tbi motor different cylinder heads - Alfa Romeo Forum
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tbi motor different cylinder heads

hey all

something a little more technical as a subject
dont know if its a repost or someone has allready mentioned it but today as i was searcing through FIAT ePER i found something interested

all 1750 tbi engines that was build before 23/5/2011 have different cylinder heads from the tbi's after that date , AR changed them.

apart from the know turbo change after 2011 (was KKK and i think they put an IHI turbo after that date) it seems there is difference in the cylinder head as well and ofcourse the gasket

it is also quick lighter (14 kg insted of 20kg)

the dealership parts numbesr are 71770157 for the old one (<= 2011)

and its been replaced with 71753259 after 23/5/2011

Since in the ePER u cant find exactly the parts on that cylinder head ( for example are the same valves ? springs ? retainers ? valve guides ? any differnces in sizes ?)

i wonder if someone knows more about that, perhaps any differences

Any information would be helpfull for all of us : Thumbs:
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Very interesting, I've heard that there is a difference in power, 200 pre 11 cars to 220 there after.

Also I've heard mentioned something about software upgrades on the newer models too........( not sure if that would increase the BHP )
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Brera 1750Tbi Ti

Considering the last production run for the Brera Tbi was late 2010 and 159 ended in late 2011, doesn't make sense that they would want to have a change for 6 month production run of the 159. Unless the changes are really for the Giulietta?
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1750 , cylinder , head , heads , motor , tbi

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