Right then.....after being quiet for a while i'm back!

After nearly suffering a fatal fracture of the exhaust housing on my Owens turbo and them now telling me it's mullered I have the dilemma of spending a good £1500 for a new one (parts only!) or spending a few grand and go absolutely f'kin mental (even more so) and build a 500+bhp monster!

The ground work has already been completed courtesy of JabbaSport by building me a bullet proof engine , this is what I have set my sights on so far to add to my current list of mods:

• Garrett GT3076R or GT3582R turbo
  
• Tial 38mm external wastegate
  
• Equal length tubular manifold (ceramic coated)
  
• Custom 3" downpipe
  
• Various enlarged boost hoses
  
• 750cc injectors
  
• Custom 4" (CAI) inlet
  

I know this will be considered crazy, but I want to build the ultimate 1.9t vRS!

Steve

if the engine's already built for it, it'd be rude not to

Well get on with it and keep us informed, should be sweet when finished

Sounds an amazing project, can a 1.9 litre engine flow enough exhaust gas to move a bloody great turbo like that?

when you have finished and you get bored you can sell it to me 210bhp in my daily drive is loads of fun, I can only imagine what this will be like to drive ;-)

good luck steve lovely motor

Edited 23 July, 201114 yr by missingmyvrs

Sounds an amazing project, can a 1.9 litre engine flow enough exhaust gas to move a bloody great turbo like that?

The GT3076R should be achievable without any issues with my large port AGU head and RMR inlet manifold, the GT3582R might be a little too laggy, but could make nearer 550/600bhp when on boost...

Time will tell!

Steve

Earth calling Steve ..............................

I can't fault you

Not being rude but is it worth it? I doubt you could tell The difference between 400 and 500 odd horsepower tbh, after a certain amount it all just becomes irrelevant. Plus upping the power will make it cost even more to run

I'm not trying to be smug or trying to ruin your fun, I'm always the first person to modify anything with an engine but I'm just trying to add a constructive 'is it worth it'

bigger turbo, higher boost threshold - you could end up with < 2,000rpm-age of usage engine boost :S

The O2M is only rated to 350nm of torque

Why not see if you can get the same HP but with lower boost threshold - that would be worthy challenge

all you have to consider is yes on a dyno you might hit huge power but by doing what your doing will you make the car un driveable on the road!!!

all depends on what you want from it, if its about making high figures then go for it imo if its about making the car faster on road then i think its a backwards step as your car is around the best figures currently.

steve you have to also now start to think about what can and cant cope with xxx power as its a big leap to the next level.

as for doing it to make the best 1.9 octy imo you have already done that with the silver bullet already.

good luck with whatever you choose awesome car ;-)

bigger turbo, higher boost threshold - you could end up with < 2,000rpm-age of usage engine boost :S

The O2M is only rated to 350nm of torque

Why not see if you can get the same HP but with lower boost threshold - that would be worthy challenge

all you have to consider is yes on a dyno you might hit huge power but by doing what your doing will you make the car un driveable on the road!!!

all depends on what you want from it, if its about making high figures then go for it imo if its about making the car faster on road then i think its a backwards step as your car is around the best figures currently.

steve you have to also now start to think about what can and cant cope with xxx power as its a big leap to the next level.

as for doing it to make the best 1.9 octy imo you have already done that with the silver bullet already.

good luck with whatever you choose awesome car ;-)

I'm not being driven by sky high figures, the only reason I'm doing this now is because of the Owens turbo failure, and now I've realised the short comings of this particular turbo/exhaust housing/manifold package, (great if you want up to 400bhp-can't stress that enough!) but it will pain me to spend that sort of money on something that will be the same (performance wise) and something that will fail again trying to run what I want again - if that makes sense. (£1500 every 9k miles/18months, or 3k & a bit and fingers crossed all will be ok - I'm happy to take that risk!)

After much research I WONT be having the bigger GT3582 as this will be far too laggy on a 1.9, so the GT3076 will be the weapon of choice - considerably cheaper than the Owens replacement I may add too!

Heat is the major issue with my current setup so this is why I will be opting for an equal length tubular manifold with the Zirconium Ceramic Plasma sprayed coating to further help reduce temps, and by going to an external wastegate setup this also will release more power and make it more driveable over my current internal wastegate setup.

This round of modifications is more about making it efficient and reliable than it is ultimate power - however I do want to get the best of both worlds in this respect!

I will be using this every day for work, so I do need it to be driveable; I haven't lost sight of that. Any small turbocharged engine running big power will have lag, I am hoping that due to all of the additional modifications I will be having meaningful boost from 3500 and full boost from low 4000's, giving me a good 4000rpm range. Exactly the same as what I currently have (had) with my Owens.

I have two spare 02M's ready to be worked on in case I fudge my current one, it has stood up to everything well enough..... So far! That (transmission) will be the only weak link with my car, everything else (chassis/brakes) is setup well and should cope without any extra horses under the bonnet.

Steve

nice manifold - is that really going fit ?

Recon youshould consider boring and stroking, if you're that serious about going usable big power with low boost threshold

The idea has been knawing away at the back of my mind for a while now. The TFSI crank is suppose to give noticeable amount of torque.

But for the cost of doing that, a turbo'ed 3.2 V6 could be fitted, but those are 30kg heavier ( but 500 - 550 bhp :p )

on 2nd thoughts you could probably get away with just a stroker kit, as you boost thresholds are pretty good, and would save big $

Edited 25 July, 201114 yr by snow_muncher

how about a billet version of the gt30??? that will lower the lag and increase power some really god results on the scooby with it.

whatever you do steve you have a great car and modded in the correct way imo

F**K IT......!!!!!

After now having the final drafts of what this was going to cost I've pulled the plug on it. The final total was coming closer to 6k once VAT etc. was added over the earlier quote of 3.5k! :'( As i'm selling my house to move to a bigger one I really can't justify that price!

So back to the drawing board.

Owens are now supplying me with a brand new Garrett GT3076R with the HTA billet turbine (which will improve spool up by roughly 500rpm!), the uprated WRC bearing cartridge and additional heat shielding built into it. I also will be having the 'new and improved' exhaust housing which is made with a different alloy mix to the one that originally failed on mine, so in theory they say it shouldn't fail again...

This is costing well under 2k and I can fit it all back myself, which drastically reduces waiting times and costs too.

Once fitted back on I will be focusing my attention on looking at ways of ducting air round the back of the engine to keep things running a little cooler.....

Thought it was all too good to be true.... The joys of running modified cars ay.

Steve

i wouldnt be disappointed imo the power level your at and now with billet will make a much much better car than an undrivable 500bhp figure hunter!!!

as for ducting could you not get some louvers cut into the bonnet and some 3 inch air duct from each side run from under the car???

also what about a turbo blanket ???

imo 500rpm lower boost threshold is a better upgrade than another 100bhp

Been planning myself to build a little ducting network for a while now.

My basic plan was convert the lower dumper grills to scoops, and duct the air onto the brakes aka the photo below

A branchline would then take air along the same route as the FMIC piping, to vent the upside of the manifold and turbo

A few vents under the rear of the bonnet/sill tray area maybe

Car builder solution do ducting an piping

Im really looking fwd to seeing what this billet garrett drives like, the reports ive seen/read have all been excellent!

I will run some convoluted pipes from both of the side vents in the bumper, but as said it needs something from the bonnet.... That will require a bit of research I think.

Owens advised against the blanket. They are only good for turbos that are likely to be cought in a draft once engine is off - evos for example as they're mounted at front of engine. These sort can cool down too quick and fracture.

I just hope I don't get the same problem again....

Steve

i think louvers in the top of the bonnet will be needed facing away from the front.

used to remove heat not supply forced air if that makes sense

duct from the underneath like snowmunchers says and then louvers to dispell the heat.

gt30r billet is amazing in comparison to a standard gt30r on a 2.1 bottom end scooby was seeing up to 800rpm sooner and hold more power for longer.