Citroen C5 V6 and supercharging

[Harlequin_uk]

Heya all, am considering adding a small ish supercharger to my Citroen C5 V6 (petrol) ES9A engine. The concept was for an AMR500 or M45, in the position of the aircon pump. With a remap was lookinging at about 280 bhp

So, thoughts on feasability ?

[Krikkit]

Sounds very do-able with some bracket work, do you have the packaging space for short hard pipes and an intercooler?

[ingenieur]

You've been registered 6 years and this is your first post? Mad..

Anyway, the main issue with any engine modification these days is being able to reprogram the ECU to provide enough fuel and to retard the ignition to make it happy to take the boost.

But I would try in the first instance setting up an independent lambda monitoring circuit with logging to enable you to see the air/fuel ratio. And a knock detection system so you can see if you're getting any detonation.

If the car is old and you don't care what happens to it the alternative is to fit the supercharger and go for a blast and see if it remains in one piece. Chances are the fuel system will be able to over-fuel to some extent and the ignition timing should be capable of advancing or retarding based on measurements so maybe it'll work fine... but if you're not willing to take the risk then you require monitoring to be able to observe whether or not you're potentially damaging your engine.

Any engine can cope with some boost... so if you're not planning anything too raucous then pistons, con-rods and crankshaft should all be fine.

You should make sure your crankcase ventilation system has a one-way valve installed if the system connects to your intake manifold as failure to do this can result in the crankcase becoming pressurised from the supercharger which can lead to lubrication failure... and that will end things quickly so it's quite important to check that.

[The test driver]

You'll probably want an M65 over the M45 for a V6

[Harlequin_uk]

Thank you all.

I am looking at the AMr500 or M45 for size ; the space isnt very large!

[mk2 24v]

The M45 will be making more hot air than boost on a PSA V6 engine.
Much better to go up at least a size to the M62, or even the M90 Eaton units.

If space is that much of an issue, possibly look at the centrifugal supercharger setups

[aka_kerrly]

The test driver said:

You'll probably definitely want an M65 over the M45 for a V6

a M45 is designed for 1-2L engines.

there are Peugeot 406 v6s with Eaton M62s and Rotrex superchargers fitted to them, the Rotrex is considerably smaller and better packaged than the screw type Eatons

[Harlequin_uk]

Thank you. The idea isnt for `big power`, as said above a small boost and keep stock internals (whilst running the carlsson map for fueling) so would really be at best 60 or 70 bhp. As for space,




top of engine

and 2 from underneath (for showing space)



thats aircon pump ofc