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Forced Induction ?: X-Flow versus JH head
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The 200 Hp should be a piece of cake with minor boost if you're planning =
aftermarket EFI.
Couple thoughts from doing an ABA cross flow conversion into my nephew's =
Jetta and my own aborted turbo install.
Getting the intake away from the exhaust is good, but with the cross =
flow it's even better because it allows you to turn the turbo over. More =
clearance to the firewall and more room for the downpipe which is pretty =
squashed in a normal 8V installation.
Also, my nephew's ABA (internally stock, TT exhaust, home grown CAI, =
stock ignition, Megasquirt EFI) is amazingly spunky compared to my ABA =
short block, TT ported GTI head, Haltech EMS considering it's head is =
STOCK. The cross flow head flows really well.
Last, the stock ABA TB has some advantages compared to the 16V TB. First =
it bolts right to the cross flow manifold. Second, it already has a TPS, =
which you need for any aftermarket EFI. Third, a regular old round pipe =
can mate to it with a simple silicon hose. Doesn't sound like a big =
deal, but I've fabbed an adapter from round pipe to the funky oval TB =
intake and it would have been simpler to just cut the end off the =
manifold and weld on a flange to mount the single plate ABA TB.
Throttle linkage to the ABA TB should mate right up to your existing =
throttle cable.
Only issue in my mind is manifold clearance to the hood.
HTH
Dan=20
----- Original Message -----=20
From: Jeff Toomasson=20
To: scirocco-l@scirocco.org=20
Sent: Saturday, February 15, 2003 11:53 PM
Subject: Forced Induction ?: X-Flow versus JH head
I posted this question on the Vortex FI board and got =
less-than-desirable answers. Maybe you guys can help:
I have a complete JH engine that was rebuilt ~15k miles ago by the PO. =
But it seems apparent to me that a X-flow head would offer a better =
advantage in terms of distance from the heat of the exhaust manifold =
versus the JH head (not to mention supposed closer proximity to any IC =
piping...)
But using a x-flow head in an mk1 scirocco would most likely require =
some reasonably extensive modifications to the intake and throttle =
linkages, right?=20
It's not that I'd be opposed to that or the $$ required if the benefit =
was significant enough, I'm just curious if the bang is worth the buck =
in this case... The goal is:=20
~200hp (streetable (@ ~15psi?)), scirocco 16v throttle body, A5KTQ IC, =
and SDS (most likely) EFI
Thanks in advance, JT
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<DIV><FONT face=3DArial size=3D2>The 200 Hp should be a piece of cake =
with minor=20
boost if you're planning aftermarket EFI.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Couple thoughts from doing an ABA cross =
flow=20
conversion into my nephew's Jetta and my own aborted turbo =
install.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Getting the intake away from the =
exhaust is good,=20
but with the cross flow it's even better because it allows you to turn =
the turbo=20
over. More clearance to the firewall and more room for the downpipe =
which is=20
pretty squashed in a normal 8V installation.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Also, my nephew's ABA (internally =
stock, TT=20
exhaust, home grown CAI, stock ignition, Megasquirt EFI) is amazingly =
spunky=20
compared to my ABA short block, TT ported GTI head, Haltech EMS =
considering it's=20
head is STOCK. The cross flow head flows really well.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Last, the stock ABA TB has some =
advantages compared=20
to the 16V TB. First it bolts right to the cross flow manifold. Second, =
it=20
already has a TPS, which you need for any aftermarket EFI. Third, a =
regular old=20
round pipe can mate to it with a simple silicon hose. Doesn't sound like =
a big=20
deal, but I've fabbed an adapter from round pipe to the funky oval TB =
intake and=20
it would have been simpler to just cut the end off the manifold and weld =
on a=20
flange to mount the single plate ABA TB.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Throttle linkage to the ABA TB should =
mate right up=20
to your existing throttle cable.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Only issue in my mind is manifold =
clearance to the=20
hood.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>HTH</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Dan</FONT> </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> Saturday, February 15, =
2003 11:53=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Forced Induction ?: =
X-Flow=20
versus JH head</DIV>
<DIV><BR></DIV>
<P>I posted this question on the Vortex FI board and got =
less-than-desirable=20
answers. Maybe you guys can help:</P>
<P>I have a complete JH engine that was rebuilt ~15k miles ago by =
the PO.=20
But it seems apparent to me that a X-flow head would offer a better =
advantage=20
in terms of distance from the heat of the exhaust manifold versus the =
JH head=20
(not to mention supposed closer proximity to any IC piping...)</P>
<P>But using a x-flow head in an mk1 scirocco would most likely =
require some=20
reasonably extensive modifications to the intake and throttle =
linkages, right?=20
<P>It's not that I'd be opposed to that or the $$ required if the =
benefit was=20
significant enough, I'm just curious if the bang is worth the buck in =
this=20
case... <IMG border=3D0 name=3Dicon =
src=3D"http://www.vwvortex.com/vwbb/sly.gif";>=20
The goal is:=20
<P>~200hp (streetable (@ ~15psi?)), scirocco 16v throttle body, A5KTQ =
IC, and=20
SDS (most likely) EFI</P>
<P>Thanks in advance, JT</P>
<P><BR>
<HR SIZE=3D1>
Do you Yahoo!?<BR><A=20
=
href=3D"http://rd.yahoo.com/O=3D1/I=3Dbrandr/vday03/text/flow/*http://sho=
pping.yahoo.com/shop?d=3Dbrowse&id=3D20146735">Yahoo!=20
Shopping</A> - Send Flowers for Valentine's =
Day</BLOCKQUOTE></BODY></HTML>
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