MD2030 Heat exchanger Neck

[Cariadco]

Anyone know of where I could get a replacement Neck unit for my Heat Exchanger?
(What the cap screws onto)
Parts4engines only have the one for a MD2040 and they believe it's the wrong size.
Thanks.

 

[john_morris_uk]

I’m familiar with the 20xx series but I don’t understand what you mean by ‘the neck unit’? Can you give a part number of a photograph of the part you’re trying to source?

 

[coopec]

Did you see this?

Volvo MD 2030 heat exchanger filler cap insert - YBW Forum
YBW
https://forums.ybw.com › volvo-md-2030-heat-excha...
12 Jan 2020 — Heat Exchanger Filler Neck, Bowman 3921-1. I've no idea if any of the above fits the MD2030 HE but maybe worth investigating
Volvo Penta 2030C Heat Exchanger | YBW Forum 22 Mar 2015
VOLVO MD 2020 - OVERHEATING - YBW Forum 29 Dec 2008
More results from forums.ybw.com

Expansion tank neck heat exchanger connection 30mm

 

[Cariadco]

Did you see this?

Volvo MD 2030 heat exchanger filler cap insert - YBW Forum
YBW
https://forums.ybw.com › volvo-md-2030-heat-excha...
12 Jan 2020 — Heat Exchanger Filler Neck, Bowman 3921-1. I've no idea if any of the above fits the MD2030 HE but maybe worth investigating
Volvo Penta 2030C Heat Exchanger | YBW Forum 22 Mar 2015
VOLVO MD 2020 - OVERHEATING - YBW Forum 29 Dec 2008
More results from forums.ybw.com

Expansion tank neck heat exchanger connection 30mm

Many thanks and I'm working through the links.

 

[Cariadco]

I’m familiar with the 20xx series but I don’t understand what you mean by ‘the neck unit’? Can you give a part number of a photograph of the part you’re trying to source?

It's the Brass 'Neck' that's on top of the exchanger, what you screw the filler cap onto.

 

[Cariadco]

Many thanks and I'm working through the links.

Also, I havent removed the damaged Neck, so I'm unsure as to it's exact size. I assume the sizes they quote is the diameter of that part that's pressed into the exchanger's body.

 

[john_morris_uk]

Thanks for the explanation. I’m finding it hard to believe that they’re different sizes.

 

[john_morris_uk]

A calliper across the neck close to the heat exchanger body will tell you the size.

 

[Martin_J]

It used to be easy to find a bolt on version in the UK. Something like the photo below I used to consider should the neck ever break away on my MD2040...

 

[john_morris_uk]

It used to be easy to find a bolt on version in the UK. Something like the photo below I used to consider should the neck ever break away on my MD2040...

View attachment 153236

Great solution. Drill and tap thd heat exchanger casting and make a gasket. Easy peasy.

 

[Beneteau381]

Anyone know of where I could get a replacement Neck unit for my Heat Exchanger?
(What the cap screws onto)
Parts4engines only have the one for a MD2040 and they believe it's the wrong size.
Thanks.

My spanish mate had an issue, the brass neck reacts with the aluminium housing and it comes loose. He took th e HEto a rad repairer in Faro. Modern cars have alu and plastic rads. It is possible to buy rad necks and cap with an ally tube. He carefully removed the brass bit, cleaned the HE hole up, procured a square piece of ally, cut a hole and they welded the neck to it then they welded that over the HE hole. Was one of the neatest repairs I have seen, all done in a morning at the rad shop

 

[Martin_J]

The UK Thermex one is still shown on a UK website but their online store just doesn't seem to work...

 

[Martin_J]

The link below looks like a previous thread where I mentioned the Thermex one and someone did buy one, fitted it to an MD2040 and they reported back...

VP 2040 c2001 filler cap neck atop heat exchanger on the move!

 

[Cariadco]

Thank you all for the advice and suggestions.
Here's what i'm going to be trying:
1-I could buy the kit from parts4engine, and although they don't believe the neck from the 2040 will fit my HE, I'll give it a go.
Here's the link to their kit: Volvo Penta MD2040 heat exchanger repair kit
2-I'm sourcing a radiator repair company, here in Corfu to see what they can do.
3-As a final resort, I'll give the neck that has the 2 holes, to connect to the HE, a go.

I'm keen to repair this HE (to keep as a spare) as their second hand prices are astronomical, but, a new bare unit is 1500 euros out here.

 

[Beneteau381]

Anyone know of where I could get a replacement Neck unit for my Heat Exchanger?
(What the cap screws onto)
Parts4engines only have the one for a MD2040 and they believe it's the wrong size.
Thanks.

Be aware that the MD2030 HE is an aluminium casting.