Transmission questions for a toyota 1kz-te engine

[xxOkieTacoxx]

Hello guys, Im new here. I have been doing a lot of research on swapping my 3.4 v6 in my 99 Tacoma for a 1kz-te diesel engine. I recently contacted diesel toys, a company who does diesel conversions on Toyotas. I asked them about what transmissions they use behind the 1kz engine when doing a swap. And they told me they use an a340 if doing an automatic and the R150 if doing a manual. My truck already has the a340 auto trans, so all I should need is the 1kz-te engine, wiring harness, and bell housing right?

[helipilot77]

I believe that diesel toys only uses half cuts for their conversions so they come with a slightly different A340 transmission. The one that comes behind the Diesel engine has different shift points programmed into it I believe. I wish you had asked this question about a year ago. My half cut came with that transmission but I used a R151f behind mine. After about a year of looking at it on the floor of my garage and trying to give it away I ended up recycling it. Check out the diesel swap child board on here, it has lots of good info. Don't hesitate to ask any questions. You're going to love driving it when it is done. They sound AWESOME!!!

[xxOkieTacoxx]

If I hook my tranny up to the diesel ecu shouldnt the ecu control when it shifts?

[helipilot77]

The tranny is controlled by a seperate transmission ECU. If you had that ECU it might change the shift points, but I would only be guessing.

[xxOkieTacoxx]

I'm thinking about going the manual trans route. It would make my life a lot easier since there would be less electronics involved. Does the r151f's transfer case come on the left or right side? That's been my biggest problem is finding a 1kz-te that has a tranny with an american driver side (left) output shaft

[xxOkieTacoxx]

Oh and I can't find the diesel swap child board?

[HogCanyonHopper]

its underneath the "Engine" board on the main forum page 

[helipilot77]

I'm thinking about going the manual trans route. It would make my life a lot easier since there would be less electronics involved. Does the r151f's transfer case come on the left or right side? That's been my biggest problem is finding a 1kz-te that has a tranny with an american driver side (left) output shaft

From everyone I have heard from who have tried both the automatic and the manual, most people seem to prefer the manual. The R-151f comes with a right hand drop t-case but Marlin sells the inchworm "LEFTY" that will bolt right onto it. http://www.marlincrawler.com/transfer-case/line-ups/single/gear-drive-left-hand-output-lefty
Boom! problem solved!
If you go with the manual transmission you will want to have the tallest differential gear ratios you can find. Tall tires also help. I am planning on sticking with 4.10's and 35" tires.

[xxOkieTacoxx]

I did some reading last night and the r150 which is used in the manual models of my truck will fit right up to the 1kz and are actually used behind the 1kz as well, which would save me some $ since I wouldn't have to get the inchworm. Though I would like to get one, money is always an underlying issue. My truck has 410's in it and I'm running 33's now. So I should be okay on that part. I did find an engine from a company in Texas which is just a hop and skip from me since I live in the southeast corner of Oklahoma. It has the engine, engine harness, ecu, and an automatic 2wd transmission. Helipilot did you have to find a diesel bell housing for the r151?

[helipilot77]

Helipilot did you have to find a diesel bell housing for the r151?

Yes I did have to get a bell housing for the transmission. Unfortunately there is no way around it. The up side is that you can still get them brand new from Toyota. Any and all gray market Toyota parts are available from www.japan4x4.com  The contact person you want is Dave Stedman ([email protected]). Very friendly fellow.
E-mail them with part numbers acquired from www.toyodiy.com and they will get back to you with a price in ¥. They accept Paypal only. Parts take about a week to get here.
You will also need all the clutch components (shift fork, shift fork pivot, clutch slave cylinder, clutch friction plate, pressure plate, release bearing, pilot bearing ) the clutch master cylinder is the same part found in your model year Tacoma with a manual trans so that can be had domestically. You will also want to get an aftermarket solid mass flywheel from roughtrax http://www.roughtrax4x4.com/?doc=11&cid=158
the factory supplied dual mass flywheels don't last.

[xxOkieTacoxx]

Sweet! Thanks for all your help I really appreciate it man!

[LittleSteve]

If it helps the uk 2kd-ftv diesel bellhousing will also fit the r series boxes. Be careful which manual tranny you pick up as the input shafts are different lengths.
If you decide to go auto they come with an a343f from the factory which has taller ratios than than the a340f
The 2.4 diesel surfs came with 4.87 diffs as do the v6 surfs.
The 3.0 diesel surfs came with 4.10 diffs.
anything else you need to know feel free to ask


 

[R.DesJardin]

If it helps the uk 2kd-ftv diesel bellhousing will also fit the r series boxes. Be careful which manual tranny you pick up as the input shafts are different lengths.
If you decide to go auto they come with an a343f from the factory which has taller ratios than than the a340f
The 2.4 diesel surfs came with 4.87 diffs as do the v6 surfs.
The 3.0 diesel surfs came with 4.10 diffs.
anything else you need to know feel free to ask


 

Yes the car trans has a higher first gear, which I think is a good idea because it makes the 1-2 shift easier to keep the power through. With an auto having a super low 1st gear isn't as big of a deal, banging through the gears without lag is what I want. Just my opinion from running a dualed A340F.

[LittleSteve]

a342e
1st 2.531:1
Rev 1.88:1
a343e
1st 2.804:1
Rev 2.393:1

The 340 has the same ratios as the 343

[R.DesJardin]

a342e
1st 2.531:1
Rev 1.88:1
a343e
1st 2.804:1
Rev 2.393:1

The 340 has the same ratios as the 343

The A341e which is the common car 2wd trans in the US is the 2.53:1 1st, the A343 is the later 4wd trans found in Landcruisers and Lexus 4x4's could find any info on a 2wd version.
I was looking here: http://en.wikipedia.org/wiki/Toyota_A_transmission