2 tips to run cooler
- purplehayz
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I give up. Through my own experience it is more efficient, maybe in conjunction with all other mods done but I run 110% cooler then the stock 2.0L motor. Concidering I've got a high output 2.4L with nearly 300 hp red lining at 9200 rpm I must have gotten something right. Like I say maybe it's in conjunction with everything else but regardless I've got double the hp of a stock DOHC almost 2000 rpm more and I'm cooler. Everyone going on about thermal efficiancy okay you're ritgh but the more you build up a motor the more you must compensate. This is where such as weight and ballancing and such. And I've found a dyno to rent give me a few days and i'll post results.
Honda has 1.6L
Mountain Dew has 2.0 L
My NEON has 2.4L
Wanna Play?
Mountain Dew has 2.0 L
My NEON has 2.4L
Wanna Play?
You're running 110% cooler than a stock engine? Does that mean your block is frozen? I don't want my engine to run cold. An engine that cant meet its proper operating temp wont be very efficient. You cant ignore the engineering behind engine design when building one.

I would love to see a dyno chart of a 2.4 revving to 9,200 RPM. Please post it.purplehayz wrote:Concidering I've got a high output 2.4L with nearly 300 hp red lining at 9200 rpm I must have gotten something right.

- purplehayz
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- Joined: Wed Aug 01, 2007 1:19 pm
- Location: New Lowell, On.
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My bad that's 10% cooler not 110% --2 much coffee spilt on keyboaard -- sticky
My Dyno run is slated for next week, Results will be posted believe me the car goes like a bat out of hell.
The hole reason she's fully sponcered. All the hard work is paying off.
Happy reven this weekend!
My Dyno run is slated for next week, Results will be posted believe me the car goes like a bat out of hell.
The hole reason she's fully sponcered. All the hard work is paying off.
Happy reven this weekend!

Honda has 1.6L
Mountain Dew has 2.0 L
My NEON has 2.4L
Wanna Play?
Mountain Dew has 2.0 L
My NEON has 2.4L
Wanna Play?
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Re: 2 tips to run cooler
Wait..plasic intakes are on a SOHC not DOHC..so how would that work? If someone already answered this sorry, i see X's on all but like 3 posts.purplehayz wrote:To all of u with a plastic intake manifold, get rid of it. go 2 scrapper and find the aluminum ones. Standerd on r/t and expressos. intake runs 20% cooler and can be pollished like glass.
http://memimage.cardomain.net/member_im ... 4_full.jpg
Excellant how-to @ http://www.angelfire.com/space/neon/manifold.html
2nd modify your rad mouts I saw it on another site and it gives 1 more inch for air to travel infront of motor.Remove mount pivot 45 deg and cut excess pic will follow I've got to take 1
Now, wouldnt it be simpler just to get an aluminum SOHC intake manifold for a SOHC?
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- Location: MEXICALI
This is my experience on trying to run a cooler engine:
In mexicali, summer temperatures exceed 120ºf sometimes up to 126ºf, neons are prone to overheating, thanks to badly designed radiator, the water outlets are so close, half of the radiator is useless, water cant circulate through the entire radiator. I went to a radiator shop, they made the upper tank of metal to put the outlet on the oposite side...things are very different, now the engine runs "normally" at +/- 200ºf. I dont use a thermostat on summer, only during winter. Oh! Now I can use the A/C, whereas other 1GNs CAN'T
(sorry for my "engrish", i hope you understand what i mean)
Now looks like this:

In mexicali, summer temperatures exceed 120ºf sometimes up to 126ºf, neons are prone to overheating, thanks to badly designed radiator, the water outlets are so close, half of the radiator is useless, water cant circulate through the entire radiator. I went to a radiator shop, they made the upper tank of metal to put the outlet on the oposite side...things are very different, now the engine runs "normally" at +/- 200ºf. I dont use a thermostat on summer, only during winter. Oh! Now I can use the A/C, whereas other 1GNs CAN'T
(sorry for my "engrish", i hope you understand what i mean)
Now looks like this:


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- 1GN n00b
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6(sic)6 wrote:^How can you claim an aluminum intake mani vs a plastic one runs "cooler" The aluminum heat-soaks like a motherfucker in about 5 minutes, Plastic one never does.....
ps, you can port the plastic one also.....
I couldn't agree more; it's pretty obvious. Stick your hand on the plastic manifold once the car gets hot then try it with the aluminum one

I am thinking about porting my plastic mani but it looks rather a pain to get it off, what has to be removed, is it as big of a job as it looks?
In the beginning the patriot is a scarce man, brave, hated, and scorned. When his cause succeeds however, the timid join him, for then it cost nothing to be a patriot.
Mark Twain
Mark Twain
- custom95neon
- 1GN Registrant
- Posts: 285
- Joined: Sun Apr 18, 2010 9:13 pm
- Location: Richmond IN
To all of u with a plastic intake manifold, get rid of it. go 2 scrapper and find the aluminum ones. Standerd on r/t and expressos. intake runs 20% cooler and can be pollished like glass,


Last edited by custom95neon on Thu May 13, 2010 7:45 pm, edited 1 time in total.
- custom95neon
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- Joined: Sun Apr 18, 2010 9:13 pm
- Location: Richmond IN
last post on May 13 2010, but I just got to read some of this..
Plastic may run cooler, but I'll keep my Aluminum on my car. (expresso DOHC) and about the 20mpg because your car was running too cool, I had the same problem when I was using no thermostat, BUT, 20mpg is the downfall. My car was noticably faster. How? PCM. Senses everything! Senses if it's too cold, it injects more fuel, which ignites, which produces fire, which causes heat. Colder your engine, more fuel gets burned, more power. Don't believe me? lol then Don't. Test it yourself, you'll see. I did anyways.
Plastic may run cooler, but I'll keep my Aluminum on my car. (expresso DOHC) and about the 20mpg because your car was running too cool, I had the same problem when I was using no thermostat, BUT, 20mpg is the downfall. My car was noticably faster. How? PCM. Senses everything! Senses if it's too cold, it injects more fuel, which ignites, which produces fire, which causes heat. Colder your engine, more fuel gets burned, more power. Don't believe me? lol then Don't. Test it yourself, you'll see. I did anyways.
boostless_98 wrote:I want to hear wat everyone has to say on the idea of right hand drive neon conversion. I know it can be gotten from australia.
Ianguilly wrote:Just drive from the passenger side.