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03-11-2005, 06:45 AM
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CC Member
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Join Date: Apr 2001
Location: S.Elgin,
IL
Cobra Make, Engine: 396 long block, PROBE Forged Dished pistons 8.75 to 1 and Vic Jr. heads from Engine Factory. Tremec TKO. BDR#244 Sterling Gray/Silver stripes. 17in polished wheels, glove box and tonneau cover.
Posts: 1,846
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Not Ranked
Dumb intake question time
What is that hole for on the top left?
sid 
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T.S.B. of The West Side Cobra Club
N.D.N.P.N.P. 
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03-11-2005, 07:10 AM
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Stolen Avitar
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Join Date: Oct 2004
Location: Brunswick,
GA
Cobra Make, Engine: BDR 1311 428PI
Posts: 3,044
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Not Ranked
Water transfer for a heater. If you aren't running a heater just plug it.
Steve
P.S. Same for the one on the other side.
Last edited by lovehamr; 03-11-2005 at 07:13 AM..
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03-11-2005, 07:20 AM
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Member of the north
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Join Date: May 2003
Cobra Make, Engine: A Cobra
Posts: 11,207
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Not Ranked
Temp sending unit for Emmissions. Or, thermal switch for vacuum line routing. Or, cold air lever activation switch for cold startup. Or, heater hose connection. Or, HVAC temp switch for blend.
Got any of these??? Hey, it's a spot you can detect, bleed or measure the coolent before the T'Stat. If you do not want to use it, plug it.
hope this helps.
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I'm a writer, feed the artist and buy a book.
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03-11-2005, 11:57 AM
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CC Member
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Join Date: Jan 2002
Location: Bridgewater,
NJ
Cobra Make, Engine: B & B
Posts: 1,323
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Not Ranked
Plug it!
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Just enough knowledge to build a cobra and be dangerous...
You can observe a lot from just watching.
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03-12-2005, 06:32 AM
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CC Member
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Join Date: Apr 2003
Location: Sparrowbush,
NY
Cobra Make, Engine: A&C 351W, C4
Posts: 407
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Not Ranked
Options
If you're not running a heater, you can just plug it. What I did was I used it for a burp valve. I used a small brass pipe with an elbow and a drain cock fitting. When I fill the system with coolant, I fill it until coolant comes out of the drain valve thus removing all the air from the system.
Attached is a picture of the setup.
Burp Valve |
03-12-2005, 08:01 AM
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CC Member
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Join Date: Apr 2001
Location: S.Elgin,
IL
Cobra Make, Engine: 396 long block, PROBE Forged Dished pistons 8.75 to 1 and Vic Jr. heads from Engine Factory. Tremec TKO. BDR#244 Sterling Gray/Silver stripes. 17in polished wheels, glove box and tonneau cover.
Posts: 1,846
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Not Ranked
Yeah I was trying to figure out how to plug it. Do I just go to Home Depot to get the parts? And I also will need to plug the heater hole on the water pump.
I'm also seeing a lot of guys that have a nice pipe/fuel line from the Carter mech. fuel pump to the Demon Carb fuel line with fittings I have not seen. They don't seem like AN fittings though. Any input on that?
Sid
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T.S.B. of The West Side Cobra Club
N.D.N.P.N.P.
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03-12-2005, 09:40 AM
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CC Member
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Join Date: Apr 2003
Location: Sparrowbush,
NY
Cobra Make, Engine: A&C 351W, C4
Posts: 407
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Not Ranked
Burp Valve
You hit it right on the head - I got the piping parts from Home Depot.
As for the fuel lines fittings, in the pic I posted I had a single pumper on the engine with just a braided line from the pump to the carb, with the inlet on the driver's side. I have since changed over to a double pumper with the inlets on the passenger side. I don't have any pics to post but I will take a few when I get a chance and post them.
I run a braided line from the pump up to a filter that is in front of the carb. Then it runs to an AN "T" fitting for the front carb inlet and to an AN elbow fitting for the rear inlet.
Most of the racing warehouses, Summit or Jegs, carry preformed braided line setups with fittings or you can buy the parts and make your own. Some guys use fuel logs or even chrome plated tubing that is preformed to feed into double pumpers.
I gues it's a matter of preference, but I like the look of the braided stainless and the blue and red anodized AN fittings. Additionally, I believe that the braided stainless is stronger.
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03-13-2005, 07:03 AM
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CC Member
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Join Date: Feb 2000
Location: Long Island New York,
NY
Cobra Make, Engine: SPF 974
Posts: 737
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Not Ranked
I used that opening for my temp sensor and plugged the other.
BTW...the pluged opening is a great place to fill the block with coolant to save burping time.
The best plugs are anodized red/blue/polished or stainless from any race shop. the have a hex head and will screw flush to the intake for the look. The threads are typical plumbing threads however. The water pump can be plugged using rubber caps available at any auto parts in the "help" section but the best thing to do is thread that spout and install another anodized fitting with paste sealant. If pump is off it's a 10 minute job. The thread tapping can be done with the pump on if it is packed properly below.
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03-13-2005, 07:14 AM
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CC Member
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Join Date: Oct 2003
Location: Winter Park,
Fl
Cobra Make, Engine: Hunter with a 4.6 supercharged
Posts: 690
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Not Ranked
Makes great spot for a temp sensor for your electric fan. Just like on new cars you can install a relay and hook one wire to the temp sensor. When it hits its preset temp, say 212 the cooling fan kicks on by it's self.
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Bruce Edwards
Gemini Motorcars Inc.
http://home.bellsouth.net/p/PWP-GeminiMotorcars
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03-13-2005, 10:09 AM
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6th Generation Texan
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Join Date: Feb 2002
Location: Devil's Backbone,RR 32,
TX
Cobra Make, Engine: Lone Star Classics #240,Candy Apple Red,Keith Craft 418w - 602 HP,584 TQ
Posts: 8,157
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Not Ranked
I've got another dumb question.
What size NPT is the opening in the manifold for the tempt sensor ? The smaller of the two.
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03-13-2005, 11:00 AM
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CC Member
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Join Date: May 2003
Posts: 1,313
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Not Ranked
Fred, in my experience, if it comes in 3 sizes, might as well buy all 3, will eventually anyway...
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03-13-2005, 11:01 AM
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CC Member
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Join Date: Oct 2003
Location: Winter Park,
Fl
Cobra Make, Engine: Hunter with a 4.6 supercharged
Posts: 690
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Fred,
To be honest I do not remeber right this moment. Would not be hard to find out. What intake are you running?
__________________
Bruce Edwards
Gemini Motorcars Inc.
http://home.bellsouth.net/p/PWP-GeminiMotorcars
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03-13-2005, 04:01 PM
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6th Generation Texan
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Join Date: Feb 2002
Location: Devil's Backbone,RR 32,
TX
Cobra Make, Engine: Lone Star Classics #240,Candy Apple Red,Keith Craft 418w - 602 HP,584 TQ
Posts: 8,157
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Not Ranked
I know the one for my heater (pass. side,larger) is 1/2" npt.I still have the package the heater hose nipple came in.
The one on the driver's side is smaller. 3/8" npt ??? 
Oh,I have a Victor Jr. on a 418w. |
03-13-2005, 04:11 PM
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CC Member
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Join Date: Oct 2003
Location: Winter Park,
Fl
Cobra Make, Engine: Hunter with a 4.6 supercharged
Posts: 690
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Not Ranked
Fred,
It's 1/4 pipe isn't it? Goes 1/8, 1/4, 1/2, 3/4 if my poor old brain is still working. Hell I do not remember. I will go in tomorrow and check the intake on the 351w in the shop. Sorry end of the day brain freeze. I'll post my findings in the morning.
__________________
Bruce Edwards
Gemini Motorcars Inc.
http://home.bellsouth.net/p/PWP-GeminiMotorcars
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03-13-2005, 04:24 PM
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6th Generation Texan
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Join Date: Feb 2002
Location: Devil's Backbone,RR 32,
TX
Cobra Make, Engine: Lone Star Classics #240,Candy Apple Red,Keith Craft 418w - 602 HP,584 TQ
Posts: 8,157
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Not Ranked
Bruce,
Thanks for taking the time tomorrow to figure out my dumb question.
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03-13-2005, 04:25 PM
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CC Member
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Join Date: Oct 2003
Location: Winter Park,
Fl
Cobra Make, Engine: Hunter with a 4.6 supercharged
Posts: 690
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Not Ranked
No problem. Glad to help.
__________________
Bruce Edwards
Gemini Motorcars Inc.
http://home.bellsouth.net/p/PWP-GeminiMotorcars
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03-14-2005, 03:28 PM
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CC Member
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Join Date: Oct 2003
Location: Winter Park,
Fl
Cobra Make, Engine: Hunter with a 4.6 supercharged
Posts: 690
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Not Ranked
Sorry I lost this link. It is 3/8 pipe on the small hole and 1/2 pipe for the heater outlet.
__________________
Bruce Edwards
Gemini Motorcars Inc.
http://home.bellsouth.net/p/PWP-GeminiMotorcars
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03-14-2005, 04:31 PM
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6th Generation Texan
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Join Date: Feb 2002
Location: Devil's Backbone,RR 32,
TX
Cobra Make, Engine: Lone Star Classics #240,Candy Apple Red,Keith Craft 418w - 602 HP,584 TQ
Posts: 8,157
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Not Ranked
Thanks Bruce !
I have a VDO sender that I thought was going bad.
Went to their website and there is every size you could imagine.
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03-14-2005, 05:29 PM
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CC Member
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Join Date: Oct 2003
Location: Winter Park,
Fl
Cobra Make, Engine: Hunter with a 4.6 supercharged
Posts: 690
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Not Ranked
No problem sorry I was so slow to get it for you.
__________________
Bruce Edwards
Gemini Motorcars Inc.
http://home.bellsouth.net/p/PWP-GeminiMotorcars
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03-15-2005, 04:47 AM
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CC Member
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Join Date: Mar 2000
Location: Fairfield, NJ, USA,
NJ
Cobra Make, Engine: A & C, 351W, Tremec 3550. Exiled Member: Club Cranky
Posts: 5,897
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Not Ranked
Instead of a plug I installed a petcock so I can bleed the cooling system.
Roscoe
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Roscoe
"Crisis occurs when women and cattle get excited!"....James Thurber
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