Cebby

No on the trans. I just got back from Florida last night - been there since Friday.

We were supposed to pickupp the engine today and tow the Runner to the raceshop, but the warehouse's forklift quit We are going to try again this Friday.

I have somewhere to try (nearby) for the trans.

Cebby

The day has come....

I got the Runner moved down to the raceshop today along with the motor. I'm going to head down later to do a little prep and take a few pics...

Phisherman

Will you have to get a new drive shaft since the trans is different? Do you know if the A340E, from I don't know, say a 4Runner, would bolt up to that bell housing?

Cebby

I'll be getting new DS's due to the addition of a Crawler while I'm at it. The trans is the same length though. I will be pushing mine back a touch to ease space contraints up front. All of the a34x trannies will bolt to the bellhousing. You also need the correct torque converter.

For example, an A340F or even my A340H will bolt directly to it. I'm using the LS400 trans for three reasons - #1, I know it will "talk" to the ECU (shifting and speed sensors etc) and #2, I know it can take the power. And the big #3..., when I add the tailhousing and output from the A340F, I can bolt up dual cases and maintain my passenger side drop (Using Marlin stuff of course ). This is another reason I'm not just bolting the bellhousing to my existing A340H.

I'm killing several birds with one stone...

I wish I had the $$$ to do an SAS now also, but it will have to wait a while...

Cebby

Not much of an update. The Runner is back out in the elements. The owner of the shop blew up the V10 in his Dodge dually, so he is getting a rebuild. Since I had the prime slot, I got bumped out.

It's OK really. I still need to get my Marlin adapter here and a donor A340F.

mt_goat

Are the leaking issues of the Marlin adapters holding you up too?

Cebby

No. Definitely abberations I'd say. If it is the same piece and some leak and some don't, sure sounds like an install issue to me.

BruceTS had mentioned that all of his bolts were loose after 200 miles - I'll bet some folks haven't rechecked their bolts - although, I think Bruce is probably just a touch harder on his rig than most.

mt_goat

The leaking I'm refering too is an internal leak between the tranny and transfer case. The ATF from the tranny leaks into the transfer case, I know one guy that has to check his ATF daily and said he looses about a quart a week into the transfer case. I'll have to ask him if he drains it out of the transfer case to keep it from over filling. Marlin has said they have a new design in the works and should be ready in a few weeks, but they have been saying that for a few months now.

Cebby

I didn't know about the internal leak...

I thought you were referring to the external leak on the case-to-case junction that is a current topic here (somewhere). So you are referring to the trans-to-case junction (ie. V6 adapter) I'm assuming. Thanks for the tip. I don't need to get it right away. If it's truly a couple of weeks out, then I can wait. I can fit the motor/trans and worry about the tcases later.

I'll need to ask around on the Marlin board and see what I can dig up. Cheese has this setup, maybe he will chime in. I PM'd him a few days back about something else.

I bought an engine stand today so I can get the motor off of the pallet it came on and start to figure out the bracketry to use all my 3.0 accessories on the "new" motor.

mt_goat

Yeah, on the V6 adapter. Is that what you are going to use?

Cebby

Yep. Attached to an a340f tailhousing.

sschaefer3

As far as I last heard, Marlin was not going to sell anymore MC09 front adapters for an Auto until he gets the coupler right.

Mine was installed at Marlin shop and leaked, I fixed it myself. It still shifts oil levels. Cheese still has a leaker last I heard.

Cebby

The MC09 connects a gear drive case to the stock case, right? Is there another adapter needed to connect the trans to the t-case?


For the newer rigs, I thought the order was this:

A340F | V6 ADAPTER | GEAR DRIVE REDUCTION BOX | MC09 | STOCK T-CASE


What I plan to do is use all old stuff (cases) behind the trans:

A340F | V6 ADAPTER | GEAR DRIVE REDUCTION BOX | MC07 (or 08) | GEAR DRIVE T-CASE (w/4.0's likely)


Am I missing anything?

sschaefer3

Yes you are. The V6 adapter is for the 3.0 V6 to the Old Junk Gear Driven Case.

The front MC09 is 3.4 Auto/Manual or 2.7 Auto/Manual to Old Junk Gear driven.

So "welcome to our world" here is what your looking at:

A340F | MC09 Front Adapter | GEAR DRIVE REDUCTION BOX | MC07 (or 08) | GEAR DRIVE T-CASE (w/4.7's)

Get the 4.7 gear, it's right on the money.

Glenn

Steve,

What makes them "Old Junk Gear Driven Cases?" I was under the impression that gear drive transfer cases were preferable over the chain drive units.

Cebby

That's a term of endearment - trust me.

sschaefer3

Old Junk is the web term for anything older than 1995.

Like a guy on Pirate will say: I broke my junk. or Get your junk fixed.

Since we have "new" trucks, the pre-95 is "Old Junk"

I have that gear driven case in my 1999 4Runner.

Cebby

Yep - sure seems that 4.7's are the way to go. Basically, using the 4.7 low in the rear case by itself is the equivalent of (2) stock 2.28 cases (close anyway). So by having the 4.7's I really get 3 low gear choices (2.28, 4.7 and 10.716) instead of 2 (2.28 and 4.56). As Cheese said, I should put 4.7's in one case while I'm in there.

I did some more digging on the adapters. Thanks for the info Steve. For example the V6 auto unit is 34-AT. The adapter included in the V6 dual ultimate kit is a 30-4GT (for behind a 3.0/5 spd). Since the adapters are the same price, I think Marlin will likely do the package with the 34-AT adapter that I need.

mt_goat

I guess I was using the wrong term when I said V6 adapter, so what's leaking is called a MC09?

I called Marlin yesterday and talked to Dean and he estimated it would be 6 months before there was a new design ready. So it looks like I'm on hold for any swap until then. I sure would hate to invest thousands rounding up a donor truck only to find Marlin has decided they can’t find a solution to the problem or it’s not going to be profitable.

I also talked to the guy I know that did a 3.4L auto swap and he's draining off his t-case once a month and filling his tranny about once a week with daily checks of the level. He said it leaks like a sieve. He said he has been pressing Marlin hard for a solution for a year now.

Cebby

The MC09 is the adapter that connects the geared case to the stock 3rd Gen reduction box/t-case. This keeps those guys with a driver side drop.

Not sure what swap you are considering, but on your generation of rig, you would use an MC07 (or MC08) with two old style gear driven cases to keep your passenger side drop. You would not use the tcase that is behind the 5VZE/a340f.

This is all assuming you are doing a doubler while you are at it.