Improving the loba hybrid.....think K04-64

[lucifer666]

My loba is currently at turbo dynamics getting staggered piston rings to stop the poorley designed oil seals on these turbos leaking oil past. There will be porting of the manifold to overcome the misfiring at boost higher than 1.65 bar problem that these cars suffer from. Also I am having the compressor side of the loba upgraded to a KO4-64 sized wheel, which is a custom billet turbo dynamics designed wheel. Its roughly the same size as the 2.0tfsi compressor wheel but I am keeping the standard housing so spool should still be good.

Things are coming along slowly, hoping to hit the 300bhp mark by febuary

 

[Big-Pete]

should of just gone Gt28.

just sayin.

i know there $$ but still

 

[lucifer666]

Loba wouldn't refund my money, would have gone gtx2860r then but it would have been slower to spool than this option. And this car has a sweet spot of 270-300bhp, any more than that and your pushing your power away

 

[Sparkly]

lucifer, have you got a link to a build thread for this car, it sounds potentially epic if you overcome the misfire issue.

Plus I am keen to hear what wheels and tyres you run etc in order to try and lay that kind of power down. DSG tweaks etc

 

[lucifer666]

My thread is not up to date, I have been very busy with work etc, have a demanding job..... I will get around to getting it sorted this holidays.

 

[Sparkly]

Get it done, would love to see a 1.4 twin charger hit 300bhp

 

[Big-Pete]

My thread is not up to date, I have been very busy with work etc, have a demanding job..... I will get around to getting it sorted this holidays.

lies,

get it done lad.


also, the gt28 would make the same power with less boost lad. shame that loba arnt refunding you tho

 

[lucifer666]

Can't justify, forking out on another turbo setup. It would require external wastegate, and blow off valve etc. Then would have to get a custom manifold. Looking at 2k all up

 

[Stevoz03]

Sounds good lucifer! So all the misfiring was down to a restrictive exhaust mani? Looks like you'll be hitting some high figures. When do u think it will be ready?

 

[lucifer666]

Misfiring is down to the exhaust ports in the engine, which I didn't know at the time of rebuilding the engine. The turbo manifold is just as restrictive so makes things worse. Ideally I would get a custom manifold but would be cheaper to buy a complete different turbo.

If I can get 300bhp out of this turbo then it's been worthwhile, the advantage of the setup is it uses the oem recirculation valve and other bits and doesn't compromise spool because the compressor has stayed the same. And with the most suitable turbo out there being the gtx2860r there's that temptation of spoiling the car by tuning it to the max making it more laggy and a mass of wheelspin. 300bhp will be the limit.

 

[Sparkly]

Couldn't agree more, 300bhp will be a mighty task for the drive train, chassis and tyres to apply to the road. Oh yeah and brutally quick.

Nice to see a car hitting an advanced state of tune, because of oil issues and since the main Fabia vRS failed to achieve a full fat stage 3 due to misfires the amount of guys tuning the 1.4tsi in Skoda format is much reduced.

 

[Sparkly]

Out of interest who do you have working on your turbo?

 

[lucifer666]

Turbo dynamics, should be hearing from them this week, although Im not in a rush, told them to take their time. Will be done by Xmas though. Will be then getting rid of my second loba that's fitted to the car now. Recommend HIGHLY to anyone looking to buy it that they dont use it with decat, if they do make sure it's less than 2.5" because the oil seals are poo on these turbos. Im yet to test turbo dynamics staggered piston ring setup to stop oil leakage, but that's a proven way of getting around the oem turbo design which is deliberlately designed to have the back pressure of a cat

 

[Sparkly]

Very interesting stuff mate, again, comend the work your doing pushing the 1.4 Twinnie. I may well have an interest in that turbo.

I'm currently just on Stage 1 APR with some handling mods but after Christmas will be looking at an APR intercooler and had thought about going full Milltek with Sports Cat and then map to Stage 2. Interesting to hear that you don't think Decat suits.

Look forward to seeing what Turbo dynamics come up with for you.

 

[lucifer666]

We'll it's done, pics to come. Not really much to show tbh as you can't see the compressor wheel properly without taking apart and the piston rings are internal too, you can see a bit of porting that's been done on the manifold. Fingers crossed for 300bhp.

I'm the end to get the wheel to fit they had to replace the center section of the compressor housing and put a thicker bit of pipe in so there's more material, then machine it to take the larger wheel.
The wheel itself is a custom turbo dynamics ko4 upgrade wheel, which has extended tips and is billett. It's about 0.2mm larger than the ko4 oem wheel.

 

[Big-Pete]

looks good lad,

hows the gearbox handeling the power?

 

[lucifer666]

Fine, torque limit has been raised so no issues at all

 

[lucifer666]

Just a little update, I have purchased an oil restrictor bolt to try on my current turbo to see if it solves the smoking. On the vxr astra, they have the same problem......decat hybrid turbo cars smoking. It's down to high oil pressure through the turbo, it's within the manufacturing limits for the engine but way over what the turbo seals are designed for. It's made much worse after reduction in back pressure by removing the cat and putting larger bore downpipe on it.

Turbos are tested up to 60psi, on the astra the oil pressure can reach 80psi. The oil restrictor limits the pressurethrough turbo to 40psi. The turbo we have needs a minimum of 20psi to lube it up enough so it's fine. Advantage is that by decreasing the oil pressure through the turbo, you increase the oil pressurethrough the engine which is a good thing. The amount of people consuming oil may even be just down to the turbo and not to do with the pistons. I'm going to try this mod and if it works, after some logging of oil pressure, will recommend to others. Just wait out for my testing

 

[Stevoz03]

How you getting on with this Lucifer? Any updates?