Well folks its been quite a while since Ive had any news to report or post
about but here goes nothing. The coach has been in Fredickstown,OH for the
better part of 2 months waiting on the removal of the engine and word from
S&J engines. It took quite a bit longer for the garage to take the motor
out of our rig but its was taken out and sent to S&J. S&J engines are a
stand up company is all I can say. They got the motor stripped it down and
diagnosed it in a very timely manor. Word from them was that they found
contamination in the new engine, without being able to definitively say
where the contamination came from they stripped the motor down and rebuilt
it no cost to us and covered under warranty. Motor was shipped out
yesterday(8/2/18) back to the garage. S&J are going to foot the remainder
of the bill for reinstallation and incidentals. There suggestion was to
make sure the oiler cooler gets changed to lessen the chance of
contamination again. My problem/question is, we have the aluminum radiator
from Applied GMC(installed 3months ago) which I believe has the built in
oil cooler. With the hefty price tag of the radiator we cant afford to
replace that as well with new engine reinstall. There is already an inline
added oil filter to help with any contamination the first time which
clearly didnt work. Is there anything we can do to help prevent the
contamination again from happening without changing the radiator out which
is way out of our budget. We just bought a house back here in New Hampshire
and all of our finances are going to be tied up in that especially it being
an 1860 carriage house. At least we have a theme here with trying to keep
old things alive. Haha. Hope everyone is enjoying there summer and motoring
on.
Thanks from the former nomads and now house revivalist
Jim and Jen
> Rob,
> The article that Bill referenced would be of relevance for those
> considering running a high volume oil pump in an olds engine. The article
> also serves to point out the reality that contamination due to a filter in
> bypass mode is a real threat that all engine builders need to keep in
> mind.
>
> Consider what happens to the oil filter bypass valve under any the
> following conditions:
>
> 1-Cold start
> 2-Dirty filter
> 3-high viscosity oils
>
> On a completely stock Olds engine there is a strong possibility that the
> bypass valve may open.
>
> Add a high volume oil pump, and now you are possibly exceeding the flow
> limits of the oil filter, forcing a bypass condition under a wider range of
> conditions.
>
> I have always wondered about how the filter bypass valve responds to a
> high volume oil pump, especially with the relatively small oil filter used
> on the olds engines.
>
> You need to get your flow tests done, and while there, compare the two
> filter sizes and their effects. It would also be nice to be able to compare
> a few different oil viscosities and how they might affect bypass function.
>
>
> Les Burt
> Montreal
> '75 Eleganza 26'
>
>
> >
> > Bill,
> >
> > I'm sorry but in my opinion the information referenced is irrelevant to
> the Olds 455 and 403 as both use oil filters that DO NOT
> > have bypasses in them.
> >
> > The bypass is located in the oil filter adapter tat bolts directly to
> the side of the engine block:
> >
> > http://www.gmcmhphotos.com/photos/455-2f-403-engine-oil-
> flow-path/p60140-oil-filter-base1.html
> >
> > I would suggest you review this sequence of photos:
> >
> > http://www.gmcmhphotos.com/photos/g6398-455-2f-403-
> engine-oil-flow-path.html
> >
> > Regards,
> > Rob M.
> > The Pedantic Mechanic
> > Sydney, Australia
> > AUS '75 Avion - The Blue Streak TZE365V100428
> > USA '75 Avion - Double Trouble TZE365V100426
> > USA '77 Kingsley - TZE 267V100808
> >
> >
> > -----Original Message-----
> > From: Gmclist [mailto:gmclist-bounces] On Behalf Of
> Bill Wevers
> > Sent: Friday, June 8, 2018 11:31 AM
> > To: gmclist
> > Subject: Re: [GMCnet] Motor troubles again!!!
> >
> > Saw this on the Corvette forum, as it relates to the oil filter bypass
> valve.
> > And the Olds is set at only 5 PSI.
> >
> > "Today's engine has very tight tolerances, two stage oil pumps and high
> flow lubrication system requirements. The proper match of
> > oil filter to engine application is more important than it has ever been
> in the past. The use of a replacement oil filter with an
> > internal bypass valve opening pressure specifications of 15 PSI (100
> kPa) or less, allows debris to circulate in the engine causing
> > damage to bearings and other tight tolerances areas, which may result in
> premature engine failure."
> >
> > https://www.corvetteforum.com/forums/c7-z06-discussion/
> 4119585-oil-filter-bypass-valve-is-important.html
> > https://www.corvetteforum.com/forums/attachments/c7-z06-discussion/
> 48268771d1522338334-oil-filter-bypass-valve-is-important-2012-201
> > 7-corvette_-service-bulletin_-17-na-157.pdf
> > --
> > Bill Wevers
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
about but here goes nothing. The coach has been in Fredickstown,OH for the
better part of 2 months waiting on the removal of the engine and word from
S&J engines. It took quite a bit longer for the garage to take the motor
out of our rig but its was taken out and sent to S&J. S&J engines are a
stand up company is all I can say. They got the motor stripped it down and
diagnosed it in a very timely manor. Word from them was that they found
contamination in the new engine, without being able to definitively say
where the contamination came from they stripped the motor down and rebuilt
it no cost to us and covered under warranty. Motor was shipped out
yesterday(8/2/18) back to the garage. S&J are going to foot the remainder
of the bill for reinstallation and incidentals. There suggestion was to
make sure the oiler cooler gets changed to lessen the chance of
contamination again. My problem/question is, we have the aluminum radiator
from Applied GMC(installed 3months ago) which I believe has the built in
oil cooler. With the hefty price tag of the radiator we cant afford to
replace that as well with new engine reinstall. There is already an inline
added oil filter to help with any contamination the first time which
clearly didnt work. Is there anything we can do to help prevent the
contamination again from happening without changing the radiator out which
is way out of our budget. We just bought a house back here in New Hampshire
and all of our finances are going to be tied up in that especially it being
an 1860 carriage house. At least we have a theme here with trying to keep
old things alive. Haha. Hope everyone is enjoying there summer and motoring
on.
Thanks from the former nomads and now house revivalist
Jim and Jen
> Rob,
> The article that Bill referenced would be of relevance for those
> considering running a high volume oil pump in an olds engine. The article
> also serves to point out the reality that contamination due to a filter in
> bypass mode is a real threat that all engine builders need to keep in
> mind.
>
> Consider what happens to the oil filter bypass valve under any the
> following conditions:
>
> 1-Cold start
> 2-Dirty filter
> 3-high viscosity oils
>
> On a completely stock Olds engine there is a strong possibility that the
> bypass valve may open.
>
> Add a high volume oil pump, and now you are possibly exceeding the flow
> limits of the oil filter, forcing a bypass condition under a wider range of
> conditions.
>
> I have always wondered about how the filter bypass valve responds to a
> high volume oil pump, especially with the relatively small oil filter used
> on the olds engines.
>
> You need to get your flow tests done, and while there, compare the two
> filter sizes and their effects. It would also be nice to be able to compare
> a few different oil viscosities and how they might affect bypass function.
>
>
> Les Burt
> Montreal
> '75 Eleganza 26'
>
>
> >
> > Bill,
> >
> > I'm sorry but in my opinion the information referenced is irrelevant to
> the Olds 455 and 403 as both use oil filters that DO NOT
> > have bypasses in them.
> >
> > The bypass is located in the oil filter adapter tat bolts directly to
> the side of the engine block:
> >
> > http://www.gmcmhphotos.com/photos/455-2f-403-engine-oil-
> flow-path/p60140-oil-filter-base1.html
> >
> > I would suggest you review this sequence of photos:
> >
> > http://www.gmcmhphotos.com/photos/g6398-455-2f-403-
> engine-oil-flow-path.html
> >
> > Regards,
> > Rob M.
> > The Pedantic Mechanic
> > Sydney, Australia
> > AUS '75 Avion - The Blue Streak TZE365V100428
> > USA '75 Avion - Double Trouble TZE365V100426
> > USA '77 Kingsley - TZE 267V100808
> >
> >
> > -----Original Message-----
> > From: Gmclist [mailto:gmclist-bounces] On Behalf Of
> Bill Wevers
> > Sent: Friday, June 8, 2018 11:31 AM
> > To: gmclist
> > Subject: Re: [GMCnet] Motor troubles again!!!
> >
> > Saw this on the Corvette forum, as it relates to the oil filter bypass
> valve.
> > And the Olds is set at only 5 PSI.
> >
> > "Today's engine has very tight tolerances, two stage oil pumps and high
> flow lubrication system requirements. The proper match of
> > oil filter to engine application is more important than it has ever been
> in the past. The use of a replacement oil filter with an
> > internal bypass valve opening pressure specifications of 15 PSI (100
> kPa) or less, allows debris to circulate in the engine causing
> > damage to bearings and other tight tolerances areas, which may result in
> premature engine failure."
> >
> > https://www.corvetteforum.com/forums/c7-z06-discussion/
> 4119585-oil-filter-bypass-valve-is-important.html
> > https://www.corvetteforum.com/forums/attachments/c7-z06-discussion/
> 48268771d1522338334-oil-filter-bypass-valve-is-important-2012-201
> > 7-corvette_-service-bulletin_-17-na-157.pdf
> > --
> > Bill Wevers
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
