a-series turbo with looong primaries in the manifold
Turbo Mini Forums

case you havnt seen it : -

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

and a std bulkhead!!

edit: duh, no its not

Edited by Nic on 30th Dec, 2005.

Interesting interpretation, i would assume to give some kind of tuned primary lengths? Although i would guess that with a turbo primary lengths are not a whole lot important!?

I don't see the point. Tuned primaries are used to give the reflection shock wave "extractor" effect at a certain engine speed in a NA engine. But with a turbo engine, you have boost pressure to extract more power from the engine, so tuned lengths becomes pretty ineffectual.
If the effect of the long manifold tract lengths was to move the turbo away from the bulkhead, meaning no bulkhead box, I could see the point. But other than that I don't get why the chap has done it like this, what does it add over and above the standard exhaust manifold?

equal length manifold primaries are good on a proper 4 pot, but i dont see the idea on a siamese port engine...

It's to do with pulses - ands the length of them in a turbo... Picture - if you had (for example) 12" in the outer 'a', and 2" in the inner 'b' and 12" in outer 'c'.

Order of 'action' from firing order 134213421342.... is therefore abcbabca....


If you have such a short length of 'b' then it's clear that you'll have a 'gap' in flow inpinging on the turbine wheel when 'B' has finished. Also - there will also be a point that there is a 'double' volume when 'a' or 'C' have finished, as 'b' will already be at the turbine...

How much of a difference? I don't know. But i do know that i'm going to go equal length on my runners - because it is bound to be better. 10% better or 0.00000010% better? I don't know!

Remember ; The middle branch is separated by 360 crank degrees, so you can treat it as 'two' separate pipes to all intents...

Edited by turbodave16v on 30th Dec, 2005.

Anyway fcuk about lenghs of pipes!

Had a look at his site and it is quite a project!...a realy thought out flip front, the weight of it would keep Fastcarls sleepless for a week but it is a "proper bo" job.

Antone notice is "oil injection/olie injectie", seem to put out a smoke screen at the push of a button.

Good effort!

Edited by giallofly on 30th Dec, 2005.

intresting!

Ah - Cheers for clearing that up Dave - I didnt realize that was the firing order on a mini. I'm showing my a-series newbie side now.

1152cc turboed mini clubman, most powerful 1.1L a-series?

http://boostmini.justboard.net/

Read through it all, that guy is a genius.... very over engineered.. which is good

has any one noticed the back plate where you cahnge the followers on the block?

Edited by Miniwilliams on 31st Dec, 2005.

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

I think you'll find it's for mock up only and the real deal is coming later.

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.

have you seen the pics of his home made roll cage, he was bending the pipes in his front room lol.

i wish i was that handy and had the patience to do stuff like that.

no longer a series, but still 1.3 turbo.

03-01-2005 - To keep noise down for my neighbors I placed the workbench on rubbers. On the floor I used the Mini rubber balls, as used in the suspension, and on the wall I used Mini engine mounts.

http://www.xs4all.nl/%7Ethimo/dagboek/03-01-2005.html

Love it!

Edited by turbodave16v on 31st Dec, 2005.

ill give that manifold about 3 months before it cracks been better of in stainless as its a bit more resistant to cracking.

always looking for them bigger bunches of bannanas

clearly alot of thought time and expense has been poured into this one, the custom exhaust alone must have taken ages, a true genius, i hope it turns out well and gives him all he expects from it, but i reckon it will, and some .....

Richie

______________________________________________________
TRADER HALL OF FAME
BENROSS...MINIMARK..WOLFIE (comic genius).....CARL....MARTPAUL.......AXEL
______________________________________________________
TRADERS OF SHAME
1 user....pm me 4 details

LEGENDS
MikeRace, Mini13

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com