Mi16 engine on carbs

[sniff petrol]

I currently run my 205 1.9 GTi track car on twin 40mm Delorttos which I'm very happy with the way the perform. I've now sourced myself a '89 BX GTi to donate it's engine which I want to strip down and rebuild before putting it in the Peugeot at the end of next season.

The BX is currently left on my front lawn as I don't have any more driveway space for it but I have a chap interested in stripping off any parts I may have left over before having the shell collected for scrap. What I need to know is what other parts I will need to keep off the Bx before it goes, especially will I need to keep any part of the loom or the ECU? I don't currently run with an ECU on the 8v engine, but on the 16v engine the advance/retard is not controlled by the distributor but by the ECU, will the modified distributor kit be good enough to run this or will I need an ECU as well?

[Mikey G]

Seen plenty of Mi engines running an adapter and 8v dizzy so i would say you should be ok. Ideally you need some sort of ignition ECU to get a proper mapped advance curve though.

I would consider stepping up to 45's on the carb front aswell.

[sniff petrol]

Mikey, is the standard BX GTi ecu mappable or will I need an aftermarket one then? Wouldn't the 40's be OK with some bigger jets?

[Mikey G]

It is mappable but you need a specialist to rewrite the EPROM.

You could rejet the 40's but the extra air the Mi sucks with the extra 1krpm it pulls would strangle it really.

[sniff petrol]

Mikey G said:

It is mappable but you need a specialist to rewrite the EPROM.

You could rejet the 40's but the extra air the Mi sucks with the extra 1krpm it pulls would strangle it really.

Okey dokey, will look out for a pair of 45's then. Suppose if I stick to Dellorto's then I can keep the same mainfold. I was thinking of going for carbs as I thought it would be a simpler way to install the engine and for a bit more power. It's looking like it would be simpler to just keep to stock injection, but then that would mean shortening the mainfold...

[Mikey G]

40's to 45's use the same manifolds anyway, its only the choke sizes that differ's in them.
If you use the standard ECU for ignition i'm not sure on the throttle position switch, it may need fitting to the dellortos for the ignition to work properly.