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Engine Bay Hose Sizes!

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Old 07-15-2009, 01:41 PM
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Engine Bay Hose Sizes!

Ok so i know that some people, including myself, would like to change up some of the hoses in the engine bay to some braided hose. So i thought i'd make a diagram to show the different hose sizes so that people can know what to buy. Hopefully rookie, randy, kurtis, or anyone else who knows can chime in and give some of the sizes as i'm not familiar with them.

i used 98intrigues bay, if you want me to use another just lmk.

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Red(coolant) -
Blue(vacuum) -
Green(vacuum) -
Purple(vacuum) -
Yellow(coolant) -

Thanks.

And i know you can't run braided hose on the coolant hose to the radiator but you can sleeve it.
Old 07-15-2009, 04:02 PM
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i think socalted posted the sizes in a thread a few years back...give me a few minutes to track it down

FWIW, the green & purple lines have tight bends so its hard to use most braided lines on them. You may be better off sleeving those. Also, if you're gonna do the work to swap out to braided lines, you should just relocate the blue line so its no longer visible. The yellow line can be replaced with a -11, but I've heard from a reputable source that you can use a smaller -10 or -8AN lines there too.

Last edited by bigc; 08-10-2009 at 06:09 PM.
Old 07-15-2009, 07:34 PM
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socalted's post with hose recommendations & sizes is below. the type and manufacturer of the hose will dictate which hose you get. once you decide on the type of hose you want, for example, pro-lite 350 or perform-o-flex, you can measure your line and see which size corresponds to it.

Quote:
Originally Posted by SoCalTed View Post
if not going for shiney, I'd suggest Earl's pro-lite 350 for light weight and zero abrasiveness, plus you won't need as many 45 or 90 degree connectors.

Kinda hard to get points for at shows if you are not there to point them out. Pretty stealthy.

One thing though is that you aren't supposed to use it with brake fluids. The other teflon lined hoses can be used. ALTHOUGH... I had my hoses installed by Earl's team (not holley) and they did use a couple on my master cylinder. 30k later and no issues.

So here's the break downs on braided hose:

EZ Flex Hose:
* 304 Stainless steel braiding
* SAE-30R7 rubber smooth bore inner core for oil, fuel & emission lines
* Lightweight and extremely flexible
* Used for low to medium duty (100 PSI MAX) applications
* Operating temperature range to 250║F
* Easy to assemble
* Avail in sizes ID .3125" & ID .375" (Stainless Steel)

Diamond Lite Hose:
* PET Monofilament braided for maximum hose protection
* SAE-30R7 rubber smooth bore inner core for oil, fuel & emission lines
* Lightweight and extremely flexible
* Used for low to medium duty (100 PSI MAX) applications
* Operating temperature range to 250║F
* Easy to assemble
* Avail in ID: .25", .3125" & .375"
* Avail in Red, Blue or Yellow Braid on Black hose

Earl's Auto–Flex Hose
* Stainless Braid
* Protects Synthetic Rubber Hose
* See Catalog Page Above For Operating Pressures
* Remains Flexible at Temperatures Between -40░F and +300░F
* Competitive Price
* Meets USA Specifications
* Textile Braid In Hose Liner
* Clean and Fast Flowing
* Avail in:
Size 3, ID .15625, OD .375
Size 4, ID .21875, OD .4375
Size 5, ID .25, OD .5
Size 6, ID .34375, OD .546875
Size 7, ID .375, OD .625
Size 8, ID .4375, OD .640625
Size 9, ID .5, OD .71875
Size 10, ID .5625, OD .796875
Size 11, ID .625, OD .875
Size 12, ID .6875, OD .9375
Size 14, ID .75, OD 1.03125
Size 16, ID .875, OD 1.15625
Size 18, ID 1, OD 1.3125
Size 28, ID 1.5, OD 1.84375
Size 32, ID 1.75, OD 2.125

Earl's Prolite 350:
* Highest Pressure Lightweight Rubber Lined Hose Available
* Half the Weight of Traditional Stainless Braid Hose
* Maximum pressure rating of 350 psi
* 1400 PSI Burst Pressure
* -40░ F to +300░ F Operating Temperature Range
* Holds 27 hg Vacuum
* Constructed In USA
* Abrasion Resistant Nylon Sheath
* Easy to Cut and Work With
* Synthetic Rubber Liner
* Incredible Flexibility
* Withstands Hot Oil Temperatures
* Avail in:
Size 4, ID .22, OD .44
Size 6, ID .35, OD .55
Size 8, ID .44, OD .65
Size 10, ID .57, OD .80
Size 12, ID .69, OD .94
Size 16, ID .88, OD 1.16 (optional inner support spring avail)
Size 20, ID 1.12, OD 1.70 (optional inner support spring avail)

Perform-O-Flex:
* Stainless Steel Inner Braid
* High-Temp. Synthetic Rubber
* Maximum Pressure Rating of 250-1500 PSI
* Remains Flexible at Temperatures Between -40░F and +300░F
* Mechanical Bond Between Layers
* Clean and Fast Flowing
* Provides Constant Flow
* Full Coverage Outer Braid
* Avail in sizes:
Size 4, ID .21875, OD .4375
Size 6, ID .34375, OD .546875
Size 8, ID .4375, OD .640625
Size 10, ID .5625, OD .796875
Size 12, ID .6875, OD .9375
Size 16, ID .875, OD 1.15625
Size 20, ID 1.125, OD 1.4375
Size 24, ID 1.375, OD 1.703125
Size 28, ID .4375, OD .640625
Size 32, ID 1.75, OD 2.125

Ultra Flex 650 - SS braided
* Covered in aircraft quality 304 grade stainless steel wire
* High-Temp. Smooth bore Teflon« tubing
* Maximum Pressure Rating of 740-1180 PSI
* Convoluted outer wall of inner tube for incredible flexibility
* Remains Flexible at Temperatures Between -94░F and +510░F
* Bend radius of 1.772"
* Clean and Fast Flowing
* Avail in:
Size 6, ID .394, OD .512
Size 8, ID .536, OD .650
Size 10, ID .658, OD .819
Size 12, ID .780, OD .961
Size 16, ID 1.0039, OD 1.272

ULTRA Flex 650 (KEVLAR):
* Ultra-light Kevlar« Outer Braid
* High-Temp. Smooth bore Teflon« tubing
* Maximum Pressure Rating of 740-1320 PSI
* Convoluted outer wall of inner tube for incredible flexibility
* Remains Flexible at Temperatures Between -94░F and +500░F
* Bend radius of 1.772"
* Clean and Fast Flowing
* Avail in sizes:
Size 4, ID .220, OD .378
Size 6, ID .394, OD .512
Size 8, ID .536, OD .650
Size 10, ID .658, OD .819
Size 12, ID .780, OD .961
Size 16, ID 1.0039, OD 1.272

Note: Max PSI ratings differ depending on diameter of hose.
Old 07-15-2009, 07:42 PM
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aight cool, thanks Chris, i'll look over this stuff!
Old 07-17-2009, 03:28 PM
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Quote:
Originally Posted by ShanesG View Post
Ok so i know that some people, including myself, would like to change up some of the hoses in the engine bay to some braided hose. So i thought i'd make a diagram to show the different hose sizes so that people can know what to buy. Hopefully rookie, randy, kurtis, or anyone else who knows can chime in and give some of the sizes as i'm not familiar with them.

i used 98intrigues bay, if you want me to use another just lmk.



Red(coolant) -
Blue(vacuum) -
Green(vacuum) -
Purple(vacuum) -
Yellow(coolant) -

Thanks.

And i know you can't run braided hose on the coolant hose to the radiator but you can sleeve it.
Our coolant hose is 1 1/4 inch i believe. blue vacuum is 3/8. yellow is 5/8. green i've replaced with a 3/8. purple no clue yet haven t replaced. heres a few shots. also the green line you can use 8an-
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Old 08-10-2009, 05:19 PM
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wow great thread shane... looks like a lot for me to read over when I get a chance.

just to clarify; was everything answered in here or did the thread sort of die?

k cool, subscribing.
Old 08-10-2009, 05:21 PM
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^great thread Shane! Lots of people will put this to good use.
Old 08-10-2009, 05:25 PM
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NP guys i know people will be asking as more people are getting into dressing up their bay...
Old 08-10-2009, 06:08 PM
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Quote:
Originally Posted by ShanesG View Post
Yellow coolant bypass line is -11 if you want to stick with the stock size.
Red upper radiator hose is -24
Old 08-10-2009, 06:35 PM
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also for those that don't understand -an sizes. its 1/16th of an inch for each number. so 8-an would be 1/2 inch(8/16ths). or 20-an would be 1 1/14 inch. etc.
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Old 11-09-2009, 06:31 AM
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Great thread Shane! BigC informed about this thread. Thanks Chris.

Lots of useful info in here.
Old 01-10-2011, 04:26 AM
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I know this thread is mad old, but I've been looking to replace my hoses with earl's hoses and fittings. Even after reading this thread and reading many others, I just can't seem to figure out the sizing translation of "1 1/4 inches" to the sizing of earl's hoses numbers of "2, 4, 10, etc ..."

Any help would be appreciated, I don't know if i'm just not understanding the information or what. Call me a noob if you want, desperate here
Old 01-10-2011, 04:52 AM
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^^ I believe a -20 hose = 1 1/4
Old 09-12-2011, 03:00 AM
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Quote:
Originally Posted by bigc View Post
socalted's post with hose recommendations & sizes is below. the type and manufacturer of the hose will dictate which hose you get. once you decide on the type of hose you want, for example, pro-lite 350 or perform-o-flex, you can measure your line and see which size corresponds to it.
gonna borrow this..K?
Old 09-12-2011, 04:32 AM
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No problem from me. You should PM socalted though since its his text.

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