HOW TO DO AN ADVANCED SEARCH.
Mon Jul 08, 2013 3:56 pm by Admin
For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.
When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).
After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …
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Cooling System
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Cooling System
Hello,
I have bought a Griffin Radiator (1-26201-x) and I now need to run the coolant hoses to the water pump, Porsche expansion tank, heater core, etc. I have never done this before and I was hoping that someone could tell me a good source for research and/or a diagram that shows hose routing.
Any help getting started would be helpful,
Thanks
I have bought a Griffin Radiator (1-26201-x) and I now need to run the coolant hoses to the water pump, Porsche expansion tank, heater core, etc. I have never done this before and I was hoping that someone could tell me a good source for research and/or a diagram that shows hose routing.
Any help getting started would be helpful,
Thanks
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
Do you have the manual? I think my heater hose diagram made it into there. Should make that part real easy!
As for the rest, post some pictures and we'll take it from there.
As for the rest, post some pictures and we'll take it from there.
Porch- Posts : 851
Join date : 2009-09-02
Age : 42
Re: Cooling System
I do have a manual, but it doesn't have any such diagram. Maybe it's in a newer version. I'll take lots of pictures this weekend and try to come up with how I think it should be done and then I'll get some opinions. Could you send me your diagram?
Thanks!
Thanks!
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
Oh man! I hate to toot my own horn, but that should have definitely made the cut into the manual.
Here's the heater hose instructions, with part numbers:
[You must be registered and logged in to see this link.]
Here's the heater hose instructions, with part numbers:
[You must be registered and logged in to see this link.]
Thought i would share how i did my heater hoses with an LS1.
I bought all parts at Autozone, so these are Autozone part numbers.
Heater control valve: 5930 ($12). This valve recirculates only when the diaphragm receives vacuum. It allows coolant to the heater core when there's no vacuum. I haven't plumbed the vacuum yet, so i'm not sure if this will be a problem or not--if anyone has any comments or suggestions to that end, please post them here!
Long hoses:
M-4106 (5/8 )
L-4204 (3/4)
Bends @ Waterpump:
M-4343 (3/4)
M-4340 (5/8 )
I also purchased some Goodyear brand coils that Autozone sells ($6 each) to make the turn around the cylinder head (see picture). Though not necessary, they're certainly helpful.
Start at the heater core and work your way forward, the L-4204 hose will be the determining factor in where your control valve sits. I'll let you decide where and what to cut off...i removed ~1" on the hoses where they go in to the heater core to start.
Any questions, lemme know!
[You must be registered and logged in to see this image.]
Porch- Posts : 851
Join date : 2009-09-02
Age : 42
Re: Cooling System
The part numbers posted above are in the shopping lists...Porch wrote:...that should have definitely made the cut into the manual.
Radiator hoses (for the Turbo radiator) are there also.
No pictures - I thought hoses should be fairly straight forward.
gt1scca- Posts : 795
Join date : 2009-06-08
Age : 55
Location : Belton, SC
Re: Cooling System
Ok, thanks. That's just what I've been looking for. I'll still have questions I'm sure. Did you get the vacuum motor to work? Also, I was reading through the thread and they mentioned another vacuum motor valve that shuts the flow off to the heater core. We don't want that to happen ever so did you just cut the line to it and the valve is normally open?
Last edited by Luke714 on Fri Jul 23, 2010 5:34 am; edited 1 time in total
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
Since I have a Griffin radiator that has it's own fill cap I don't even need the Porsche expansion tank, right? If I do how would I plum it in? The little hose at the cap could go to a dip tube in a smaller tank though.
Thanks again, I'll be able to talk a little more intelligently about this after the weekend hopefully.
Thanks again, I'll be able to talk a little more intelligently about this after the weekend hopefully.
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
The way this heater valve works is that when it's closed it just recirculates the water instead of allowing it into the heater core. It never stops the water from flowing.
You'll still have to run the coolant tank on the 944, because your radiator cap won't be "high enough" in the system (the radiator cap needs to be the highest point).
You'll still have to run the coolant tank on the 944, because your radiator cap won't be "high enough" in the system (the radiator cap needs to be the highest point).
Porch- Posts : 851
Join date : 2009-09-02
Age : 42
Re: Cooling System
I know that is the case for the H valve you have spec'd, I was referring to the below. It sounded like there was a second valve under the dash that I had to disable.
matthewb wrote:
Is the heater valve under the dash for a damper to close off the heat or does it have a valve in the coolant flow? My 86 944 had a valve on the engine bay side of the wall in one of the coolant lines. What is the function of the heater valve under the dash?
The Porsche valve stops coolant flow so the core will bleed off it's heat and it goes cold. Thats a no-no with the Chevy stuff since they require constant flow, so when the heater is off the H cycles the coolant back into the water pump.
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
Ahhh, i see!
I've never quite figured out (or really, spent the time to figure out) the vacuum system on that part of the car. If anyone has a 100% working setup i'd love to copy it.
I've never quite figured out (or really, spent the time to figure out) the vacuum system on that part of the car. If anyone has a 100% working setup i'd love to copy it.
Porch- Posts : 851
Join date : 2009-09-02
Age : 42
Re: Cooling System
right, but since the H-valve is before the other vacuum motor it doesn't matter (duh, I guess but I didn't think of that until just now). How did you hook vacuum up to the H-valve?
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
Well, that's the other part i got lazy on. Generally in the summer i leave it disconnected (recirc), and during the winter i give it a constant vacuum source. I don't know, just always had bigger fish to fry on the car, i guess.
Porch- Posts : 851
Join date : 2009-09-02
Age : 42
Re: Cooling System
New page...Porch wrote:...that should have definitely made the cut into the manual.
[You must be registered and logged in to see this image.]
Thanks Chris.
gt1scca- Posts : 795
Join date : 2009-06-08
Age : 55
Location : Belton, SC
Re: Cooling System
haha, I can understand that. I don't think it'll be a big priority for me, but I plan on driving it a little this fall and being in Maine I'll need some heat.
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
Interesting. Where can an appropriate vacuum be pulled from so that this opens and closes appropriately?
Re: Cooling System
Where do you find those hoses, are they even part numbers? They don't show up on Summit or anything.
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
I think Greg said they're autozone part numbers
spence- Posts : 684
Join date : 2009-07-21
Age : 41
Location : St.Catharines, Ontario, Canada
Re: Cooling System
Thanks,
I can't find them on their site, but they do have a huge selection of heater hoses so I'll stop at a store on my way home and see if they can help me out.
I can't find them on their site, but they do have a huge selection of heater hoses so I'll stop at a store on my way home and see if they can help me out.
Luke714- Posts : 441
Join date : 2009-12-30
Age : 33
Location : Maine
Re: Cooling System
I wish they where listed online.... Cause there's not an Autozone in Canada....
spence- Posts : 684
Join date : 2009-07-21
Age : 41
Location : St.Catharines, Ontario, Canada
Re: Cooling System
Is there an Autozone-ay?
Dawgz83948- Posts : 603
Join date : 2009-06-08
Location : Ca.
Re: Cooling System
You mean eh? LOL I serisously don't even know anybody that talks like that.... Maybe way up north in Alberta or something....
spence- Posts : 684
Join date : 2009-07-21
Age : 41
Location : St.Catharines, Ontario, Canada
Re: Cooling System
That would not be too hard to wire to a soleniod and a switch so you can trigger vacuum (or not) from the cabin.
Dawgz83948- Posts : 603
Join date : 2009-06-08
Location : Ca.
Re: Cooling System
Only people from certain parts of Canada say "eh"
Well crap! I can't find those part numbers anywhere either. Autozone's website seems to imply that they switched to Dayco brand heater hoses. The numbers i gave were for Kelley Springfield (Goodyears budget brand). If someone goes to the store with those part numbers, i'm sure they'll have a book somewhere that could be used to get the Dayco part numbers, but i can't seem to find anything online.
Well crap! I can't find those part numbers anywhere either. Autozone's website seems to imply that they switched to Dayco brand heater hoses. The numbers i gave were for Kelley Springfield (Goodyears budget brand). If someone goes to the store with those part numbers, i'm sure they'll have a book somewhere that could be used to get the Dayco part numbers, but i can't seem to find anything online.
Porch- Posts : 851
Join date : 2009-09-02
Age : 42
Re: Cooling System
I read through the post linked to the old board. It looks like the exact same thread is being created here. The question was never resolved over there for vaccum control there either. Is there a way to figure this out definitively?
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