Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546482
12/11/13 05:44 PM
12/11/13 05:44 PM
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I don't have one here in front of me to measure, but I thought the nipple was 1/2" NPT and that would need a 23/32 drill bit
machine shop owner and engine builder
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546484
12/11/13 10:09 PM
12/11/13 10:09 PM
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Quote:
Does anybody know what size hole needs to be drilled into an intake to use a water pump bypass hose? Also, what size threads to tap for the nipple that would go into it? I picked up an Indy 360-3 intake and this area is currently closed off, and I would like to run the bypass hose since this is a street car.
I am using the Indy intake also without the bypass hose. I drive mine on the street and it never gets over 170* if that is what you are worried about. I have a thermostat in it with the center knocked out, so the water will circulate when I am cooling between rounds. I am running a Proform electric water pump and a electric fan pushing from the outside of the radiator.
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546485
12/11/13 10:31 PM
12/11/13 10:31 PM
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Quote:
Does anybody know what size hole needs to be drilled into an intake to use a water pump bypass hose? Also, what size threads to tap for the nipple that would go into it? I picked up an Indy 360-3 intake and this area is currently closed off, and I would like to run the bypass hose since this is a street car.
I had my 360-3 intake drilled for the bypass hose and it required a 3/4 npt tap according to Ryan Johnson. See our conversation about it:
Quote:
Ryan, did you remember to modify it to accommodate the bypass hose?
Height wise, yeah it better damn well be about same as your M1 LOL But no spacer required on this...
Forgot about the bypass hose, you're the only person I know who still runs one... looks like I'll be breaking out the 3/4" NPT tap tomorrow. LOL [end quote]
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: 72demon416]
#1546486
12/11/13 10:41 PM
12/11/13 10:41 PM
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Its a 3/4 NPT nipple, I just bought one last night.
School of Automotive Machinists Racing
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: 80arrow]
#1546490
12/12/13 12:10 AM
12/12/13 12:10 AM
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Quote:
I am using the Indy intake also without the bypass hose. I drive mine on the street and it never gets over 170* if that is what you are worried about. I have a thermostat in it with the center knocked out, so the water will circulate when I am cooling between rounds. I am running a Proform electric water pump and a electric fan pushing from the outside of the radiator.
Was your intake machined for a thermostat or is your goose neck machined for a thermostat? Sorry to hi-jack your thread.
Sorry, I do not remember which one was machined for the thermostat. I got the t-housing from Mancini I think.
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546491
12/12/13 12:39 AM
12/12/13 12:39 AM
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Quote:
Guys, isn't the reason behind the bypass hose to keep water from the block circulating when using a thermostat to avoid building up pressure?
I would like to still run a thermostat as this is a street car, and from what I have read using a stat far outweighs using a retrictor plate or nothing at all in a street car.
I am also running an edelbrock high flow mechanical water pump.
Unless I am missing something, is there some sort of benefit to not running the bypass hose when using a thermostat?
The reason is to keep the heat in the engine to warm up quicker for the heater and now days for emissions
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: MR_P_BODY]
#1546492
12/12/13 12:45 AM
12/12/13 12:45 AM
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Quote:
Quote:
Guys, isn't the reason behind the bypass hose to keep water from the block circulating when using a thermostat to avoid building up pressure?
I would like to still run a thermostat as this is a street car, and from what I have read using a stat far outweighs using a retrictor plate or nothing at all in a street car.
I am also running an edelbrock high flow mechanical water pump.
Unless I am missing something, is there some sort of benefit to not running the bypass hose when using a thermostat?
The reason is to keep the heat in the engine to warm up quicker for the heater and now days for emissions
So if I eliminate the thermostat all together (see some mention running a gutted t-stat) how much longer would it take the car to warm up on average?
Also, if the bypass gets blocked and I leave the t-stat installed but drill some holes in it, will that help the coolant to flow while the stat is still closed? or will holes not flow enough to do that?
I don't want hot spots in the engine, nor do I want to cavitate the pump
Do electric pumps require you to not run a t-stat for these reasons?
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546493
12/12/13 01:01 AM
12/12/13 01:01 AM
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Thermostat ..... HA haven't ran one in probably 8 years. Stock pump or electric.
I agree, leave it blocked off, drill some holes in the Thermostat if you wish to circulate water.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546494
12/12/13 01:08 AM
12/12/13 01:08 AM
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So if I eliminate the thermostat all together (see some mention running a gutted t-stat) how much longer would it take the car to warm up on average? Also, if the bypass gets blocked and I leave the t-stat installed but drill some holes in it, will that help the coolant to flow while the stat is still closed? or will holes not flow enough to do that? I don't want hot spots in the engine, nor do I want to cavitate the pump Do electric pumps require you to not run a t-stat for these reasons?
I run a stat with 6 1/8" holes in it... elec pumps dont like to be dead heated... I dont run the by pass on my Rampage but I also plan on a heater
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: Triple Threat]
#1546495
12/12/13 01:14 AM
12/12/13 01:14 AM
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Quote:
Thermostat ..... HA haven't ran one in probably 8 years. Stock pump or electric.
I agree, leave it blocked off, drill some holes in the Thermostat if you wish to circulate water.
Did you notice that it takes the car longer to warm up without one? Do you run a restrictor in its place, or nothing at all?
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: MR_P_BODY]
#1546496
12/12/13 01:15 AM
12/12/13 01:15 AM
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Quote:
So if I eliminate the thermostat all together (see some mention running a gutted t-stat) how much longer would it take the car to warm up on average?
Also, if the bypass gets blocked and I leave the t-stat installed but drill some holes in it, will that help the coolant to flow while the stat is still closed? or will holes not flow enough to do that?
I don't want hot spots in the engine, nor do I want to cavitate the pump
Do electric pumps require you to not run a t-stat for these reasons?
I run a stat with 6 1/8" holes in it... elec pumps dont like to be dead heated... I dont run the by pass on my Rampage but I also plan on a heater
What if I am ditching the heater setup totally? Will the stat with the holes drilled in it suffice, or will the pump still be dead headed technically?
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: Triple Threat]
#1546499
12/12/13 08:06 PM
12/12/13 08:06 PM
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Quote:
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Thermostat ..... HA haven't ran one in probably 8 years. Stock pump or electric.
I agree, leave it blocked off, drill some holes in the Thermostat if you wish to circulate water.
Did you notice that it takes the car longer to warm up without one? Do you run a restrictor in its place, or nothing at all?
Yes it takes longer, this is only an issue if you live as close to the north pole as you do.
I ran nothing.
LOL I'm not much further north then you...your in washington, arent you?
Maybe it's worth trying without anything in there at all?
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: MR_P_BODY]
#1546500
12/12/13 08:07 PM
12/12/13 08:07 PM
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What if I am ditching the heater setup totally? Will the stat with the holes drilled in it suffice, or will the pump still be dead headed technically?
the holes are good enough to move some fluid but still warm the engine fairly quick and not hurt the pump
Have you tried the drilled stat without any heater core? I just worry about creating hot spots in the motor...How much can those holes really flow is what I wonder
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: SpareParts]
#1546502
12/12/13 09:31 PM
12/12/13 09:31 PM
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Quote:
FWIW I ran a gutted T-stat with a bypass hose and no heater, I tried it once with no T-stat or restrictor and the water was moving too fast to actually cool the motor and it wanted to overheat. Stock 1/2 ton 80's ram radiator.
What do you run now?
Are you still running a bypass hose currently?
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546503
12/12/13 09:40 PM
12/12/13 09:40 PM
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Quote:
Quote:
FWIW I ran a gutted T-stat with a bypass hose and no heater, I tried it once with no T-stat or restrictor and the water was moving too fast to actually cool the motor and it wanted to overheat. Stock 1/2 ton 80's ram radiator.
What do you run now?
Are you still running a bypass hose currently?
Gutted T-stat and a bypass hose. Works fine. Hardest part is keeping V belts on when the nitrous hits lol
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: MattW]
#1546505
12/12/13 09:45 PM
12/12/13 09:45 PM
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There is an excellent cooling write up over on moparchats. He goes by 40ford over here. I would be more interested in pulling the water out of the rear of the intake and plumbing below your drilled out thermostat. Matt
That^^^^^ is something I have wanted to experiment with
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: sshemi]
#1546508
12/13/13 10:50 PM
12/13/13 10:50 PM
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If youre useing the heater box i see no reason to use the bypass. The heater box does the same thing. Im useing an electric water pump with stat and heater box no bypass.
Not running a heater box, which is why I asked this question in the first place
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546510
12/14/13 03:12 PM
12/14/13 03:12 PM
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I run a 1/2" bypass hose with a t-stat and a electric pump to keep water moving when the stat is closed. You want the water to circulate by the t-stat so it will see the real water temp.
I drilled and tapped the manifold in the stock location and ran the hose to the unused port on the suction side of my Meziere pump with a reducing bushing and a hose fitting. Works well for me.
"Just a Bracket car dressed up like a streetcar"
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: Just-a-dart]
#1546511
12/14/13 07:57 PM
12/14/13 07:57 PM
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Quote:
I run a 1/2" bypass hose with a t-stat and a electric pump to keep water moving when the stat is closed. You want the water to circulate by the t-stat so it will see the real water temp.
I drilled and tapped the manifold in the stock location and ran the hose to the unused port on the suction side of my Meziere pump with a reducing bushing and a hose fitting. Works well for me.
Have a pic of this setup?
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546512
12/15/13 12:31 AM
12/15/13 12:31 AM
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I pulled this out of my car years ago and began running the car with nothing at all. I drilled the holes in it out of boredom one day. Its still sitting in the top of my tool box.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: mshred]
#1546514
12/15/13 12:41 PM
12/15/13 12:41 PM
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That basically what I run... those holes look bigger than what I run(I run 6 holes 1/8") just so the water flows and not dead heading the pump
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Re: Drilling and tapping Indy SB intake for bypass hose
[Re: Just-a-dart]
#1546517
12/16/13 02:12 AM
12/16/13 02:12 AM
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Quote:
Quote:
Quote:
I run a 1/2" bypass hose with a t-stat and a electric pump to keep water moving when the stat is closed. You want the water to circulate by the t-stat so it will see the real water temp.
I drilled and tapped the manifold in the stock location and ran the hose to the unused port on the suction side of my Meziere pump with a reducing bushing and a hose fitting. Works well for me.
Have a pic of this setup?
Here is my set up
Thanks!
Makes me feel like I should run a bypass hose, especially if I am not running a heater...I really dont want to chance hot spots in the motor
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