[SteveM3]

Me-thinks Roland has shares in the tyre industry .

[Bhozar]

You fitting this kit to your current MCS?

Are people going to be able to take it for a test drive before dropping £6k on the kit?

Any parts from my setup able to be used on this, other than the CAI kit?

Any plans for an improved intake manifold?

Would port matching the cylinder head to the intake and exhaust manifold see further increases?

Will the standard clutch and gearbox need any changes for longevity with this increased power?

Is additional cooling a good idea? Uprated rads, oil coolers etc?

How is it going to sound? I usually hate turbo's as I just dont think they are as cool as a SC. After all, fast Jags always have an SC.

What do you call a (good) waranty?

[Ant FR]

It sounds great 300 bhp. And i am sure it will be superb and very very flashy rolling up with hissy turbo.

HOWEVER.

For everyone?, i think not. I think a few people are just blinded by big Bhp figures, and thats not where it all is. I speak from experience as previous car was a 240bhp 1.8T ibiza and my little brother has 280 Bhp Fiesta RS turbo currentl. Quick they both were ( in fact the fiesta my brother has is absoloutely bonkers !!) but in a straight line that is. round the bends was a different matter.

And i don't say that due to the cars being renowned for ***** handling, it was mainly due to the on/off nature of a big bhp turbo car, they are so all or nothing. And although great for making big BHp i just think they are poo for swift fluid driving.

That was the main reason for going for an MCS in the end as i loved the almost naturaly aspirated style of power delivery. Nice and smooth and progessive. So for me i will be sticking to my original plans of a GTT220-230 conversion as i think that will be more than enought for my little MCS.

But look forward to seeing this turbo conversion on the road soon Roland.

But what i would love to see is a track comparison of say a GTT230 car vs the big 300 turbo one. I honeslty think on track there will not be too much in it. Plus remember the comments on the BBR300 conversion, most have said it is too quick for the chassis.

However GTT being GTT, they will probably make me eat my words and bring out an amazing conversion as ever. roll on March.

[roland2003]

Hi guys some fair points there. The turbo we will initially be using is not an off the shelf unit; we will be using a slightly smaller turbine housing to aid faster spool up . For maximum peak power we could use a larger AR turbine housing .The lag would be noticably worse though
Mid range pull and lack of lag are very important for a car used on the racet rack or road. In contrast for drag racing you can use bigger turbos, you just 'full throttle gear change' , so the turbo remains spun up all the way. Between 1992 and 2000 we tried over 50 different turbos on the Renault 5 turbo; you learn the effect of different trim compressor wheels, ' cutback' wheels, different size turbine wheels and different A/R turbine housings .What we use for rallying or road or race is quite different to the best for drag. Mind you Im still proud of the 12.64 @113mph we did at santa pod. With a 1.4L pushrod engine from the jussasic period ,no nitrous (just pump fuel ), single carburettor,road tyres, no LSD, fully road legal (tax& mot) driven 200 miles there and 200 miles back. No launch control, No ignition retard to create boost on the startline....those were the days.
The GTT turbo conversion will probably include our dashboard boost control so you can adjust anywhere between say 180bhp and 300 even on the move.
Bhozar......... We are using a front mount intercooler of twice the capacity of stock ,its full frontal positioning further reducing inlet charge temp.
The coolant pump is replaced with a very high flow rate electric pump with electronic temp control. Weve used this pump before .....its very effective! I fully expect to encounter problems and design changes along the way., hence the 'outline only' spec available at the moment.

Besat Regards Roland GTT

[MINI-Morgan]

Sounds good Roland Good to see someone taking the step to dump the SC finally as most other tuners have taken the easy way out. Not that their kits arent good but its just seems wrong feeding a SC with hot air from a manifold hot turbo and well why waste the energy turning a heavy SC all the time. Also i'm guessing the electric water pump wont kick in till the engines upto a good temp? Saving fuel and energy in cold starts?

[E74778]

.

[Bhozar]

Quote: Originally Posted by E74778 (original)

Well TBH I wasn't going to bother with the R56 Convertible having seen the R56 MCS recently but 300 to 350 BHP for £6K

Hell, I think you may have just changed my mind Roland.

Al.............

Except this isnt for the R56.

Thanks for the info Roland. I think I might improve handling further on my car and wait until I see what you have out next summer, which is when I was going to be after more power anyway.

[Paul Webster]

Quote: Originally Posted by roland2003 (original)

.What we use for rallying or road or race is quite different to the best for drag. Mind you Im still proud of the 12.64 @113mph we did at santa pod. With a 1.4L pushrod engine from the jussasic period ,no nitrous (just pump fuel ), single carburettor,road tyres, no LSD, fully road legal (tax& mot) driven 200 miles there and 200 miles back. No launch control, No ignition retard to create boost on the startline....those were the days.

Besat Regards Roland GTT

I was having the same conversation with an old racing pal on thursday how we struggled to get a 11.98 on treads in 1987and 10s on slicks and now 20 yrs later the new Mini is heading that way.

And my twin turbo BBC bottom end held up to this abuse this year;

YouTube - In-car in the world's quickest street legal car

UK's Fastest Street Legal Car » SpikedHumor.com

[roland2003]

Hi, yes as well as losing the drag of the SC (big drag) we loose the (much smaller) drag of the water pump which is gear driven off the SC. Turbo drive (exhaust gas) is almost free. Fuel consumpsion should be much improved too (with in car boost set to similar power/boost to SC cars.)
Best Regards Roland GTT

[AndyH_MCS]

Any more news on this conversion?

I presume that the standard gearbox would need some attention before fitting? Also what would be best on the suspension front? Would the standard suspension just about cope? Any 260 Kit owners with standard suspension feel free to comment.

The new turbo kits do look VERY exciting

[roland2003]

Yes its coming along well. Weve proved the new fuelling system (mapped for upto 30psi boost and injectors that flow around 400bhp) ,most other parts are either fully or part designed. Lots of people say they will do something like this and never do it. -We will be on the road by end of March.
Best Regards Roland GTT

[David_MCS]

Thats excellent news and i'd like to say congratulations for putting yourself out there to design such a kit!

Is having injectors that can flow 400bhp but running them to flow 300/350bhp a saftey margin that your implimenting? If so it sounds good

Looking real good Roland..

-David

[roland2003]

Yes around 85-90% duration is an ideal max. Too big & some injectors wont operate properly at idle, and if too small wont operate properly (or even max out) at full revs /WOT .
Best Regards Roland GTT

[roland2003]

Hi Guys, we should have the GTT300T front mount intercooler on within the next couple of weeks, I will take some pics and post up asap. Also the big GTT top mount airfilter box is (mostly) finished ,allows only cold air in,plus the bonus of some ram effect at speed. Worth pointing out is the entire conversion will be designed,made and fitted by GTT here in the UK . It is designed to comply with all EU emissions regulations, and is designed from the onset as a road conversion with good power delivery with good spool up, longevity, and drivability under all conditions.
-Next up the GTT300 exhaust manifold
Best Regards Roland GTT

[GTT 280]

Any pictures?
Can these be fitted to the GTT260?

Cheers,
K.

[roland2003]

Hi Karl, no at present its not compatible with SC cars. We may look at doing that too, but is difficult enough already ,and thats with round pipes.
Best Regards Roland GTT

[David_MCS]

All sounding very good so far Roland, look forward to seeing the pictures

[G-Man]

Hi Roland your turbo only setup sounds good, just one question is it going to be the same as the BBR turbo setup but with better parts and setup? And I'm sure you won't be charging the BBR price ether.


BBR setup

[MINI-Morgan]

I would have thought the top mount intercooler might vanish if there's no supercharger at all. Hopefully Roland will give us some ideas but from what i've heard its still very early days.

[MINI-Morgan]

Quote: Originally Posted by roland2003 (original)

Hi Guys, we should have the GTT300T front mount intercooler on within the next couple of weeks, I will take some pics and post up asap. Also the big GTT top mount airfilter box is (mostly) finished ,allows only cold air in,plus the bonus of some ram effect at speed. Worth pointing out is the entire conversion will be designed,made and fitted by GTT here in the UK . It is designed to comply with all EU emissions regulations, and is designed from the onset as a road conversion with good power delivery with good spool up, longevity, and drivability under all conditions.
-Next up the GTT300 exhaust manifold
Best Regards Roland GTT

Good work Roland Look forward to the pics.