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Atle Johannessen Profile
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166 2,5 V6 - Sportronic


Hello from Norway. I am new on this forum and i own a 2001 model 166 2,5. I owned this car for 7 years now, and that is because i like it so much. the car is in very good shape and entirely original and I use it just in the weekends now, since a good 166 is become a quite rare car in Norway.
There is a lot of knowlege on the 166 model on this forum and i have one emoticon. You might have tried this already?
Question: the 2,5 sportronic model is low on power on low rpm's. this is whats wrong with this model. Im planning to mount the 3,2 plenum chamber and 3,2 inletpipes and 3,2 mountbase for the 3,2 inletpipes. has anyone tried it? can i hope for better power on low rpm's? Best regards, Atle.

Laatst gewijzigd door Atle Johannessen, 9/Aug/2016, 11:00
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


Image
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Yuri166 Profile
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


 emoticon Alte,

Nice te see someone from Norway. A friend of mine moved to Norway two years ago, and till tht time he owned a 166 3.0, but he couldn't affort to import the car there. He now drives an Alfa GT.

Your car seems to be well looked after, and in good condition. I like it.

As for the power emoticon...
You mean this as an engine characteristic, and not as a problem I think. So it is running nicely. Because on the V6 it can happen that during a timing belt change, the timing is not properly adjusted, and the engine does not run as is should, and this i especially noticable in the low rpm range.

But if that is ok, than yes, the engine does miss a bit of low end torque. It is happier in hight revs. For a 2.5 it is an option to mount the 3.0 induction pipes and baseplates, or the 3.2 for that matter, but I think these are the same as for the 3.0, so that makes it a little bit easier to source. The onlt difference for the plenum is that on the 3.2 you can have the GTA titles casted in. But do you want that on a 2.5.

Now, when you have done the upgrade to the 3.0 or 3.2 induction pipes and baseplates, you can gain some power by chiptuning. In Holland and Belgium, the place to go is Squadra Tuning, but I don't know for Norway, or there are some possibilities to tune your car in Norway by Squadra. But it does make a difference.

There are two more upgrades that will improve the low end performance of your engine considderably. They do however require the remaoval of the gearbox. But should you be forced to change a clutch at some point, it is worth considdering. The first one, and most effective one, is replacing the flywheel and clutch assembly by one from a 147/156 GTA. They are so much lighter, that the engine accellerates much better, and will help the performance. Also, but that is planning way ahead, should you have to replace your clutch again, the GTA clutches are cheaper. In fact, also the flywheel is cheaper, and it is recomended to replace the dual mass flywheel together with the clutch anyway, but not strictly neccesary.

Last option, is the replacement of the differential in the gearbox by a Q2 diff. Which is a locked diff, and you don't loose traction when one tire is struggling for grip. It also does make a difference, and actually with the snow in Norway, could be interesting. But if it is a weekend driver, I don't know if it gets out of the box during the winter.



---
2000 Alfa 166 3.0 V6 24v Super †
1993 Alfa RZ (Project)
1994 Alfa 155 V6
2007 Alfa 159 SW 1.9 JTD 8v

Off Topic:
2008 Fiat 500 1.3 JTDm Pop
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


Considering the prices of a good 3.2V6 engine, I'm not sure if that is a good option.
Another point to research is if the automatic gearbox of a 2.5 fits to a 3.2. The gear ratio's are different at least. So probably you also need to replace the gearbox.

In that case, total costs (including man-hours) come close to that of a good used 3.2 V6 with the car still around it emoticon

---
Alfa Romeo 166 2.4JTD mei ‘02 - Blu Odissea
Alfa Romeo Spider S2 mei '79 - Nero
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


I would consider tuning as Yuri suggests. You don't have to import a car to Norway and it can be done during a three-days trip to the Netherlands, if an experienced tuner is not available in Norway.

Info on 2.5V6 tuning by Squadra Tuning

---
Alfa Romeo 166 2.4JTD mei ‘02 - Blu Odissea
Alfa Romeo Spider S2 mei '79 - Nero
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


Oops, didn't read that,... sportronic...
That means that the flywheel and clutch comment are not applicable... Sorry.

---
2000 Alfa 166 3.0 V6 24v Super †
1993 Alfa RZ (Project)
1994 Alfa 155 V6
2007 Alfa 159 SW 1.9 JTD 8v

Off Topic:
2008 Fiat 500 1.3 JTDm Pop
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Atle Johannessen Profile
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


Thank you very much for all answers. Yes its a sportronic.
I was thinking about the 166 - 3,2 plenumchamber. the trottle motor is placed more close to the inletpipes, and it is slitely larger, and delivers more efficient air flow, according to Autodelta. but i dont have the 3,2 bits anyway, and they are probably quite expensive. And if the payback is low, then i will go for just the inletpipes and baseplate.
If the general opinion on this subject is that a chip tuning is the easiest way to gain power, than i shall do just that. I was worried that that would interfear with the sportronic software settings. (motor and gearbox harmony). i will check out scuadra tuning. ive heard a lot about them, positve things. Thanks
suspension settings?
i have Eiback springs and original shocks. I am not quite satisfied.
Can you recommend the best settings for the 166? my wish is a more plesant ride on bumps, and still great cornering. todays setup make the car feels very heavy. the shocs seems too weak. Thanks a lot. (the know how on the 166s handling upgrade is absent i Norway) Best R, Atle
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


I have no experience my self, but I think the best shocks available at the moment are the Koni FSD. But it also depends how much you want to spend. The Original springs and shocks on the rear are rubbish indeed.

As for parts availability, I think there are quite some good dutch suppliers who are willing to ship to Norway. So if you need parts, just say so, we'll point you to the best suppliers over here if you want.

---
2000 Alfa 166 3.0 V6 24v Super †
1993 Alfa RZ (Project)
1994 Alfa 155 V6
2007 Alfa 159 SW 1.9 JTD 8v

Off Topic:
2008 Fiat 500 1.3 JTDm Pop
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Atle Johannessen Profile
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..


Thanks again, yes i would ask for Dutch Alfa spares suppliers, when its time to replace the shocks. and you are right about the rear. Thats the main problem.
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Re: 166 2,5 V6 - Sportronic - low power on low rpm..



Not better you by a Alfa Romeo 3.2 V6 TI,.?



Ciao Han Bella emoticon

---
Ciao Han

AR 166 2.5 V6 1999

Ergens op stalling

AR Spider 3.0 12V 1997
AR GTV 2.0 V6 Turbo
AR 164 2.0 TS
AR 90 2.5 V6 QO
AR 33 1.4 IE SW

Lancia HPE 2.0 IE Executive
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