Turbo Conversion!!

Author
Discussion

Ryi

Original Poster:

3 posts

187 months

Saturday 18th October 2008
quotequote all
Hi lim a new member and im wanting to put a turbo on my clio 1.2, im looking at a punto GT turbo to install as its a 1.4 turbo and near to my engine size, im just curious to know if this would be possible ??? and also if i can use a dump valve with a standard turbo?? replies would be great i would also wanna know how the setup would go about??? thanks guys

_Lee_

7,520 posts

244 months

Saturday 18th October 2008
quotequote all
Ryi said:
Hi lim a new member and im wanting to put a turbo on my clio 1.2, im looking at a punto GT turbo to install as its a 1.4 turbo and near to my engine size, im just curious to know if this would be possible ??? and also if i can use a dump valve with a standard turbo?? replies would be great i would also wanna know how the setup would go about??? thanks guys
Best advice, don't bother.

The cost of the install and the insurance hike wont be worth it, especially as by the time you have done the conversation your car will probably be worth about the same but you will have spent several grand on something that really isn't worth it.

Save your money and when you can afford something with a bit more performance buy it.


Baffled Spoon

5,250 posts

195 months

Saturday 18th October 2008
quotequote all
To answer your question, anything is possible but just because it is possible doesn't mean you should do it.

A turbo conversion on a naturally aspirated car would cost a lot and you cannot just plonk a turbo in without having to strengthen the internals. Why not just save up and get a bigger engined car at a later date? You would probably be better off getting a clio 182 when you can.

Edited by Baffled Spoon on Saturday 18th October 18:20

sniff diesel

13,107 posts

213 months

Saturday 18th October 2008
quotequote all

Marf

22,907 posts

242 months

Saturday 18th October 2008
quotequote all
Ryi said:
Hi lim a new member and im wanting to put a turbo on my clio 1.2, im looking at a punto GT turbo to install as its a 1.4 turbo and near to my engine size, im just curious to know if this would be possible ??? and also if i can use a dump valve with a standard turbo?? replies would be great i would also wanna know how the setup would go about??? thanks guys
Just buy a Punto GT Turbo.

Ryi

Original Poster:

3 posts

187 months

Saturday 18th October 2008
quotequote all
i understand but i wouldnt be paying for the conversion because my dad is a mechanic so we would be doing it but i would just be paying for the parts i.e the punto turbo, intercooler n new manifold to suit so it shouldnt cost that much it just finding the parts cheat what u think, n i also have changed the car allot in looks so wantin to keep it a couple yrs before i can afford bigger, i got scorpion cat back exghaust n body kit so wantin to keep for a while but wantin more power what can you recomend aswel as the turbo project im wanting to carry out?? thnks guys

tomTVR

6,909 posts

242 months

Saturday 18th October 2008
quotequote all
Marf said:
Ryi said:
Hi lim a new member and im wanting to put a turbo on my clio 1.2, im looking at a punto GT turbo to install as its a 1.4 turbo and near to my engine size, im just curious to know if this would be possible ??? and also if i can use a dump valve with a standard turbo?? replies would be great i would also wanna know how the setup would go about??? thanks guys
Just buy a Punto GT Turbo.
Or a Punto HGT - 130bhp and you can buy the whole car for a grand.

Why would anyone want to turbo a 1.2 Clio? This is a wind up surely?

Marf

22,907 posts

242 months

Saturday 18th October 2008
quotequote all
Ryi said:
i understand but i wouldnt be paying for the conversion because my dad is a mechanic so we would be doing it but i would just be paying for the parts i.e the punto turbo, intercooler n new manifold to suit so it shouldnt cost that much it just finding the parts cheat what u think, n i also have changed the car allot in looks so wantin to keep it a couple yrs before i can afford bigger, i got scorpion cat back exghaust n body kit so wantin to keep for a while but wantin more power what can you recomend aswel as the turbo project im wanting to carry out?? thnks guys
How much is the insurance hike?

I really dont think its worth it, for all the hassle involved you may as well just buy a turbocharged car to begin with.

_Lee_

7,520 posts

244 months

Saturday 18th October 2008
quotequote all
Ryi said:
i understand but i wouldnt be paying for the conversion because my dad is a mechanic so we would be doing it but i would just be paying for the parts i.e the punto turbo, intercooler n new manifold to suit so it shouldnt cost that much it just finding the parts cheat what u think, n i also have changed the car allot in looks so wantin to keep it a couple yrs before i can afford bigger, i got scorpion cat back exghaust n body kit so wantin to keep for a while but wantin more power what can you recomend aswel as the turbo project im wanting to carry out?? thnks guys
Forget the 1.2 engine then as said above.

Stick a decent engine in the car, I should imagine a 1.2 clio won't cope well with a turbo and may just blow itself to pieces.

If keeping the car is a must, then the engine swap is the only logical way to go.

crofty1984

15,873 posts

205 months

Saturday 18th October 2008
quotequote all
Ryi said:
Hi lim a new member and im wanting to put a turbo on my clio 1.2, im looking at a punto GT turbo to install as its a 1.4 turbo and near to my engine size, im just curious to know if this would be possible ??? and also if i can use a dump valve with a standard turbo?? replies would be great i would also wanna know how the setup would go about??? thanks guys
I don't want to be rude, welcome to the forums and all that, and I'm glad that you're trying to make you car more interesting performance-wise, so good for you. But I'd be tempted to side with the others unless you really know what you're doing. Maybe hack round for a couple of years in your standard car, save up, then buy something that may be more suited from the factory (how much are 200sx's now?)

At a rough guess, on one of those engines all else being equal, on stock internals you're limited to to about 7psi. that would be equivalent of a 50% bigger engine, so if you're determined to do it, why not plonk a 1.8 engine in? It would probably be easier. I can really recommend getting hold of a copy or ten of a magazine called "Practical performance car" it goes into the kind of home improvements you're talking about. if it doesn't help (though it's recently done a series on home-turboing) it's a good read anyway. No I don't work for them!

The bit I've bolded is what's given me some concern that you may not fully understand the systems involved. Though you've come here for information and advice, which is laudable. So I'll tell you. And in 6-7 minutes, someone will come along to tell me I'm wrong!
An awfully large amount of petrol turbo'd cars have a dump valve as standard. It's a relatively common feature. However many are of a recirculating nature, so don't give as prominent a "pssh" sound as some like. Without one the turbo would stall when you shut off the throttle. The compressor is sending all this high-pressure air through the throttle to the engine, but suddenly, the throttle's closed! (There's some natural delay from your foot being let off the accelerator, to the engine slowing down, to the exhaust gasses slowing down the turbine blades. This is not "lag" as commonly used, but it is related) It has nowhere to go, so it backs up to the turbo, and can stop the blades spinning. So all that excess pressurised air is "dumped" to the atmosphere to stop this happening.
There's also something called a "wastegate"on the exhaust side that is what controls how much you pressurise the intake air. So don't fall into the common trap of thinking they're the same thing.

Do stick around though. And good luck whatever you do smile

Phew! I need to sit down! Oh, I am. Well, I need to go to the pub then. Se y'all later.

EDIT: Happy now? You pedantic buggers!

-goes off muttering

Edited by crofty1984 on Saturday 18th October 19:14

Marf

22,907 posts

242 months

Saturday 18th October 2008
quotequote all
crofty1984 said:
So I'll tell you. And in 6-7 minutes, someone will come along to tell me I'm wrong!
All petrol turbo'd cars have a dump valve as standard.
You're wrong. tongue out

Do I get a prize for beating the 6-7 minute estimate ?

crofty1984

15,873 posts

205 months

Saturday 18th October 2008
quotequote all
Marf said:
crofty1984 said:
So I'll tell you. And in 6-7 minutes, someone will come along to tell me I'm wrong!
All petrol turbo'd cars have a dump valve as standard.
You're wrong. tongue out

Do I get a prize for beating the 6-7 minute estimate ?
Oh go on then. But you have to say why I'm wrong. Then you get your prize.

Marf

22,907 posts

242 months

Saturday 18th October 2008
quotequote all
crofty1984 said:
Marf said:
crofty1984 said:
So I'll tell you. And in 6-7 minutes, someone will come along to tell me I'm wrong!
All petrol turbo'd cars have a dump valve as standard.
You're wrong. tongue out

Do I get a prize for beating the 6-7 minute estimate ?
Oh go on then. But you have to say why I'm wrong. Then you get your prize.
Early turbo cars didnt come with dump valves, examples off the top of my head, Charade GTti, Uno Turbo, Renault 5 GT Turbo, Renault 21 Turbo, Escort RS Turbo etc etc.

As for why, who knows, cost reasons maybe? Most modern OEM BOVs are recirculating and dont vent to atmosphere.

peterguk V6 KWK

2,615 posts

218 months

Saturday 18th October 2008
quotequote all
crofty1984 said:
All petrol turbo'd cars have a dump valve as standard.
You've obviously never lifted the rear clam of a Noble rolleyes

chris1roll

1,698 posts

245 months

Saturday 18th October 2008
quotequote all
Wouldn't you be better off going with the volvo 480 1.7 turbo lump, that being a relatively straightforward conversion being basically a renault engine. Plus you can pick them up for pennies, then if you want to, spend a couple of hundred on parts to recon the engine and then slot it in.
Sure, these days there are much better modern engines about, but its a highly effective _low cost_ option.

You might want to stiffen the front of the clio up though, I know of one with the conversion and then the 175bhp modified ECU in it that when on boost you can see the panel gaps between the wings and the bonnet change!


I don't agree with those that say don't bother, I mean at least you aren't sticking loads of fibreglass all over it (are you?) however the reasons they give for saying don't bother are correct, mainly:

It will most likely devalue your car.
It will cost "some" money to do.
You will still only have a clio at the end.

If you are going to be doing it yourself, and you want the experience working on cars and engines doing such things, we've all got to start somewhere to learn, and it would be a good project. And then theres the satisfaction of turning the key on a car you have fitted the engine to yourself, so go for it. smile


Just re-read and realise you want to put a turbo on the 1.2 engine...err, I wouldn't bother with that either, TBH, but still.


Edited by chris1roll on Saturday 18th October 18:59

crofty1984

15,873 posts

205 months

Saturday 18th October 2008
quotequote all
Marf said:
crofty1984 said:
Marf said:
crofty1984 said:
So I'll tell you. And in 6-7 minutes, someone will come along to tell me I'm wrong!
All petrol turbo'd cars have a dump valve as standard.
You're wrong. tongue out

Do I get a prize for beating the 6-7 minute estimate ?
Oh go on then. But you have to say why I'm wrong. Then you get your prize.
Early turbo cars didnt come with dump valves, examples off the top of my head, Charade GTti, Uno Turbo, Renault 5 GT Turbo, Renault 21 Turbo, Escort RS Turbo etc etc.

As for why, who knows, cost reasons maybe? Most modern OEM BOVs are recirculating and dont vent to atmosphere.
Good, now come here pretty boy, I'm gonna reward you personal this time; now you see why they call me the donkey!

crofty1984

15,873 posts

205 months

Saturday 18th October 2008
quotequote all
peterguk V6 KWK said:
crofty1984 said:
All petrol turbo'd cars have a dump valve as standard.
You've obviously never lifted the rear clam of a Noble rolleyes
That's true. grr, as soon as I'd written it I thought I should go back and edit. You don't get the prize though, that's marf's.

tomTVR

6,909 posts

242 months

Saturday 18th October 2008
quotequote all
crofty1984 said:
Good, now come here pretty boy, I'm gonna reward you personal this time; now you see why they call me the donkey!
Because you're an ass?

bimsb6

8,045 posts

222 months

Saturday 18th October 2008
quotequote all
Ryi said:
my dad is a mechanic
why don't you ask him then ?

peterguk V6 KWK

2,615 posts

218 months

Saturday 18th October 2008
quotequote all
crofty1984 said:
peterguk V6 KWK said:
crofty1984 said:
All petrol turbo'd cars have a dump valve as standard.
You've obviously never lifted the rear clam of a Noble rolleyes
You don't get the prize though, that's marf's.
tongue out

wink