WAS re. octane question IS what octane per cam

[Ben Swann]

Now that's more radical than I'm familiar with for street applications in a
N/A setup.  My understanding after doing some basic cam research is to save
the hotter cams(over 270) for the track as you'll incur poor lower RPM
drivavbility.  Also higher lift and duration that can experience great gains
in higher compression motors are not as beneficial in lower compression
engines.  These are generalities of course - check with Elgin re. a grind
recommendation for your specific application. I'm sure that once you get
over the not so rock steady idle, the 276 will really take off at higher
RPM!

The comments I made regarding octane may also not apply in this case either,
but I suspect higher octane may be helpful.

Ben
----- Original Message ----- 
From: "Pedro Faria" <quattrocs at hotmail.com>
To: <benswann at comcast.net>; <quattro at audifans.com>
Cc: <syncronized at yahoogroups.com>
Sent: Thursday, January 08, 2004 12:04 PM
Subject: WAS re. octane question IS what octane per cam


> I'm in the midst of installing a 276 cam on my NA 4kq, and while i'm in
> there replace lifters
>
> what fuel should i be using after the installation , in the past i have
> always used 87 oct, and once in a while injector cleaner
>
> TIA
> Pedro
>
>
>
>
> >From: "Ben Swann" <benswann at comcast.net>
> >Reply-To: Ben Swann <benswann at comcast.net>
> >To: <quattro at audifans.com>
> >CC: syncronized at yahoogroups.com
> >Subject: re. octane question
> >Date: Thu, 8 Jan 2004 11:53:55 -0500
> >
> >IMO it is unecessary, even wasteful to use high octane in stock 4kq with
> >2.2l CIS-E.  That applies to the Quantum Synchro as well, which uses
pretty
> >much identical engine.  Even with 264 cam and advanced timing(7 deg. over
> >stock), I have been using 89(overkill) in summer and 87 in winter.
Engine
> >revs.quickly to the redline(yes around 6800RPM) with this setup - get 4kq
> >relay to allow high rev. in Synchro.  Lower octane fuel doesn't hurt and
I
> >believe it may actually help performance, especially in the winter.
> >
> >BTW, I obtained similar power increase results with installation of
NG/5kt
> >cam in another 4kq - not quite what the 264 does, but the NG cam did make
> >for better torque and rev. at least by my unscientific observations.
> >
> >Now if your running high compression - such as NG/NF engine, or
> >turbocharged, then you want to run with the higher octane fuels.  For
those
> >wanting to rev. higher, consider using Synthetic oil - I have been using
> >Syntec 5W50 year round with great results for many years and will not use
> >any other after trying several - just my experience and not wanting to
> >start synthoil thread.
> >
> >As always, YMMV and happy Quattroing and Syncroing(used to be Dashering)
> >thru the snow!
> >
> >Ben
> >http://www.homestead.com/ben_swann/myaudi.html
> >
> >[Date: Wed, 7 Jan 2004 17:56:56 -0800
> >From: "Tom Love" <theloves at localaccess.com>
> >Subject: octane question
> >To: "QUATTRO LIST" <quattro at audifans.com>
> >Message-ID: <002d01c3d58a$b27326c0$0500a8c0 at attbi.com>
> >Content-Type: text/plain; charset="iso-8859-1"
> >
> >I have a question as to what US octane is preferred for our 4kq jt
engines
> >(or in that case any 2.1, 2.2 stock 5 cyl NA motors).
> >
> >  This is a issue floating around on the quantum syncro list and since I
> >drive both jt code cars I thought I would throw this question to this
list
> >for comments and suggestions.
> >
> >Any input is appreciated.
> >
> >btw I use 91 for what it's worth]
> >_______________________________________________
> >quattro mailing list
> >quattro at audifans.com
> >http://www.audifans.com/mailman/listinfo/quattro
>
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