100+ BHP mini?
Turbo Mini Forums

Hi Everyone.

I am new to this forum but the same question has brought me here. I wish to find out which 16v twin cam head conversion is the best route to follow, my choice lays between the BMW K1100rs head conversion or anything along them lines.
My other option is to purchasing a kit purely produced for the A series engine http://www.minispeed.co.uk/content/kad-16-...-big-valve-head. I have stumbled accross a 1275 engine for a rediculous price and cannot refuse, however i wish to produce an engine with some poke! and abit of a project if im honest. Any help would be grand!

Thanks alot. Jack

Edited by MiniFTW on 20th Sep, 2011.

Never underestimate a Mini!

Why not an ally 7 port and efi with a nice turbo on the back, cheaper than a kad conversion and you still retain the bk450 hg instead of the £100+ for each k hg, withough having to fully dry deck the head and block and then punch new holes for the head studs on the k conversion like jimster did for his build.

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-Rover 100 VVC #2 - track project

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The KAD kit is very expensive i must admit, so thats most likely out the window however from what i have seen producing your own K conversion is a good route to go down, I just wished to find out the complexity of the build and how hard it is to source the parts these days? and possibly a rough ball park figure on how much the build cost's from those who have done this.

Never underestimate a Mini!

id go to KAD again if i wanted another 16v engine.

If you want more poke than 150bhp from a KAD engine youll be in 5 figures though.

Im sure you can get the same power for less from the BMW conversion and it looks like a neat bit of kit.

It just depends on how much money you want to spend, as Paul R says, there are other options.

Matt W

Well if i was aiming for around 100-130 bhp and wished to spend as little as possible while still maintaining quality parts and a good fast road engine, what would you go for? Im just lost as which direction to head in because once i start i wont stop lol.

Never underestimate a Mini!

What about the S.C. 7 port head? Bolts straight on, easy enough to do fuel injection and no complicated fabrication or kits.

do you definately want 16v? 100-130bhp can be found from 5 port 8v no problems, with a turbo.

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

I have looked at the kit, specialists components offer with the S.C 7 head. will having the ECU fuel injection give much more power over traditional carbs?

Never underestimate a Mini!

If your aiming to spend as little as possible then i wouldnt go for the KAD conversion, because as youve said it is expensive but everything is bespoke and you get what you pay for?

If i were you id weigh up the cost between a 7 port Specialist components head and there 16v BMW head conversion.

Matt W

Between the two the 7 port looks to be better financially however from my understanding the bmw leaves more room for tuning... correct me if im wrong?

Never underestimate a Mini!

Have a look at sc, tbh 100-130 i would do a 5port turbo personally cheapest way and people have run this power on daily drivers with not many problems.
As for efi over carbs i would only go for efi on a 7port or 8 port myself, think of modern cars do they use carbs or efi .

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-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

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Do you want to stay n/a or go turbo at some point? If n/a i would say k head if turbo, then 5 ports are in the 200+hp quite alot and matt woods has had 310 with nitrous

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-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

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Well Efi haha but i am trying to stay within boundaries If turbo is good with little problems etc, Would i be looking to replace the crank pistons etc? as im sure the power would make mince meat of the crank fitted to the early 1275's...

Edited by MiniFTW on 20th Sep, 2011.

Never underestimate a Mini!

With regards to 7 port i personally think a choke per cylinder would be better and easier to do than say a plenum chamber and a single throttle body. But im sure some would not agree with that statement.

If i was going to do a 7 port id have jenvys or similar with an omex ECU, but thats more expensive than twin carbs and also more expensive than making up a plenum.

Matt W

So between the 5 port with a turbo or the 7 port runnin on a EFI system which is gonna leave more room for tuning in future years etc... I havent read over this but will a turbo system fit in the engine bay with a 7 port system?

Never underestimate a Mini!

Changed from POLL to POST for you

I seriously doubt it!

Cheers paul!

Never underestimate a Mini!

Yes you can do 7 port turbos, running efi or even a carb ;-S, wolfie, wil/ben h hill climb car and another i think joe please correct me if im wrong are have/building 7 port turbos. You could even do a rotex super charger setup like the sc k head kit

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

have a look at my build thread below,

an easy route would be the SC 7 port head as it has injector holes in the head.

i am also doing a 7 port and have the ally version of Joes head, if i did it again i would use the sc head as theres less fabrication involved and is a smaller package

Stupid question but why not put a different engine in other than A series?

Honda, Vauxhall red top etc.

Speed doesn't kill, suddenly becoming stationary, now that's what'll get ya!

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

Because apart from the odd acception A series engined minis are generally quicker than any other conversion.

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www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

Thanks alot for the help guys! I feel that this engine build would be the death of me without some decent guidlines and pointers to follow along the way, the threads linked should get me on my way... eddie allthough i have seen fantastic results provided by the B16, vauxhall and suzuki conversion, I would like to hold onto my A series engine as i feel it keeps the car some what more original... plus i love the sound created by the A series engines I will update a new thread as my autumn/winter project comes along, most likely with more questions! Cheers!

Never underestimate a Mini!

From a 16v thread to '100+ horsepower'?

Any big bore turbocharged 5porter can make 100hp without breaking a sweat.

16v heads are a whole new level of wallet emptying!

What do you actually want out of it? What's your budget?

In the 13's at last!.. Just