Datsun Roadster Forum-311s.org

Does anyone have experience with zTherapy re-building their carbs? They seem to offer two different services for the SUs:

(1) "Service SS" Remanufactured Carbs, which seems to be the works for around $600, and

(2) "Rebushing" Service Remanufactured Bodies for $175.

Can anyone describe the difference between these two services? I'm thinking that I could save some $ by having them remanufacture the bodies (for $175), which includes their replacing the stock throttle-shaft bushings with their "roller shafts" and do the clean-up and polishing of the carbs myself. Add in $50 worth of parts from Nissan and I should be able to replace all of the wear items on the carbs myself. Would this together consitute a similar result to their "Service SS?"

Am I missing anything here?

I had a set rebuilt by the previous owner of ZTherapy. I have no experience with the new owners but have heard good things. I have had Keith William's rebuild several sets and really like his end product. The throttle bodies are a key component to good running SUs. They get worn out at the throttle shaft and leak air which makes it impossible to get them setup to run smoothly. You could save some cash by purchasing the rebuilt throttle bodies, other parts and assembling them yourself. There really is not that much to them plus you learn something else about what makes your roadster tick. Good luck.

Steve

The carbs for my 70 were supposedly in the first months of new ownership, they worked beautifully. I got them from Dean (he throws in gaskets and insulators with the deal). TR

The SS restoration is complete, all plating, finishing, repainted air cleaner with all the proper stickers. Basically new carbs when they finish. I had the set for my 70 restored by Z therapy and they looked fantasic and ran just as good as they looked. I'm running Solex's now, so the SU's are on display in my Living room (single guys can get away with that sort of behavior).

I had the SU's for my 72 Z Done by them. Along with the air box, intake manifold, balance tube and all linkages.

I've seen Keith's restorations and they are of equal quality.

If I had to do it now, I'd throw my buisness to Keith. I rather keep it in the roadster family. That's not to say, Steve and Pam are "Black Sheep", as they have 2 or 3 roadster's between them. But, they are primarly 510 people that love all Datsuns.

Thanks for the advice, guys. I think I've got a sense for what's out there. I've also heard from Keith with some advice (he's very helpful).

My "Just SUs" video is in the mail and I just pulled the carbs off the car today. Once I study up on the video I should know enough to tell what needs to be done to the carbs beyond just a clean-up, if anything, and what parts I should replace, if any. If any machining is necessary I will leave that to one of the professionals.