RE: [DML] Re: Turbo question

["michael townsley" <townfour@xxxxxxxxxxxxxx>]

( Moderator's note: www.turbonetics.com is a good turbo source. They own the Rajay name now and service and sell them. The Rajay is the turbo used on the BAE single turbo kits. www.turbocity.com is another source for rebuilds and rebuild kits.)


I have an 83 with an early set of island turbos i.e. no cats...I have not
been able to figure out if they are working right or not. When I accelerate
or rev up the engine...the boost gauge drops to zero and recovers very
slowly...also I get a putt putt sound when accelerating from a stopped
position and it has pretty slow to pick up. I am not sure whether or not
these units have any oil cooling at all...I have not seen any information
that says they do nor have I noticed any oil lines traveling to them.

I have not been able to find anyone I would trust to look at them...PJ Grady
told me he does not work on them any more and Calloway (Turbo Charged)
Corvettes which is nearby also would not touch them ... additionally I
contacted this woman Eleanor who used to market the kits after her husband
passed away and she sent me some specification info but could not recommend
anyone who could service them in New England...I have no idea whether these
units are helping or hurting the car's performance.

Sincerely,

Mike

Michael W. Townsley
2 Fox Hill Road
Old Saybrook, Connecticut 06475
860 304 2412
townfour@xxxxxxxxxxxxxx
 

-----Original Message-----
From: Chris Shepherd [mailto:chrisau79@xxxxxxxxx] 
Sent: Monday, July 26, 2004 6:44 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: Re: [DML] Re: Turbo question

I disagree. I've got an "Island" setup on my car and it has been on the car
for 11 years. I've been the owner for 10. I pull into the garage and turn
the engine off. I pull into a parking place and turn the engine off. The
only time the turbos' come into play is when I'm passing someone or going up
a really steep grade at elevation, the Siskiou Summit for example. The rest
of the time they are just idling along with no boost. Yes they are spinning
but they are not generating any heat greater than the exhaust passing
through them.There is no way I know of to cool them below the exhaust temp.
before shutting the engine off anyway.

David Teitelbaum <jtrealty@xxxxxxxxxxx> wrote:What I have seen, usually on
race cars, is an accumulater type system
that pumps up oil pressure while the motor is running and holds it so
when you first start the motor up it supplies oil under pressure until
the motor's oil pump can. They aren't usually filtered because of the
large flows required. The oil also performs another important
function, it cools the bearings, which is why you NEVER shut an engine
equiped with a turbo right down, you should wait for the turbo to
spool down and cool a little. If you don't the oil literaly cooks. It
gets so bad that the drain cokes up and gets plugged up with burnt
oil. When that happens you don't get a full flow of oil to the
bearings and they burn up. You also MUST change the oil 2X more often
with a turbo. It is also a good idea to use synthetic, it is more
durable with the high temperatures. Even though synthetic is expensive
the oil is cheaper than the turbos!
David Teitelbaum
vin 10757


-- In dmcnews@xxxxxxxxxxxxxxx, "B BENSON" wrote:
> > Something that I've noticed with every single turbo >set up that I've
> > seen installed is dirty oil being used to lube the >turbines. Weather
> > it's a "T" inline from the oil pressure sending unit, or a >pickup
> > line pulling oil directly from the sump. Why? If you >want to prolong
> > the life of the turbos, retrofit your car to supply >CLEAN oil to the
> > turbos.
> >
> > -Robert
> > vin 6585 "X"
> 
> 
> 
> Where else do you think you'd get oil from? The types of turbos used
in the
> kit's that were offered for DeLoreans are the type that float the
impeller
> shaft in oil which is flowing through holes in the bushing
surrounding the
> shaft. The life of that bushing can be measured in seconds if not
> milliseconds if oil flow is inadequate or disrupted when under
boost. Trying
> to install filtering up stream of the turbo or trying to design a
separate
> source for the oil shouldn't even be considered as a part of the system.
> 
> Bruce Benson




To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at
http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links







__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

[Non-text portions of this message have been removed]




To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at
http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links



 






To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/dmcnews/

<*> To unsubscribe from this group, send an email to:
    dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/