K24 e30

[Slowgti]

I have a tig, a mig, a lathe, sheet metal break and a plate roller at my home shop. The f20c manifold doesn't flow that well on the 2.0 let alone a 2.4. I have sketched up a head flange I need to drop off and get milled. More things on the list to do

[FredK]

There are some custom intake manifolds geared towards doing the swap in an S2000, but they're around $750+, as they're welded aluminum. Just looking over the different manifolds (RBB, RBC) out there, it seems that flow is really optimized in the plenum/runners for the TB to be in the "wrong" orientation.

I think the cheapest solution will be to stick on an F20C intake manifold ($100) with an adapter plate (cost of cutting 1/2" aluminum plate and getting gaskets).

[unevolved]

This is badass. I want to see where this ends up.

[lukeADE335i]

As far as oiling issues: I'm running a modded oil pump and I will be building a trap door pan. Nobody else running a longitudinal K motor, with a well built pan, has had any issues with oiling.

When you were talking KA engine, I was thinking KA24DE (ie. Nissan) seeing as you bought the car set up for an SR20, and used a Z32 gearbox. These came as longitudinal engines in the 240SX, Navara Pickup etc. so the oiling question seemed weird... then I checked the pics and obviously it's the Honda K series engine :)

Cool project.

[Slowgti]

I got to thinking deeper, are you going to chop and flip the manifold, or some other solution?

I'm building a custom sheet metal intake. Big plenum and centrally mounted t-body. Started building some chassis bracing yesterday afternoon, doubling the sheet metal around the door and window openings.

[Farbin Kaiber]

I got to thinking deeper, are you going to chop and flip the manifold, or some other solution?

[Slowgti]

What about oil draining back to the pick up?

The factory oil drains are within 2-3" of the pump pickup.

[Doughnut]

As far as oiling issues: I'm running a modded oil pump and I will be building a trap door pan. Nobody else running a longitudinal K motor, with a well built pan, has had any issues with oiling. The valve train is oiled through the hollow cams and I'm leaning it over in the same way it is from the factory. As long as the pickup screen is angled correctly and is the proper distance off the floor of the pan the engine doesn't care which way it is facing

What about oil draining back to the pick up?

[Slowgti]

As far as oiling issues: I'm running a modded oil pump and I will be building a trap door pan. Nobody else running a longitudinal K motor, with a well built pan, has had any issues with oiling. The valve train is oiled through the hollow cams and I'm leaning it over in the same way it is from the factory. As long as the pickup screen is angled correctly and is the proper distance off the floor of the pan the engine doesn't care which way it is facing

[Slowgti]

The caster change isn't as drastic as it looks. I have it mapped on paper, nothing digital yet. It changes less than the stock setup though. I've been trying to find a good scale to weigh it. I want a solid number on weight and redesign as nessacery. The goal it twice the rigidity, half the weight and adjustability.

I'm trying to get my street E30 done before I start fabbing strut towers for the rear on the K swapped car.

Does anybody have any fender flares for sale? Nothing crazy just 1-1 1/2 insches over for my street car.

[E30SPDFRK]

Looks like you're going to get quite a bit of caster change with that front control arm design. Have you done any geometry plots with it?

And what are you doing about engine oiling? Will there be any issues with having the engine spun 90 degrees?


Cool swap, I'll be watching for updates.

[Slowgti]

Fredk: the bell adapter can be built for either trans. I actually just ordered a pilot bearing to get started. It will use a factory k20/24 starter and flywheel and pressure plate. Just a custom disk, the throw out bearing spacing will be included once I find something suitable and off the shelf.

I design hvac systems for a living so you can imagine how busy I have been the past few months. Once the weather cools down I will have more time to work on it.

[FredK]

You mean like a Getrag 260 from an E30 325i? I honestly think the best adapter for a BMW transmission would be one for a Getrag 250, as it has the same bell housing pattern all the way to the current ZF 5 and 6 speed transmissions. It also has the same input shaft length.

I'm definitely interested, especially in a bellhousing adapter.

EDIT: I did some research and saw that the starter on the K24 bolts to the engine block, and the bellhousing adapter just needs to place the transmission input shaft in relation to the crankshaft/flywheel.

[Slowgti]

Bump, any interest in an adapter for the k20/24 to the stock getrag? Mounts and an oil pan would be included.

[Slowgti]

The bell adapter is just a hand cut prototype right now, I am going to digitize it and get one cut on the water jet. I'll take a pic or two when I pull the motor again.

260-270 whp is doable on stock parts. 300+ is not very hard to get from these motors. I'm planning on building sleeved block once I get the chassis/suspension sorted. I'm building a T4 divided manifold for it so it would be fun to run a 68-70mm turbo and run at the ecta.