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Old 06-14-2005, 01:27   #1 (permalink)
Michael Pardee
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Porous blocks

On a Toyota newsgroup I frequent an owner has been told by the dealer's shop
that his engine block was porous. IIRC there was a run of engines (was that
in the 940s?) that were plagued by porosity and wondered if anybody had
information about how serious the problem is.

Mike


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Old 06-14-2005, 01:27   #2 (permalink)
Scott
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Re: Porous blocks

The problem was with early ('91-'95) 960/S90 inline-6 blocks, and it was
caused by an interaction between coolant and the alloy used in the block.
These blocks literally corroded away. I believe that Volvo issued a 'silent
recall' in the mid 1990's and ended up replacing quite a few engines that
were still under warranty by virtue of this program.

This should not be a problem that afflicts any of the 960/S90's which are
currently on the road.

"Michael Pardee" <michaeltnull@cybertrails.com> wrote in message
news:DNydnVXj-oM9qzzfRVn-ow@sedona.net...
> On a Toyota newsgroup I frequent an owner has been told by the dealer's

shop
> that his engine block was porous. IIRC there was a run of engines (was

that
> in the 940s?) that were plagued by porosity and wondered if anybody had
> information about how serious the problem is.
>
> Mike
>
>



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Old 06-14-2005, 01:27   #3 (permalink)
Michael Pardee
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Posts: n/a
Re: Porous blocks

Thanks, Scott. That would be different from the situation with the Toyota,
since this is the first one to show up. Looks like a casting defect in that
one.

Mike

"Scott" <scotchman35@earthlink.net> wrote in message
news:Hsfoe.546$4u6.333@newsread2.news.pas.earthlink.net...
> The problem was with early ('91-'95) 960/S90 inline-6 blocks, and it was
> caused by an interaction between coolant and the alloy used in the block.
> These blocks literally corroded away. I believe that Volvo issued a
> 'silent
> recall' in the mid 1990's and ended up replacing quite a few engines that
> were still under warranty by virtue of this program.
>
> This should not be a problem that afflicts any of the 960/S90's which are
> currently on the road.
>
> "Michael Pardee" <michaeltnull@cybertrails.com> wrote in message
> news:DNydnVXj-oM9qzzfRVn-ow@sedona.net...
>> On a Toyota newsgroup I frequent an owner has been told by the dealer's

> shop
>> that his engine block was porous. IIRC there was a run of engines (was

> that
>> in the 940s?) that were plagued by porosity and wondered if anybody had
>> information about how serious the problem is.
>>
>> Mike
>>
>>

>
>



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