Date: Thu, 10 Oct 2013 21:57:58 -0700
Reply-To: Don Hanson <dhanson928@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Don Hanson <dhanson928@GMAIL.COM>
Subject: Re: Runaway Engine RPMs
In-Reply-To: <52576813.3050808@turbovans.com>
Content-Type: text/plain; charset=ISO-8859-1
I wouldn't be too concerned about a short period of 3K no-load rpm.
Early Friday post by a few hours...
I'm amazed at how low in RPMs the WBX motors seem to like to make their
'power'
I have a Honda 600 cc sport bike, of about the same era as the last WBX
motors that doesn't even come on until 8000 rpms and is red lined at
14,000rpm. Heck, it warms itself up at 3000rpms before the EFI closes
down the enrichment mode. It also makes the same HP as a Vanagon
motor..but it weighs 365lbs (is that really almost 10:1 better ratio in HP
to Weight?) and has a six speed gearbox.. of course, you can't sleep in
it or carry a sheet of plywood..
My 2.0 inline VW begins to make power at about 2500 revs and keeps
getting stronger till about 5000, with it's best power about
3700rpms...perhaps that is why those who are used to the standard WBX
Vanagons don't feel comfortable right away driving an inline powered
Vanagon....
and my one looong ride in a diesel vanagon? The driver was going uphill
at 25 in 5th gear before he shifted down to 3rd or something...didn't seem
to faze him or change the glacial pace of our accent up this long
hill....When my 50-yr old former bicycle racer S.O. passed us (she only
held us off for a few hundred yards, but still) on her bicycle going up
that 7% climb...that is when I decided I just couldn't own a stock diesel
Westie...
Every motor seems to have a sweet-spot. My ABA/8-valve inline van
seems to like around 3700rpms (65mph in 5th) My Honda likes to cruise at
6000-8000rpms, my Powerstroke diesel truck likes 2300.. My S.O.s Subaru
seems to shift a lot for no apparent reason, but it seems to like to lug
along...maybe that is why Vanagon conversion peeps like those motors in
their vans...similar power band, just more of it.
Ramble ramble...
On Thu, Oct 10, 2013 at 7:53 PM, Scott Daniel <scottdaniel@turbovans.com>wrote:
> I wouldn't be too concerned about a short period of 3K no-load rpm.
> If it was brand new rings or something ..then yes, but on a well used
> engine that's fairly healthy, with decent oil in it, I wouldn't give it
> a thought.
>
> not quite the same engine..
> and, the official way to adjust the max rpm, per Bentley, on a diesel
> vanagon engine is set the max throttle lever stop screw at 5,050 rpm (
> or something close to that ) and take the reading and do the adjustment
> with no loadat that rpm.
>
>
>
>
>
> On 10/10/2013 7:09 PM, John Meeks wrote:
>
>> Right Stuart...
>>
>> I've checked that nothing in that linkage is jammed or stuck. AND it
>> stopped happening after a cooldown.and restart but not after a momentary
>> shutdown.
>>
>> I have the Digifant Pro Training manual on my phone. That's logic. I like
>> Scotts' idle control unit idea . Pro Training has s page on that.
>>
>> 3000 RPM with no load for more than a few seconds IS pretty disconcerting.
>>
>> John
>> '
>>
>>
>> On Thu, Oct 10, 2013 at 9:35 PM, Stuart MacMillan <stuartmacm@gmail.com
>> >wrote:
>>
>> Definitely follow logical troubleshooting procedure, which means check
>>> the
>>> simple stuff first. That's always the mechanical things you can see and
>>> feel. Electrons are only detected by magic.
>>>
>>> I've had this happen and it was something that dropped on the throttle
>>> lever
>>> and jammed it. Broken cruise control cable I think. The good thing is
>>> the
>>> ECU will cut off the injectors before the engine self-destructs!
>>>
>>> At least that's what happened in my case, but at the time I thought I
>>> destroyed it.
>>>
>>> Stuart
>>>
>>>
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