how to turbo a 2001 2.0L Golf

[Adzismad2]

Here's a fool proof 2-step guide to make a your mk 4 2.0 go faster.
1. Sell it.
2. Buy a GTI.

Hope that helps.

LOL.

I think the GTI might be his best option.

[WhO]

Sell your car and buy a GTI. A bolt on Turbo setup will likely nett you with a less reliable, less safe, more expensive and less valueable (resale wise) car than if you spent the same money + the sale price of your car on a GTI.

Quoted for the truth!

There is an old saying
"Don't try to build what you can buy"

[Bug_racer]

Im gonna go against some of the things said here .
If your going for 150kw atws or less then by all means get a gti , it will be far cheaper to do it that way .
But if you want more then its not worth changing to a gti .

Biggest issue with the mk4 gti Australia gets is there is no map sensor hooked up so your limited by whatever the MAF can max out at . You'll find the most power you can get out of a mk4 gti will be one fitted with a VR6 MAF . The biggest turbo you can safely use then while using the MAF inputs is a gt28rs , and even then you need to find a tuner who could tune it (long and costly as there is no off the shelf tune AFAIK) . So basically going gt2871r or bigger on either the mk4 2.0 or 1.8t your going to need stand alone which most run a map sensor .

The 1.8t engine has a lot more headflow compared to the 2.0 , but if you start going past the 250kw atws mark you'll need to start upgrading cams/cam valves , valve springs etc etc . The 2.0l 8v has 1 cam , 8 v and 8 valve springs . The 1.8t has 2 cams , 20 valves , 20 valve springs etc . The cost to rebuild a 1.8t head will far outweigh the 2.0 . The 2.0 is also a larger capacity to begin with so youd need to buy a stroker crank for the 1.8t to get it to 2.0l . Then you will need to clearance the block etc . Even smaller things like the timing belt the 1.8t is usually converted to the non-hydraulic set up due to the high rates of failure of hydraulic units at higher rpm/load . So by the time you build the engine to take big power it will cost less for the 2.0 than the 1.8t .

The gearbox in the 2.0l is pretty much the same as the 1.8t . The seats may be better in the gti but once you start getting decent power your gonna need a 4 point harness and proper bucket seats anyway . Same goes with brakes , 288mm brakes with 400hp+ just wont cut it so any advantage the gti had here no longer applies . I could go on but I dont have time .

In the real world yes the fastest fwd VW in the world is a 1.8t , but less than 0.01 seconds slower is a 2.0t :

YouTube - 16º festival força livre - saveiro viturro

YouTube - Arrancada Recorde FLD Sapinho 8s774

[WhO]

I think the question that really needs to be asked of the OP is how much money he wants to spend and how much power he's after. Of course there are possibilities with the 2.0L, after several years of ownership i turbocharged my first car, a 1.6L nissan pulsar with good results... however given the power vs cost ratio i would've been better off just buying a faster car in the first place. Comparing a High HP build I've also been down the road of modifying an already quick car (R32 GTR) and you could kind of compare that to my current build a VR6 Turbo. Both netted big power and the thing here was cost wise they came towards a similar ball park once chasing big power. However stock for stock the GTR was leaps and bounds ahead of the Bora.

Moral of the story if the OP is after a huge amount of power then there's no reason working with what he's got wouldn't be a bad idea, he's going to spend the money on either car to get the hp out of them. If he's not after big power though financially a far better option would be to sell and buy a GTI.

My 2c... either that or just dont do it lol, cars are a money pit!!!!!!!!!

[gavs]

Hang on Rob, I thought with your little current project, you would be encouraging this! I didn't see too many people saying "Who, don't be an idiot, just buy an R32" because you were doing it with a Bora 4Motion. And before anyone goes spastic about the "rarety of the Mk4 R32: Cars For Sale - carsales.com.au - carsales.com.au 1247 1252 1282 4294962746 4294962677 4294774536 4294950689

6 of them on car sales.

I really don't understand the people who get on this forum and their first comment when someone say they want to do this is "you're an idiot!, buy a GTI". I know of someone who is building a GTI beater out of a NA Mk4 but hasn't posted it, probably due to the sheer amount of flak he would cop from all of you! have you ever thought that someone might not actually want a GTI, maybe they like the 2.0 Golf instead?

Robert4, you know what? if you have the cash, I say go with it because as Bug-Racer has said, you would flog anyone with a Mk4 GTI with a chip in it if you do it right and you can laugh your ar*e off when you see the people who critisised dissapear in your mirror!

I'm glad I bought a polo and don't really hang around in this forum anymore, bar Rob's turbo 4 motion thread, everytime I go through the Mk4 section it depresses me with all the negativity....

[Coralon]

Old mate already bailed guys... he just wanted some help. Old sayings aside, not everyone wants a gti. To me gti means the same thing as having a huge wing on the back of a car that never goes faster than 150kph.

The best old saying... it will be built, not bought

[robert4]

sorry guys havent been on in a few days. been busy.
essentially it would be quicker than a gti. i dont really need a gti for all the "extras" i already have leather seats, and i can live with out a sunroof.
i am looking for performance. not so much the the label "GTI".
i know it would be easier to get a gti if i wanted turbo, but i want the satisfaction of building the 2.0 into a turbo, and just working on the engine and all that!
i dont care if people think its a stupid idea, i never asked for there opinion on that, i just asked for what i needed and approximate costs!

[robert4]

Old mate already bailed guys... he just wanted some help. Old sayings aside, not everyone wants a gti. To me gti means the same thing as having a huge wing on the back of a car that never goes faster than 150kph.

The best old saying... it will be built, not bought

enought said!

[Jmac]

Have to say im a bit disappointed with the way people have reacted to this one, its been like flies to a piece of dog poo. Give the guy a break. I know i would rather have a GTi granted but to be fair the question was "how to turbo a 2.0" not what do you think of my idea? cmon folks.There has been a few questionable things been asked and still do get asked on here and this is far from the worst.
Jmac

[Coralon]

Hey robert4, I have done a fair bit of research into doing this for my car as well so while others here (who for example) will have a much better idea of total costs you will be looking in the reigon of approx 10k to do a proper turbo build. You have many options from kits through to buy all the parts yourself. While the mk4 2.0 isnt a natively turboed engine you will be able to get parts to suit although they will be rarer and a lot will need to be imported, the joys of owning a european car.

You may be able to get away with it a bit cheaper but I say 10k to include things like suspension and brakes, exhaust etc. If your not a very handy person mechanically you could add another few grand for labour.

Here is a starting point for you to look at... bolt on mate
MK4 2.0L 8V Turbo Kits: CTS Turbo

[robert4]

thanks for that coralon. might have to start saving a bit if its gona be that much!haha
also another question....would the turbo be hidden behind the engine cover?
and all i really need is just the headers wouldnt i. i could just get the other parts myself?

[Coralon]

You could definately source all the parts individually, I just liked the kit so you could get an idea of the hardware required. Depending on the layout of the piping and intake etc it should be possible to put the engine cover back on but without a downfacing manifold it will be hard to hide a snail especially on a 2l

[robert4]

thats what i was thinking like just getting all the parts and really just needing the headers, gaskets ect.
wont the turbo be under the engine cover tho?

[YellowDieselGolf]

Have to say im a bit disappointed with the way people have reacted to this one, its been like flies to a piece of dog poo. Give the guy a break. I know i would rather have a GTi granted but to be fair the question was "how to turbo a 2.0" not what do you think of my idea? cmon folks.There has been a few questionable things been asked and still do get asked on here and this is far from the worst.
Jmac

Really? I thought this was a discussion board, where people you know . . . share their opinions. What's the point in asking for advise when you don't want to hear it?

If the OP's objective was easy or cheap, then everyone would be driving turboed 2.0s. Not only that, I don't think anyone has mentioned insurance or registration which is more complicated with an aftermarket turbo setup.

Sure. If the OP only wants 140kw (easy) and proven reliability then get a GTI and chip it. It'll also have climate control and slightly better interior, 288mm brakes and sports suspension too. I haven't looked lately, but I don't think there would be any issues finding a pre-chipped car for $12-15k.

If he wants modify the car despite the extra complications (and if you're going to replace the GTI brakes and suspension anyway), spend more time to install the turbo/test and tune, more $$$ and less resale value - turbo the 2.0. You'll end up with something unique, possibly more powerful - but at what cost?

[Coralon]

The turbo mounts onto the exhaust manifold so it is possible a heat shield could hide it but generally engine covers dont cover the exhaust. You can run a very low boost say 5-6psi on a non intercooled turbo system and slowly add more parts to it, this will reduce initial outlay but the most important thing is understanding the need to lower compression if you plan on running higher boost for more power, either with a head spacer or go old school and get low compression pistons but the dollars go up then.

There are many paths to a build, start slow and keep the boost low and you could get out of it real cheap, but if you want power then be prepared to open your wallet... a lot