down and the hose could be hidden from view.
On the tidy thing. There should still be room to turn your injectors around so that the connectors are inside facing the plenum.
That way you can run your wiring tight to the manifold for a cleaner look.
The lower plenum is also close enough for you to remove the injector rail tabs and just use small rubber bumpers on the lower plenum to retain the injector rail.

Cheers
Fred

Just saw your post about Peter Sherman.
Great article!
We need more stuff like this.

Cheers
Fred

Thanks Fred,

That is good information. I am going to shave down the vacuum line 'bump' on the bottom first. If I still have issues I will try your suggestion.

With the EFI wiring I don't know if I will be able to run the wiring inside but I'll give it a shot!

Cheers,
Chris

Success!!!

I shaved the bottom of that vacuum line a bit and also filed down the fuel rail 'foot' where it attaches to the fuel rail and now the lower plenum fits.

And now on to fitting the side glass....

Thanks again for the input!
Chris