Intake Manifolds

[jRuN]

Installed a Wagner manifold today, spent a decent amount of time making lines to reroute the evap under the manifold, also rerouted the engine harness.

Note: if you plan to use a phenolic spacer with a Wagner manifold you will need the following:

-Light modification to the manifold is required for additional clearance to the cylinder head
-Spacers/modifications to mounting brackets

Can you elaborate on what was necessary to move the evap stuff and also the engine harness wiring?

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[razorlab]

Can you elaborate on what was necessary to move the evap stuff and also the engine harness wiring?

Engine harness wiring goes under the manifold pretty easily. Reroute it with the throttle body off. Comes out right over the alternator.

You can see how I routed it in the photo below. As far as EVAP, 3/8 fuel line works just fine, then you can route it however you want. You do need to slice off the OEM lines off their respective fittings.

 

[MYA90SUPRA]

Engine harness wiring goes under the manifold pretty easily. Reroute it with the throttle body off. Comes out right over the alternator.

You can see how I routed it in the photo below. As far as EVAP, 3/8 fuel line works just fine, then you can route it however you want. You do need to slice off the OEM lines off their respective fittings.

Does your wiring harness rub at all? It's hard to tell in the picture.

 

[razorlab]

Does your wiring harness rub at all? It's hard to tell in the picture.

Rub what?

 

[MYA90SUPRA]

Rub what?

Where it routes over the alternator and under the intake manifold.

 

[Thraxbert]

Can you elaborate on what was necessary to move the evap stuff and also the engine harness wiring?

The OEM evap lines are cumbersome as they're hard plastic with modest flexibility and cannot easily be re-routed. On larger manifolds, the hoses simply won't reach the tee that takes the evap system down under the car. But if you hit those hoses with a heat gun, you can easily slice them with a box cutter and harvest the connectors. The connectors can then be inserted into SAE J30 R14 Type 1 hose for routing wherever you like. These hoses are rated for low pressure EFI and, more importantly for evap, have low permeability to fuel vapor, even with ethanol. You can buy it at an auto parts store.

The wiring harness does not need to be moved. It can sit on top of the TB (larger manifold), or on top of the IM itself (smaller manifold). But it looks a lot cleaner if you just route it between the alt and the IM on the underside of the IM.

 

[razorlab]

Where it routes over the alternator and under the intake manifold.

Basically impossible for it not to touch anything. I wrapped some heat wrap around it just in case.

 

[Alec-RemnantPerformance]

Yes I definitely recommend routing the harness under the TB/IM. It’s much cleaner. We removed the plastic cover and wrapped the loom in the gold thermal tape that we include in the turbo kit.

 

[KBGT]

EOS manifold is expensive and as expected very nicely put together. The install kit contains everything needed and the components are high quality. The DME wiring is easily modified to route between the alternator and manifold. The evap/mamifold lines are relocated under the manifold. Heat gun worked great to harvest the oem fittings off the hard plastic lines. Oil filter access is adequate.

 

[Maki2282]

I just received the Wagner intake manifold. I will give more information when it is installed.

 

[MYA90SUPRA]

EOS manifold is expensive and as expected very nicely put together. The install kit contains everything needed and the components are high quality. The DME wiring is easily modified to route between the alternator and manifold. The evap/mamifold lines are relocated under the manifold. Heat gun worked great to harvest the oem fittings off the hard plastic lines. Oil filter access is adequate.

That's a tight squeeze between the alternator and intake manifold with the wiring.

 

[razorlab]

That's a tight squeeze between the alternator and intake manifold with the wiring.

All the flex is at the ECU side. There is a ton of slack there.

 

[Nugs]

My wiring harness is just kind of dangling on top.

 

[Loco38SUP]

The OEM evap lines are cumbersome as they're hard plastic with modest flexibility and cannot easily be re-routed. On larger manifolds, the hoses simply won't reach the tee that takes the evap system down under the car. But if you hit those hoses with a heat gun, you can easily slice them with a box cutter and harvest the connectors. The connectors can then be inserted into SAE J30 R14 Type 1 hose for routing wherever you like. These hoses are rated for low pressure EFI and, more importantly for evap, have low permeability to fuel vapor, even with ethanol. You can buy it at an auto parts store.

The wiring harness does not need to be moved. It can sit on top of the TB (larger manifold), or on top of the IM itself (smaller manifold). But it looks a lot cleaner if you just route it between the alt and the IM on the underside of the IM.

I like your thinking.

-RJM

 

[Evolution]

@Thraxbert has ruined me for not being able to un-see stuff like this.....

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