Stock Lower Intake Manifold Replacement

[Chuck_13]

Failure to tighten the manifold bolts properly can distort the CRANKSHAFT BEARING BORE ALIGNMENT??

I gotta call BS on that!

 

[Pinger]

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Does it look like I put the injectors in to far?

Looks fine to me.

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Can someone help me out here please? I'm really not understanding this set up at all!

Looking at the photos - why are there electrical connections at the ends of the pipes? I thought the injectors were all grouped together in the plastic (spider?) block and the tubes came from there into the ports where there's purely mechanical (automatically opening) poppet valves.

Doesn't all that pipery interfere with air flow? And how does it not get burned with EGR?

What am I missing here? (A brain?)

 

[east302]

He has swapped the original poppet injectors to the MPFI. Here’s an article that goes a little into the difference:


https://www.fourwheeler.com/how-to/1012or-csfi-to-mpfi-vortec-engine-fueling-fix/

 

[Pinger]

He has swapped the original poppet injectors to the MPFI. Here’s an article that goes a little into the difference:


https://www.fourwheeler.com/how-to/1012or-csfi-to-mpfi-vortec-engine-fueling-fix/

Thank you!
I'll look into this when I get a moment.
I'm running on LPG (propane) and I'm going to be changing my inlet manifold gasket soon. Looking at simplifying the gasoline side (without ditching it) and progressively optimising the engine around the LPG system.