Date:         Sun, 24 Dec 2006 20:12:28 -0500
Reply-To:     Greg Potts <greg@POTTSFAMILY.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Greg Potts <greg@POTTSFAMILY.CA>
Subject:      Re: Aircooled Cylinder Head Temps - first observations
Comments: To: Mike Rouby <mikerouby@yahoo.com>
In-Reply-To:  <961604.88552.qm@web37402.mail.mud.yahoo.com>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

Hi Mike,

I can say from experience that the BugPack header and muffler will
increase power slightly, and will sound nice and throaty. Can't say
as I've ever seen one affect the CHT gauge reading though.

The bad news is that they will only last two years at maximum before
coming apart. After that they are loud as all get out.

I prefer the stock exhaust for reliability & economy.


Happy Trails,

Greg Potts
1973/74/77/79 Westfakia "Bob The Tomato
www.pottsfamily.ca




On 24-Dec-06, at 8:04 PM, Mike Rouby wrote:

> My Type 4 mechanic recommend throwing away my stock exhaust (which
> included a catalytic converter) in favor of a Bugpack header &
> muffler combo.  Not only in the interest of power, but apparently
> for lower cylinder head temps.
>
> Since I added the CHT guage after the exhaust upgrade, I can't be
> too sure of this.
>
> Outside temp during trip ~ 50 degs.
> 1 hour long trip.
> Full loaded w/ family of four and full propane & water tanks.
> Downshifting to third under 55mph.
>
>
> Greg Potts <greg@pottsfamily.ca> wrote:
> Hi Mike,
>
> Sounds excellent to me. With a load on my baywindow pulls 375-420
> degrees. A vanagon has the same type4 engine as my bus, so 450 is
> tolerable, sustained driving above 475 is to be avoided.
>
>
> Happy Trails,
>
> Greg Potts
> 1973/74/77/79 Westfakia "Bob The Tomato
> www.pottsfamily.ca
>
>
>
> On 24-Dec-06, at 5:28 PM, Mike Rouby wrote:
>
>> Took my second camping trip in my 82 Westy ever.  This time around
>> I had a CHT guage added.  On the highway it would be between 300
>> and 400 degs.  Never quite reaching 400 - hovering normally around
>> 350 degs.  375 when climbing hills or driving at 70 mph down the
>> HOV lane.
>>
>> Is that normal?  My Bug mechanic says high should be 375 for a Bug.
>>
>> Anyone getting similar results??
>
>
>