[T3] 73 T-3 oil temp?
topnotch at nycap.rr.com
Mon Sep 6 17:20:43 PDT 2021
If the heads were cut, it would need to be cc'd and compression ratio adjusted accordingly, also that changes the valve train geometry and new adjustable push rods
Need to be used. Lots of variables and one change affects everything. Even with stock compression ratio I had to run 89 in mine, what octane are you running? It wont make it run hotter
But crap gas will make it detonate and that’s bad...
topnotch at nycap.rr.com
71 Squareback “Hothe”
65 Notchback “El Baja Rojo”
93 RX7 “Redstur”
13 Subaru Outback "Blendin"
From: type3-vwtype3.org <type3-vwtype3.org-bounces at lists.vwtype3.org> On Behalf Of William Jahn
Sent: Monday, September 6, 2021 3:54 PM
To: type3 at vwtype3.org
Subject: Re: [T3] 73 T-3 oil temp?
I checked the distributor not long ago. It has all the springs and everything in place. I also checked the mechanical advance and it does not advance more than what a 73 should . I forget right now what that was. I got a good vacuum advance can yet when I installed it once the engine was hot it would ping . What I think is the reason is when I rebuilt it, the new pistons were flat top. Did the rebuild in 1997 the machine shop also fly cut the heads just to clean up the mating surface. Last time I was playing around with the timing it seemed to run a bit stronger with the timing retarded a bit think it's at 3 BTDC . It used to be fine at 5 BTDC yet once the fuel changed over the years it got worse. I just had an auto zone timing light I got years ago so the best I could do is the one harbor freight offers that has an advance knob yet I haven't used it yet.
On Mon, Sep 6, 2021 at 12:23 PM Phil Hof <phil.hof at ostronic.org> wrote:
> I am glad to see it presented that 220 is a MINIMUM and not a sign of
> overheating. It is necessary to boil off water from condensation and
> anything less will not do that.
> I also have an overheating problem, as many know, from my broken
> distributor on the return for the Invasion five years ago. 260-280 is
> too hot, and that s how mine runs on the freeway, so the engine is now
> out and stripped for another rebuild.
> I also have learned a lot about viscosity and the operation of the
> dual-relief case plungers. Thicker oil may boost pressure, but it
> will look like thick cold oil and the plunger will bypass the oil
> cooler, making it run hotter, not cooler. 20-50 is not thicker when
> cold, but stays a little too thick when hot and so the cooler may be
> bypassed. I ran this oil for years without trouble, but I was
> probably shortening the life of the motor. Live and learn.
> If yours is running hot, check the timing not just static, but also
> the eventual advance at higher rpm and vacuum. That s how mine
> failed. Broken spring posts or weights meant it never stopped
> increasing with rpm right up to 45 degrees mechanical advance!
> > --------------------------------------------------------------------
> > --
> > Message: 1
> > Date: Sun, 5 Sep 2021 22:22:47 -0400
> > From: "Keith Park" <topnotch at nycap.rr.com>
> > To: <type3 at vwtype3.org>
> > Subject: Re: [T3] 73 T-3 oil temp?
> > Message-ID: <email@example.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> > Quite a few varibles, what is your oil viscosity? Oil light with
> > 10W30
> > not as bad as with 25W50,
> > Still, its an indication of a worn engine, but not necessarily worn out.
> > The sender is also part of the equation, the good german ones come
> > on at 5PSI, The cheap ones don?t come on till there is virtually no
> > pressure.
> > When the engine was new, the idle with 30wt on a hot day at about 12psi.
> > 180 oil temp is cool
> > 220 is starting to get warm
> > 230 its getting warmer
> > 240 its time to back off a bit, that?s hot, although it will
> > tolerate
> > for some time with good oil, but these are OIL temps, not the temp
> > of the block, or the cooler, which is what you
> > with a sender screwed into anything.. its heat sunk on the block
> > And is 20-30 degree's cooler than the actual oil around it.
> > Keith
> > Topnotch Restorations
> > topnotch at nycap.rr.com
> > http://www.topnotchresto.com
> > 71 Squareback? ?Hothe?
> > 65 Notchback? ?El Baja Rojo?
> > 93 RX7? ?Redstur?
> > 13 Subaru?Outback?"Blendin"
> > -
> > *************************************************
> VWType3.Org mailing list - type3 at vwtype3.org To unsubscribe or change
> subscription options, visit:
> If you need more help, contact: gregm at vwtype3.org
-------------- next part --------------
An HTML attachment was scrubbed...
VWType3.Org mailing list - type3 at vwtype3.org To unsubscribe or change subscription options, visit:
If you need more help, contact: gregm at vwtype3.org
More information about the type3-vwtype3.org