Where to connect steam tube LS2/LS7?
#21
9 Second Club/LS1TECH Sponsor
iTrader: (14)
Originally Posted by cam
I got a little curious about this so I checked and found according to the GM LS1 swap installation guide ( pn 88959384 ) it states on page 7;
Quote:
Connect cylinder head air bleeds and coolant return line to outlet radiator hose or return side of radiator. Cylinder heads air bleeds must connect to fill bottle or highest point of cooling system above coolant level!
Thats an exact quote they even put the exclamation mark so....
Then it says;
Quote:
NOTE: failure to connect the cylinder head air bleeds properly can cause an internal air lock and result in engine damage
take it as you will
Quote:
Connect cylinder head air bleeds and coolant return line to outlet radiator hose or return side of radiator. Cylinder heads air bleeds must connect to fill bottle or highest point of cooling system above coolant level!
Thats an exact quote they even put the exclamation mark so....
Then it says;
Quote:
NOTE: failure to connect the cylinder head air bleeds properly can cause an internal air lock and result in engine damage
take it as you will
I added a ruler to the flat boss on the water pump to get an idea of the relationship of the return port to the water pump/cooling system height.
Originally Posted by cam
I only wish to offer that of best knowledge possible.
Tapping into the top of the water pump should work just fine.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
Last edited by Speartech; 11-15-2011 at 07:12 AM.
#22
TECH Senior Member
iTrader: (7)
Originally Posted by Speartech
Here's a front view of the Envoy/Trailblazer heater hose assembly showing the actual location of the steam port nipple:
I added a ruler to the flat boss on the water pump to get an idea of the relationship of the return port to the water pump/cooling system height.
Me too!
Tapping into the top of the water pump should work just fine.
I added a ruler to the flat boss on the water pump to get an idea of the relationship of the return port to the water pump/cooling system height.
Me too!
Tapping into the top of the water pump should work just fine.
Andrew
#24
TECH Junkie
iTrader: (9)
Tapping into the top of the water pump should work just fine.
#25
Originally Posted by Andy1
BTW, these guys have a nice steam vent adapter fror 1/8 NPT which allows for running any kind of line; AN, hose, etc. They're cheap as well.
http://s41657.sites80.storefront-hos...l.aspx?ID=3289
Andy1
http://s41657.sites80.storefront-hos...l.aspx?ID=3289
Andy1
#26
Originally Posted by Andy1
... BTW, these guys have a nice steam vent adapter fror 1/8 NPT which allows for running any kind of line; AN, hose, etc. They're cheap as well.
http://s41657.sites80.storefront-hos...l.aspx?ID=3289
Andy1
http://s41657.sites80.storefront-hos...l.aspx?ID=3289
Andy1
It bolts to the head? Where?
#27
Originally Posted by Project GatTagO
Perfect! Thanks John!
Andrew
Andrew
#28
That is true. I have had excellent support from John, and he does good work on his products.
with regard to where that steam vent adapter plugs in, I called the company and talked to them. You take out the existing hard lines, put one in each head in place of that, and T them together, and put a fitting in the top of the water pump, as discussed many other times no this forum.
with regard to where that steam vent adapter plugs in, I called the company and talked to them. You take out the existing hard lines, put one in each head in place of that, and T them together, and put a fitting in the top of the water pump, as discussed many other times no this forum.
#29
ewingr,
Yeah, it's basically an aluminum version of the steam vent that replaces the existing one on one side. It has a 1/8NPT threaded hole pointing up, and instead of a metal/rubber seal it uses an O-ring against the head.
Andy1
Yeah, it's basically an aluminum version of the steam vent that replaces the existing one on one side. It has a 1/8NPT threaded hole pointing up, and instead of a metal/rubber seal it uses an O-ring against the head.
Andy1
#30
Originally Posted by Andy1
ewingr,
...that replaces the existing one on one side...
Andy1
...that replaces the existing one on one side...
Andy1
I'm also cusious about one other thing: the existing one somehow passes steam through the TB, doesn't it? I don't recollect that hooking to the TB. Is that via rubber tubing or something?
#31
TECH Fanatic
iTrader: (13)
Yes the original configuration runs through the throttle body. Intent is to heat the intake air in cold climates I think. For most of us that is not an issue so it can be by passed. I even removed the tubes from the throttle body. Pull them out or cut them off. According to the EBay ads, this by pass will give you 5-7 horsepower! How can you pass that up?
Pat
Pat
#32
Originally Posted by ewingr
Hmmm...the company that sells it told me I need to put it on both sides, and T them together to the port that is put in the water pump.
I'm also cusious about one other thing: the existing one somehow passes steam through the TB, doesn't it? I don't recollect that hooking to the TB. Is that via rubber tubing or something?
I'm also cusious about one other thing: the existing one somehow passes steam through the TB, doesn't it? I don't recollect that hooking to the TB. Is that via rubber tubing or something?
The Wegner steam vent blocks come in pairs. One pair will accomodate the ends of a pair of cylinder heads. The pair of blocks would need to be Tee'd toghether , then a single line run to either the top of the radiator, or to the water pump outlet. If you choose to add steam vents to both the front and the rear of the heads, you will need two pairs of steam vent blocks (most argue that four are not necessary). The four blocks would have to be Tee'd toghether as well.
Hope this helps,
Andy1
#33
yes. Andy, that is helpful. I appreciate it.
I have one pair on order.
Now, I wonder if putting them in will make my engine run hotter. I have another thread on that. When driving over 50mph, and temp beleow 50, my temp gauge just barely hovers above the C, and the air from teh heater is luke warm at best. Mark at S&P thinks it is because I have the steam vent blocked.
I have one pair on order.
Now, I wonder if putting them in will make my engine run hotter. I have another thread on that. When driving over 50mph, and temp beleow 50, my temp gauge just barely hovers above the C, and the air from teh heater is luke warm at best. Mark at S&P thinks it is because I have the steam vent blocked.
#34
Launching!
iTrader: (7)
I suppose it depends a lot on your particular needs, space, and cosmetics (if that applies). If you're running a filler tank, you could plumb them there. Otherwise, the top of the radiator like a Camaro, etc., is it. BTW, these guys have a nice steam vent adapter fror 1/8 NPT which allows for running any kind of line; AN, hose, etc. They're cheap as well.
http://s41657.sites80.storefront-hos...l.aspx?ID=3289
Andy1
http://s41657.sites80.storefront-hos...l.aspx?ID=3289
Andy1
Thanks.
#35
Just use this fitting from Mike at JTR:
http://www.jagsthatrun.com/Pages/Par...g_LSI-tee.html
Works great.
http://www.jagsthatrun.com/Pages/Par...g_LSI-tee.html
Works great.
#36
TECH Enthusiast
iTrader: (4)
Just use this fitting from Mike at JTR:
http://www.jagsthatrun.com/Pages/Par...g_LSI-tee.html
Works great.
http://www.jagsthatrun.com/Pages/Par...g_LSI-tee.html
Works great.
#38
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I also made one like that out of exhaust tubing. I used mine to mount the heat gauge sending unit (3/8" NPT) I need to make another one for a friend, and will put in an extra bung for the steam vent. Both Summit and Jegs have these already made up, or at least they did at one time.
#39
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I bought one of these
http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT
Add a 1/8 npt threaded barbed hose fitting and your set....I'm going to paint the whole thing black to blend in with my radiator hose when I set it all up.
http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT
Add a 1/8 npt threaded barbed hose fitting and your set....I'm going to paint the whole thing black to blend in with my radiator hose when I set it all up.
#40
I bought one of these
http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT
Add a 1/8 npt threaded barbed hose fitting and your set....I'm going to paint the whole thing black to blend in with my radiator hose when I set it all up.
http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT
Add a 1/8 npt threaded barbed hose fitting and your set....I'm going to paint the whole thing black to blend in with my radiator hose when I set it all up.
For example:
The part on ebay is very thin wall where the 1/8npt fitting threads into it.
The ebay part doesn't include the steam tube fitting.
The ebay part isn't machined to install a petcock valve for bleeding the air out, nor does it include a petcock valve.
The ebay part may be too long to fit into tight engine compartments. We made our part as short as possible to fit into tight situations.
Also, we make transitional steam vent tubes, so if you need a size that goes from 1-5/16 to 1-9/16, we have these.
Also, we make these parts inhouse, so if you need a size not listed on our webpage, we can usually make the part within a week.