Date: Mon, 27 Jun 2016 16:19:38 -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: <CANEuo0jb23_P2caK1BgmcRtYqMU0Yjwx2KTM6d5yu=ypE1tS0w@mail.gmail.com>
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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>
> 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] On Behalf
>> Of kenneth wilford (Van-Again)
>> Sent: Wednesday, June 22, 2016 9:03 AM
>> To: 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