So, I own a gremlin that I plan to drop a turbo'd 4.0 in someday (when the amount of money I make isn't so little) and I want to fabricate and intake better than the stock one.


Is there any reason that relocating the throttle body to the front like this would not work?

 

I don't see why it wouldn't work, as long as there is room for the throttle body.

 

Would air be distributed evenly enough to the cylinders? Seems like #1 and #6 might receive significantly different supplies of air with such a differing distance to the intake, but then again I don't exactly see how that intake will be functioning with a turbo, so maybe it won't matter?

 

Being how you'll be force feeding air into the engine, I don't think it will matter much.

 

*nods contemplatively*

I do love the idea, and because it is for a Gremlin, no one can try to shut the discussion down saying that turbos are impractical for offroading as if everyone with an XJ is automatically an offroader.

My girlfriend's dream car is a Gremlin, and out ideal situation would be to find a solid roller (because the budget is tight right now) that I could later drop an engine into. Given my expertise, a Jeep 4.0 would be a very likely candidate, and I love the idea of a turbo'd 4.0 in a Gremlin.

 

Here is one I made for a VW some years ago. The manifold flange was already made. I make intercoolers and charge pipes for a few turbo guys these days but intakes don't make much of a performance difference.



IMG_2713 by Frank Wadelton, on Flickr


IMG_2712 by Frank Wadelton, on Flickr

 

Any manifold will work since you will be pressurizing the air coming in. If u were to take the TB opening an shift it to the outside edge of the stock it would leave the long runners to aid in velocity in higher rpms an help keep a balance in airflow between the cylinders.

 

that look nice!

 

This is the kind of intake plenum I've seen on the rb26 (skyline 6 cyl) and they handle boost well, but I think doing a cylindrical kind of thing like the guy with the VW intake would work a lot better. This is still in the planning stage because I only make 3$ an hour + tips, and there are still issues with the car itself that I need to focus on. I'm more interested in having the throttle body on the front of the plenum rather than the shape of the intake. I am seriously uninterested in an unintercooled boost setup.

 

The greedy intake i had on my rb25 ran a little lean on the two end cylinders.The spark plugs on both cylinders told the tell.You could do like i seen on some 12 valve cummins a log manifold with two inlets spaced about even apart from each other.I know a diesel don't have a throttle body but air flow is still air flow.

 

Exhaust runner pairing and length are much more important than your intake