6 replies to this topic

[Philtrum]

I've got a constant tone whooshing changes with rev, sounds like a fan thats not in the shroud (but I've sorted the fan)

its not there below 3k revs, when its about 4k revs it sounds like its running a straight cut gearbox !

I have a feeling that its the alternator, but any ideas are welcome

Cheers
Phil

[Madmax]

could be the carburettor sucking in air?

[Philtrum]

thanks, just checked the carb by spraying wd40 round it when the engine was running, there was no increase in revs, so thats ruled an air leak on the carb out

when I was looking at the carb, (metro A+ engine) there is the fuel in on the left hand side, next to it is another pipe, this goes to a y peice and two pipes come off, one goes down to the gearbox where it attaches to a canister and the other goes round to the water pump side and into another canister

it seems that the fan is catching on the canister ever so slightly, also with it being close to the fan its prob causing the air noise

question is..... what are the canisters ..... ?

Cheers
Phil

[Dan]

Engine breathers.

Obviously you have (or someone has) fitted the fan when fitting the engine as Metro's don't have their fans there. What hasn't been done (probably) is to fit a fan spacer behind the fan. Get one or two and it'll fix this. It'll help cooling too as the fan should be fairly close to the core.

[Philtrum]

The conversion was done before I bought the car, I've had a look and it does not look like its got a spacer on it

is the spacer something you can by cheaply, or can you pack the fan with washers (providing they are all the same width ?)

how far does the fan need to be inside the shroud ? (its just inside or level with the outer edge on at the moment

Cheers
Phil

[Dan]

Just use one thin spacer (there's thin and thick ones, the thin one's about 3mm) to move it further away from the engine, as long as it's not touching the rad it'll be fine (remember the blades will flex a little towards the engine when running so allow enough clearance).

The spacer is about a quid and you can get it from most Mini places. Using washers is a knightmare to keep them all aligned as you feed the bolts in, and the balance won't be great.

Part number 12A312.

[Philtrum]

Thanks Dan

I'll get purchasing

Cheers for your help
Phil