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L28 - 350Z 6 Speed Transmission Adapters


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#1 240hoke

240hoke
  • LocationNC

Posted 25 November 2014 - 06:12 PM

Hey Guys, 

 

I have been working on a L28 - Z33 transmission adapter.  I wanted to start a thread here to check on the current interest level so I can prioritize some of my projects (Working on L28 intake, LS2 mounting kit, In-Tank EFI pump setup, and this adapter!)

 

These transmissions are strong, plentiful, and reasonably priced used or available new if you have the funds.  The transmissions are close ratio and the shifting feel is awesome.  The updated version with the most reobust syncros is a CD009 but they will all bolt up using the same adapter.  The initial goal for the setup is to provide a mounting kit that allows for a VQ35DE 6 Speed transmission to bolt directly to the L28 with minimal modification to the transmission (no machining).  This is accomplished with an adapter plate, precision flywheel spacer, starter bellhousing, shifter relocator, and various hardware.  The resulting kit will be a little more expensive due to the additional parts but the ease of installation I think will be work it.  I am confident I can do a 'machined' version similar to the Z32 setup but I wanted to start the first prototypes as the no-machine design and analyze the setup from there. Right now the L28 clutch and flywheel will be used, but I have considered doing a custom flywheel which would eliminate the spacer and allow for a 350z clutch to be used but I think the cost would be prohibitive. 

 

Current Project Status: 

- L28 block and Z33 bellhousing mounting patterns and center lines were measured very accurately using a vertical milling center and a CMM. 

- Initial CAD is complete

- RP starter adapter printed and test fit with success

- Laser cut blanks for the initial prototype have been procured and are at the machine shop.

- First machined prototype expected to be cut this week!

 

I hope to have a complete kit ready to test by the end of the year and will then look for somebody who is interested in volunteering to have the transmission installed in their vehicle and then test it out! I have serial projects going on right now but I hope the timeline for this doesn't get bumped too much. The main issue that I foresee right now is the overall transmission length even with my shifter relocator (that is used for VQ35 swaps) I believe the shifter will sit a few inches back,  when I get the assembly together I will measure the shifter position and get a good feel for the difference from stock.  

 

I've attached a few pictures and look forward to hearing any thoughts or feedback. FWIW I post the most recent updates for project on my facebook page and then my website as I have time. 

 

Thanks!

Attached Files


Edited by 240hoke, 25 November 2014 - 06:14 PM.

1971 240z w/ VQ35DE

www.HokePerformance.com

Modern Performance. Vintage Style. 

FaceBook Page


#2 grretc

grretc
  • LocationSF Bay Area

Posted 25 November 2014 - 06:39 PM

Oh wow, sounds very interesting. I will be keeping an eye on this project. I had no idea you had a Facebook page.. time to go like it. 


I've been looking back at your l28et stuff recently, and was drooling over the intercooler setup that came from you currently in the for sale section. 

Let's see if I can source a good Z33 transmission around here....


Z hoarder


#3 NewZed

NewZed
  • LocationWashington County, Oregon

Posted 25 November 2014 - 07:07 PM

Interesting transmissions.  5th gear is direct, super low 1st, and the later models comes with triple cone synchronizers in 1st, 2nd and 3rd.  Must be super smooth.  Looks like they used about a 3.54 diff drive also.

 

 

Attached Files



#4 Dan_Austin

Dan_Austin
  • LocationSan Jose, CA

Posted 25 November 2014 - 08:12 PM

I had a quick peek at your new website and noted a LS2/T56 swap project in the works, so I feel less

odd asking, but what about the same concept using the T56?  A custom friction disk would be required,

and perhaps a pilot bushing, both of which can be sourced far easier than a custom bell housing or

adapter for the L6 (unless someone with the right skill is interested). 



#5 tecreatta

tecreatta
  • LocationHouston

Posted 25 November 2014 - 10:08 PM

I'm interested if you can keep the entire kit at a reasonable price.


Women and Zs are somewhat alike. Both will take your money and drive you crazy. The only difference is after a while women lose their sex appeal.

#6 240hoke

240hoke
  • LocationNC

Posted 26 November 2014 - 04:26 AM

Dan, Its interesting you mention the T56, as many guys with LS motors are swapping it out for the Nissan CD transmission, check out Collins adapters.  The T56 is very expensive used compared to the CD009 transmission which can be had NEW for the same price as a used T56.  From my standpoint it would be be harder are more expensive to adapt although very doable as many people have done so but it takes custom work.  The CD trans got an initial bad rap due to some syncro issues from the earlier years however the 009 version has proven to be bullet proof and hold very high power (more then anything I have seen from a L28).

 

Thanks for posting the ratios NewZed,  I have added the Z32 ratios for comparison (The pdf is more clear if you want to download it).  First gear is very short and may require a lower diff like a 3.54 or 3.36 for the drag racing guys.  I am running the VQ35DE and 6 speed transmission in my car with a 3.7 rear.  First is short but I like the acceleration with N/A, and you're right the driving feel is great, shifting is very direct and the trans is smooth.  I have had the earlier, none CD009, transmissions in my 350z and my 240z and haven't had any issues with them. 

 

Ill keep everyone posted on the progress.  

Attached Files


Edited by 240hoke, 26 November 2014 - 04:34 AM.

1971 240z w/ VQ35DE

www.HokePerformance.com

Modern Performance. Vintage Style. 

FaceBook Page


#7 takayuki

takayuki
  • LocationEdmonton, Alberta

Posted 26 November 2014 - 07:18 AM

will there be a way to retain the stock speedo cable setup?



#8 harlest

harlest
  • LocationMadisonville,LA

Posted 27 November 2014 - 08:50 AM

Following this one! I'm in if the price is reasonable!


The 6 Million dollar 1978 280z


#9 260DET

260DET
  • LocationWarwick, Q, Australia

Posted 27 November 2014 - 10:51 PM

You know your market but I would have thought that the five speed Z32 box, which is still available new and in improved form, would be a better choice. One thing I've wondered about is if the lower fifth gear from a Patrol gearbox would fit, for racing the standard Z32 fifth gear is too high. Current Z32 box is a good one, improved syncros for starters.



#10 garvice

garvice
  • LocationBrisbane, Au

Posted 28 November 2014 - 12:34 AM

Austin has already done a z32 to lseries conversion Richard. Don't have an l series anymore but good luck with it.

#11 harlest

harlest
  • LocationMadisonville,LA

Posted 28 November 2014 - 08:11 AM

240hoke,

I know you said you were doing the shifter re locator but how well is that coming? I would love to be able to keep the stock console.

I'm really interested in this! I think this will be the best mod for the Z yet.


The 6 Million dollar 1978 280z


#12 Tedr03

Tedr03
  • LocationHuntsville

Posted 28 November 2014 - 09:55 PM

100% in to see a final product and price. I love those transmissions.

#13 240hoke

240hoke
  • LocationNC

Posted 29 November 2014 - 04:27 AM

Hey Guys, 

 

 

will there be a way to retain the stock speedo cable setup?

No I dont believe using your stock speedo will be an option, either a GPS or drive shaft pickup will be required.

 

You know your market but I would have thought that the five speed Z32 box, which is still available new and in improved form, would be a better choice. One thing I've wondered about is if the lower fifth gear from a Patrol gearbox would fit, for racing the standard Z32 fifth gear is too high. Current Z32 box is a good one, improved syncros for starters.

Yes the Z32 5 speed is a great box.  I designed an adapter for this a few years back and still produce them.  If you are interested in one they are available through my webstore.  That being said I also see this CD adapter as potentially a better overall layout, and while the current Z32 adapter has worked great I may explore updating the Z32 design to match!

 

240hoke,

I know you said you were doing the shifter re locator but how well is that coming? I would love to be able to keep the stock console.

I'm really interested in this! I think this will be the best mod for the Z yet.

I have already deigned and produce a shifter mount that many people use for VQ swaps,  it moves the shifter forward by a little over 4".  My transmission is apart right now but once the adapter plate arrives I will be bolting everything together and can check the stack up.  Moving it further forward I think is feasible but will require some work,  I have not started on a new design but will once I determine if it is required. I've attached a picture of the current mount.

Attached Files


Edited by 240hoke, 29 November 2014 - 04:34 AM.

1971 240z w/ VQ35DE

www.HokePerformance.com

Modern Performance. Vintage Style. 

FaceBook Page


#14 duragg

duragg
  • LocationPhoenix, Arizona

Posted 29 November 2014 - 06:57 AM

What's the weight of the FS6? 130 or so?

------------------------------------------------------------------------------------------------------------------------
1973 S30 (Gutted & caged NASA ST3) 2252lbs (dry & vacant) / VQ35HR/ 4.375 CLSD R200 / GC-Koni doubles / 275 R7s / Safety is a priority.


#15 Dat260Z

Dat260Z
  • Locationsavannah,ga

Posted 04 December 2014 - 06:25 PM

subscribed here and on FB!


Late 74' 260z L28/p90 with round top SU's daily driver for 3 years. Pulled drivetrain recently for paint , delete everything in engine bay/wire tuck for L28et with SDS EM4-6F. Suspension consists of: TTT front and rear control arms, TC rods , Ron Tyler diff mount, TTT coilvers (soon to be sectioned strut tubes with new inserts), z32 30mm front brakes with 11.6" vented rotors. Rear brakes are JSK rotor hats, 12.2" vented rotors with 4 piston C2P aluminum racing calipers. Stainless brake lines on all 4 corners . R200 3:90 open rear end at the moment, hopefully upgrading to an LSD unit after the turbo swap is complete

#16 ihiryu

ihiryu
  • LocationKilleen, TX

Posted 05 December 2014 - 09:32 AM

will there be a way to retain the stock speedo cable setup?

 

Sorry for intruding, but the cars that use these transmissions (350-370 and their infiniti counterparts) use the wheel speed sensor for speed readings.  So unfortunately you won't be able to, you'll can use a driveshaft pick up unit (mount a magnet on the driveshaft, and a sensor picks up the reading, but has to be programmed), or you can use a GPS speedo, or a GPS unit to speedo.  Autometer makes the GPS unit to speedo, but only works on electronic units (so cable driven doesn't apply).

 

Also, be careful, the CD003 (early units) have issues with synchros (but are known for holding good power) and generally go for about 300-500.  The CD0009 (the good one) cones in two different flavors.  1) for 05-06 350z/G35, and 2)Late 350z (07-08), 370z, and G37.

 

The main difference between the two is the early and late CD0009 is mainly the the external slave and internal slave.  There are also a few minute differences (the input shaft is 10mm SMALLER on late units).  Ideally you want the external slave version, if you use the internal slave portion, you'll have to come up a few things to make it work (Colin's adapter already makes a kit for this though, but you'll have to shell out an additional 400 bucks).

 

However, you can purchase a CD0003, and upgrade to an early CD0009, you will need a few things from the them though; Clutch forks, pilot bearing, shifter, shifter tripod linkage thing are all different.  Slave cylinder, and driveshaft are the same though. 

 

Same deal with the late/early CD0009, the driveshaft is the same, and the shifter SHOULD be the same, but I'm not sure, as most do not OPT to go this route, but Nissan did fix the issues with between the early and late CD0009's too.  Early CD0009's have an issue with 5 and 6 gear grind, and they fixed it on the late CD0009's.

 

As a shameless plug for my information I do have a CD-series transmissions for sale.  I have a late CD0009 and a CD0003 for anyone who wants to purchase them.  I do get these transmissions pretty often though as they are a good option for 2jz fellas since you can do the entire swap for the cost of just the Gertrag trans

 

Also, the main reason to use any of these transmission is: 1) gearing is amazing, 2) are readily available, 3) have been known to hold about 1000 HP :)


Edited by ihiryu, 05 December 2014 - 09:34 AM.

Contact me for cheap prices on speedhut gauges, many, many, other things

http://tinyurl.com/SpeedHut-Group-Buy

If we've done business and you were satisfied, a simple "Like" on our facebook page would be all the "thanks" I'd need!

https://www.facebook.com/KRMotorsports


#17 Antonio

Antonio
  • Locationcolumbia, tn

Posted 06 December 2014 - 03:20 PM

How much? Def interested

#18 ihiryu

ihiryu
  • LocationKilleen, TX

Posted 06 December 2014 - 03:54 PM

Shoot me a PM, I don't want to take away from the OP's thread


Contact me for cheap prices on speedhut gauges, many, many, other things

http://tinyurl.com/SpeedHut-Group-Buy

If we've done business and you were satisfied, a simple "Like" on our facebook page would be all the "thanks" I'd need!

https://www.facebook.com/KRMotorsports


#19 240hoke

240hoke
  • LocationNC

Posted 14 December 2014 - 07:16 PM

Hey Guys, 

 

I wanted to update this thread with a couple pictures of the adapter plate progress.  I had to shift priority off the adapters for a bit but the machining is finally underway!  

Attached Files


1971 240z w/ VQ35DE

www.HokePerformance.com

Modern Performance. Vintage Style. 

FaceBook Page


#20 Tedr03

Tedr03
  • LocationHuntsville

Posted 14 December 2014 - 07:20 PM

Looking good!




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