How much do vented hoods reduce temps?
09-20-04, 10:58 PM
#28
5yr member, joined 2001
If I were looking to add cosmetics, then I would consider a vented hood.
If I were looking to lower coolant temps, then I would first consider the fan mod, a Miata thermoswitch, and a larger radiator. The most cost-effective solutions first.
If I were looking to lower coolant temps, then I would first consider the fan mod, a Miata thermoswitch, and a larger radiator. The most cost-effective solutions first.
09-20-04, 11:01 PM
#29
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Those "Z3" gills are hardly vents!
I would opt for a Mazdaspeed one,..l.
I read a big article and even had a thread started in the past (ahem, somewhere else) about temps and how to lower them and a couple of "vent" owners didn't see much of a change, others did, oh well....
I would opt for a Mazdaspeed one,..l.
I read a big article and even had a thread started in the past (ahem, somewhere else) about temps and how to lower them and a couple of "vent" owners didn't see much of a change, others did, oh well....
09-20-04, 11:02 PM
#30
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Originally Posted by JONSKI
If I were looking to add cosmetics, then I would consider a vented hood.
If I were looking to lower coolant temps, then I would first consider the fan mod, a Miata thermoswitch, and a larger radiator. The most cost-effective solutions first.
If I were looking to lower coolant temps, then I would first consider the fan mod, a Miata thermoswitch, and a larger radiator. The most cost-effective solutions first.
I plan on doing those 2-3 things before a hood as well
. the thread i started was about the most EFFECTIVE way to reduce temps...
09-20-04, 11:31 PM
#31
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Originally Posted by lopedl
I would just send it to you in a pm, but since this thread is in reference to hoods, I'll post the pict.
is that your car? its RHD
09-21-04, 09:10 AM
#36
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I think a vented hood would drop temps noticeably. I just pop my hood before going up my driveway to park, and you can see the heat practically pouring out.
I heard that if you remove the power steering and the a/c the underhood temps will go down considerably for those of you who don't want a vented hood.
I heard that if you remove the power steering and the a/c the underhood temps will go down considerably for those of you who don't want a vented hood.
09-21-04, 09:36 AM
#37
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Originally Posted by technician
I heard that if you remove the power steering and the a/c the underhood temps will go down considerably for those of you who don't want a vented hood.
Everyone also keep in mind that underhood temps and coolant temps are two distinctly different things. I would expect a vented hood to have at least a slight effect on coolant temperature but I would expect it to have a much greater one on underhood temperature. (FYI the first thing I do when crossing the finish line after a run is pop the hood. The short cruise back to the paddock does help in cooling everything off. Not much, but it's free. A garden sprayer takes care of the rest.)
Last edited by DamonB; 09-21-04 at 09:41 AM.
09-21-04, 10:37 AM
#38
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Wouldn't removing parts under the hood create more air flow so that heat can escape more easily?
That's what I noticed when I had a '86 SE and started to removed "stuff."
Generalchaos, I pressure wash my engine once a week, so water in the engine area is not a problem.
That's what I noticed when I had a '86 SE and started to removed "stuff."
Generalchaos, I pressure wash my engine once a week, so water in the engine area is not a problem.
09-21-04, 02:25 PM
#41
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Originally Posted by BATMAN
Wouldn't removing parts under the hood create more air flow so that heat can escape more easily?
That's what I noticed when I had a '86 SE and started to removed "stuff."
Generalchaos, I pressure wash my engine once a week, so water in the engine area is not a problem.
That's what I noticed when I had a '86 SE and started to removed "stuff."
Generalchaos, I pressure wash my engine once a week, so water in the engine area is not a problem.
09-21-04, 05:52 PM
#42
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Originally Posted by BATMAN
, I pressure wash my engine once a week.
09-21-04, 06:22 PM
#43
Originally Posted by DamonB
Don't believe everything you hear. Ask yourself a very simple question: What does removing the power steering and the a/c have to do with making underhood temps less??? The a/c and power steering do absolutely nothing in heating the surrounding air up compared to the engine, turbos and exhaust and I assume you would keep all of those...
Everyone also keep in mind that underhood temps and coolant temps are two distinctly different things. I would expect a vented hood to have at least a slight effect on coolant temperature but I would expect it to have a much greater one on underhood temperature. (FYI the first thing I do when crossing the finish line after a run is pop the hood. The short cruise back to the paddock does help in cooling everything off. Not much, but it's free. A garden sprayer takes care of the rest.)
Everyone also keep in mind that underhood temps and coolant temps are two distinctly different things. I would expect a vented hood to have at least a slight effect on coolant temperature but I would expect it to have a much greater one on underhood temperature. (FYI the first thing I do when crossing the finish line after a run is pop the hood. The short cruise back to the paddock does help in cooling everything off. Not much, but it's free. A garden sprayer takes care of the rest.)
The PS doesn't take up much room in front of the radiator, just the cooling loop. The pump takes up a little space but if you ditched both the PS and the AC you can also ditch the big bracket that holds them on.
Removing the PS isn't a good idea if you ever plan to auto-x. Ditching the AC is a personal choice, I couldn't live without it.
09-21-04, 06:25 PM
#44
Originally Posted by BATMAN
Wouldn't removing parts under the hood create more air flow so that heat can escape more easily?
That's what I noticed when I had a '86 SE and started to removed "stuff."
Generalchaos, I pressure wash my engine once a week, so water in the engine area is not a problem.
That's what I noticed when I had a '86 SE and started to removed "stuff."
Generalchaos, I pressure wash my engine once a week, so water in the engine area is not a problem.
09-21-04, 06:58 PM
#45
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Originally Posted by SteveF
Well, there would be less metal to "heat soak" so I think it may be a bit easier to cool the engine bay temperature down...I don't know if it would be noticible though...
I was thinking of less stuff in there the faster and easier the air would flow in and outta the engine area.
right?
09-21-04, 07:00 PM
#46
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Originally Posted by turbojeff
I would say it is generally not a good idea to wash the engine weekly. No need to get it wet that often and it shouldn't get hardly any dirt on it in a week.
I will push the head right in the alternator and clean out the dust at 2000psi.
been doing this for 5 years with ZERO problems.
it's an original alternator at 230k miles so something must be right.
09-21-04, 08:57 PM
#47
Originally Posted by BATMAN
I got new harnesses and it's never been a problem.
I will push the head right in the alternator and clean out the dust at 2000psi.
been doing this for 5 years with ZERO problems.
it's an original alternator at 230k miles so something must be right.
I will push the head right in the alternator and clean out the dust at 2000psi.
been doing this for 5 years with ZERO problems.
it's an original alternator at 230k miles so something must be right.
Washing the motor every week is excessive and will lead to corrsion in places you wouldn't likely expect, the alternator isn't one of them. The alternator is well vented and spins all the water off the internals as soon as you start the car, any residual water will be evaporated away from the heat the alt produces since it is well vented.
I don't care if you do it, I'm trying to prevent some newbie from trying to mimic you.
09-21-04, 11:16 PM
#48
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I have been choosing between the RE AD9 Hood and the Scoot!
Would any one have experience as to which one or either would have more or less clearance for a single turbo than the stock hood.
It looks to me like the scoot hood actually has a bubble to it in the middle but both hoods look to have vents that actually go down into the engine bay that would actually take up hood clearance!
I am trying to install a rather large turbo under the stock hood with a 20B install and could use some more room..as well i would love to have a vented hood for heat extraction!
The turbo installed right now is tilted downwards to fit and comes within 1/4" of the hood...and the new turbo i have coming is almost 2" bigger in diameter.....
Picture included to show turbo location!
Would any one have experience as to which one or either would have more or less clearance for a single turbo than the stock hood.
It looks to me like the scoot hood actually has a bubble to it in the middle but both hoods look to have vents that actually go down into the engine bay that would actually take up hood clearance!
I am trying to install a rather large turbo under the stock hood with a 20B install and could use some more room..as well i would love to have a vented hood for heat extraction!
The turbo installed right now is tilted downwards to fit and comes within 1/4" of the hood...and the new turbo i have coming is almost 2" bigger in diameter.....
Picture included to show turbo location!
09-21-04, 11:21 PM
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Originally Posted by 95R2-89TII Ground Zero
That's a hot *** car man. What lip is that?
09-21-04, 11:26 PM
#50
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Originally Posted by Auto Illusions
I have been choosing between the RE AD9 Hood and the Scoot!
Would any one have experience as to which one or either would have more or less clearance for a single turbo than the stock hood.
It looks to me like the scoot hood actually has a bubble to it in the middle but both hoods look to have vents that actually go down into the engine bay that would actually take up hood clearance!
I am trying to install a rather large turbo under the stock hood with a 20B install and could use some more room..as well i would love to have a vented hood for heat extraction!
The turbo installed right now is tilted downwards to fit and comes within 1/4" of the hood...and the new turbo i have coming is almost 2" bigger in diameter.....
Picture included to show turbo location!
Would any one have experience as to which one or either would have more or less clearance for a single turbo than the stock hood.
It looks to me like the scoot hood actually has a bubble to it in the middle but both hoods look to have vents that actually go down into the engine bay that would actually take up hood clearance!
I am trying to install a rather large turbo under the stock hood with a 20B install and could use some more room..as well i would love to have a vented hood for heat extraction!
The turbo installed right now is tilted downwards to fit and comes within 1/4" of the hood...and the new turbo i have coming is almost 2" bigger in diameter.....
Picture included to show turbo location!