250bhp + maybe more
Turbo Mini Forums

Well, I have approaching that in an 1949 designed Austin with mediaeval suspension and it doesn,t scare me - yet !

A friend with the racing (but road legal) A35 is looking for around 230/250hp in its next iteration and I,m looking forward to a ride in it.

150bhp is about right in my opinion. The van was fun with that sort of power but was scary when it was 175+. I like my blue mini and I reckon it was about 140. Hoping for more next time but will be switchable!

If something is worth doing, it's worth doing half of.

130bhp got some getting used to. It was quick but fun on the road.

160 (different engine) was stupidly quick and you had to hang on tight...

180 at present, still running relatively low boost. Its stupidly quick for the road, yes I could probably bleed a bit more boost off and be pushing 200 bhp I expect, but at the moment there is no need.

to go straight in saying that you are aiming for 250 bhp initially is either stupid or just a dream

Nothing wrong with having aspirations,



carl

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No. 10

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=258454

:)

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

If 150BHP is around the maximum for a road car, how easy would it be to get 150 from a small bore?

With my current 998 build as an example (90BHP target)...

998 cc,
8.5:1 CR
12G-940, some porting, std valves.
Kent 266
Standard bottom end plus oil jets
Standard gearbox plus X-pin diff
Wet manifold injection, mapped ignition
Intercooler after initial testing

...I'm now curious as to how far am I from 150BHP ? Compared to a large bore 150, Would a small bore 150 be a pig to drive on the road?

Standard gearbox will not be up to it but 150 from a 998 should not be too difficult. With a gt17 it may take a little while to get moving

Id like to go in a proven 170 180 hp mini , mine was supposed to be 130 at the wheel so maybe 150-160 ish and it definitely needed more. second gear was ok but lacked third and fourth. it did used to run out of gears fast running a 3.7 diff tho.

Exactly!!!

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Hail Allah I say,

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PowerCruise is an example of the Australian way

ive not been in a turbo mini only driven a 1310 cam n webber was fun but still felt slow

probably stupid to think the way i do but how can you ever have to much power? come on man

If that's the case why not try for 400 bhp mini

Anyway back to topic paul wasn't you'd old red mini 998 at 125bhp?

Ok, my tuppence worth. Very few have reached this level of power, and to an extent, the builds are shrouded in secrecy (understandably given the level of effort and expense applied).

The way forward these days would be with a K head and turbo i'd expect.

There have been a few high powered a series 5 ports though. Cant recall what miniwilliams is running with his or nic these days.

In the interests of progression, i'd say go for it, although it will need a pretty well sorted car to go with it or it will just be pub bragging rights. We've all seen high powered cars trumped by lesser ones on the track

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

this is one thing with big power motors, your only ever going to make 1300cc's worth of power off boost, if you have the boost coming in strong and sudden then adding 100+ hp in say 1000 rpm is going to get pretty hairy,

you can combat this to an extent, ie a big turbo that comes in late and builds boost with rpm, or map the boost against rpm, or against the throttle.

The car will not be a road going car
No 10 all the way
So most suggestion is k head
So thoughts on turbos
Aswell as bore size

Well IMO head options are, Kad, BMW K, SC 7 port.

the 7 port will get there, but ditching the pushrods makes such a quiet engine.
as a guide wil h has made vertually 180hp from a 998 at 18psi on the SC 7 port, I would expect you could hit 250 hp on bout 22-24psi boost on a 1293.


turbo wise I would look at the gt2056, maybe the gt2259 as its not a road car.

bore size, go 1293 and you have room for rebores in the future.

I agree any fairly lightweight road mini with roughly 150bhp is scary enough! Scoobys, evos, are quick but thats it... not scary, i often come back from a blast adrenaline pumpin, hairs standin up thinkin thats just stupid now! No more lightening, no more power.. (yeah right ) but ive never had that from any other performance car, dunno how u 200+ guys do it.. but will hopefully experience that one day

Just hold on tight Dave

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

Im going for the bmw k series route
At a guess I would assume injection would be better from carb
However im confused on which cam to go I assume you can change 1100, 1200 cam but then there is rs im confused on what actual head to go for 8v or 16v f

the K1100's have the 256 degree cams, the K1200 RS has 284 degree cams,

the 8v ones have 284 degree cams too, didnt come with the short cams though.

really the 284's are probably a bit long for turbo use, but you can fiddle with overlap as they are dohc.

I bet that was scary!

I look forward to seeing your progression on this 998 (y)

I am sure that sometime soon someone will get 250hp from a 5 port #drunkentweet


happy neqw ywear

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."