Jump to content
IGNORED

Old School 'Gaggia Coffee' to 'Gaggia Coffee Classic' Conversion


Recommended Posts

Saw this on eBay a couple of weeks back and duly purchased it:

 

$(KGrHqYOKiYE6MvLd2FEBOo+14wzqg~~60_3.JPG

 

Received it this week and it's mint! May 1995 vintage. It's lovely, being the same chassis of a classic it'll be rude not to convert it to full Gaggia Classic internals just for the hell of it really.

 

Got this machine as a donor:-

 

DSC_0043.jpg

 

Bit bruised but internally sound.

 

This is machine unpacked etc:

 

DSC_0044.jpg

 

Started stripping it this morning, didn't take long. Decided to give it a bath to clean it up too.

Edited by MartinB
18/11/11 Now Complete!
Link to post
Share on other sites

DSC_0045.jpg

 

DSC_0046.jpg

 

DSC_0040.jpg

 

DSC_0041.jpg

 

 

That's where i'm up to currently. Well I dismantled the donor classic and realised two of the boiler/group head bolts are stuck in and looks like a previous owner or repairer has buggered them up royally! Will take it over to my brothers' next weekend and we'll see if we can remove them.

 

Other than that it should be a straight swap. One thing that is needed is a hole drilling in the chassis for the decompression pipe fitting to bolt into, again, this is straightforward and will be done next weekend all being well.

 

I have new boiler and grouphead seals to fit when the classic internals get bolted in. Will update in due course!

Link to post
Share on other sites

Looking closely at the inside of the case, I can tell its definitely mild steel.. I'll look into helicoils today and see what we may need after removing boiler bolts! Just made a fabulous cup using the two day roasters espresso blend, pump really had to work to squeeze the goodness from beans after grinding ;) project looking good there, machine really does look better in the flesh :)

Link to post
Share on other sites
Looking closely at the inside of the case, I can tell its definitely mild steel.. I'll look into helicoils today and see what we may need after removing boiler bolts! Just made a fabulous cup using the two day roasters espresso blend, pump really had to work to squeeze the goodness from beans after grinding ;) project looking good there, machine really does look better in the flesh :)

 

Cheers bro, finding those boiler bolts to be wrecked has annoyed me as it should be a straight swap! We could drill them out and use nut,bolt & washer to seal boiler in place of allen bolt? You're the expert with this kind of thing!

 

Looks like a clean body in such good nick for its age

 

What a great thread. Thanks for posting the photos!

 

Cheers Glenn! I'm hoping to have it working in the next week/10 days. Will post on my progress.

Link to post
Share on other sites

In Oxford at my Parents' this weekend, popped into the garage and got some tools to attack the two knackered boiler bolts.

 

I smashed an M6 spline socket into each bolt and the heads snapped clean off when I went to undo them. Managed to prise the boiler apart and there was enough thread remaining on the bolts to remove them fully. Result!

 

I was met with this disgrace!

 

DSCF1219.jpg

 

DSCF1220.jpg

 

Soaked in puly caffe for a couple of hours and it's a lot better now.

 

Decided to replace some bolts with newer black items as I have a big box of assorted nuts and bolts:

 

DSCF1221.jpg

 

DSCF1222.jpg

Edited by MartinB
Link to post
Share on other sites

Popped the group head into the chassis to get a feel for it and to start building the machine back up:

 

DSCF1237.jpg

 

This afternoon i'm popping over to my brothers where we will drill the hole in the chassis for the decompression pipe.

Link to post
Share on other sites

Mark, the boiler didn't scrub up too bad to be honest. I will be descaling the machine before I start to use it. If i come across a decent boiler I will pop it in but for the meantime i'll see how it goes.

 

Success, the machine is now working!

 

Many thanks to Mark (gaggiamanualservice.com) who helped me out a treat with the wiring. Turns out that one of the wires in the classic has been replaced with one of not the same colour so it was a bit of a headache at first! Tripped the fusebox many times.

 

Fully working now. Looking back it was a straightforward swap really, all that was needed was to get a hole drilled for the decompression pipe to fit to as per the Classic chassis. Also, i've learnt a lot about the intricacies of these machines.

 

When first powered up:

 

DSC_0033.jpg

 

New bolts fitted:

 

DSC_0039-1.jpg

 

All shut with new group head seal:

 

DSC_0040-1.jpg

 

^^ Decompression pipe just needs a fettle, it does fit straight, honest!

 

DSC_0041-1.jpg

 

 

I'd love to tuck this machine away for when I get a new pad, i'd also like to make it my everyday machine so I may well be fitting the Silvia steam arm and bottomless portafilter across from my current Classic.

Link to post
Share on other sites
  • 2 months later...
  • 6 months later...
  • 2 years later...

3 years on and the machine is still in daily use and going strong :) replaced the boiler about 2.5 years ago, fitted a PID & broke the PID (water-related issue!)and set the OPV to 9 bar too.

Link to post
Share on other sites

Do it, there are enough faulty Classics around that just need a simple fix and can be bought for a good price. The switch banks are visually different but still have 3 buttons that carry out the same functions as the classic = not such a big headache to connect up!

Link to post
Share on other sites
  • 1 year later...

Trying to bring back this thread.

 

Martin I also have an older Gaggia Classic model and want to add the decompression pipe. I was wondering what work needs to be done. It needs to be connected to the boiler? Need to add any hoses? A picture will be appreciated.

 

Thanks,

 

Edwin

 

Mark, the boiler didn't scrub up too bad to be honest. I will be descaling the machine before I start to use it. If i come across a decent boiler I will pop it in but for the meantime i'll see how it goes.

 

Success, the machine is now working!

 

Many thanks to Mark (gaggiamanualservice.com) who helped me out a treat with the wiring. Turns out that one of the wires in the classic has been replaced with one of not the same colour so it was a bit of a headache at first! Tripped the fusebox many times.

 

Fully working now. Looking back it was a straightforward swap really, all that was needed was to get a hole drilled for the decompression pipe to fit to as per the Classic chassis. Also, i've learnt a lot about the intricacies of these machines.

 

When first powered up:

 

DSC_0033.jpg

 

New bolts fitted:

 

DSC_0039-1.jpg

 

All shut with new group head seal:

 

DSC_0040-1.jpg

 

^^ Decompression pipe just needs a fettle, it does fit straight, honest!

 

DSC_0041-1.jpg

 

 

I'd love to tuck this machine away for when I get a new pad, i'd also like to make it my everyday machine so I may well be fitting the Silvia steam arm and bottomless portafilter across from my current Classic.

Link to post
Share on other sites
Trying to bring back this thread.

 

Martin I also have an older Gaggia Classic model and want to add the decompression pipe...

 

You can't just add the decompression pipe unless you also have a solenoid valve internally to fit it to. Post a pic of the inside of your machine, let's see what's in there...

Link to post
Share on other sites
  • 3 years later...

It's still alive! 

 

Looks like I've lost a lot of pictures to photobucket sadly but took a new picture this evening after fitting another PID - attempted to control both steam and brew this time round, but couldn't decipher how to get the steam wired up as well ?

 

Anyway, set the brew to 102c and poured a lovely Yirgacheffe double shot as an early evening aperitif :)

 

 

 

IMG_20191110_195958.jpg

Edited by MartinB
  • Like 1
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • About
    Coffee Forums UK is the UK's premier coffee forum Started in June 2008 by Glenn Watson, we now have more than 24000 mainly UK based members, and welcome more than 3000 members and visitors from around the world each day! With strategic investment and digital expertise from the Jackson Lockhart team (Tait Pollack and Adam Bateman), we are taking Coffee Forums UK to the next level, and are delighted to share the journey with you.

    New Members:
    We are often referred to as the friendliest forum on the web and we look forward to welcoming you onboard. Please read our Terms of Use. We stick by them, existing members please familiarise yourselves with them.


    Advertising

    Coffee Forums Media Kit

    Click Here To Buy Advertising Space 
    £100 p/m when paid yearly, up-to: 690000 banner impressions per month!


    Donate / Sponsor

    Get Your Supporter Badge Today (per year)

    image.png



    Coffee Forums Logo
     

×
×
  • Create New...