Thanks for the comments Scott....good thorough reply.
I understand that if  compression is lost because a valve is open,

   - it's excess oil pressure that's opening the valve, not the angle of
   the lifter.
   - Check the oil pressure and the pressure relief valve

 Correct?

Bill

On 4/14/08, Scott Daniel - Shazam <scottdaniel@turbovans.com> wrote:
>
> He only time hydraulic lifters with an oil or hydraulic problem could ever
> keep an engine from starting is if they get held 'too open' by excessive
> oil
> pressure.  I've seen it and read about it in various makes of cars.
>
> I'm pretty sure that if they don't get any oil pressure, the valves will
> still be held open enough to make the engine start and run, but with very
> noisy valves.
>
> Waterboxer and all inline 4 VW hyd. Lifters are not related in any way.
> Nothing to do with each other except the principle under which they
> operate.
>
> Hyd. Lifters do not start in VW diesel engines until 86, maybe a year
> earlier in Audi - or something close to this.
> 82 diesel vanagon most definitely never had hyd. Lifters.
>
> I wondered/was concerned about diesel hyd. lifters at 50 degrees when I
> did
> my first TD engine conversion, but it's not a problem, and I've  have run
> many many thousands of miles with vw diesel inline 4 hyd. Lifters at 50
> degrees.
>
> For your situation here, it's  not hard to check the compression,
> Or observe the valves being opened and closed with the vale cover off.
>
> And if you do think something is going on with the oil and/or air getting
> into the hyd. Lifters from the oil pump ........you check the oil
> pressure,
> ( to make sure it's not excessive, like from stuck pressure relief valve )
> and for air in the oil from the oil pump ( which I've never heard of on a
> VW
> ) .....if that's going on, then you think about the oil pump itself, but
> it's extremely unlikely in a VW diesel as far as I know.
>
> Scott
> www.turbovans.com
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Bill MacLachlan
> Sent: Monday, April 14, 2008 11:51 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: 52 degree Inline 4 hydraulic lifters leaking down
>
> Hi all...
> I have an 82 diesel converted to inline 4  with CIS injection about ten
> years ago- just before I bought the vehicle.
> I've just had a local VW shop install a replacement 1800cc inline  motor
> in
> my van.... I believe they are a good well experienced shop.
>
> They are having an issue with the replacement motor. If the motor is left
> for a few hours, apparantly there is no compression, it won't start and
> the
> mechanic is thinking this is the hydraulic lifters leaking.
> My old motor had hydraulic lifters ( well, at least that's what the
> sticker
> on the valve cover said and I have no reason to believe otherwise) and I
> never had an issue with it.
>
>
> Here are some questions:
>
> Has anyone else out there had experience with hydraulic lifters in I4
> setups-  when tilted at 52 degrees?
> Are the lifters in a waterboxer  the same as the ones used in an inline4 ?
> Did the 82 vanagon deisel motor use hydraulic lifters? If so were they the
> same as the ones used in more upright deisel motors?
>
> Is  there anything  I should suggest to the mechanic that would help him
> get
> this thing fixed?
>
> btw current oil filter is a Mann - the black one - and I think they have
> 10-40 oil in the motor.
>
> Thanks all
>
> Bill M
> 82 I4 GL
>
>
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