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durability of JH block internals and going turbo
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Jeff-
The stock pistons will be the weakest link in this turbo-chain.
Anything over about 5psi boost will evenually lead to broken pistons =
unless detonation is totally controlled/eliminated. As far as the rest =
of the internals reliably handling 200 hp....depends on on your =
definition of reliable. 1000 miles with no failure? 100,000miles with =
no failure?
Quantify here, son, quantify....
Larry
----- Original Message -----=20
From: Jeff Toomasson=20
To: scirocco-l@scirocco.org=20
Sent: Monday, October 28, 2002 12:46 PM
Subject: durability of JH block internals and going turbo
I was curious what the general consensus is on the durability of stock =
JH internals (i.e., crank, rods, pistons, etc.)
=20
The reason I ask is that I have really no idea what rigors a JH block =
could withstand.=20
=20
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?
=20
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...
=20
TIA, JT
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<DIV><FONT face=3DArial size=3D2>Jeff-</FONT></DIV>
<DIV><FONT face=3DArial size=3D2> The stock pistons will be the =
weakest link=20
in this turbo-chain.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Anything over about 5psi boost will =
evenually lead=20
to broken pistons unless detonation is totally controlled/eliminated. As =
far as=20
the rest of the internals reliably handling 200 hp....depends on on your =
definition of reliable. 1000 miles with no failure? =20
100,000miles with no failure?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Quantify here, son, =
quantify....</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Larry</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A href=3D"mailto:jtoomasson@yahoo.com"; =
title=3Djtoomasson@yahoo.com>Jeff=20
Toomasson</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
href=3D"mailto:scirocco-l@scirocco.org"=20
title=3Dscirocco-l@scirocco.org>scirocco-l@scirocco.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Monday, October 28, 2002 =
12:46=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> durability of JH block =
internals=20
and going turbo</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>I was curious what the general =
consensus is on=20
the durability of stock JH internals (i.e., crank, rods, =
pistons,=20
etc.)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>The reason I ask is that I have =
really no idea=20
what rigors a JH block could withstand. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Given a rebuild, knifing the crank =
and balancing=20
the internals - could the stock components RELIABLY handle ~200 whp=20
and the ~15psi of boost required to get there?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I repeatedly see people going with =
new pistons,=20
rods, etc., but I don't ever see anyone talk of the benefits (other =
than=20
increasing bore) that those pistons are supposed to =
achieve...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>TIA, =
JT</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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