intake manifold
Turbo Mini Forums

what do you guys think about this:

i am thinking of building an intake manifold but i will make the runners longer than normal (about 4-5 inches) so that the carb will sit further away from the turbo reducing heat transfere to the carb.........

do you think the longer runners will cause any power or drivability issues.

'I swear to use the Boost, The whole Boost'
'And nothing but the Boost..... So help me God'

Does seem like a lot of effort!
I can't think of any problem with the theory however - but if you are going to go to this extreme, you might want to consider making the runners tapered...

You'll still run into clearnace problems around the exhaust manifold of course!

errr there are better was to solve ambient heat transfer, such as lagging and sheilding.

Are you having massive heat transfer problems at the moment?

Alex

AlexF

i am in the process of building my mini........

i was just toying with the idea of building my own manifold as i dont have the original.....

i only have the cast iron mini one, could this one work well?

'I swear to use the Boost, The whole Boost'
'And nothing but the Boost..... So help me God'

I think you need to use the proper metro turbo manifold inorder to clear the turbo...

I think I have a spare or 5 at home... if ya need one.

Alex

AlexF

crap, does that meen the normal mini spares inlet wont clear the turbo??

sory to hijack.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Im pretty sure they wont unless your using mirage manifolds

The std (nat asp) MG manifold clears...

cool I have even more turbo inlet manifolds then LOL

Just what I need :S

Alex

AlexF

Learn something every day

but you'll never catch me using one on a turbo....

go on dave, why not????

And on the 7th day........... God created turbochargers!

*sits patiently at edge of seat*

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Well,

They flow nearly as well as the 'nat asp' MG Metro, despite their appearances.
For Mixture distribution however, the stock 'turbo' manifold is hard to beat. There is no 'favouring' of any ports, which gives a more even (or as good as can be achieved with a carb'd A-Series) mixture distribution. This is why the 'very best' A-Series are usually found to run on 'split' webers...

Of course It might matter naff all on your average engine/tune, but the theory and the shape of the 'stock' turbo manifold compared the nat asp one is a good indicator in my opinion...

i might try my old cooper one though, the stock one is a git to put back on wiht the spanners, my nice cooper one that i had on the 1.3 was "rachetable"

Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
Previous engine: STD metro turbo, megajolt
Drives: 399bananahp (flywheel) Honda Civic Vtec b18c4 T28 Turbo 1968 Mini

Megajolt maps to download: http://www.jamesfawcett.co.uk/cms/index.ph...&gid=3&Itemid=3