13 replies to this topic

[ffb]

Ive just bought a stage 1 kit for a 998 mini city but i have no idea what hoses are supposed to run to/from the alloy inlet Could you possibly point me in the right direction

[Guess-Works.com]

Unless you have a brake servo which will need connecting into the threaded hole on the top of the manifold, nothing is connected to the manifold..

see picture...

[Oldskoolbaby]

Unless you live in the antartic dont connect it up. Im pondering on whether to use an oil cooler and a small pump to pump cold water through it. If I fit a temerature guage I will be able to adjust it so the temps just right hence increasing power.

[Bungle]

its water that goes through the manifold but like they said do'nt worry about connecting it up

[ffb]

Thanks for your advice thats great.

Cheers Andy

[Dan]

Im pondering on whether to use an oil cooler and a small pump to pump cold water through it.

Cooling your inlet manifold will be quite bad for power in most circumstances as Mini's are fairly prone to carb icing at the best of times. Any Mini sold north of Scotland (Finland, Norway, Sweden etc.) was made with carb heating as standard right up until injection became the norm.

Edited by Dan, 20 April 2005 - 09:21 PM.

[Jackman]

Will having it plummed in in winter have any effect?

[Oldskoolbaby]

It may be the case with standard tuned minis but mines gunna be constantly running at about 3500-4000rpm with no2 thrown into it occasionaly. The exhaused will be red hot so the inlet manifold ent gunna be exactly cool given how neer it is to it.
I did mention that it will be adjustable so I will be able to regulate the temperature. To be perfectly honest though ive never had a carb ice up on me before and I only thought it was the case in very low climates.

[998dave]

It may be the case with standard tuned minis but mines gunna be constantly running at about 3500-4000rpm with no2 thrown into it occasionaly. The exhaused will be red hot so the inlet manifold ent gunna be exactly cool given how neer it is to it.
I did mention that it will be adjustable so I will be able to regulate the temperature. To be perfectly honest though ive never had a carb ice up on me before and I only thought it was the case in very low climates.

you clearly mean N2O, but i won't be too picky.

And I can do nitrous, currently designing a system for the mini!

[Oldskoolbaby]

Your totally right old boy, sorry for that.

You planning on putting on nitrous on then? : )

[998dave]

in wintertime it should shorten the time driven with choke in the morning, thus giving better fuel economy...

but at what cost?
warm air contains less oxygen... less oxygen gives poorer combustion... poorer combustion results in less power output... if this is what you want connect the hoses...
if not leave the holes blank...

warm air contains no less oxygen, warm air is less dense so there is less 'air' going into the cylinder, as the carb mixes fuel with air, this means you have less fuel/air mixture going into the cylinder, and so your engine can produce less power, combustion efficiency may be the same or even better...

The best solution that I can see is that if you want the benefits of the water heated manifold, but not all the time, is put a manual 'tap/ under the bonnet so tat you can switch the heating on and off.

Mine's not even connected, and I will be removing the ends when I next take ithe inlet manifold off as I don't think it's necessary in England.

[998dave]

Your totally right old boy, sorry for that.

You planning on putting on nitrous on then? : )

I know i'm right... Had this argument before I think, N2O has 33% oxygen, 'air' is about 19% oxygen, so provides more oxygen for the engine to work with, in theory, if you replaced the air filter with a BIG nitrous bottle you could get 181% more power total, ish...

Yes I plan on designing, building and fitting one for my mini, using stuff learnt in this degree to see what wilol happen to my mini if I do...

Dave

[Oldskoolbaby]

BANG! BANG! I should imagine: )

Good luck mate