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The XUD and DW8 Engines

The XUD is the 1905cc indirect injection diesel engine as fitted to the 93-97 Ph1 & Ph2 diesel 306s, it comes in both turbo and non turbo variants. The non turbo XUD9A produced between 67-71hp depending on year. The turbo model makes 92hp as standard, but was derated to 90hp from 1997 onwards. It is a very popular engine across many older PSA cars and very popular to tune with its fully mechanical Bosch axial or Lucas rotary injection pumps. They are also renown for there reliability and being easy to fix / work on. The later models also featured a catalytic converter in the exhaust along with EGR for emissions. DW8 The DW8 is essentially a derivative of the older XUD9 design, an 1868cc engine it is considered a 1.9 litre, although may sometimes be shown as a 1.8 litre to distinguish from the XUD7 and XUD9. It is fitted to 1999> Ph3 Diesel 306s along with many other cars and light commercial vans, namely the Peugeot Partner and Citroen Berlingo. The name would suggest it is part of the DW line of engines that replaced the ageing XUD, although it has more in common with the XUD with it's mechanical rotary Delphi/Lucas pump which is near identical in operation to that of the XUD, it shares more in common with the XUD9 than the DW10/12 engine. The engine does have an "ECU" of sorts, although this computer is purely for it's complex EGR emmissions systems and anti-theft systems, however underneath all of this lurks a very familiar mechanical Indirect Injection engine which is incredibly reliable due to it being based upon 25 years of design and refinement and being reasonably low stress. The engine is rated at 69-72hp, again dependent on year.

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Normal Threads
		Engine advice Willo, 27-10-2012, 11:46 PM	17	3,101	0 Vote(s) - 0 out of 5 in Average	28-10-2012, 10:09 PM Last Post: Willo
		406 XUD questions ginge191, 30-11-2012, 02:45 PM	17	3,924	0 Vote(s) - 0 out of 5 in Average	03-12-2012, 09:50 PM Last Post: Piggy
		Running veg.. now wont start Adam.M.Penny, 24-01-2013, 08:07 PM	17	4,308	0 Vote(s) - 0 out of 5 in Average	30-01-2013, 08:16 PM Last Post: Adam.M.Penny
		Phase 1 D Turbo.... No Power/Turbo? Ash J, 26-01-2013, 09:18 PM	17	6,227	0 Vote(s) - 0 out of 5 in Average	03-02-2013, 09:25 PM Last Post: Pepper
		Anyone know much about these turbos? JoshDturbo, 31-01-2013, 01:06 PM	17	4,161	0 Vote(s) - 0 out of 5 in Average	01-02-2013, 02:36 PM Last Post: ginge191
		Blue smoke on starts (help) phillf, 02-02-2013, 10:36 AM	17	6,480	0 Vote(s) - 0 out of 5 in Average	05-02-2013, 08:09 PM Last Post: CJ_Derv
		K14 19psi, and bored! RePT, 19-02-2013, 06:01 PM	17	4,320	0 Vote(s) - 0 out of 5 in Average	19-02-2013, 09:44 PM Last Post: kernow_joe
		Flexible sealant, exhaust Ricky, 09-03-2013, 08:48 PM	17	6,032	0 Vote(s) - 0 out of 5 in Average	10-03-2013, 06:44 PM Last Post: CJ_Derv
		Making a custom exhaust silverzx, 13-03-2013, 06:44 PM	17	3,723	0 Vote(s) - 0 out of 5 in Average	17-03-2013, 11:13 PM Last Post: RJDubya
		Waste veg oil filtering Chris_90, 15-03-2013, 09:21 AM	17	6,753	0 Vote(s) - 0 out of 5 in Average	16-03-2013, 09:48 AM Last Post: Chris_90
		boost leak? DarkInferno, 21-03-2013, 09:30 PM	17	3,901	0 Vote(s) - 0 out of 5 in Average	02-04-2013, 04:49 PM Last Post: Arron
		K seal.....test Piggy, 28-03-2013, 06:19 PM	17	5,437	0 Vote(s) - 0 out of 5 in Average	14-05-2013, 04:31 PM Last Post: Piggy
		stutter problem at high revs holding back sparkyboi001, 12-04-2013, 09:40 AM	17	5,060	0 Vote(s) - 0 out of 5 in Average	16-04-2013, 02:55 PM Last Post: Tom
		Whistling Noise DanWY, 12-04-2013, 07:51 PM	17	3,348	0 Vote(s) - 0 out of 5 in Average	23-01-2014, 07:14 AM Last Post: Lwilliams
		put a turbo on moonstoneblue, 16-04-2013, 04:08 PM	17	4,483	0 Vote(s) - 0 out of 5 in Average	06-05-2013, 08:21 PM Last Post: moonstoneblue
		Ph1 xud in to ph3 hdi shell Chris_90, 29-04-2013, 07:24 AM	17	7,124	0 Vote(s) - 0 out of 5 in Average	29-04-2013, 11:15 AM Last Post: Chris_90
		What is this? i have pictures 306__xrdt, 05-05-2013, 04:19 PM	17	4,388	0 Vote(s) - 0 out of 5 in Average	07-05-2013, 06:49 PM Last Post: Toms306
		What Engine do I have??? Scott_GT, 10-05-2013, 07:07 PM	17	3,284	0 Vote(s) - 0 out of 5 in Average	11-05-2013, 07:44 PM Last Post: Scott_GT
		Weird startup problem :/ Mike, 25-05-2013, 10:47 AM	17	3,844	0 Vote(s) - 0 out of 5 in Average	28-10-2013, 07:35 PM Last Post: mattgreene
		Dipstick Location Aaron35, 13-06-2013, 04:37 PM	17	5,779	0 Vote(s) - 0 out of 5 in Average	14-06-2013, 09:39 PM Last Post: Tom
		XUD Cat / Lambda adamm306, 01-08-2013, 04:31 PM	17	3,086	0 Vote(s) - 0 out of 5 in Average	04-08-2013, 04:09 PM Last Post: adamm306
		Running hot. Tom, 12-08-2013, 01:40 PM	17	3,387	0 Vote(s) - 0 out of 5 in Average	15-08-2013, 07:19 AM Last Post: Piggy
		Help trouble with the tune :( underground375, 22-08-2013, 12:32 PM	17	3,077	0 Vote(s) - 0 out of 5 in Average	22-08-2013, 10:32 PM Last Post: londondan86
		Ideal XUD exhaust size? silverzx, 09-10-2013, 01:56 PM	17	3,736	0 Vote(s) - 0 out of 5 in Average	10-10-2013, 11:19 AM Last Post: silverzx
		Won't rev amongst other things Danny2009, 19-10-2013, 04:29 PM	17	2,044	0 Vote(s) - 0 out of 5 in Average	20-10-2013, 01:10 AM Last Post: Mattcheese31
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