How do i tell difference between 90 and 110 hdi?

306blondie · Post by **306blondie** » Fri Mar 30, 2007 1:11 am

What are the differences between a 90 and 110 406? is one better than the other or is just bhp? how do i know if a 406 is 90 or 110?

GeordieBoy · Post by **GeordieBoy** » Fri Mar 30, 2007 1:20 am

The 110 is by far the better choice, it does more MPG and is quicker.

Main difference is, the 110 has an Intercooler, the 90 does not.
They is other differences but that is the main 1 which you can tell straightaway.

Post by **Welly** » Fri Mar 30, 2007 8:56 am

The most obvious difference is the large intercooler hose running on top of the engine to the right like this...............

Obviously the 110 has more power but it also has a Dual Mass Flywheel (which is prone to give trouble costing £700.00) also the 110 has rear disc brakes which again can give trouble when they begin to sieze and the handbrake is really crap, again can cost around £200.00 ish.

Many feel that the 90 is a simpler beast and more reliable as a result. If I had my time again I would consider a 90BHP model and have it chipped to around 110/120 BHP. Actually if I had my time again I would DEFINATELY buy a loved D8 2.1 td and chip it, that IS a fantastic engine and no mistake.

turbolag · Post by **turbolag** » Fri Mar 30, 2007 6:14 pm

The most reliable way is to look on the V5, as many a '90 has since sprouted an intercooler, and a few late run '90s seem to have had rear discs too.

90 is the better buy reliability wise, by a fair margin, and there isn't a lot to tell performance wise 'twixt the two.

jameslxdt · Post by **jameslxdt** » Fri Mar 30, 2007 8:57 pm

the simplest way to tell is to drive it, the 110 accelerates, the 90 doesnt

turbolag · Post by **turbolag** » Fri Mar 30, 2007 9:20 pm

I drove 5 when looking for mine, and only 1 of the 3 x 110s was clearly distinguishable from the 2 90's in the right foot department. The only test mileage I was unable to do was motorway, but on all other roads the 2 offenders felt no different at all.

BTW - I had nowt against the 110 but ended up with the 90 purely on the grounds of its one-coffin-dodger-owner-never-driven-in-the-wet-kept-in-a-heated-garage condition. I knew I was onto a winner when the V5 revealed his first name had been 'Cyril'. bless 'im. Therefore, although the sprightly 110 was in the running it was not worth nearly 2 grand more at 40k miles than the sub 9000 mile '90 for the sake of slightly better grunt. If i'd been that way inclined, that 2 grand would've bought a lotta sexy stuff at the DervDoctor.

Pug quote virtually the same economy figures between the 2 flavours, with the '90 being about 0.5 to 1 mpg better, though in reality 90 owners report regular mileages into the low 50's, which even the direly unreliable Siemens units in the 306/307 90's can't duplicate. The 406 '90 holds the world production car endurance record for public road driving, with 1900km at 79 point a bit from a tank, though i'm sure a 110 wouldn't be far behind. Curiously, the 407 HDi with the 6 speed auto holds the automatic version of the same record, but still only manages to get within 10 mpg of the '90.

Either one will deliver Smart Car destroying economy, with 5 comfy adult acommodating seats, a mahoosive boot and a tidy chassis, and decent safety (some of the last of the line D9s had side airbags too), all for less than the deposit on a half decent new car.

jameslxdt · Post by **jameslxdt** » Fri Mar 30, 2007 9:28 pm

turbolag wrote: Pug quote virtually the same economy figures between the 2 flavours, with the '90 being about 0.5 to 1 mpg better, though in reality 90 owners report regular mileages into the low 50's, which even the direly unreliable Siemens units in the 306/307 90's can't duplicate.

i have to disagree, i quote from the owners manual for a D9:

HDi 90 RHY urban - 38.2 mpg
inter-urban - 60.1 mpg
mixed driving - 50.4 mpg

HDi 110 RHZ urban - 38.7 mpg
inter-urban - 62.8 mpg
mixed driving - 51.4 mpg

do you speak from personal experience about the siemens '90?
its far more advanced and reliable than the bosch '90, the only thing is the siemens HP is not as strong as the bosch one

turbolag · Post by **turbolag** » Fri Mar 30, 2007 9:51 pm

Yup, had an HDi Dturbo, having previoiusly had (and been impressed with) an XUD Dturbo as a company car, but found splaying my legs sideways was doing my rotten knee no good, so sold it to a friend of my sisters about 3 months into ownership. To this day I still maintain it for her. And lucky I did too, as the litany of electrical failures would've paid for my Mi16, and then some.

Despite the weight advantage, I never managed beyond 47mpg. The 406 HDi murders it (poss due to sweeter gearing and big car aerodynamics) and even my ancient 405 GRDt could just nip beyond that, way back in the arly 1990s, so to only get that from a smallish 3 door hatch with the same general engine architecture was disappointing. But, lo! I was not alone, and it is indeed accepted in pSOOC and Dturbo register circles, that the Spunkie is not as economical by its more recent brethren with Bosch.

On paper, it is a superior and simpler set up, but in practice it is not well executed, and for those of a performance oriented ilk suffers the additional indignity of an ECU that can't be properly remapped. whilsts the Bosch variants of the HDi all get their share of forum space on the PSOOC, it the Spunkie ones that really get peoples wrath, and could be why pug never developed it beyond '90' spec, choosing instead to re-invest in Bosch from the 307 forward. other than in terms of emissions, it was a retrograde step over the XUD it replaced, being heavier, slower and no more economical. Shame. The HDi in the 406 and all its forms is a much better proposition in every area that matters (including the fact that they're in a 406 - one of the best all round cars of the modern era).