EF-onward Intake on EA - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

juarez · 11-02-2003, 16:38

Just wondering about a few things to do with putting an EF manifold on an EA.

Installation:
First, is it an easy fit or do you have to modify anything suck as brackets?

Can you continue using the EA airbox?

Does the throttle cable have to be altered/replaced?

Are there any threads with info on how to do this?

Do you have to modify anything to fit the required sensors into the manifold?

Power:
What power gains are you likely to see?

Is there a noticeable gain in power or torque? Does it seem like a worthwhile mod for the gains?

Cost:
How much does it cost for a second-hand EF manifold (roughly)? Would an AU manifold fit, and would that be even better than an EF manifold?

Are there any other expenses, such as gaskets, replacement cables/piping/electronics?

old_mate · 11-03-2003, 01:23

going from what I have read

1. Fit is pretty straight forward, make sure you get all your vaccum lines though.

2. you cannot use EA airbox.

3. Im almost sure throttle cable needs to be replaced, but someone who has one it will be able to say for sure

4. In the tech section you should do a search, there is lots of info there (you'll find that this thread will probably get moved there anyway)

5. you have to set up a RPM switch circuit to get the manifold to swap runners. Otherwise, most people jam it on long runners.

I dont think anyone has ever given power gains in terms of KW but most people are happy they did the conversion. Soxx, Bass Crazy and Walkinshaw would be the people to talk to, they have done this mod before.

NZ · 11-03-2003, 02:37

Jamming it on long runners would just mean you got an upturned version of the stock manifold

Walkinshaw · 11-03-2003, 03:00

you will need

manafold+injectors etc
gasket
intake pipes/box/snorkle
EF/L thermostat housing+pipe (to use snorkel)
Throttle cable + rocker cover (or bracket to hold cable)
and a VVS to switch the runners
RMP switch in place of EF/L ecu

its an easy swap.

In EAI and II the AC pipe is in the way, but gently bending it down when installing the manafold is easy. No brackets neaded to be changed on my ex CFI motor.

94EF_Ghia · 11-03-2003, 03:51

yeah i was gonna get mine changed over, theres a few plugs and things diff not to bad tho i was told

mongrelEB · 11-03-2003, 14:44

Plugs - TPS and ISC. Unless you have an ED. :)

94EF_Ghia · 11-03-2003, 17:46

Yeah speak to mongrelEB, he knows.

Oh and by the way Alex my mate likes the idea of a EF intake on his ED, got a price?

Rmyers · 11-03-2003, 18:20

Also I believe to get maximum benefit you may need to do a little inlet porting as the EF> have bigger ports than EA's. Another thing that simon mentioned to me was that the water pipes that go from the water pump round the back of the engine need to be changed to EF ones, not sure on this though...

BoZZa17 · 11-03-2003, 20:37

i dont see the point of doing this mod. =\ i really dont.

Rmyers · 11-03-2003, 21:58

well if your doing a multipoint conversion, why not? it's different, looks better, and does improve low down responsiveness.