Turbo weight saving! gains to be had!
Turbo Mini Forums

Just out of curiousity and after handling built manifold assemblies from the metro, and my t2 mirrage setup, (inc turbo) I noticed a fair weight difference, so I popped both setups on the scales in the workshop and was supprised. The metty assy weighed 12.450 kg, and the mirage set up weighed 6.950kg 5.5 kgs less, doesnt sound alot but in the bigger picture........

it all adds up! depends what you want ?

which camp you want to be in

WAHOO!!! I made an unintentional weight saving!!

now, wheres my hole saw gone...

o yer but doesnt the mirage setup restrict flow?
so the weight you saved is then effectily put back on with possibly more weight by bad flow?

make any sense??

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985

Interesting, another reason to bin the T3 barge

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

i thought you used that cream and it got better nic ???

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

So in that case would it be possible to make a custom alloy manifold or would it not be able to cope with the heat?
What about a titanium one?

incronel (sp?) is what you want

If by alloy you mean aluminium no,

the melting point of aluminium is around 600deg and i think there's some aluminium alloys that melt around 800, might be ok for an exhaust from the down pipe back but not for the manifold.

Ti and Inconel both have high melting points I'd imagine this makes them a pain to weld? also sodding expensive, this brings you back to either steel or stainless steel.

Don't think its as critical as a normally aspirated manifolds mini13

Sounds like I've opend up a debate hear? lol was curios tho about the flow of the mirage set up?
LMAO @ Nic!!!
Shane.

It would be interesting to see the results of a back to back test....

Hi,
The thing to bear in mind is the exhaust pulses don't all arrive at the same time.
Nics car apparently goes like sh*t off a shiney shovel, So they can't be too bad
Cheers,
Gavin :)

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My Mini build diary

if anyone could get theyre hands on a flow meter id be more than willing to pop my manifold on it

this debate has come up a few times before, lets see what happens this time....

did you mean inconel nic???
its used in high temperature exhaust ducting. they used it on the wessex and seakings. i have some sheets somewhere!!!!!!!

its heavier than titanium by the way!! (and its about 8 times more expensive too!!!!!)

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

I very possibly may have done!! All i know is a picked up an ex F1 manifold made from whatever it is

that was shaped like a pretzel and it was considerably lighter than my manifold

God i thought we had put this "restricted flow" to bed Nic, think you had better win this year !! lol.

I'd say the manifolds loose a bit on the pulse from the side cylinders, but the centre shared port is very short and is pointing straight down the turbine, so it gets a strong pulse on each of the pulses down the centre.

Remember that putting a turbo in your exhaust makes the design of the system very different from a NA setup where you tune the exhaust so the exiting charge creates a lower pressure at the valve end to help scanvenge the cylinder. You dont get this with a turbo.

5.5kg, thats almost 1% of car weight if its already been on a diet.

If you fancy Inconel bear this in mind. I had a set of thin wall stainless bananas made for an historic F1 (V8) made about 3 years ago, these cost £3500 and the company quoted me nearer £7000 for the Inconel !!! Owwwwwwww

Mine seems to flow well too

just need to prove it in july!!

On 7th of Apr, 2007 at 02:44pm iain said:
Mine seems to flow well too

just need to prove it in july!!

no longer a series, but still 1.3 turbo.

i reckon he will sell before then.....