[Vwdiesel] Re-ringing a Rabbit --(the Wineland way )
LBaird119 at aol.com
LBaird119 at aol.com
Wed Oct 20 01:48:19 EDT 2004
>>Can a hydraulic head be used on a NON hydraulic block ?
Don't think so. The oil returns are different. I'd almost suspect the
supply hole is bigger too. Don't know for positive. I've only seen one
hydraulic head gasket and there was NO way that it would work on a
solid head 1.6 block
> >>Bart Winelands 1.6 NA ----- I would suspect that just installing a
> >>cam may affect oil pressure.
Shouldn't unless the cam journals were worn, which isn't too likely since
the mating surface is aluminum and the flow to the heads is comparatively
low. Cams are interchangeable at least in the 1.6 solids, turbo, and 1.5.
I wonder if the hydraulic has different ramping than the solids like on
domestic engines? Although I don't think you could make those ramps
I'm a bit concerned with that new head I got. The cam bearing surfaces
look to be .002+ larger than the cam journals. Feels sloppy.
> >>Cam bearings are linebored IMHO. So attention would be needed in that
For what? All the heads I've had surfaced and resurfaced, including one
a shop claimed was warped .024 but I measured (on a digital height gauge
and surface plate) at .017 were NOT straightened or align bored. Cam
journals were better than +.001 in relation to alignment to eachother. Never
broke a cam from it and only had them surfaced. Only had to replace the
cam from my Jetta from wear. Journals were fine but the lobes were
all a bit short.
> >>IMHO VW Rabbit diesels rely on lots of oil flow for COOLING that
> translates >>in to LOW oil pressure.
Most 1.5's had 100psi +. Early 1.6's were a bit below 100psi. Turbo and
hydraulic lifters drop pressure down to more of what you normally see
on other engines. 40 to 100 psi, even a little lower. Squirters and
turbo are each worth about 25 to 30 psi loss so in came the 36mm pump.
> >>Bart does your block have oil squirters on piston skirts like the Turbo ?.
I wouldn't expect an '86 NA to have them. If they did, it would've been
easy for one or more to get damaged while honing and lose pressure.
That didn't happen to me on the 5000 though but then it has a bigger,
circular gear oil pump.
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