[T2] [VB] Hot engine

[Robert Mann]

    I can’t account for the lack of cooling from the water.  In a similar situation I saw 15 °C lower CHT when the water chimed in.
   
Robt Mann
’73 1600dp Devon camper

> On 8/12/2019, at 4:10 PM, Chris Dreike <cdreike at gmail.com> wrote:
> 
> Thanks David.
> Today I installed the water injection and took my bus on a freeway ride.
> (wow, empty freeways in Los Angeles today!!) Was able to take a cruise at
> 65-70 for about 10 miles down the 405 and back again. Being a cool day at
> about 63F I only saw 350F max on #3. I turned on the water injection and
> there was no discernible change in either temperature or power. Water was
> flowing at about .5 quart per hour. Maybe it needs a little more. Robert
> Mann suggested a flow rate of 1 part water to 20 of gas which would put the
> flow rate closer to .6 quarts per hour. Next time out i'll head North
> instead of South so I can climb the Santa Monica Mountain hill. It's close
> to 4 miles continuous uphill. Otherwise I may need to wait until next
> summer to get a good read on this.In the mean time I'll just drive it and
> slow down when the temp gets too high.
> One more thing, I have a porsche pulley on the alternator for extra air
> flow. Its been there all along.
> As for the oil temp, its now running at about 210F. Previously, before
> Installing an extra cooler, it was running at 260 on the highway. Its
> amazing that the oil no longer turns opaque black and only turns a
> transparent brown.
> 
> Cheers,
> Chris
> 
> On Sat, Dec 7, 2019 at 5:53 PM david raistrick <keen at icantclick.org> wrote:
> 
>> 9-10:1 should not run crazy hot unless there are other things at play.
>> a/f, oil pressure (pressure and the relief valves play a massively
>> important combined roll in cooling and upright), ignition and valve
>> timing....   hell spark plugs can come into play.
>> 
>> still sounds like there is something else hinky going on
>> 
>> 
>> 
>> 
>> 
>> --
>> Sent from my random mobile device of the week
>> 
>>> On Dec 6, 2019, at 11:46 PM, Chris Dreike <cdreike at gmail.com> wrote:
>>> 
>>> Wow,
>>> Thanks for all the great replies. First I have fuel injection on this
>>> engine. A MegaSquirt controller. Stock VW mexi-bug throttle body intake
>> and
>>> port injection.
>>> I once tried the passive water injection per Robert Mann. Didn't work so
>>> well. Even with the smallest needle (.025" o.d.) water was flowing at
>> about
>>> a gallon plus per hour. It ruined my O2 sensor, expensive.
>>> There is still the possibility that there is something else wrong. Just
>> not
>>> sure what else it could be. I've tried all sorts of air/fuel ratios and
>>> spark advance to no avail.
>>> Like I said, if this new set up doesn't work, I'll try reducing the
>>> compression. This set up should supply about a half liter per hour.
>> Should
>>> be OK on the highway.
>>> BTY I have the sensors on #1 and #3. #3 is about 20 degrees hotter than
>> #1
>>> pushing it up to 400F or beyond if I let it at 65mph on the highway.
>>> 
>>> Chris
>>> 
>>>> On Fri, Dec 6, 2019 at 7:56 PM Richard Jack <jackvw at icloud.com> wrote:
>>>> 
>>>> Chris,
>>>> 
>>>> Hello I’ve been a lust member for longer than I can remember.  I try to
>>>> post regularly, but I don’t think it ever works any longer.  Do you know
>>>> any of the admins that I could reach out to to fix that issue?
>>>> 
>>>> Any help, greatly appreciated!
>>>> 
>>>> Richard Jack
>>>> Lubbock, Texas
>>>> 
>>>>> On Dec 6, 2019, at 8:59 PM, Chris Dreike <cdreike at gmail.com> wrote:
>>>>> 
>>>>> Hi Volks,
>>>>> More on my overheating heads. I recently checked the compression on all
>>>> 4.
>>>>> I found 150, 155, 155, 160. Seems that this equates to a compression
>>>> ratio
>>>>> of about 9.5:1 to 10:1. I think I found the problem. Too much
>>>> compression.
>>>>> I am preparing to set up a water injection system. I have a replacement
>>>>> windscreen washer bottle with pump as well as requisite hoses, metering
>>>>> valve and an injection needle. I have .028" hole drilled into the
>>>> throttle
>>>>> body near the top. I'll stick in the needle and initially use a manual
>>>>> switch in the cab to turn it on. Later on I can use an output on the
>> fuel
>>>>> injection control to do this automagically. This may cool things off.
>> The
>>>>> alternative is pulling the motor to install some copper rings between
>> the
>>>>> heads and the cylinders.
>>>>> 
>>>>> Cheers,
>>>>> Chris
>>>>> 64 DD Kamper Kit
>>>>> 71 Sunroof
>>>>> _______________________________________________
>>>>> type2 mailing list
>>>>> type2 at type2.com
>>>>> https://www.type2.com/lists/type2/listinfo
>>>> 
>>>> 
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>> 
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