Missing the Point (was: Any drawback to having a hydro head onaJH?)

[jdbubb at ix.netcom.com (Dan Bubb)]

Well, the only data point I have is that I'm running a solid head on an ABA
that has a pump sized for a hydro head. I have to run 5W-30 to keep the oil
pressure low enough.
So, I would think you would either need to check you had the right
combination of head and pump or mount up an oil pressure gauge (which is
always good to have anyway).
Dan

----- Original Message -----
From: "Jeff Toomasson" <jtoomasson@yahoo.com>
To: <scirocco-l@scirocco.org>
Sent: Wednesday, September 17, 2003 11:16 AM
Subject: Missing the Point (was: Any drawback to having a hydro head on
aJH?)


> Somehow this thread got distorted and I still really haven't gotten the
> answer I was after. So, I'll rephrase:
>
> What is the potential harm of running a hydraulic head on a JH block that
> should, by all rights, have the smaller (30mm) oil pump?
>
> This question was raised because the head that is currently on the '83
> California Edition is stamped hydro (I have yet to confirm, but I didn't
> think they were interchangable with solid heads), yet it should be solid.
I
> have no idea if the pump that's currently in the block had been upgraded
to
> properly feed the hydro head.
>
> Thanks, Jeff
> ----- Original Message -----
> From: "Dave Ewing" <MK1Scirocco16v@comcast.net>
> To: <scirocco-l@scirocco.org>
> Sent: Wednesday, September 17, 2003 12:32 AM
> Subject: Re: Any drawback to having a hydro head on a JH?
>
>
> > You should be able to look into the oil cap and see if it has pucks or
> not.
> > Plus, unless someone has taken it out, the hydraulic heads have the oil
> > deflector sitting above the cam.  But, if it does have a deflector then
> you
> > won't be able to see if it has pucks or not and the deflector is
sometimes
> > installed on the solid lifter heads as an upgrade.  So, either look
> through
> > the oil cap and see if you can see if the lifters have pucks in them or
> pull
> > the valve cover.  If you do pull the valve cover, I'd get the 2.0L
gasket
> > and studs to replace the older style 3 piece rubber/cork gasket.  HTH!
> >
> > Dave
> > ----- Original Message -----
> > From: "Jeff Toomasson" <jtoomasson@yahoo.com>
> > To: <scirocco-l@scirocco.org>
> > Sent: Tuesday, September 16, 2003 11:28 AM
> > Subject: Any drawback to having a hydro head on a JH?
> >
> >
> > When I bought the Cali, I noticed that the head had the big H on it. The
> PO
> > says that the cylinder head had never been replaced so it could very
well
> be
> > the first owner's doing.
> >
> > I checked the block this morning and it is indeed a JH.
> >
> > What would this do? My first inclination is that, assuming only the head
> was
> > replaced, if the engine's oil pump wasn't upgraded at the same time, the
> > smaller solid-lifter pump probably wouldn't generate enough oil pressure
> to
> > allow the hydraulic valve train to operate properly.
> >
> > Or - maybe the engine was completely replaced with something out of an
> > '85/6/7/8 8v and the only way to truly confirm if the oil pump is the
> right
> > one is to crack open the oil pan, right?
> >
> > Sheesh - Only in a Scirocco!   :)
> >
> > JT
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