WUR and fuel distributor rebuild recommendations

[ptashek]

I'm looking to get the fuel distributor and WUR off of my 350 rebuilt, since I can use both on the 450.
Anyone got any recommendations for vendors who do this reliably? Is it a massive job to get right DIY style, without specialised equipment?

There's these folks: http://www.k-jet.biz/
Any experiences?

[karmann_20v]

Although I haven't used them yet, I read good things about Larry @ CIS Flowtech. You can research the R107 forums and find some valuable info

http://www.cisflowtech.com/

[UTn_boy]

I second KARMANN_20V's recommendation, as I've had personal dealings with Larry for the same reasons.  Never had a problem. 

And no, if the tooling and a test bench isn't in your possession, then don't try to play hero.  I learned that the hard way a long time ago. 

[ptashek]

Great. I'll check those folks out.
Thanks for the tip.

[s class]

Use CIS Flowtech. 

[arcijack]

Larry at      flowtech is great, lives not to far from me rebuilt mines, Bosch recommended

[carl888]

I'm looking to get the fuel distributor and WUR off of my 350 rebuilt, since I can use both on the 450.
Anyone got any recommendations for vendors who do this reliably? Is it a massive job to get right DIY style, without specialised equipment?

There's these folks: http://www.k-jet.biz/
Any experiences?

Whilst I cannot comment on the shop in question, I do my own K-Jetronic work and therefore the process cannot be difficult.  The diaphragm in the fuel distributor is readily available and easy to replace.  You MUST observe absolute cleanliness.  The trick to K-Jet is making sure your distributor and piston is serviceable and the most important, setting up the differential pressure of the distributor.

The Bosch K-Jetronic test bench does this from the fuel distributor only which does not take into the lines or injectors.  It's easy to do yourself by purchasing 8 accurately calibrated glass jars and adjust the flow at a given air meter opening to flow the same from the injectors.  You'll also need to try this at different control pressure settings as well.  It sounds a lot more complicated than it is.  It's a good opportunity to replace the injectors and seals, they are so cheap now it renders cleaning them uneconomic. 

[ptashek]

Whilst I cannot comment on the shop in question, I do my own K-Jetronic work and therefore the process cannot be difficult.  The diaphragm in the fuel distributor is readily available and easy to replace.  You MUST observe absolute cleanliness.  The trick to K-Jet is making sure your distributor and piston is serviceable and the most important, setting up the differential pressure of the distributor.

The Bosch K-Jetronic test bench does this from the fuel distributor only which does not take into the lines or injectors.  It's easy to do yourself by purchasing 8 accurately calibrated glass jars and adjust the flow at a given air meter opening to flow the same from the injectors.  You'll also need to try this at different control pressure settings as well.  It sounds a lot more complicated than it is.  It's a good opportunity to replace the injectors and seals, they are so cheap now it renders cleaning them uneconomic.

That's really good tips Carl. Thanks.
I've watched several videos on Youtube where people do this, and also have a K-Jet technical book to help. I'm no stranger to re-building things, just to learn how it's done properly.  I think I may actually attempt this myself, it doesn't look terribly complicated.

As for the injectors and seals, I've replaced all eight, including seals and the plastic holders (and their seals, too) as part of my restoration.