Date: Tue, 28 Jun 2016 11:57:38 -0700
Reply-To: Scott - IMAP <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott - IMAP <scottdaniel@TURBOVANS.COM>
Subject: Re: Problem with push rod tube seals?
In-Reply-To: <1004071337.2594101.1467080229641.JavaMail.yahoo@mail.yahoo.com>
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nice to see your comments.
I was going to mention 'workmanship' .....i.e. 'how and how carefully
the parts are installed."
I would even say ..Your Good Results come 70 % from good solid careful
Workmanship,
and only 30 % from what parts are used .
- or some similar proportion ..it's the Workmanship that's the most
important part .
I don't think I fuss over that 'seam pointing up' detail anymore. Rarely
a problem with leaking tubes and seals.
On 6/27/2016 7:17 PM, den jolliffe wrote:
> I'm totally with you on OE parts being re-used on a rebuild if they
> are clean and non wear related...
>
> These tubes are stainless originally..sure they have a seam, and must
> be positioned with the seam up...I can't count how many leaking tubes
> I have had to replace over the years with the seam facing down...
>
> Same goes with rings.."my engine burns oil"...I get it apart and the
> oil scraper is facing down on 3 of the 4 cylinders and the other rings
> aren't positioned correctly either...no wonder it burns oil...when did
> you change the oil last "I do it once a year, I only drive it in the
> summer"...
>
> OK, I'm on a rant today...poor quality assembly makes me pi$$y, I must
> be getting old...LOL
>
> Den.
>
>
> On Monday, June 27, 2016 7:19 PM, Scott - IMAP
> <scottdaniel@TURBOVANS.COM> wrote:
>
>
>
> fwiw,
> I can't get too into this theory on the metal of the tubes not being
> malable anymore or whatever was said in the vein.
>
> I've used hundreds and hundreds of those push rod tubes over on VW
> oppssed engines..
> and don't think I've ever had a problem with the tube itself .
> I don't re-use beat up ones of course ..
> and I'm real careful about the angle they are at on the ends where the
> seals go., like rotate the tubes before head is fully tightened down.
>
> I use my fav Permatex High Tack gasket sealer on both sides of the
> seals.
>
> I have stretched the tubes much too far a few times ...and even that
> doesn't cut or squish the seals.
>
> oh the spring loaded ones ...I only use those if I have to. They can
> leak at the sliding junction ..
> then I have to goop them up there to not leak. They are for 'repair'
> only...like to replace a tube without removing a head.
>
> Personally ..I far more trust 'good ol' good used tubes' then I might
> new ones. Very strong chance new ones are not made as well as ones
> made
> say 20 yrs ago.
>
> lol..I trust 'good used parts' a lot more than new ones sometimes.
> 'All New' in my opion is just asking for issues.
> I'll take 'good serviceable original type parts' ( on non-wear items )
> any time.
>
> I've noticed over thousands of jobs ..
> they don't really remember too much about what it cost for the
> repair ..
> what they notice FOR SURE is when the repair doesn't last or work out.
>
> Seriously ..it's been studied even ...'cost' per se, is not the top
> priority for most customers..
> a few tight wad types, sure ..
> but for 'normal good people' ...the long lasting nature of the
> repair is
> By Far their Main Concern,
> not the initial dollar cost.
>
> and if anyone ever tries to talk ya into a cheap repair, or using
> cheap
> parts, or worst of all Their Cheap Parts...
> good bye !
> Don't need that kind o' aggravation at all !
>
> Scott
>
>
> On 6/22/2016 11:04 AM, kenneth wilford (Van-Again) wrote:
> > That sounds like a reasonable explanation. I can see how they
> would get
> > work hardened when they are restretched and we did reuse
> > good used ones on this rebuild because it was a few years ago
> and there
> > were no new tubes available at the time. Now I can get them
> again fairly
> > cheaply so I would use new no matter what. I did just this on a
> cylinder
> > head replacement job we just did. I hate when reusing old parts
> comes back
> > to bite you in the butt. Usually when you are doing it to save the
> > customer some money too.
> >
> > Ken
> >
> > On Wed, Jun 22, 2016 at 12:57 PM, Stuart MacMillan
> <stuartmacm@gmail.com <mailto:stuartmacm@gmail.com>>
> > wrote:
> >
> >> Wow, that's an odd one. I have to contribute my 2 cents worth
> on this
> >> just for fun. I'll bet the old pushrod tubes are the problem,
> not the
> >> seals. They may get less malleable as they age, and after
> stretching them
> >> for reuse they may not have the flexibility they once had, and
> that leads
> >> to too much pressure on the seals.
> >>
> >> I assume you'll replace these tubes with spring loaded ones,
> and I doubt
> >> you will have any problems with them. You may want to replace
> the pushrod
> >> tubes with new ones on all your rebuilds now.
> >>
> >> Stuart
> >>
> >> -----Original Message-----
> >> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com
> <mailto:vanagon@gerry.vanagon.com>] On Behalf
> >> Of kenneth wilford (Van-Again)
> >> Sent: Wednesday, June 22, 2016 9:03 AM
> >> To: vanagon@GERRY.VANAGON.COM <mailto:vanagon@GERRY.VANAGON.COM>
> >> Subject: Problem with push rod tube seals?
> >>
> >> So I have been using the Victor Reinz and or the Erling
> complete engine set
> >> for years and years to on rebuild engines and cylinder head
> jobs. We have
> >> done so many over the years with no real issues. However the
> last two
> >> engines we rebuilt started having problems with oil leaks from
> the push rod
> >> tube area not long after we rebuilt the engine (probably 2000 miles
> >> range). I just had one of the customers in here this morning
> and it seems
> >> like an issue with the push rod tube seal itself. The small
> end ones
> >> seemed to be expanding and trying to squish out around where
> they seal to
> >> the interior of the engine under the valve cover. One was so
> bad that it
> >> cut in half and the other two on the opposite side of the
> engine were just
> >> starting to emerge and do the same kind of thing. Not all of
> the seals
> >> were doing this, the large end seals which are made of the same
> material
> >> were fine and most of the other small seals seemed to be fine.
> Anyone else
> >> have a similar issue lately? I am just wondering if it is an
> isolated
> >> problem or something I should call my supplier about? I think
> the kits we
> >> have used lately have all been the Victor Reinz ones if that
> helps out.
> >>
> >> --
> >> Thanks,
> >> Ken Wilford
> >> John 3:16
> >> www.vanagain.com
> >>
> >
> >
> > --
> > Thanks,
> > Ken Wilford
> > John 3:16
> > www.vanagain.com
>
>
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