Hello Gents,

Just complete this WEBER 38 DCOE 59-60 Carburettor restoration, and i thought i’d share the process with you.

A gentleman from from within the UK approached us about restoring his Carburettors for his beloved,  Ferrari 365 GTC/4.

Car is in bits, but working through preparation of the shell for paint shop, and re-building the V12 engine from the bottom up..

And that’s when carburettors start to enter the picture!

Upon his arrival (Insisting he’d hand-deliver the carburettors), it quickly became obvious we were in for a drilling.. ‘So, how do you do that’, and ‘make this the best restoration you’ve ever done’ and ‘please take good care of them’ etc.. etc..

Thankfully, we are also motorheads and have became attached to our beloved motors and the fond memories we have experienced with them. So, we fully understood and re-assured him that we would look after his carburettors and their restoration as though it was our own!

So after a pot of fresh Italian coffee, and a good long chat to get to know eachother, we shook hands, agreed on the restoration and completion details, and off he went 🙂

It can be daunting when you know you are responsible of someones precious, irreplaceable and expensive carburettors.
Thankfully, with some experience and confidence in your work, you go ahead and do the very best you can. Which thankfully, has been working rather well so far.

So, bottom line is: This was a challenging restoration for a demanding customer – Have a look at how we dealt with it from start to finish.

Here is a preview of before & after restoration:

 

 

Before restoration.

.. And after!

 

 

 

 

 

 

 

 

Stripdown:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

And off comes the first top cover/lid.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All parts removed from the carburettors are separated into containers, ready for their individual treatments.

 

 

 

 

 

 

 

We keep all items included perished gaskets & seals, until carburettor restoration has been completed. You might need these, for reference, so keep them until restoration end.

Pump rods, springs, auxiliary venturi clips etc.. ready for chemical blacking.

 

 

 

 

 

 

 

 

 

 

Brass. This lot will look a little brighter after cleaning and buffing.

Steel parts ready to go for degreasing and yellow zinc plating

 

 

 

 

 

 

 

Making progress. Spindles and throttle valves coming off next.

Basic tools for the job at hand. Nothing too exotic! A metal scribe, slotted screwdriver, a 10mm ratchet spanner with an open end and a 10mm socket wrench.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

That’s a satisfying view from a technician’s point of view 🙂

And now the spindles, which can be very tricky.
Thankfully, these came out smoothly with little effort.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Carburettor dismantling has been completed.
There were a couple of issues with one cold-start mechanism which had one of it’s stop-lugs snap off, and also 2of12 cold start plunger springs were the wrong length.

The cold-start mechanisms on these 38 DCOE operate from left to right as opposed to the more common right-to-left direction.

Due to this mechanism no longer being available from WEBER, we had to do some searching on the internet to find one. And we did.

The plunger springs were replaced with the correct ones.

So, next we vapour blasted the alloy bodies, top and bottom covers, chokes, venturis etc..

Here they are after vapour blasting.

 

Processing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The parts have returned from their treatment, and are now inspected and cleaned ready for re-assembly/rebuild.

The most dramatic change to the eye, is the vapour blasted aluminium bodies and cover. They really do come up beautifully!

After the vapour blasting though, it is imperative that the carburettor passages are cleared through with compressed air, warm soapy water and allowed to dry fully before they can be considered ready to be built and set-up.

 

Rebuild

 

 

 

 

 

 

New, steel shielded bearing in place.

Pushing the bearing in it’s bore.

 

 

 

 

 

 

New gaskets, o-ring seals, needle valves and washers ready for their new home.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

And some simple tools on the workbench to help with the job at hand.

Cold start assembly ready to snap back in place!

 

 

 

 

 

 

 

 

 

 

 

Form B, plain flat, brass washers for top and bottom cover screws and cold start retaining mechanism screws.

Fine brass mesh, back home.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A little encouragement, sometimes helps – Thanks darling 😉

That’s Italian coffee in there. I’m loyal to the brand i guess!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

New needle valve assembly in it’s case.

Float fulcrum, pivot pin.

 

 

 

 

 

 

Tapping the float pin back home. Gently.

 

 

 

 

 

 

Main Jet Assemblies.

Fully loaded view, jet cover off.

 

 

 

 

 

 

 

 

 

 

 

 

Rebuild Completed!!

 

 

 

 

 

 

 

 

 

 

We’ve still got to set the float heights and add some medium-strength thread locker on the original throttle valve screws (prevent them from coming loose and being ingested by the engine).

Hope you like this WEBER 38 DCOE 59-60 carburettor restoration diary.

Hopefully, our customer will be happy with them – And perhaps send us a video of them once installed on his Ferrari 365 GTC/4 V12 Engine.

Would be awesome to see and hear them do their thing!

If any of you are considering the restoration of similar carburettors for your motor, feel free to message/email/call me for any help or advise, or indeed discuss the possibility of me taking on the restoration of your automotive, historic jewels 🙂

High-quality service kits to restore these Italian DCOEcarburettors, can be found here:

WEBER 38/40/42/45 & 48 DCOE TWIN CARBS/CARBURETTOR SERVICE/GASKET KIT

 

 

 

 

 

 

 

 

Thanks for reading this far.
If you have any comments about how this work is presented and have any suggestions – Please feel free to write to me (email is fine).

Thank you,

 

Emmanuel Grigoriou
Classiccarbs.co.uk