How hot is too hot ?

[Beesme]

We just got home took rt 3 thru twin mtns to 93 in Franconia notch! We ate At the old man of the mtns and went to flume then home . Bus ran so awesome  never over 190 deg . I do wanna investigate shutdown protection though . Jus don't know if we have it . Everything is still in place mechanical and electrical wise from greyhound , I can't find anything in electrical prints.. What would I look for such as over temp switches and relays.. I am an electrician I could install, thanx in advance for suggestions... But 8v71 sure ran awesome as she has for last 5 yrs,,,

[eagle19952]

We just got home took rt 3 thru twin mtns to 93 in Franconia notch! We ate At the old man of the mtns and went to flume then home . Bus ran so awesome  never over 190 deg . I do wanna investigate shutdown protection though . Jus don't know if we have it . Everything is still in place mechanical and electrical wise from greyhound , I can't find anything in electrical prints.. What would I look for such as over temp switches and relays.. I am an electrician I could install, thanx in advance for suggestions... But 8v71 sure ran awesome as she has for last 5 yrs,,,

does your motor have an air operated clamping/plunge device for shut down on the gov ?

how many temp sensing units are in the water jackets ?

there should be one in each head, for l+r temp gauges..

there should be one in each head for early over temp warning lights at 200-205* approx

and a shut down sender at 210 max to activate the engine kill...

oh..and a low coolant sensor in the surge tank...


or something similar...

[RJ]

Bruce -

You didn't mention it, but are you downshifting the Allison manually while climbing grades, or letting it do so on it's own?

[Geoff]

I think 205F is the right temperature for the engine warning light and delayed shut down. 

--Geoff

[eagle19952]

Bruce -

You didn't mention it, but are you downshifting the Allison manually while climbing grades, or letting it do so on it's own?

i make atleast 85% of my shifts manually

[Beesme]

Hi RJ yes I manually shift all the time . Thanx for things to look at eagle , I don't believe I have all those extra sensors though. I will look tomorrow going to concert tonite !! I did put new shocks on front last nite though  lol not that that has anything to do with heat haha jus throwin it out there . I've had a lil sway for a while now n then .

[luvrbus]

Go to www.alliedsystems.com you can find the schematics for the shutdown, problem now is there are no parts being made for the Kysor shut down for older engines and I don't Murphy is still making a system either so it all on the driver now   

[Geoff]

http://isspro.mybigcommerce.com/search.php?search_query=engine+shut+down&x=0&y=0

Isspro still makes shut down systems.

--Geoff

[luvrbus]

http://isspro.mybigcommerce.com/search.php?search_query=engine+shut+down&x=0&y=0

Isspro still makes shut down systems.

--Geoff

Aren't those for electronic controlled engines Geoff ?,I have saw those before on cars and pickups and never understood why they were even needed on a electronic engine

[eagle19952]

a couple of normally open sending temp sensors...some relays, an air switch, some warning lights, a buzzzer and a few doodads, some wire, makes a shut down...

[luvrbus]

I purchased 2-205 degree Alarmstat not long ago and could not believe the $30.00 Alarmstats cost $110.00 ea now

[Iceni John]

I purchased 2-205 degree Alarmstat not long ago and could not believe the $30.00 Alarmstats cost $110.00 ea now

A less expensive alternative are the temperature switches made by Index Controls in WA state  -  I got a 195 degree for my fan, and it was $47 from FinditParts.   They seem to be decent quality, comparable to my old Kysor Alarmstat switch.

John   

[eagle19952]

I purchased 2-205 degree Alarmstat not long ago and could not believe the $30.00 Alarmstats cost $110.00 ea now

Those are nice

Cheaper than a cracked head

[Geoff]

Aren't those for electronic controlled engines Geoff ?,I have saw those before on cars and pickups and never understood why they were even needed on a electronic engine

It looks all mechanical to me with the sending units.

[luvrbus]

It looks all mechanical to me with the sending units.

I cannot find much info on the unit it says shutdown at 225 degrees a old 2 stroke would be in Detroit heaven before 225