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Old Nov 30, 2021 | 04:14 PM
  #391  
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kaj
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From: Fresno, CA
Originally Posted by ViciousLSD
Thanks. I'm looking to relocate the ACD, I think it would be better if I move the oil cooler to the front of the radiator. I think I can reuse the stock unit but sometimes I prefer to work on a 2nd unit to avoid "downtime" and also be able to "roll back" (sorry for the IT term) if needed. maybe an upgrade to OE unit would be good also. I did just learn about the low temp thermostats last night ... I'm not sure if this would be a good thing to install. I did read about other's oil temp concerns so I was trying to tackle it before I even encounter it
I've worked with AN fittings before. its a bit of a hassle sometimes, and can be an eyesore. I'll research for more compact 90degree AN fittings if I go for an aftermarket oil cooler. I was planning to use a banjo with a barb hose end when I posed the question
I used to see 260*+ with the OEM cooler in summer weather so had to start backing off and taking cool down laps. I went to a 6.5ish QT pan and a Setrab cooler. Now I top out around 230-240 or so. This is in 90-100* weather. If the cooler doesn't matter then it looks like you need a larger oil capacity. I assume both are contributing, so would definitely recommend a cooler upgrade.
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Old Nov 30, 2021 | 04:31 PM
  #392  
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From: Houston
Originally Posted by kaj
I used to see 260*+ with the OEM cooler in summer weather so had to start backing off and taking cool down laps. I went to a 6.5ish QT pan and a Setrab cooler. Now I top out around 230-240 or so. This is in 90-100* weather. If the cooler doesn't matter then it looks like you need a larger oil capacity. I assume both are contributing, so would definitely recommend a cooler upgrade.
I was looking for the upgraded oil pan before I did the crank scrapers but cant find one. Maybe I'll get one later
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Old Nov 30, 2021 | 04:32 PM
  #393  
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From: Las Vegas
Originally Posted by ViciousLSD
Its mostly about the space they occupy making a turn.
You can get low profile fittings. Or use banjo's on the OFH and straight hose ends.
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Old Nov 30, 2021 | 04:36 PM
  #394  
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From: Houston
Originally Posted by letsgetthisdone
use banjo's on the OFH and straight hose ends.
is that the banjo with barb? thats what i was thinking to use initially
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Old Nov 30, 2021 | 04:43 PM
  #395  
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On thing to think about before relocating the cooler is the ducting is a massive portion of the systems efficiency. A cooler hanging out in open air does some but air is lazy and will walk around it more than push through.

You really need to create a pressure differential between the front and rear to get function out of it. And moving it in front of the radiator makes for a tough situation where air hits the cooler and radiator and just stalls because the passage of air is much smaller than the opening. The radiator has the benefit of a lower pressure behind it but the cooler will just be all in high pressure. So either you duct in front AND behind the core or you add a fan.
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Old Nov 30, 2021 | 06:52 PM
  #396  
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In my experience many "normal" sized coolers don't need ducting to be sufficient though they work exceptionally better with ducting for sure. Ducting is much more needed for the stock location than the front center grille because it lives in a lower pressure zone than the front grille. The front grille will basically always have the highest pressure going into it so as long as that is sealed well enough you'll get plenty of flow through your all coolers in the front grille.

I haven't seen anyone mention surface area on coolers yet. The reason why the factory cooler is mediocre is because it's a low density 10 row. Most of the oil cooler upgrades on the market are a similar sized core but they're 25 rows. They have wayyy more surface area for heat transfer than the factory cooler does which is why they're so much more efficient.

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Old Nov 30, 2021 | 09:19 PM
  #397  
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From: Houston
A shroud would definitely help with efficiency. you want air kinda trapped so it uses the preferred exit, rather than going around the surface that needs cooling. this is why i'm experimenting on making a shroud for the rotor vents
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Old Nov 30, 2021 | 09:48 PM
  #398  
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From: Portland, Or
Originally Posted by ayoustin
In my experience many "normal" sized coolers don't need ducting to be sufficient though they work exceptionally better with ducting for sure. Ducting is much more needed for the stock location than the front center grille because it lives in a lower pressure zone than the front grille. The front grille will basically always have the highest pressure going into it so as long as that is sealed well enough you'll get plenty of flow through your all coolers in the front grille.

I haven't seen anyone mention surface area on coolers yet. The reason why the factory cooler is mediocre is because it's a low density 10 row. Most of the oil cooler upgrades on the market are a similar sized core but they're 25 rows. They have wayyy more surface area for heat transfer than the factory cooler does which is why they're so much more efficient.
You have pressure all around the core though, no pressure differential. Air does hit it, but its going to flow around the back of the core as well. Certainly the 2nd step if you need more cooling, shroud the front, then shroud the rear to the radiator.
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Old Dec 1, 2021 | 06:14 AM
  #399  
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I've got a B&M 70273 up front (to make room for brake duct inlets) and while I know it's no Setrab it does the job perfectly fine for my uses. The car does get warm during auto-x on 100+ degree days but unfortunately I don't get a temp readout on my stupid Innovate oil press/temp gauge just a color scale that's programmable. I just started hitting the cooler with some water while in the pits to help cool it down. If I ever start TTing I expect to have to make a duct for it but it would be very easy to form up and make it into an integral mount plus sealing it to the radiator wouldn't be a challenge, either. It's also on AN fittings that have lines snaked between radiator and the lower support with rubber/metal edge trim covering the sharp edge. If I ever upgrade it'll probably be to Austin's stacked unit for oil & PS.


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Old Dec 1, 2021 | 08:29 AM
  #400  
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From: Houston
Originally Posted by Dallas J
On thing to think about before relocating the cooler is the ducting is a massive portion of the systems efficiency. A cooler hanging out in open air does some but air is lazy and will walk around it more than push through.

You really need to create a pressure differential between the front and rear to get function out of it. And moving it in front of the radiator makes for a tough situation where air hits the cooler and radiator and just stalls because the passage of air is much smaller than the opening. The radiator has the benefit of a lower pressure behind it but the cooler will just be all in high pressure. So either you duct in front AND behind the core or you add a fan.
Is your decision to relocate more for tire clearance?
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Old Dec 1, 2021 | 08:54 AM
  #401  
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Originally Posted by ViciousLSD
Gents. So I've been looking into oil coolers. I don't like those with AN fittings ... Is it a bad idea to use properly sized barb, quality hose & basic clamps? Trans oil cooler & Engine oil cooler is pretty much the same, right?
What's so special about Setrab? What's so bad about cheaper brands like Derale? Is 30k BTU/hr good enough for track sprints (I don't plan to do full race session)? Can I pressure test (125psi) these oil coolers for 24hrs and conclude they're good if they dont blow up/leak? Thanks
I think most trans coolers have smaller fittings than engine oil coolers so they flow less..
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Old Dec 1, 2021 | 11:27 AM
  #402  
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From: Las Vegas
Originally Posted by ViciousLSD
is that the banjo with barb? thats what i was thinking to use initially
You can get banjo's that have an AN fitting. The use a straight hose end.

https://www.summitracing.com/parts/f...YaAuIMEALw_wcB
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Old Dec 1, 2021 | 12:01 PM
  #403  
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From: Houston
Originally Posted by letsgetthisdone
You can get banjo's that have an AN fitting. The use a straight hose end.

https://www.summitracing.com/parts/f...YaAuIMEALw_wcB
yeah I've seen these. just thought AN fittings are barb'd on the hose end as well so why add another
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Old Dec 1, 2021 | 12:20 PM
  #404  
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From: Las Vegas
Originally Posted by ViciousLSD
yeah I've seen these. just thought AN fittings are barb'd on the hose end as well so why add another
Those are pushlok fittings. Reuable "race" hose ends are not.
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Old Dec 1, 2021 | 12:36 PM
  #405  
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From: Houston
Originally Posted by letsgetthisdone
Those are pushlok fittings. Reuable "race" hose ends are not.
hmm not many google hits about hose leaks with AN fittings, but plenty on the flare/swivel end.
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