BIG POWER.... A+series.....

[GingerWizard]

Hello all, i have just been give a bit of an ear bashing about power figures on mini engines.

I have a friend that has a 1071cc engine that pushes out 151.6bhp at the wheels with a 30shot of NOS. Its massively tuned, steel block, 16v head etc etc 10,000rpm.... Is there any one else here that has had similar expirence........ I am aware of 'Mini Williams', (1293cc turbo'd 211bhp....)

I need some backing here peeps!

Ginger Wizard

[dogfather]

1071cc @ 151bph i never though this was possible, sounds like a porky pie to me but i may be wrong.

[jimbo_m]

With a 16v head and other mods i suppose its possible. Must have been big bucks tho.
My friends 1293 turbo (fairly standard innards) is running about that.

Edited by jimbo_m on Tuesday 8th April 21:21

[fastcarl]

GingerWizard said:

Hello all, i have just been give a bit of an ear bashing about power figures on mini engines.

I have a friend that has a 1071cc engine that pushes out 151.6bhp at the wheels with a 30shot of NOS. Its massively tuned, steel block, 16v head etc etc 10,000rpm.... Is there any one else here that has had similar expirence........ I am aware of 'Mini Williams', (1293cc turbo'd 211bhp....)

I need some backing here peeps!

Ginger Wizard

can your friend supply a dyno printout from a respected rolling road, one with air conditioning and a controlled enviroment.or maybe a timing slip from a drag strip to show his et's and terminals, if the answer to the above is no , then the claims are worthless,
there are some very powerfull turbo engines about,well in excesss of 200 horses. with dyno printouts to backup.


carl

[woooorrb!]

Possible.

There was a guy who ran a maguire around here which had 115hp out of an 850 (short stroke) that was an 8 port running a 320 cam, etc. Did about 4mpg.

125hp from a 1080 isn't actually that serious. Good but no cigar. Especially with a short stroke and mega breathing head.

[guru_1071]

GingerWizard said:

Hello all, i have just been give a bit of an ear bashing about power figures on mini engines.

I have a friend that has a 1071cc engine that pushes out 151.6bhp at the wheels with a 30shot of NOS. Its massively tuned, steel block, 16v head etc etc 10,000rpm.... Is there any one else here that has had similar expirence........ I am aware of 'Mini Williams', (1293cc turbo'd 211bhp....)

I need some backing here peeps!

Ginger Wizard

a bit of an ear bashing? your above statement is utter bks.

121.6 bhp out of a 1071 motor without nos? - this is entering the world of harry potter - its just impossible.

the most ive ever seen from a sensible road spec 1071 is about 70 bhp (at the wheels), the most from a reasonable spec racer is about 85 bhp

even building an all steel (whats a steel block by the way?) 1071 (cost about 10 grand) will only see about 95-100 bhp, the costs on this engine spec of engine are required for the constant high rev limit, this will be with arrows rods, special pistons etc etc

even a proper 16 head wont up the power that much, a mate of mine runs an all steel kad 1460 (cost 25 grand plus) and that only makes 180 bhp.

even running a full spec 8 port with injection you wont see much more than 100-110 bhp - one of these motors will cost 12 plus grand.

id like to see a full detailed spec of your mates engine, and a dyno print out......

still youve given me a good laugh

[cone]

guru_1071 said:

GingerWizard said:

Hello all, i have just been give a bit of an ear bashing about power figures on mini engines.

I have a friend that has a 1071cc engine that pushes out 151.6bhp at the wheels with a 30shot of NOS. Its massively tuned, steel block, 16v head etc etc 10,000rpm.... Is there any one else here that has had similar expirence........ I am aware of 'Mini Williams', (1293cc turbo'd 211bhp....)

I need some backing here peeps!

Ginger Wizard

a bit of an ear bashing? your above statement is utter bks.

121.6 bhp out of a 1071 motor without nos? - this is entering the world of harry potter - its just impossible.

the most ive ever seen from a sensible road spec 1071 is about 70 bhp (at the wheels), the most from a reasonable spec racer is about 85 bhp

even building an all steel (whats a steel block by the way?) 1071 (cost about 10 grand) will only see about 95-100 bhp, the costs on this engine spec of engine are required for the constant high rev limit, this will be with arrows rods, special pistons etc etc

even a proper 16 head wont up the power that much, a mate of mine runs an all steel kad 1460 (cost 25 grand plus) and that only makes 180 bhp.

even running a full spec 8 port with injection you wont see much more than 100-110 bhp - one of these motors will cost 12 plus grand.

id like to see a full detailed spec of your mates engine, and a dyno print out......

still youve given me a good laugh

Nice to see you making full use of being back at work Rich ! + i was counting the seconds before you replied to this (bet it wasn't on Mick's rollers )!

[woooorrb!]

I disagree, it is possible.

If you rev the nuts off the thing and it holds together, you could get some serious welly out of it. We are talking serious serious revs like 11K, which I don't think would be impossible running bike pistons, ultralight rods and a proper crankshaft. If you consider the ability of a Kad race head to flow and you add to that with long cams and a very high compression ratio, it would be doable.

Neville Tricketts racer had a silly output on a 5 port head and that is very well documented. I think that was a 1098 (1071+something) and running odd internals.

The old "rev the st out of it for power" approach is long dead, but it worked a treat. Remember those 51mm stroke crankshafts? 13000Rpm.

I doubt that anyone, including matey has done that for years and years, but it is possible. Also that power figure at the wheels is a bit far fetched. Seeing 120hp/L is possible with a square engine and appropriate valves.

[Mr Edd]

It may be possible at the flywheel.
IF
1) You serious don’t care about engine life. (Life may be measured in minutes)
2) Put the compression through the roof.
3) Don’t run the engine on normal pumped fuel or at least with serious amount of octane booster.
4) All steel and very well put together rotating parts.
5) Big valves, laree Cam.
6) Very small power band.
7) Very lightweight valve train, Titanium valve caps etc.
8) More cooling than you can fit under the bonnet.

It may be possible if you willing to spend a bucket load of money to say i did it. But you better put a very large bin into the budget as it will explode.

On a road going engine it just wouldn't happen.

[SteveOlds]

And.. Best of all, Would it EVEN be worth all that hassle? Not to mention Cash. Unless he's braindead, And The Halifax's favourite customer.


Give me ££££'s.. And I'll salvage a small jet engine from the back of my work (Aerospace Engineer.. Me )

Youd have more fun with than, Than pissing about with A 50 year old engine.. Just so you could drag it on the road, running 2mpg

People get so serious in these forums..

[lowandslow]

you'd be amazed at what some engines will produce compaired to others. my old 998 with a stage one kit was making 58BHP but a mates with stage one and a better cam only made 52BHP.
the mini willams is my mates car and it runs a tad more than 211 now more like 310BHP!!
the head will be where most of the power in that 1071 will have come from. 151 isn't impossable.

[Baldspeed Racing]

mmmm im unsure on this seems very small cc for the amount of power. Ive got a pretty tuned up 1380 and ive got 112bhp at my wheels

my mates 1430 running split 45's only has around 140ish

[jammy_basturd]

The biggest restriction on power with any A series engine is the head. With a 16v head, and 30 shot of NOS I'd say that power figure is entirely possible.

Don't forget that the 16V heads can produce some impressive torque figures, then rev that engine to 10k and (because power is a function of torque), all of a sudden you have massive power.

[vrooom]

were this 151hp 1071 rolling roaded on certain rolling road ?

[annodomini2]

I know of a 1380 16v turbo dyno'd in excess of 300bhp, currently trying to get a gearbox and drop gears built to handle the torque.

[5318008]

I read something of a methanol powered A Series producing over 300hp a long time ago, it was in a rail dragster and was obviously FI.

If you use something other than petrol, you can easily get massive power.

[jammy_basturd]

Auto Delta (think they've changed their name now though), have a racer with a, IIRC, 1460 KAD NA engine reportedly putting out 210bhp. Or at least thats what the Mini Worldazine said a couple of years ago.

[annodomini2]

5318008 said:

I read something of a methanol powered A Series producing over 300hp a long time ago, it was in a rail dragster and was obviously FI.

If you use something other than petrol, you can easily get massive power.

Running Super unleaded.

[eccles]

The Hamer brothers run a very well sorted 998 turbo hillclimb mini, this puts out around 140bhp, although i think this is at the flywheel. If they wind the boost up it will put out more.
My mates old 1400 with split 45's etc used to put out 140bhp at the flywheel, 117 at the wheels.