Reliable forced induction??

[Phat VR6 3]

Hi, Its the big question again, Turbo or Supercharger,

But the question im asking is which is the most reliable. Basicly I want eather a turbo or rotex supercharger running at around 400bhp, but I want it to be reliable as possible, I keep hearing about VRTs breaking alot and that they are unsutable as daily drivers but knowone seems to go too deep into what brakes. The only thing menstioned is 3rd gear but im sure a r32 gearbox takes 600bhp and fits on a VR6 engine in a mk3 engine bay???? Which would sort that out turning a VRT into a reliable a daily driver. As far as I know the engines can last for years and miles and miles without going wrong if built properly and run in for the correct miles and that transmission lets it down. I never hear any problems with supercharged VR6s but im guessing thats because there arnt quite as powerfull or that they add power progresivly.

If people could tell me things thats gone wrong with there high powered VRTs i can make a desion too risk it or not, possible ways out ect.

The other option I would consider would be too run 350bhp from a charger and have a NOS kit to take it to 450bhp when I feel like it!!

[rodney 17]

OK well if you're going 300+ then turbo is the way forwards. THere are quite a few threads on here but basically it is as reliable as you spend! get a quality part and it will last!" Obvious I know!

As soon as you modify one componant it affects the next thing to it. So if you want a good reliable engine take your time and spend the money where needed. Make your internals good. Get the right Turbo for your needs with stand alone management and the car will run for ever. If you want big power then you will need to deal with the gears/transmission. you can of course have them treated.... just makes them brittle... it's not spinning the wheels its the oh I'm gonna grip moment that breaks the box.

As you say Chargers are a little more progressive and also TEND to come in higer up the range so... daily you don't use it so much.

There are a few guys on here with way decent power and it would be better to meet and have a chat with them at a pub or the likes I am sure they are available for a beer......

Good luck and I hope it helps a little

I hope it helps as a starter

P.S become premium member and write a thread as you go

[sparkz 0]

For reliability all day every day, supercharger...for all out power....turbo

[Lizard Racing 0]

How much money have you got to spend? Also are you going to be doing the work yourself?

[FishWick 21]

Reliability comes from the quality of the components and installation rather than the method of force feeding.

For 100% reliability, get a second car!

[Phat VR6 3]

How much money have you got to spend? Also are you going to be doing the work yourself?

Well it would be a loan joby tbh. With alot of people getting new cars on finance I thought I might aswell get a loan and slap a big turbo on my VR. Yep im going to do all the work myself!

Ive been thinking and im probaly going to go for a charger now. And try and get a reliable 270ish bhp. Reason im going for a charger is theres less work, Alot cheeper, Far less storys of them braking, And I love my dub to bits but I want a silly rapid car, At the end of the day my MK3 is about 1300ish kg, So it will need alot of bhp to make it fully rapid

Im going to keep my VR as a nice clean mint looking FAST all weather car and build my self a westfield (450kg) and slap a hyabusa turbo engine in it, 500bhp Revs to 14.000 or somthink and have that as my silly fast toy

[Lizard Racing 0]

Choose your charger carefully, if you go for a Vortech and get bored with 270-290bhp, which does happen, getting anymore will need a different approach and normally means starting over from scratch.

As Chris above has said dont cut corners on quality otherwise reliability will suffer.

[Phat VR6 3]

Choose your charger carefully' date=' if you go for a Vortech and get bored with 270-290bhp, which does happen, getting anymore will need a different approach and normally means starting over from scratch.

As Chris above has said dont cut corners on quality otherwise reliability will suffer.

[/quote']

Yeah I would probaly want to go for a set up like yours and run a rotex. Can you change the pullys on that to get different boost pressures? I take it you carn't treat it like a vortech and just run 8psi on a pretty mutch standard engine? Do you have to lower compression, rods, pistion ect? Have you had any bad luck atall? anythink gone bang!!!

[Lizard Racing 0]

If you want the option in the future to run more power you can witha Rotrex. The chargers alone though are £2000. The minimum I have seen run is 10PSI which was about 310bhp. You will need in addition to the kit either a charge/intercooler or water injection. You can run standard internals but the first thing to go will be the headgasket. I would also recommend ARP headstuds. You can buy 100,90,80,75,70 and even 68mm pulleys. However you can probably get anything machined for your needs. After 10-12PSI its forged pistons etc and loads more money.

The headgasket on mine started to leak after really pushing the car (24-25psi @7000+rpm) which I have now put right. It has been fine running 22 PSI for 1000 miles and probably would have been fine indefinately but me being me lol.

Apart from that I have had no problems what so ever. I only get around 12-13mpg in town and 18-20mpg on the motorway also.

[Phat VR6 3]

Sounds good,

So if your getting 370bhp at 4000 rpm what are you getting running 25psi @ 7000 rpm, Must be somthink silly like 650bhp if not more I like the sound of that. It does drink the fuel but who cares about that when you got 600bhp lol

Have you any idea of 0-60 times or 1/4 mile times

[6cylinder 0]

I can see ure engine blowing up!

Good luck with ure charger,smooth reliable power,the way forward. :-d

[FishWick 21]

It'll hold mechanically..... only a lack of fuel will destroy it ;-)