Date:         Wed, 23 Jun 1999 17:37:28 PDT
Reply-To:     vwvanman@EXCITE.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         vwvanman@EXCITE.COM
Subject:      Re: Mark Stephens six-stud system
Comments: To: vanagon@vanagon.com
Content-Type: text/plain

> From: vwvanman@excite.com
> To: "Brian W. Block" <bwblock@XOOMMAIL.COM>
> Cc: vanagon@vanagon.com
> Subject: Re:      Mark Stephens six-stud system
> Date: Tue, 22 Jun 1999 17:57:34 PDT
> Message-ID: <930099454.19216.246@excite.com>
>
> On         Tue, 22 Jun 1999 11:30:27 -0700, Brian W. Block wrote:
>
> > Hello VW fans:
> >
> > I am new listmember, and owner of '83 vanagon (air cooled).  I am
> experiencing
> > loss of compression from leakage around cylinder head.
>
> Does your engine have a lot of mileage?
>
> I built several custom 2L T4 engines for my 73 VW bus.  The second has a
set
> of "zero" deck heads from MSP.  I am not having (nor ever have had) a
> leakage problems.  It will cruise at 75 mph has topped out over 100
(tried
> it once on flat land to see how fast it could go)
>
> The leakage problem might be a warped head.  If it has been rebuilt, the
> rebuilder could have left the head gasket out which would cause it to
have
> too high a compression and warp a head and leak.
>
> I do have some thoughts about gaining some HP.  I have built a HP 2.1L
> Wasserboxer and several custom 2L T4 engines.
>
> Robert
>
>
>
> Am considering going
> > to the "six stud system" from Mark Stephens-- This includes oversize
> pistons
> > and sleeves and two additional studs to bolt on cylinder heads for each
> side.
> > I figure this should cure leaks and provide some additional hp as well.
>
>  I would go this route only if you go to larger than 96 mm pistons.
>
> The 96 mm pistons will work IF you add ceramic coating on the piston top,
> combustion chamber, exhaust valve radius and exhaust port.
> At least get the exhaust valve coated @$6 to protect it from heat damage
and
> keep it from dropping.
>
>
> The T4 engine is finally catching on to be the engine of choice for may
T1
> to T4 engine conversions.
> Easy HP gains:
> Change to a distributor-less ignition system
> Better exhaust system(I had a porsche Bursch Racing exhaust modified to
fit
> on my 73).
> Red line oil in engine and tranny
> K&N Air filter (If they make one I do not know)
> 4 tip Bosch platinum plugs
>
>
> go to the news group:
>
> rec.autos.makers.vw.aircooled
>
> for tips and links to sites where T4 power is starting to rule...
>
> home.att.net/~NEXTGEN/
> www.dolphinsci.com/typeIV.html
>
>
> If you are rebuilding add a counterweights to the stock crank and then
> lighten the flywheel to keep the overall weight the same.  It adds power,
> enable the engine to last longer and it will run smoother and quieter
(well,
> that would depend on your exhaust setup).  There are a lot of things to
> change to add some REAL HP to your engine WITHOUT decreasing the life BUT
> increasing the LIFE AND POWER.
>
>
>
>
> Robert
>
>
>
>
> _______________________________________________________
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