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Matt110

Member Since: 29 Jun 2014
Location: UK
Posts: 673

Replacement webasto dosing pump

I bought a thermotop C second hand from eBay earlier in the year as a full kit, was originally a Rover 75 unit I think. Works ok, I'm stripping and rebuilding before fitting. But the dosing pump is a tad beaten up and has been sprayed black in a bit of a heath Robinson fashion before my ownership...

Anyone replaced theirs with one of these generic ones from eBay and similar?

https://www.ebay.co.uk/itm/313053072965

Same external shape and size, appears same voltage, not sure on the dosing rate.

Webasto spare officially seems to be £300.

That's 3 X more than I paid for my entire setup lol.

Trouble is.... I'd rather not set fire to my vehicle. Mind you the whole things second hand and being rebuilt with new gaskets etc, rather than brand new. Must stop attempting to buy champagne with beer money!

5th Oct 2020 5:50pm

derbywill

Member Since: 25 Mar 2010
Location: Derbyshire
Posts: 539

Make sure the dosing is the same as the pump is specced to the unit, if the dosing is too great you will have plumes of white unburnt diesel in the air.

Cheers

Will 2005 90 XS
1954 86'' Series 1 tilt

6th Oct 2020 12:27pm

Matt110

Member Since: 29 Jun 2014
Location: UK
Posts: 673

Thanks, good thought, i'm fairly convinced the rather knackered old unit that came with my heater is also a Chinese copy dosing pump, and they all appear the same, but your point still stands - i'll pull the webasto tech brochure and check the dosing rate.

It was as much the quality of the Chinese units and whether anyone had had any issues really.

6th Oct 2020 1:06pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7687

2011 Defender 110 Puma 2.4 USW Stornoway Grey

As above, any pump that delivers the right flow of fuel against time will do it Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

6th Oct 2020 8:21pm

Matt110

Member Since: 29 Jun 2014
Location: UK
Posts: 673

Thanks guys.

I can't pay £300 for a webasto one...

I'm after any experiences anyone has with Chinese copy parts.

Flow rate aside.

Or a way to renew it without spending that outlay. I don't trust the one I've got... But also have no experience of the Chinese copy parts from amazon\ebay.

I mean..... Look at the thing lol

It's actually got 2 dents in it. Curiously it works just fine! But over time? Don't trust it.

Click image to enlarge

6th Oct 2020 8:30pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

If your heater from rover 75 user fuel dosing pump from rover JEX1000090 £78.00

6th Oct 2020 9:03pm

Matt110

Member Since: 29 Jun 2014
Location: UK
Posts: 673

Now that's a good plan.......!

Is JEX a rover part number in that case as it's got a JEX number on the side of it.

I guess that cements the idea it's a 75 unit.

6th Oct 2020 9:14pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

https://www.ukmgparts.com/product/zt-zt/pu...-jex100090

6th Oct 2020 9:16pm

Matt110

Member Since: 29 Jun 2014
Location: UK
Posts: 673

Thanks

If you look at that new part it's even the same shape as the one I've got, and doesn't match either the OEM ones from webasto or the Chinese copies.

6th Oct 2020 9:23pm

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