Date: Wed, 8 Jan 2003 09:37:14 -0600
Reply-To: Sean Solowiej <sean@ORIGINALIDIOT.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Sean Solowiej <sean@ORIGINALIDIOT.COM>
Subject: Re: Great Engine test stand event, part 2
In-Reply-To: <20030107.203544.724.2.wilden1@juno.com>
Content-type: text/plain; charset="US-ASCII"
Stan,
Your system sounds like it's doing the trick, but if you want to improve the
manifold setup, I've found that the manifold for the Weber progressive carb
kit (for the type IV) will also fit nicely in place of the steel plenum of
the waterboxer - leaving the waterboxer's 4 down-tubes in place.
Maybe you can find one somewhere - the kit new (with carb) is around $300.
Sean
on 1/7/03 8:33 PM, Stan Wilder at wilden1@JUNO.COM wrote:
> While setting up the engine stand I discovered several things; First VWs
> don't like to have the Carb 24" from the cylinders. The accelerator surge
> pump on my tiny Weber Carb has very little value at all. It causes
> backfiring when you accelerate the engine quickly.
> Case in point; I made up a plug consisting of two rubber washers for the
> big hole (VW throttle body mount) and installed it with two steel washers
> that held "the plug" in place and sealed the hole. It blew out once and
> required reinstalling, no big deal.
> Later the same day it blew out again ..... but boy I must have had some
> fuel laying in the bottom of the intake plenum because ..............
> WoW! it really blasted out on the next backfire. I'm estimating the range
> at about 100 yards and about all I can say after a thorough search that
> It is part of the neighborhood landscape now, unfound.
> I'm still not ready to post the pictures of this strange apparatus but
> I'll get "A Round Tuit", soon.
> I'm not recommending that everybody build an engine test stand but I've
> come up with some real revelations after running in the first engine.
> First of those being that: If the engine is out of the vehicle during
> this process It makes very little noise on the run in routine. When
> engines are run-in in the vehicle it is very noisy process since every
> little tick or clack is amplified by the surrounding sheet metal and
> engine bay.
> I had expected some tremendous thrashing and smoking of the engine but
> the engine simply started and ran.
> Simple enough.
> I ran the engine for 20 minutes at 2000 rpms and monitored the oil temp,
> oil pressure and vacuum.
> Everything was satisfactory so I'll restart the engine tomorrow to warm
> it and change the engine oil.
> I'm then going to run it in for another 8 hours at 2000 rpms on the next
> oil change.
> This whole rig is on a caster mounted steel frame so I just roll it into
> the garage at night and all I need to do the next day is set the fuel
> tank on it and go again.
> I didn't hook the blue wire from the alternator to anything but the
> engine continues to run without battery support (I thought this was the
> excite for the alternator). I suppose it could be running on less than
> full alternator charge. It was my intention to hook this wire to the
> starter switch for momentary excitement of the alternator but just didn't
> get it done.
>
> Stan Wilder
>
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