SOHC thermostat housing water outlet

Eric · Post by **Eric** » Fri Aug 24, 2007 7:45 am

I was at the junk yard and noticed the SOHC engines have a different thermostat housing water outlet, one that would clear the firewall a lot better. So, I bought it and tried it out. It fits to the thermo housing just the same as the DOHC part, but doesn't sit angled towards the firewall like the DOHC part.

Not sure if anyone else has stumbled upon this.

peregrine · Post by **peregrine** » Fri Aug 24, 2007 10:40 am

oh snap. time to go look for one of these. thanks dude.

75COLT · Post by **75COLT** » Fri Aug 24, 2007 1:25 pm

thanks for the info. what vehicles should I look for at the yards? or I guess which is the most common to have the sohc motor?

screemin eagle · Post by **screemin eagle** » Fri Aug 24, 2007 2:58 pm

if thats the case the 1.8 sohc galant housing might be better i dont think it has the radiator cap on it so you can use the fill on the radiator

ShaggyZ · Post by **ShaggyZ** » Fri Aug 24, 2007 5:30 pm

screemin eagle wrote:if thats the case the 1.8 sohc galant housing might be better i dont think it has the radiator cap on it so you can use the fill on the radiator

True, unless the top of your radiator is lower than the housing. I expect most people would want the pressure cap on the thermostat housing.

Thanks for reporting your findings, Eric; I find that to be a big help. I may forget about routing the coolant throught the front altogether as you're helping me make my decision. Though, I still like the idea of running the big line from the thermostat housing under the intake manifold instead of by the exhaust manifold.

Eric · Post by **Eric** » Fri Aug 24, 2007 5:42 pm

If I find a galant at the yard I'll pick one of those up since my radiator is higher. Although I do like to have the cap in back so I can fill the radiator to a certain point with the cap in back removed and thus letting air out. If that even really helps when filling, I'm not sure...

I'm not exact on the year, but it was a 1G T/E/L DSM SOHC (that you normally pass up just after popping the hood

).

Mitsu-San · Post by **Mitsu-San** » Fri Aug 24, 2007 9:00 pm

whoa sweet! Now that's just less money I have to spend on the thermostat housing relocator thingamajiggy. Looks like I need to run out to the boneyard tomorrow. I need some new sensors anyway cause mine are all crushed and broke on the housing I have now.

89coltgt · Post by **89coltgt** » Sat Aug 25, 2007 4:14 am

Great find. I will have to snag one of these as well

www.18u · Post by **www.18u** » Sun Aug 26, 2007 6:38 am

Wow thats exactly what im looking for

I havn't done anything with my car for months because i hadn't found a way that i liked to overcome this problem.Would it be possible to send one to Australia or to give us a part number because we never got those models down under.Hats off to you for finding that now my Starion will be running in no time.

S0LJAH · Post by **S0LJAH** » Sun Aug 26, 2007 10:39 am

nice find mate

pity for me i dont even have that much room between my motor and firewall

dont think it would work with people running highmount turbos anyway, which i am

ShaggyZ · Post by **ShaggyZ** » Sun Aug 26, 2007 11:14 pm

S0LJAH wrote:dont think it would work with people running highmount turbos anyway, which i am

Why not? It would be easy enough to just route the water line under the manifold or to the other side of the engine.

4g63mightymax · Post by **4g63mightymax** » Mon Aug 27, 2007 4:15 pm

I am kind of shocked that this hasn't come up before. I have been using this thermostat housing for quite some time now, I am sorry I didn't bring it to everybody's attention sooner! Just be sure you use the air bleeder on the thermostat housing when you install it, because air gets trapped in there very easily, and it pukes out antifreeze if you don't get it all out. Here are some pics of my setup (in the spring time, its a little cleaner now)

and if you want more, you can see the full build HERE

-Jeremy

S0LJAH · Post by **S0LJAH** » Tue Aug 28, 2007 9:15 am

how much further back than the cas does it stick out?
could someone measure for me?just intereted in firewall clearance

TruckA · Post by **TruckA** » Tue Aug 28, 2007 9:28 am

That's what I'm running in my truck, I thought I had made a post about it here, but I must have posted it on mightyd50.com only. I picked over a 1993 laser with the 1.8 liter, and it had the same thermostat neck that will parallel the firewall making installation just a little bit easier.

David

Edit, in the pictures, the stock 4g63t housing is on top, you can see how the non-turbo outlet lines up better against the firewall.

www.18u · Post by **www.18u** » Wed Aug 29, 2007 7:02 am

there are a ton of these at the yards. I'll go stock up on them for any of you aussie guys who might need one. I'm sure they wont cost much at all either. I woulda never thought a saturn egine would share thermo housings with a damn sirius engine

Your the man Shaun

Bill Hincher · Post by **Bill Hincher** » Thu Aug 30, 2007 8:38 am

you know? you can lead a horse to water, but you cant make him drink!
DJ has proven you can use the front exit for the cooling, there is no need for the rear exit , if you know how its done, yeah you gotta change the coolant flow , but thats two holes.
thats what Hod Rods are all about, trying new stuff differnt ways.

Bill Hincher · Post by **Bill Hincher** » Thu Aug 30, 2007 3:58 pm

yeah, I wasnt thinking, sorry

Post by **DJpowerHaus** » Thu Aug 30, 2007 4:51 pm

I think this thermostat info is GREAT to have around. The more options the better. if it fits without moving the engine forward at all, then I'm all for it!

ShaggyZ · Post by **ShaggyZ** » Thu Aug 30, 2007 6:17 pm

DJpowerHaus wrote:I think this thermostat info is GREAT to have around. The more options the better. if it fits without moving the engine forward at all, then I'm all for it!

Ontop that, if I go out the rear, I can clean up the front of the engine. I'm thinking about fiberglassing the timing cover so there are no holes there (ie the engine support bracket that also connecs to the A/C will be coming out)

89coltgt · Post by **89coltgt** » Fri Aug 31, 2007 3:55 am

smog wrote:anyone ever cut the engine support bracket off? That thing sure is ugly.

My plans are to cut it off flush with the t-belt cover and paint it black.

S0LJAH · Post by **S0LJAH** » Fri Aug 31, 2007 10:53 am

smog wrote:i's a bolt on bill. Not all of us have a fab shop

or money to blow on busted heads

i dont think it would as cas doesnt fit without moving forward does it?(i dont own a starion so not sure, i know it doesnt in my car)
and the outlet sits further back than that

Eric · Post by **Eric** » Fri Aug 31, 2007 11:36 am

Sorry Bill, for not sticking to the front-exit solution. I decided that having to worry about the head cooling on top of everything else was just too much to handle in one shot.

Here's another pic, showing the room it takes up. As you can see it sits no further back than the lower portion of the thermostat housing.

I still can't figure out where the hell that oil is coming from:

www.18u · Post by **www.18u** » Sun Sep 02, 2007 3:05 am

I still can't figure out where the hell that oil is coming from:

I think that the oil is coming from the bolts in your rocker cover.There is two types with different lengths and the centre ones are different.Maybe try swapping these around.

89coltgt · Post by **89coltgt** » Sun Sep 02, 2007 3:26 am

www.18u wrote:
I still can't figure out where the hell that oil is coming from:
I think that the oil is coming from the bolts in your rocker cover.There is two types with different lengths and the centre ones are different.Maybe try swapping these around.

It could also be from an old hardened oil cap seal.

Eric · Post by **Eric** » Sun Sep 02, 2007 1:29 pm

Yep, I am leaning towards the bolts. I am using bolts that I picked up from the hardware store. Thanks. Sorry to take the post off-topic...

www.18u · Post by **www.18u** » Fri Oct 05, 2007 9:14 pm

Can anyone plaese tell me the part number for this thermostat housing? Because im over in Australia i don't wish to order the wrong one and be stuck with a housing that i cannot use. I have had a friend search through caps but there is 3 different part numbers and only one generic picture.Otherwise does anyone wish to pull one or 2 off a car and ill buy them off you and pay for postage.

Eric · Post by **Eric** » Sun Oct 07, 2007 12:22 pm

I can pick some up at my junk yard. I know they will have some of these. The only problem is that I won't be able to go till next weekend since there's no way I can make it to the yard in time on a week night.

89coltgt · Post by **89coltgt** » Sun Oct 07, 2007 12:45 pm

What galants had the housing that shoots straight up?

www.18u · Post by **www.18u** » Mon Oct 08, 2007 6:58 am

I would like the whole thermostat housing including the cap if possible.Whoever gets there first just shoot me a pm and ill make sure you get fixed up asap.Thanks again guys

AllanL · Post by **AllanL** » Mon Aug 11, 2008 10:53 pm

any chance anybody still have this SOHC NA thermostat housing lying around?

the ones without the caps will be fine...

thanks

SOB Racing · Post by **SOB Racing** » Thu Jun 07, 2012 9:26 am

Does anyone know a part number for this thermostat housing?

RaptorReed · Post by **RaptorReed** » Tue Jun 12, 2012 8:53 am

the ones that will sit parallel to the head are off a 4g37, no part number listed on ASA. Find a 4g37 powered vehicle, such as a '89 DSM (Flat hood, no camshaft bulge), or Galant, or whatever else came fitted with that motor.