2.0L V6 TB without turbo? is it possible? - Alfa Romeo Forum
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2.0L V6 TB without turbo? is it possible?

well, i know this sounds silly, but is it possible to put this engine (or any other turbo engine) working right without the turbo? with less power of course...
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Yes it is!
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Yes it is!
nice! is that an easy job? how much power loss after for this engine? do you get some return on the mpg? just curious...
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I would guess it is not as simple as fitting different manifolds and removing the turbo.

You will need different pistons for a start (turbo cars have lower compression ratios)
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Presumably you've sourced a decent V6 Turbo engine? Maybe we could engineer a swap?!
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Ofcourse it's possible, but why do it, when you have a 2.0 TS?

I assume that because of the v6 engine?
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You will need different pistons for a start (turbo cars have lower compression ratios)
And IMHO good work in the inlet, different camshafts and definitely a remap. Turbo engines do not need such a finely tuned inlet as N/A ones and the ignition/cam timing is different, with less ignition advance and valve overlap.
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Ofcourse it's possible, but why do it, when you have a 2.0 TS?

I assume that because of the v6 engine?
yes. a beautiful v6 engine with the same mpg as the 2.0 ts and the same power, would be great! and without the turbo issues...
but i’m figuring that’s a hell of a job!
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Remember it is only a 12-valve engine.

Can't see the point myself.
The 2.0v6 Turbo only exists as a lower taxed alternative to the 3.0V6 in markets that taxed heavily over 2L.
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Quote:
Originally Posted by alfizta View Post
yes. a beautiful v6 engine with the same mpg as the 2.0 ts and the same power, would be great! and without the turbo issues...
but iím figuring thatís a hell of a job!
It would never have the same mpg then a TS

The best alternative is 2.5 24v v6...
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Originally Posted by alan Q4+33 View Post
It would never have the same mpg then a TS

The best alternative is 2.5 24v v6...
IMO The best alternative is the 3.0 24V V6

Trouble is they are much more expensive than the 2.5 version due to being rarer.
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Quote:
Originally Posted by alan Q4+33 View Post
It would never have the same mpg then a TS

The best alternative is 2.5 24v v6...
there are no 2.5 L GTVs...
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Originally Posted by alfizta View Post
there are no 2.5 L GTVs...
Correct.
But that is the first time you have mentioned a GTV...
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In that case selling it and buying a 3.0 GTv is the obvious solution..

If you are modifying a GTV Turbo to get cheaper insurance, then I doubt a 2.0 V6 Non turbo would be much cheaper.

You will have to have a specialist policy for a start as it is a non standard car.
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oh, well...
the point was, if one day i get to be insane enough to buy a v6 tb, would i have the chance to regret myself by tuning it down enough to afford the driving?...
i guess when the time comes, it will have to be a twiny
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To be honest removing the turbo probably wouldn't save much fuel.

For example, the non Turbo Fiat Coupe 20V does a similar MPG to the turbo version.

Also if you Look at the Alfa Mito, the non-turbo versions are not much more economical than the turbo versions.


IMO your best bet is to buy a TB, keep the turbo but fit an electronic boost controller. That way you can turn down maximum boost when you are in fuel saving mode.

A very light pressure turbo can actually be more economical than a non turbo. Because the turbo assists in filling the cylinders with air, and reduces the pumping losses by a large degree.

Giulietta 2.0JTDm (170)
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Originally Posted by symon View Post
Also if you Look at the Alfa Mito, the non-turbo versions are not much more economical than the turbo versions.
i noticed that. doesn't make much sense buying a non turbo MiTo, does it? unless you are buying a much cheaper car...
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another thing i can’t understand. the v6 turbo is actually heavier than the 3.0 L v6 version.
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Originally Posted by alfizta View Post
another thing i canít understand. the v6 turbo is actually heavier than the 3.0 L v6 version.
just because it is a smaller capacity, that doesn't make the engine any smaller.
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Quote:
Originally Posted by alfizta View Post
another thing i canít understand. the v6 turbo is actually heavier than the 3.0 L v6 version.
Well if the bores are smaller, the liners will have more metal on them so the engine will weigh more.

Then of course you have the weight of the turbo installation.
Pipework, turbo, intercooler, heavier manifolds etc..
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