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ABA / JH question
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To be polite, your buddy is full of **it!
The distance from the crank main bearing centerline to the top of the =
block is going to be roughly equal to half the stroke+the rod length+the =
piston pin height. (and once again) If you can't visualize this you =
shouldn't be messing around with basic engine components!
The ABA rod is 159mm, while the JH rod is 144. ABA stroke is 92.8 while =
JH is 86.4. Piston pin height of the ABA is 2.2mm less than the JH. NET? =
The ABA piston, rod, crank combination will stick out of the top of the =
JH block by 16mm!
Why did you think VW made the block taller? So the piston would be 16mm =
down the bore and the engine would have a 4:1 CR?
I'm also curious why you would think that welding a couple downpipes =
could ever be more work than building a short block?
Personally, I'd bore the block for some Chevy SB pistons. That seems =
easiest to me. ;^)
Dan
----- Original Message -----=20
From: Scirocco-Al=20
To: scirocco=20
Sent: Friday, March 29, 2002 8:39 PM
Subject: ABA / JH question
A buddy of mine said that he's been putting ABA cranks, connecting =
rods and pistions into bored out JH blocks. Is this really possible? =
I'd much rather do this than mess with an exhaust amnifold that needs to =
be 15mm higher. That and I have one of both engines on my garage floor =
right now.
Alan=20
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<DIV><FONT face=3DArial size=3D2>To be polite, your buddy is full of=20
**it!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>The distance from the crank main =
bearing centerline=20
to the top of the block is going to be roughly equal to half the =
stroke+the rod=20
length+the piston pin height. (and once again) If you can't visualize =
this you=20
shouldn't be messing around with basic engine components!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>The ABA rod is 159mm, while the JH =
rod is=20
144. ABA stroke is 92.8 while JH is 86.4. Piston pin height of the ABA =
is 2.2mm=20
less than the JH. NET? The ABA piston, rod, crank combination will stick =
out of=20
the top of the JH block by 16mm!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Why did you think VW made the =
block taller? So=20
the piston would be 16mm down the bore and the engine would have a 4:1=20
CR?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I'm also curious why you would think =
that welding a=20
couple downpipes could ever be more work than building a short=20
block?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Personally, I'd bore the block for some =
Chevy SB=20
pistons. That seems easiest to me. ;^)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Dan</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
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<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dscirocco-Al@insight.rr.com=20
href=3D"mailto:scirocco-Al@insight.rr.com";>Scirocco-Al</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dscirocco-l@scirocco.org=20
href=3D"mailto:scirocco-l@scirocco.org";>scirocco</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, March 29, 2002 =
8:39=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> ABA / JH =
question</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>A buddy of mine said that he's been =
putting ABA=20
cranks, connecting rods and pistions into bored out JH blocks. =
Is this=20
really possible? I'd much rather do this than mess with an =
exhaust=20
amnifold that needs to be 15mm higher. That and I have one of=20
both engines on my garage floor right now.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial =
size=3D2>Alan</FONT> </DIV></BLOCKQUOTE></BODY></HTML>
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