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240hoke

L28 - 350Z 6 Speed Transmission Adapters

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Hi everyone,

 

Im new to this. I have a question hope someone can help me out. If i have this adapter, what else do i need to have it works? Can i still use my 280z flywheel, clutch and pressure plate? If not, will the 350z clutch bolt right in to my 280z flywheel? Or is it something that i need to modify? Thanks

 

Kevin,

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Posted (edited)

Posted 3 days ago

Hey Guys, 

 

I realize it has been a long time since I originally posted my adapter progress here, I worked on it for a couple months and then put it in the corner as I was working on other projects and only do this on the side...that was like over 2 years ago  :(.  

 

LS kit are now in production and the CD trans has my full attention.  I am on track to have the complete prototype together in April, I'll be 3D printing the last parts for functional fitment this weekend.  After that I could potentially get a few plates in folks hands for beta testing.  I have a local gentlemen who will be the first tester and allow me to design the transmission crossmember and other bits and pieces to make it a true bolt on, which will take a little time past the April proto.

 

So to be more specific:

March - Finalize design, 3D printed parts to compliment machined plate. Physical mockup and bench test

April - Machining prototype parts.  Prototype Mockup and bench test.  Pricing Release. 

End of April/May- Potential for first Beta testers plate only

End of May/June - Full Kit availability with transmission mount etc

 

Again here is a link to my site with pictures of the plate:

https://hokeperforma...6-speed-adapter

 

And I will be regularly updating this thread now but most up to date will be facebook:

www.facebook.com/hokeperformance

 

Just wanted to let you guys know this will be an option and I'm still alive  :)

 

-Austin

Edited by 240hoke

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Posted (edited)

Hey Guys, 

 

Update for this week.

 

Flywheel spacing has been confirmed,  the L28 flwheel and clutch is positioned using both a spacer and a new throwout bearing sleeve.  The combination of these two parts aligns the flywheel with the input shaft splines and locates the 350z slave cylinder fork correctly.  Due to the thicker dual mass flywheel (DMF) and clutch used on the 350z the 6spd trans has the correct shaft length but different spline location compared to the stock S30 transmission...thus requiring the spacers.  The great thing about this though is you may use any L series clutch which most folks will have already invested in upgrading. The flywheel spacer will be a turned component which is then ground to ensure the two mating faces are parallel within several ten thousands of an inch....I have a quote out to ARP for custom metric flywheel bolts with the correct grip length for this new setup. I have a SLA printer in house now and used it to mockup these components and check fitment: 

 

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With the clutch at home the next step was the starter location.  With the new flywheel spacing the starter has to shift to match the flywheel, this was easy enough to work into the adapter plate.  Unfortunatly the starter pockets in the CD trans line with the L series block and just dont jive with where the starter needs to be.  This will require material removal on the bellhousing, its not precision work through so it can be done by most folks at home.  I'll use basic hand tools to develop a suggested method on my transmission. Here are a few shots from CAD, I will be 3D printing this over the weekend. 

 

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With everything ready for the trans/engine mating I will be moving to machined prototypes over the coming weeks. 

The next design challenge is making a new shifter to make it line with the factory holes...it will be a bit of a challenge....stay tuned!!

Edited by 240hoke
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Hey Guys,



I am currently doing parallel designs for the VQ transmission adapter. One using an OE L-Series flywheel with a spacer and starter relocator. The second being a lightweight steel flywheel with offset clutch spacing. I really like the new flywheel route, I can have them manufactuered for a reasonable price and it eliminates the spacer, custom bolts, and starter relocater. It also elminates the need to remove nearly as much material from the bellhousing. I believe the extra money adds value to the kit.



 



I plan to offer some early adopter 'DIY Kits' for those just looking for the adapter plate assembly. They would include Plate, Flywheel, Shifter Mount (5" rearward from OE hole), and Hardware. I hope to have some pricing on this by the end of the week. As I continue with develoment I will be offering a transmission mount and a shifter that comes out of the factory hole. If you are interested please DM and email me so I can plan for the flywheel purchases...currently planning on ordering 5 leaving 3-4 for early adopters.

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I messaged you on Facebook. Was wanting to try your adapter with the VQ37 6 speeds. I happen to have a couple good ones already. Lots of shifter, hydraulic clutch, and throwout bearing kits and spacers out there for the IS300 and supra conversions. Would love to mix and match on the Z car. The hydraulic clutch spacers makeup for the adapter, just need the starter addressed.

 

Greg

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Posted (edited)

Hey Guys, Z33 kit update...The first kits are in process at the machine shops, I have a batch of 5 being made. 4 will go to those interested in an early testing opportunity and the 5th set I will be using for a local install to develope the transmission mount and driveshaft. I suspect these will be ready in 3 weeks or so but there are a few unknowns with new vendors so Im not putting a firm date out.

These will be what I'm labeling DIY kits, the 'hard' work is done but it still will require some fabrication abilities to install. Im hoping to find folks that have running cars ready to do the swap and can provide feedback...

 

What will be included: 
Adapter Plate - CNC Macined Steel, Plated
Alignment Pins - SS, Engine and Trans Side
Pilot Bearing - Bronze extended for adapter offset
Flywheel - Lightweight Steel with required offset to run L series clutch
Shifter Mount - 4.5" further forward (but still 5" back from stock location) 
Required: Trans Mount Fab, Driveshaft Fab, 280zx Geared Alt (w/o Nose)
Cost: 800USD

 

This cost has almost no markup (buying in small quanitities) and wont be offered in this manner in the future. Turn key kits will have a new 'super short' shifter assembly that moves the shifter to the stock S30 location, and a transmission mount. Current estimate is 1500 w/o driveshaft, 1800 with driveshaft but this is still an estimate as I havent designed the 'super short' shifter bracket. I was targeting a lower cost but the parts just add up especially with a custom flywheel, Im happy with how everything is looking though and it should be a great bolt in solution for those with serious builds.

If you are interested in one of the early DIY kits or just have questions please shoot me an email.

 

 

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Edited by 240hoke

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How many are spoken for?

 

Earlier post you mentioned removal of material for starter at bell-housing. and last post you didn't mentioned as required  did you revise something?

 

What will be included: 
Adapter Plate - CNC Macined Steel, Plated
Alignment Pins - SS, Engine and Trans Side
Pilot Bearing - Bronze extended for adapter offset
Flywheel - Lightweight Steel with required offset to run L series clutch
Shifter Mount - 4.5" further forward (but still 5" back from stock location) 
Required: Trans Mount Fab, Driveshaft Fab, 280zx Geared Alt (w/o Nose)
Cost: 800USD

 

Also did you revise the flywheel spacer idea or ditch it in favor of a new flywheel?

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Posted (edited)

Hey, 

 

I should have clarified on the spacer version, so thanks for asking.  For the time being I have decided to drop the flywheel spacer route.  Besides the risks associated with installing a spacer there are also additional parts that drives up the cost; spacer, custom flywheel bolts, starter relocator, and throwout bearing relocator (or longer spacer).  Adding to this is the requirement to machine or cut clearance for the starter, with the spacer in teh factory position only a small amount needs to be removed to clear the spur (if you use a 280z starter without a nose).  In the end I think the custom flywheel route is a much better choice and is a good value for the price increase...and that gap was closing fast with the additional parts required.  I am working with a vendor that specializes in flywheels and drivetrain components. The flywheel is all steel and retains the same button geometry and starter ring gear spacing while moving the clutch surface outboard.  These are on order and I am anxious to get them in my hands.  

 

Adapter plates arrived today, I will be welding in studs this weekend and getting them plated next week.

 

I have interest in all of the DIY kits, but only a couple are confirmed! 

 

-Austin

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Edited by 240hoke

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just to go on record I am in for one of the kits, but have not heard back how to confirm. I don't have a running car, but am ready to install engine and trans if that helps. Waiting on this trans kit has been one of the many reasons I have procrastinated. I have a series 1 so the trans mount will be different anyway. I did email you direct, but as busy as you are I don't expect quick answers.

Does the custom flywheel use the 225 mm regular  or the 250 mm turbo and 2+2 larger clutch diameter?

 

Thanks,

Greg

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Z33 Adapter Kit Update...I received word that flywheels were on schedule to be completed this week. Im welding studs into the plates tomorrow and they are headed to the platers. It looks like things are falling in place to have everything ready to go in 2 weeks for the early adopter 'DIY' kits. I had some folks ask about the 280zx starter. Not only is gear reduction nice this starter does not have a nose cone making it much easier to integrate with only a small amount of material removal required. I did this with a carbide burr in about 15 mintues using a 3D printed guide.

 

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Posted (edited)

Hey,

 

350z trans weighs in at 122lbs (without oil, shifter, or adapter) which I believe is 37lbs heavier than the factory 5spd. Bank on about 50lbs total. Weight is low and in the center of the car. Lighter is usually better but it's a good trade off here for a close ratio 6 spd and the torque capability of this trans, not to mention how nice it feels. Perhaps a harder decision for those with lower power engines.

Edited by 240hoke

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Posted (edited)

Early Adopter DIY kits getting close! Flywheels, pilot bearings, and alignment dowels all arrived today . Getting excited, setup is coming together. First vehicle install scehduled for mid July. Time to focus on shifter design now.

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Edited by 240hoke

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Yes, sorry I havent updated this post in a little bit.  

Im behind my scheudle a bit but still making progress! 

 

Currently there are 2 beta kits in the 'wild' and I am working on a shop installation.  With the shop install I am designing the remaining components to make this a bolt in affair. 

The transmission crossmember design is complete and is currently in process at the laser cutters, driveshaft is also in process.The last piece of the puzzle is the shifter mount which I am working on designing now.  

 

Attached are a few pictures.

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Hi, 

 

I can take measurement for both the VQ and the LS since I have done those swaps, Ill work on getting that.  I assume you are curious about the crossmember interchangability? 

 

I do have one DIY kit left right now if someone was ready to do an installation, but the entire kits is close enough it probably doesnt make sense for most. 

The crossmember laser cut parts are due to arrive Friday and I plan to weld and test fit over hte weekend! 

I am dragging my butt on the shifter mount as i have been disctracted working on my personal VQ240z...but Ill get it knocked out soon. 

 

There are a couple swaps going one right now for the brave beta testers :)

- NC, 240z (Thats me!)

- CA, 240z

- TX, 280z (Providing feedback for crossmember measurments) 

- Austrailia, 280zx (Is there any market for a full 280zx kit? Perhaps I could do a crossmember for it as well...otherwise it will be a DIY option)

 

Really looking to hear how everything goes for these folks. 

 

 

-Austin

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