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friend of mine has 240hp turbo Bimmer twinky
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Author:  TheMiniMan [ Mon Sep 01, 2008 5:01 pm ]
Post subject:  friend of mine has 240hp turbo Bimmer twinky
yes,,, you heard it 240hp turbo Bimmer Twinky ..... i`ll see if i can sort the dyno sheet for you all but "apparently" he has produced 240hp on the rollers

hee hee,,, now that`s a good number to play with isn`t it???
Author:  Spaceboy [ Mon Sep 01, 2008 5:31 pm ]
Post subject: 
so.. most powerful a-series on the planet? :shock:
Author:  minidrifter [ Mon Sep 01, 2008 5:34 pm ]
Post subject: 
would it still be classified as an a-series with the bmw head?
Author:  Spaceboy [ Mon Sep 01, 2008 5:35 pm ]
Post subject: 
minidrifter wrote:
would it still be classified as an a-series with the bmw head?


i would
Author:  TheMiniMan [ Mon Sep 01, 2008 5:41 pm ]
Post subject: 
no,,, not quite,,, there is supposed to be another turbo mini with 300+hp

but it spat the gearbox on the rollers & disintegrated itself
Author:  slide [ Mon Sep 01, 2008 5:58 pm ]
Post subject: 
There was a 1293 featured in Mini World the other month which produced over 300 hp with the turbo boost screwed right up. I think it belonged to their photographer. Hardly practical for ordinary use.

A BMW head on an A - series isn't that different from a KAD or JKD head really, so I'd still consider it an A series. BL also made some (4) single overhead cam experimental prototype heads and fitted them to Minis - one is in Gaydon (and another is on a 1380 road car).
Author:  Angusdog [ Mon Sep 01, 2008 6:27 pm ]
Post subject: 
I'm a bit dubious of some of the bhp figures in the magazines, apart from the relativity between cars tested on the same day on the same dyno. With the changes in atmosphere, different types of dyno and so on, I think it tends to lead to bragging rights but not a lot else.

Plus don't the brits extrapolate the figures back to work out an "at crank" figure and publish that?

Having said that, if someone would pay for it, I'd swap either or possibly both of the family jewels for a well sorted 16 valve motor - not bothered by turbos as the family wagon drives me bonkers with turbo lag.
Author:  TK [ Mon Sep 01, 2008 6:35 pm ]
Post subject: 
so 200+, 250+ and 300+ horse power is fine for the old three main bearing crankshaft?

I wonder how long it would last?
Author:  awdmoke [ Mon Sep 01, 2008 6:38 pm ]
Post subject: 
My bet is, longer than the gearbox!

Sure would be fun finding out.
Author:  jbeenz [ Mon Sep 01, 2008 7:09 pm ]
Post subject: 
The 300+ one is Matt woods aka mini williams, it was in miniworld about 4 years back making 208bhp, then 225 etc. Hes running on 10's :D
Author:  TheMiniMan [ Mon Sep 01, 2008 7:46 pm ]
Post subject: 
yeah , he`s madder than i am that`s for sure,,, & yes the Pohms do tend to calculate transmission losses (guestimate) before running them hard on the rollers, so they are generally power at the flywheel figues (sort of)

But still, that`s an awfull lot of grunt isn`t it???

& Ty,,, the mini gearbox does tend to cop more flak than it deseves, they really are a pretty tough little thing,,, but No, both the crank & box design & strength of package wasn`t really meant to handle much torque, but they are well known for hanging onto approx 180hp for quite a long period of time & most hot mini power units don`t actually see 180hp for any "long" periods of time, more short squirts & then soft runs to the shop & work & to the coast & on mini runs to a lookout , have a BBQ & cruise home, so you could quite easilly play with the turbo twin cam for quite a number of years if you were sensible :-)

There are plenty of KAD & Jack Knight twin cams about , all over the world, & have been running for quite a number of years happilly,,, most people with them are fitting good quality upgraded parts inside while they`re doing the conversion , i don`t know anyone stoopid enough to drop a turbo twin cam donk onto a shitty old worn out crank & box,,, do you???

I can quote a lot of peoples names here who have produced very very healthy power curves indeed, (modestly saying myself included) & have them raced all over the place for long periods of time & generally they re-ring & bearing them every 200miles or so, trim valves & reseat, check a few things, maybe a new oil pump or a set of valve springs here & there etc,,, just to make sure they`re crisp & clean for the next season, & they do this for years & years on end,,, if no major failiure occurs then they still keep using the same crank & gearbox the whole time, so they can`t be as bad as some suggest hey?

However,,, in saying all that,,, i`m not forgetting the fact that we are dealing with often 40 year old stuff & hence why people like GR & the likes in England & America are producing brand new cranks & gear sets & they`re obviously the onse to use to help illiminate or at least "lessen" the chances of those catastrofic failures we sometimes here about. Matty Woods major blow up was the result of a mainshaft breaking,,, now that is a pretty rare deal indeed isn`t it,,, who of any of you have heard of a mainshaft actually "Breaking",,,, not many i will bet!!!!!!!!!!!!,m,, so hence it wasn`t really a crank problem or a gear or case problem in "THat" instance & i expect he has the wildest power curve of any A series mini engine on the planet at this point in time.

open to any comments &/or critcism on all this too please???? correct me if i`m wrong i`ll be happy to bow down to anyone with conflicting evidence.

& sorry for the long post,,, (again) :-) i`m in typing mode with my Bimmer twinky conversion guide
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