durability of JH block internals and going turbo

[jtoomasson@yahoo.com (Jeff Toomasson)]

Thanks, Dan - definitely a good starting point.

One more question (actually, two, I guess...): can one use JH rods with 3A
crank and pistons in a 3A block to lower compression?  Would the added
displacement make as much difference in a forced induction setup as it does
N/A? I guess that opens up reference point issues, but just humor me...  :)

Thanks again - JT
----- Original Message -----
From: "Dan Bubb" <jdbubb@ix.netcom.com>
To: "Jeff Toomasson" <jtoomasson@yahoo.com>
Cc: <scirocco-l@scirocco.org>
Sent: Monday, October 28, 2002 1:11 PM
Subject: Re: durability of JH block internals and going turbo


> I think the general consensus on the VW Hardcore forum is that the stock
> JH internals are good for at least 200 hp. You might want to go there at
> www.vwsport.com and look for the Hardcore forum. The top thread is about
> the easy way to get 200 hp.
> As far as new pistons; new as in slightly oversize? of something special
> like forged?
> I think the stock pistons can handle it, but if they're worn or there is
> a lot of blowby, that might cause some problems.
> Dan
>
> > Jeff Toomasson wrote:
> >
> > I was curious what the general consensus is on the durability of stock
> > JH internals (i.e., crank, rods, pistons, etc.)
> >
> > The reason I ask is that I have really no idea what rigors a JH block
> > could withstand.
> >
> > Given a rebuild, knifing the crank and balancing the internals - could
> > the stock components RELIABLY handle ~200 whp and the ~15psi of boost
> > required to get there?
> >
> > I repeatedly see people going with new pistons, rods, etc., but I
> > don't ever see anyone talk of the benefits (other than increasing
> > bore) that those pistons are supposed to achieve...
> >
> > TIA, JT