as above states im changing as of tuesday with Nobby's help to the Gt3071r

back down to FC Performance on thursday also for tweaking of the map too only going to be looking towards producing the same figures as now tbh but just by running less boost. but we will see what happens

Just thought id share my next upgrade with you guys.

Good news

What model of GT3071R? The GT3071R-WG 0.64 like mine? Or the bigger with external waste-gate?

its not external and is 0.64

Yeah right

So your not selling up then?

Nope couldnt do it had nice run of work to bring in some pennys.

bring on the

Cool so what about those forged parts? Is it worth going GT3071R on STD internals even with low boost or did you sell the RS before you realised you were gonna keep the car?

well tbh i needed to sell the forged stuff anyway. yeah i think it is worth it as i wont be abusing it and taking the piss running 2bar as i know i be treading on ice but just running 1.3bar should be fine i think if not then hey. . . . hopefully by then i will of saved more money to go forged but i will just have to stump up full price etc.

but im not planning on my car going bang for quite a while. not untill i know i can get it rebuilt straight away anyhow.

So you are going to run exactly the same turbo as mine

GT3071R-WG 0.64 rules!

The only difference is that i'm going to run high boost

guys i want to see movies and pictures of yours car´s running

Have you thought about changing your exhaust for a bigger one Luke,
that with help you make good power with not much boost.

Ben

yeah i have just need to find one and i dont want a really loud exhaust either

Luke - we need to gang up on Paul at Motormech and get him to build a "quiet but characterful" 3" exhaust for both our cars

I need the same - I could do with a bigger bore, but I definitely don't want any more noise that my SuperSprint

It will be interesting to hear your thoughts on the GT3071. My GT2871 is now one of two limiting factors (injectors being the other), so I'm wondering what to do next.

Nigel, definatly on the exhaust front i dont mind it being a tiny bit loud when giving it full beans but not really boomy loud on idle low revs its just a bit chavvy IMHO

Yeah as for the GT3071R you never know if its a bit too much for what i want out of my setup the The turbo you have we could do some sort of swap/deal etc. but we will see what gains/losses im gonna see because its not as if i can just put 2bar through it as my std engine will go pop (although matty did )

My fully decatted one wasnt boomy on low revs or idle, but it did get a bit boomy at 3000rpm on the motorway. It was very deep and warbly at low revs but not loud in a chavvy way. chavvy exhausts are just like a normal exhaust tone but with 5x more bass. There is a difference between "deep" and "bassy" - It's quite hard to make a 20VT sound chavvy!

And his engine eventually died, I believe

A engine with standard pistons and rods cannot take 2 bar for any length of time

My needs from my next turbo will be self-contradictory - I need more top end boost with no more lag than I currently have - tall order

The easiest way Nigel would be to simply change the turbine housing to say a 0.86 ousing, unless you already have one ?

This may add some lag, but you are possibly asking two things from your setup.

A larger bore exhaust will certainly help you keep top end, you may find a full 3" will do this without replacing the turbo.

I'd do this step first.

I still have to swap out the 0.64 turbine om my GT3 something ( listed as a MD999 ), as it has NO lag bottom end, but just can't hold more than 1 bar at top end which is costing me tons of power

I cannot even crack the 400hp barrier, and I'm exceptionally lazy !

Luke - if you go for a GT30 then plan for the engine to go in the near future on the standard internals IMO. The only way that I would go for a GT30 would be if I had forged bits ready to go in the car, and the money for an engine build ready and waiting......up to you of course.

With the boost that you have been running I would be suprised if your engine is not running lowish compression - do you know the actual compression figures at the moment?

With my new twin pipe exhaust, I left out one of the rear silencers, this has made the car boomy and chavy at low revs (almost blown exahust sound), but surprisingly on the move and at high speed it just sounds gorgeous, combine nicely with induction roar and turbo noise

Still going to get silenser put back in, at least 55:45 in favour of this move.

Taz - I have the 0.64 housing, which is clearly a restriction when closing in on 400bhp.

However, I'm right on the limits of my tolerance for lag - it starts to spool up soon after 3,000 and is pulling hard by 3,750. I'm not sure I could put up with it spooling another 500rpm later

With the current turbo, I have to get over 100mph in top gear before it spools, meaning that a clearing of outside-lane motorway traffic often involves three downshifts to make any decent progress

Crying out for a sequential twin-turbo setup, I reckon

Or a 2.4 conversion...

actually - forget sequential - time for an enquiry to Turbo Dynamics about a VGT turbo

i had full boost on the gt3071r at 4000rpm and that is with a standard head and a v band adapter

Nigel, you're more than welcome to have a trial in mine with the 3071R with similar mods to you. I'll 99% be at the midlands tunnel run which is near you!

Gonna do a compression test tomoz and check if any change since last test done. should give me good idea of how engine is wearing since been running 1.4bar daily

as for the gt30 being too much for standard internals I know but hey it basically has worked out im swapping mine for a bigger better turbo soo thats why im doing it soo in future when i want more i dont have massive cost of a turbo too buy. as well as forged items

go for it luke i did mate should be reliable at 1.4bar for a while and you will make good power,should see about 370-380bhp with bigger injectors

thing is i dont hardly ever drive on boost believe it or not so say i got it mapped at 1.4bar and it produced 380bhp (for instance) i dont drive the coupe hard at all so the 380bhp would most of the time be wasted as only now and again in teh right conditions eg (slip road onto dual carriage way/motorway) i open her up just to get me to 70mph abit quicker

not like im gonna be going round a track constantly giving it grief.

a little blip now and again should see reliability for quite a while

Suprised no one has done this yet.

Drove a R5 GTT running 1.5 bar with a VGT / VNT setup a couple of years ago. Great fun.

JohnS looked at a twin scroll turbo a while back, and gave up on the idea as there was a lot involved with the work...I'm sure that he looked at VNT options too.

I guess it comes down to how much money you are prepared to throw at the car!