[T2] Fwd: [Q] Overheating

[dcm7293 at gmail.com]

Sent from my iPhone

Begin forwarded message:

> From: Sami Dakhlia <sami.dakhlia at gmail.com>
> Date: September 1, 2015 at 12:10:01 PM CDT
> To: David C Matthews <dcm7293 at gmail.com>
> Subject: Re: [T2] [Q] Overheating
> 
> Some more thoughts:
> 
> Check spark plug color: they should be brown or slightly black. If
> they're grey, you may be running too lean.
> Check timing at full advance.
> Check valve adjustment.
> 
>> On Tue, Sep 1, 2015 at 6:22 PM, Sami Dakhlia <sami.dakhlia at gmail.com> wrote:
>> Thanks. So the oil is hot, but you will also want to know if the heads
>> are too hot.
>> Here is a link to something I wrote up a long time ago.
>> http://www.type2.com/dakhlia/overheating.html
>> See if you can figure out if it's a heat generation or a cooling problem.
>> Is the thermostat working? And if it failed, did it fail in the open
>> position (i.e., where plenty of air does flow to the oil cooler)?
>> 
>>> On Tue, Sep 1, 2015 at 5:44 PM, David C Matthews <dcm7293 at gmail.com> wrote:
>>> My bus is a 1971 Westy with a custom (oversized) engine. To give you an idea
>>> of output, it was designed to produce 135 HP. It's hasn't been put on a
>>> dyno, however.
>>> 
>>> The engine has less than 5000 miles on it, although I'm not sure when the
>>> problem started. I know it's running hot 'cause after an hour or so of
>>> driving, you can't touch the dipstick -- it's that hot. Also, it was running
>>> so hot that some of the residual plastic in the ceiling of the engine
>>> compartment (took out the old "straw") started to melt. I went crazy with
>>> the fire extinguisher before figuring out what was smoldering. Fun.
>>> 
>>> FWIW, the side cooling compartment/baffles on the body are clear (no bird's
>>> nests or any obstructions).
>>> 
>>> David
>>> 
>>> 
>>> 
>>> On Tue, Sep 1, 2015 at 10:27 AM, Sami Dakhlia <sami.dakhlia at gmail.com>
>>> wrote:
>>>> 
>>>> Hi David,
>>>> Please tell us more: what year bus, what kind of engine, when did the
>>>> problem start, how do you know it's running hot?
>>>> Cheers,
>>>> Sami
>>>> 
>>>> On Tue, Sep 1, 2015 at 5:03 PM, David C Matthews <dcm7293 at gmail.com>
>>>> wrote:
>>>>> My Type2 is overheating (big surprise). What started as a concern has
>>>>> now
>>>>> turned into an (almost) full-blown mess. Can you say "about to swallow a
>>>>> valve" and "needs new heads"?
>>>>> 
>>>>> Problem is, until I resolve the overheating issue, can't feel good about
>>>>> spending money to fix what's broken. But, the chicken-and-the-egg
>>>>> problem
>>>>> being what it is, can't diagnose the overheating problem until I get her
>>>>> running again.
>>>>> 
>>>>> Thoughts?
>>>>> 
>>>>> David
>>>>> _______________________________________________
>>>>> type2 mailing list
>>>>> type2 at type2.com
>>>>> https://www.type2.com/lists/type2/listinfo
>>> 
>>>