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you didn't replace the piston rings? How come?
Wrt oil temperature, why don't you try via OBD2 and see if it is the sensor or just the gauge.
 

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Discussion Starter #182 (Edited)
you didn't replace the piston rings? How come?
Wrt oil temperature, why don't you try via OBD2 and see if it is the sensor or just the gauge.
When I took the Brera engine apart, on the floor of my mate's barn, they did not look worn and there were no marks on the bores. Subsequently, Adam who took it out of his brothers Brera said the mileage was only in the 40 thousand region. When Scholar rebuilt the engine, they checked the rings for wear - measuring them up. And they as good as new. Plus there was very little wear on the PTFE? coating on the piston.

Secondly, I considered the fact that my 159 had been dyno - ed and was making better than spec wrt horsepower - better than unmodified engines, with less mileage. Mine has 112,000 - ish miles, so to make such power the rings/pistons can't be bad.

Thirdly, it my belief the pistons and rings are "Mahler", who have a fine reputation in development and production circles.

Fourthly, Alfa wanted £900 + for a set of rings and I am tired of sponsoring perpetual failures.

So the "Risk" was taken and I re - used the original rings. I shall be rebuilding the engine removed from my 159 and because she made good power levels, those rings too, will be reused. I do not expect to see any substantial wear on the bore either, so the engine will be sold with a balanced crankshaft, pistons and con rods, and a baffled/modified sump, with CLLS for those that are interested.

I can have your sump baffled if you want, at cost. I want to get my engine builder established as an Alfa specialist and am more than happy to put work their way - they did such a good job on my engine.

If you want to do this, I will have them modify my spare engine sump and we can exchange as and when. Otherwise, it will be modified and sold with the engine, when it is rebuilt.

It's not the gauge! That hasn't changed. But it may be the sensor. I expected a drop in temperature, but I need to confirm that it is the modifications which resulted in the temperature drop. So I have just ordered a K - Type thermocouple and hand held display module to determine the truth of what I believe.

Been out today in my toy! Awesome! Still not pushing too much. But God it is different. According to Scholar, she is running a little rich. But I will live with that for the time being.
 

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Discussion Starter #183
you didn't replace the piston rings? How come?
Wrt oil temperature, why don't you try via OBD2 and see if it is the sensor or just the gauge.
I think the fact that the rings on the Brera and the 159 making better than published power figures for a new engine, suggesting its rings are also good, is testament to how well the spray jets work on lubricating the underside of the pistons.
 

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I think the fact that the rings on the Brera and the 159 making better than published power figures for a new engine, suggesting its rings are also good, is testament to how well the spray jets work on lubricating the underside of the pistons.
According to my mechanic, the rings start wearing down at about approximately 100k miles.But if yours are at 40k then it makes sense.
 

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I've stripped 200, 000 mile motors for parts and found rings still within tolerances...good oil changed frequently should mean the the rings/bores won't be the reason an engine dies. I had the sump of my 151,000 159 to replace the oil pump seal....your could still see the cross hatch marks on the bores!
 

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Discussion Starter #186
According to my mechanic, the rings vegin wearing down at about approximately 100k miles.But if yours are at 40k then it makes sense.
I read somewhere, I think it was reference the Holden/Chrysler version of this engine - substantially the same engine, is designed around a life of 150,000 miles. Of course it depends very much how well the engine has been treated. But there is no question, spray jets add greatly to the longevity of cylinder bores and piston rings. But the cost of a set of new rings is ludicrous.

For those that are contemplating the Giulia, what pricing policy are Alfa going to adopt for spares when these cars come on the market second hand? Parts for BMW are so cheap, probably because there are so many of their cars on the road. So a V10 or V12 Beemer is a real prospect for some enthusiasts. Alfa's are not.

This, I think is another reason why the Busso is going to become even more desirable. It was in production, if one includes with Lancia, for 28 - 9 years. And that will make the re - manufacturing of certain components economic. The 1750 TBi - killed, along with the 2.2 and 3.2 JTS engines after one run. Who is going to re - manufacture any components for the few cars that exist, even so soon after sales stopped. If Fiat had any concern for the Marque, they would sell it to Audi.

I think I am coming to respect the 3.2 JTS more as a great GM/Holden engine and I value that above what Alfa have done with it. The Insignia 2.8 VXR Turbo, the SAAB 2.8 Turbo equivalent and the Holden 3.6 are great engines. The 3.2 JTS, in standard guise ia not!
 
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