MGB + M42 = Win

[Holland]

This is how a thread debate should be, Japandrew should take note. This looks very promising and I love the concept of the vertically mounted engine.

[AndrewBird]

Just to clarify, I'm mounting the engine vertically for clearance reasons. It's merely an advantage that it looks cool.

[Farbin Kaiber]

I think a one off upper plenum could resolve some clearance issues, and cut down on vacuum/hose connections on the manifold, and generally clean up the bay, align the intake track to the chassis and look pretty darn nifty.

example being...



not saying CF, but the general line of flow.

[AndrewBird]

Are you saying get rid of the stock intake manifold and run a plenum to the front, with a throttle body on the end?

^^^That car has ITB's, which makes things a LOT different.

[LJ851]

Obviously you need to adapt some S14 TBs onto your motor!

[Farbin Kaiber]

No.

I'm saying, either machine off, or have mounting plates cut and fab up a manifold that has the mounting surface for the TB on the cyl#1 end, then mount air meter in front of radiator to get cooler air into engine, also cut down on hose mess under OE manifold and clean that whole mess up.

[dude8383]

No.

I'm saying, either machine off, or have mounting plates cut and fab up a manifold that has the mounting surface for the TB on the cyl#1 end, then mount air meter in front of radiator to get cooler air into engine, also cut down on hose mess under OE manifold and clean that whole mess up.

Wouldn't this disrupt the airflow going to the rest of the cylinders? You can use the example of the 24V swaps where they modify the intake plenum in order to clear the factory booster...

[LJ851]

ITBs FTW

[AndrewBird]

No.

I'm saying, either machine off, or have mounting plates cut and fab up a manifold that has the mounting surface for the TB on the cyl#1 end, then mount air meter in front of radiator to get cooler air into engine, also cut down on hose mess under OE manifold and clean that whole mess up.

Ok, You are talking about something like this:



It would be pretty simple as the M42 intake manifold is two piece. The first part that bolts to the head holds the injectors and is only a few inches long. A plenum could easily be attached to this, but I think at this point it is unnecessary work. I haven't even gotten to the point of worrying about the intake though. Need to get the engine mounted first.

[AndrewBird]

This is interesting:

[LJ851]

Now you're talkin. How much torque can those rearends take?

[Farbin Kaiber]

Exactly. There are a lot of options, and the 666 style, but smaller volume, and closer to the block would better suit you, but it's not the toughest thing to produce. And, yeah, the exact reason I suggested it was because of the two-piece design, and the fact that the injectors are housed separate of the upper plenum.

[acolella76]

Subscribed. I'd love to see how this works out and i'll do it to my Austin Healey Sprite.

[AndrewBird]

Now you're talkin. How much torque can those rearends take?

Guys use them with Ford 302 and Chevy 3.4L V6 conversions, so enough. They are pretty bullet proof.

Sometime in the future I'd like to go to a 4-link setup in the rear and will probably swap to a Ford 9" or similar, so for now, the stock rear end isn't an issue.

[!kid]

It looks like in the stock position, the exhaust side would actually hold a bit of oil over the valves. Not much, but a bit. Rotating it would lessen this and only slightly increase the amount that puddles on the intake side, less then the exhaust would have in the stock position. This is very good news as I now know for a fact that tilting the engine will not cause drainage problems.

i was reading through one of my ASE books last night about this. the most common cause of oil consumption issues is bad valve guide seals and or worn guides.
"A faulty intake valve seal allows oil to be drawn into the cylinder during the intake stroke."
"This results in burnt oil exhaust smoke when the engine decelerates because the oil is not being diluted with gasoline during that time."

you should be fine mounting the engine that way, a long as your valve seals and guides are in good shape. just my