Date:         Tue, 31 Aug 2004 15:47:38 -0700
Reply-To:     Robert Lilley <RClilleyjr@COX.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Robert Lilley <RClilleyjr@COX.NET>
Subject:      28.8 MPG
Content-Type: text/plain; charset="us-ascii"

Well, I finally got around to replacing my air plenum, throttle body, air
runner gaskets, FI seals, setting back timing to stock setting and fixing
fuel leak in one line (previously unknown), ADDED 4 missing clamps for the
idle speed control valve circuit; Two on the rubber tube and 2 on the
grommet on the center plenum and ISCV.


I took the throttle body apart cleaned, replaced the seals and Set the gap
on the switch.  I put on a used newly painted center plenum, replaced the
gaskets under the air runners added new seals and added clamps that were
missing.  While looking at ETKA, I noticed that there were clamps on the
ISCV circuit.  Mine had none, so I ordered some.





I went for a 55 mile drive. About 10 miles were in city traffic the rest was
on highway going ~65.  I filled up just prior to taking the trip and it
lasted @1 hour in 100+ heat in Mesa AZ.  I filled up immediately after
stopping the trip.  Starting on a full tank and then filling back up it took
1.9 US gal.  While this is no means scientific, many more miles need to be
run, it is just nice to finally get the mileage back up.



I did not use AC it is soon to be fixed, I did not rev the engine high, just
normal take offs.  I used barely any pedal to keep going 65+.  The Digifant
FI is not a "racing" FI system but a "cruising" one.



Next project is the A/C along with cooling system flushing and some minor
parts replacing.



This is with a modified WBX engine.Cam, crank, ECU chip, ratio rockers,
exhaust, intake, etc.



PS When I first put my modified engine in, I was having a noticeable whistle
when I first opened the throttle.  I replaced gaskets and rebuilt the
throttle body, chased a lot of things but the whistle was still there.
Finally after changing the throttle body and center air plenum it has
virtually disappeared.  Do not know if it was the throttle body or the
center plenum.  I would suspect the center plenum because there is nothing
physically wrong with the throttle body I can detect. The shaft is tight,
seals are new and soft, no defects that  I can find.



PSS If you do not believe me, come and let's go for a ride.