[Vwdiesel] Oil Leak

[brian hoeft]

Oh yeah, good point Stephen ...UNDER torqued..



On Sat, Sep 18, 2010 at 3:05 PM, brian hoeft <qweblog at gmail.com> wrote:

> Ah, okay then, totally different situation with more room for error. Is the
> rest of the engine clean? That'll help. If you over-torqued the head you may
> have comproised the seal around the return. Oil housing? that 3 hole paper
> gasket?.. or the switch?.. turbo feed fitting?.
>
> Regarding the torque specs and this reputable engine builder... By OE does
> he mean OE for head studs or OE of the chassis your assembling an engine
> for? if hes refferring to the OE of the studs, being ARP, fine, thumbs up.
> If he's referring to the OE, meaning VAG, he was maybe mis-comprehending the
> situation or isnt as competent. The clamping force applied using studs is
> different than using bolts and tightening the nuts of a head stud as you
> would tighten the head/shank of a bolt is not proper.
>
> When I told you the specs of mine, I am speaking from experience and from
> APR's chart.
>
> Good luck figuring it out, hopefully its simple.
>
> -Brian
>
>
> On Sat, Sep 18, 2010 at 11:42 AM, Rudy Petersen <petersenrudy at hotmail.com>wrote:
>
>> By front of the Head, I meant front of the Engine facing forward when
>> you're
>> standing in front of the Car and looking at the Engine.  Actually it is
>> the
>> left side of the Engine in the Proximity of the #3 Cylinder.  It's a brand
>> new re manufactured 1981 11mm Head Bolt Engine  I've used the same machine
>> shop for years, they don't make mistakes like this.
>>
>> Everyone I talk to about the torque specs for the Studs says something
>> different so I figured no one really knows what they're talking about.  A
>> reputable VW Engine builder in my area suggested I torque them to OE
>> specs.
>> The clamping force would be greater than OE Bolts due to the fine threads
>> on
>> the nuts and the ARP Lube, made great sense to me.
>>
>> Thanks everyone for the suggestions and your time..........Rudy
>>
>>
>>  _____
>>
>> From: brian hoeft [mailto:qweblog at gmail.com]
>> Sent: Saturday, September 18, 2010 7:54 AM
>> To: Rudy Petersen
>> Cc: vwdiesel at vwfans.com
>> Subject: Re: [Vwdiesel] Oil Leak
>>
>>
>> Rudy,
>> It would be helpful if you could be more precise in your explanation. I'm
>> also unaware of which engine you're referring to.
>>
>> By front of the head, you do mean the timing belt side correct? Not much
>> it
>> could be there, cam/intermediate/crank seal, valve cover&head gasket.
>>
>> I dont believe the head studs need to be re-torqued but someone may chime
>> in
>> with something more definitive, although your torque values dont match my
>> notes. Mind you, this is regarding a 1.6TD (code-MF). My ARP notes say
>> 80ft.lbs with ARP moly lube and 120ft.lbs. with 30wt oil.
>>
>> If everything you did was proper, I would question the work of the machine
>> shop. A so-called reputable shop, locally, cost me a lot of money and
>> could
>> have hurt my reputation, so I now have to travel 100 miles round trip to
>> have confidence in that aspect.
>>
>> Also, what compression "appears" to be is not always the case. As im sure
>> you know, cold compression isn't hot compression. If the guy brought you
>> the
>> car running and failed to tell you that it took several more cranks than
>> usual to start, that could be a tell tale sign. Otherwise, only a
>> compression or leakdown test would really answer the question.
>>
>> Also, be careful you're not deceived by oil that gets moved around be the
>> fan or pressure. I've seen plenty of oil leaks that look like theyre
>> coming
>> from somewhere other than the actual source.
>>
>> -Brian
>>
>>
>>
>>
>> On Fri, Sep 17, 2010 at 1:28 PM, Rudy Petersen <petersenrudy at hotmail.com>
>> wrote:
>>
>>
>> I'm working on a Customer Car that came in with an Oil leak in the front
>> of
>> the Head.  I had completely rebuilt the Engine, Head was machined flat as
>> well as the Block surface.  I used ARP Head Studs and torqued them to OE
>> spec (65 ft. lbs.) I didn't re torque the Studs and there is 3000 miles
>> since the install.
>>
>> Engine runs very well, no Oil in Water and doesn't appear to be any loss
>> of
>> compression.  I'm going to re torque the Studs and clean up the area and
>> see
>> what happens.  Anyone ever run across this?
>>
>> Rudy
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>>
>>
>>
>>
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>
>
>
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