Peugeot 2 litre 16 valve DOHC, SODEMO management

[WLAcopilote]

Hello,
anybody out there with experience of modifying the Peugeot 2 litre 16 valve DOHC engine?

The one fitted in my new car has been quite seriously modified by a French rally car builder. Apparently it has lightened and balanced (forged?) pistons, lightened and balanced connecting rods but a standard crankshaft (for reliability).

Apparently it makes 230 bhp at 7100 rpm!

It runs SODEMO engine management which uses MAP and BAP sensors as opposed to mass airflow but no Lambda sensor - open loop control I would guess. The fuel injection is by guillotine-type throttle bodies.

I have a copy of the software for mapping the ECU and a spare ECU

What do I need to watch out for with this engine?
Can anyone recommend a UK supplier for components when rebuilding the engine?

Having not been able to drive the car yet (waiting for ECU's to be shipped) what does the SODEMO ECU do when the engine approaches it's rpm limit - is it a sequential cut off of injectors or a "brick wall" type limit?

many thanks,
WLAcopliote

[deltaf]

Hi. Have a look here, this may help you out some.

www.sodemo.com
www.sodemo.com/uk/05-contact/contact00.htm

HTH

[WLAcopilote]

Thanks for the links; I'd already been there...I am more specifically interested in the mechanical aspect of the engine e.g. known weak points for high-power, high rpm running...

[Matt_T16]

WLAcopilote said:

Thanks for the links; I'd already been there...I am more specifically interested in the mechanical aspect of the engine e.g. known weak points for high-power, high rpm running...

Well how old is it, 2litre 16V doesn't really tell us much. Could be a 2 litre half steel Mi16 lump, could be a later GTI-6 lump etc. etc.

I've tinkered a bit with the D6C/Mi16 so might be able to tell you some useful bits.

Matt

[WLAcopilote]

The engine appears to be an all-alloy unit, where do I need to look to find an engine number so I can find out it's age and origin? I think it is from a 405 car.

[w00dy]

If it is in fact all alloy, and from a 405, then it'll be the 1900 Mi 16 engine. I'm not too sure of the strengths and weakneses of these engines compared to the gti-6 unit though, the bottom end is stronger and it dosen't have the same appetite for cam belts. Also, the Mi16 sump has virtually no baffles, this is a known cause of failure when the engine is used for motorsports purposes.

[WLAcopilote]

Thanks w00dy,
the engine hasn't been dry-sumped but the sump may have been modified (the car was built by a chap who used to build ice racing Nissan Micras for seven years). He did say that it used about 1 litre of oil every rally (about 300km split 1/3 stage 2/3 liaision). The oil recommended is 10w60 synthetic. How do I identify what block it is / where is the serial number stamped?

[deltaf]

If its anything like the rest of the Pug range, then itll be on an alloy plate riveted to the block in the vicinity of the starter motor. HTH.

[Munter]

This guy appears to do quite a lot with modified Peugeot engines.

www.pumaracing.co.uk/pug16v.htm

He did some work on a head for me. Seems to know his stuff.....

>> Edited by Munter on Friday 6th August 11:54