Ferrari Mailing List: Re: 355 exhaust manifolds or thoughts on buying one...

[Britt2Asa (Britt2Asa]

Interestingly in asking around I have never heard of anyone over here having 
any issue with the exhaust valves nor has my mechanic of 6 years who works on 
more than 30 of these for regular customers. I wonder if the different types 
of petrol in the USA causes this (more sulphur for instance).....

Britt



> A much bigger concern is the exhaust valve guide issue.  The valve
> problem lays in excessive wear of the exhaust valve guides. Lots of theories
> and info on this topic, suffice it to say that it exists on '95, '96, '97
> and even some '98 cars. Can be very expensive to fix, but sometimes people
> spend a lot of time on a full engine out major service with a valve job when
> a carbon-build up is actually the root cause of the problem (resulting in
> poor leakdown/compression test results). 
> 



BR in the UK
1986 328GTS (LHD 89,940km) Died August 19, 2006 Shrewsbury UK
1980 400i (RHD 72,000 miles)