Piston Q

[marc_scirocco at sympatico.ca (Mtl-Marc)]

Thanks for the info Dan, I'll call my machine shop so they can
machine/balance my pistons/rods.

Here is what I had in mind for headgasket http://www.headgasket.com

Cheers.

Marc 

> -----Message d'origine-----
> De : Dan Bubb [mailto:jdbubb@xxxxxxxxxxx] 
> Envoy? : 7 mai 2007 09:47
> ? : marc_scirocco@xxxxxxxxxxxx; scirocco-l@xxxxxxxxxxxx
> Objet : Re: Piston Q
> 
> Well, technically the piston should have a shorter pin 
> height, by half the difference in stroke between the TDI 
> crank and the 2.0L crank, 1.35mm I think.
> IIRC the ABA steel head gasket is 1.65mm thick compressed. 
> So, two of them stacked would give you about 3.3mm or 1.3mm 
> above your piston which is just about the right piston to 
> head clearance.
> I don't know if that's a good solution though. I'd wonder how 
> well they would seal if the embossing on the two gaskets 
> didn't line up close enough.
> If you go with a copper gasket measure the piston protrusion 
> from the block using a micrometer or caliper. Add 
> .040"minimum to that for the final gasket thickness.
> 
> As a minimum, after you modify the pistons for oil squirter 
> clearance, you need to get them rebalanced. You can modify 
> them yourself, but I'd be striving for an identical cutout in 
> all the pistons.
> Dan
> 
> From: <marc_scirocco@xxxxxxxxxxxx>
> To: <scirocco-l@xxxxxxxxxxxx>
> Sent: Monday, May 07, 2007 8:47 AM
> Subject: Piston Q
> 
> 
> >I installed my TDI crankshaft in my 9a block this week-end hoping to 
> >get 2.1l of 8v power ;-)
> > 
> > The crankshaft spins freely without hitting anything, so 
> that is good.
> > 
> > However, there are two snags as I see it.
> > 
> > 1. the piston stick about 2mm out of the cylinder at TDC.
> > Can I safely run 2 head gaskets to bypass this problem?
> > I have seen a shop in the norteast that can make me a 
> copper head gasket, Perhaps this can be a more permanent 
> solution in the long term.
> > 
> > 2. on the bottom stroke, the piston hit the oil squirter.
> > There is already a notch in the piston skirt for the oil 
> squirter. But I need a bigger notch.
> > Do I need a machine shop to do it or can I just enlarge the 
> notch at home with my die grinder?
> > 
> > Thanks
> > 
> > Marc
> > 
> > 
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