converting to turbo

martyb2 · Post by **martyb2** » 20 Jul 2005, 00:05

I have a 1993 405 diesel which i would like to convert to turbo. However the stub for the main oil feed pipe to the turbo isn't on my engine, any ideas how to overcome this? I have the turbo from a 306 and all the air pipes from a 405td. Any help is greatly appreciated

martyb2 · Post by **martyb2** » 20 Jul 2005, 01:09

the blank plug that lives near the tdc sensor is there. Would there be enough pressure from there to run a turbo?

Kowalski · Post by **Kowalski** » 20 Jul 2005, 01:21

Peugeot had some problems with a batch of 1.9 TD engines being fitted with the non-turbo connecting rods. The effect was that the engines snapped connecting rods after say 30k miles and disintegrated spectacularly. The 1.9TD has a load of components different from the non-turbo, crank shaft, connecting rods, pistons, oil spray on the underside of the pistons, different head, lower compression ratio, valves have to be made from a harder material so they don't get burnt etc etc. There are loads and loads of differences and you'd have to make all of the changes if you wanted your engine to last a decent amount of time.
Your best bet would be to find a TD 405 and buy it. Failing that, second best option would be to find a TD engine and drop it straight into your 405.

martyb2 · Post by **martyb2** » 20 Jul 2005, 01:26

Bummer, seemed like a good idea.
148,000 miles no smoke, and starts as if it was new!!

PowerLee · Post by **PowerLee** » 20 Jul 2005, 01:32

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Kowalski</i>

Peugeot had some problems with a batch of 1.9 TD engines being fitted with the non-turbo connecting rods. The effect was that the engines snapped connecting rods after say 30k miles and disintegrated spectacularly.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
Not the 306 April 1997 to april 1998 DHY engine problem again?

martyb2 · Post by **martyb2** » 20 Jul 2005, 01:35

had one of them in a 306 and yup it blew half the engine apart.
the 405 has the d9b engine in it though. What would happen if i put the turbo on that engine?

Kowalski · Post by **Kowalski** » 20 Jul 2005, 17:40

I suspect it would "blow half the engine apart" after a while (the D9B is an XUD9 variant) after all the D9B has non-turbo connecting rods. There are other bits that wouldn't last so well too, it would be a case of waiting for something big and expensive to break.
I don't know whether this is the full family listing for the XUD9, but there are a few variants of it.
XUD9A D9B/DJY 1905 51/70 3 Diesel
XUD9SD DHW 1905 55/75 3 Diesel turbo
XUD9BTF DHX 1905 66/90 3 Diesel turbo
XUD9TE DHY 1905 66/90 3 Diesel turbo
XUD9TF D8B 1905 67/92 3 Diesel turbo
Have you got an insurance quote for the conversion yet? If the risk of your engine blowing up doesn't kill the project, the insurance quote will.

fastandfurryous · Post by **fastandfurryous** » 21 Jul 2005, 01:44

The differences between any "turbo" version of a diesel engine, and it's N/A variant are at best loads, and probably massive. In the case of the CX, the engine casting was actually different, in that there was an additional 2mm thickness of metal cast around the cylinders. There's no way you could change that by modification. I believe the differences between the XUD and XUDT are similar, in that the cylinder block is a different casting. Dimensionally similar, but radically different engines.
just "slapping a turbo on" is guaranteed to cause a big mess. Mr conrod will soon say hello to the outside world, in a loud and expensive way.
And anyway, what's wrong with the 405 1.9D? they're good cars. Mine lasted until the odometer said 325'000 miles. at that point the rest of the car fell off. I still have the engine!
on the DHY/DHX issue, I've heard rumblings that there may have been a similar problem with XUD9T DHY engines fitted to citroen ZX's too. Anyone else heard this?