2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

H/E Pump ?

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Old 01-18-2008, 12:38 PM
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Originally Posted by RaineMan
good grief this is giving me a headache...

without all the Mr Wizard crap...

Let's say I install a Cobra HE. Would I gain anything from upgrading the pump?
yulp!

my temps at part throttle average between 6-11 degree's above iat1 numbers. with my "mix" of meth/water i have yet to see over 125 degree's on intake temps after the blower. it is very very critical to get ALL of the air out of the system, or else you're just fighting a losing battle
Old 01-18-2008, 12:50 PM
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Originally Posted by Area47
yulp!

my temps at part throttle average between 6-11 degree's above iat1 numbers. with my "mix" of meth/water i have yet to see over 125 degree's on intake temps after the blower. it is very very critical to get ALL of the air out of the system, or else you're just fighting a losing battle
What pump did you upgrade too?
Old 01-18-2008, 01:00 PM
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who said anything about upgrading? mines factory issue


it's all in the water/coolant ratio mix. also, get every single little air bubble out of the system. you'll be amazed at how much it drops
Old 01-18-2008, 01:17 PM
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Thermodynamics and Fluid mechanics folks 101.

Again it all has to do with Pressure, Temp., Flow, time and your coolant mixture. haha

Please don't don't make me go into due points and **** like that because then it just gets way to complicated. haha

cheers
Old 01-11-2009, 06:38 PM
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So in order of 1,2 where do Stock, The lightning pump stand?
Old 01-11-2009, 07:57 PM
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Originally Posted by 06black
wont be mean here,

basic stuff here.

presume that you still have the OEM dex-cool mix in your IC

now the stock pump has been matched to the cars OEM specs, adding HE's and such have an effect but only as great as that HE's PD across it. most fluid HE's arnt to bad here.

none the less, we have 4 ic cores, the fluid in stock form goes across all of them, picking up heat from them every moment the fluid is in the "hot" part of the system.

now if i have a pump that flows the IC fluid at a faster rate it will pick up less heat from the cores due to less transfer time.

and the opposite is true if you flow fluid to slow, you'll pick up as much heat as the fluid can hold(surface tensions, ect,ect determine that) now say it slows down enough to hit that max heat capacity in the 3rd core, so when it flow to the 4th it has no effect.

thus lowering your IC systems efficiency because your not pulling you maximum amount of heat out of the system.

even tho the fluid pulls more heat out of the first 3 cores that 4th core is hot enough to offset the system in a negative manor.
each drop of water will have less time to absorb heat, that is correct. but your not supposed to be considering heat transfer per unit water...you should be focusing on heat transfer per unit time. higher flow means the water in the IM will have been there less time, so it will be cooler since each unit of water has not had as much time to absorb heat, just as you said. this also means though that the temperature differential between the IAT2 and the water will be greater, meaning the heat will transfer to the water faster, and since the unit will always have water flowing through it (unless there are air bubbles), there will be more heat energy absorbed per unit time.

If you go by heat absorption per unit water, then the most efficient system would be one that does not flow, which is clearly not the case...



To answer the OPs question, meitzer(sp?) makes several higher flowing pumps...some really intense ones too.
Old 01-11-2009, 08:52 PM
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Originally Posted by RedHotJamLedJimi
So in order of 1,2 where do Stock, The lightning pump stand?
cobra/lightning/harley truck/sssc all run the same bosch pumps
Old 01-11-2009, 08:59 PM
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I could be mistaken, but I thought there was a Meziere pump out there that was basically the same size but higher flowing... downside was it cost $250, so nobody got one.
Old 01-11-2009, 09:13 PM
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click...good info here
Old 01-11-2009, 09:17 PM
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i have a mezier pump awaiting install. it cost me $189, much cheaper than replacing a bosche pump every 2 years. the meziere pump flows 20gpm opposed to about 7gpm with the bosche.
Old 01-11-2009, 10:57 PM
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Originally Posted by Sharkey
i have a mezier pump awaiting install. it cost me $189, much cheaper than replacing a bosche pump every 2 years. the meziere pump flows 20gpm opposed to about 7gpm with the bosche.
this is the one you were thinking of joe. they have pumps up to like...i wanna say 40gpm but theyre pretty pricey and a little bulky.
Old 01-11-2009, 11:01 PM
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Originally Posted by HunterKiller89
this is the one you were thinking of joe. they have pumps up to like...i wanna say 40gpm but theyre pretty pricey and a little bulky.
Yeah, I've used thier products in other applications, custom builds and such. They are really nice, just more expensive than most people would expect and to the average cheap-ass Cobalt owner, the $89 pump is a better deal than the $189 pump, all they see is the price

I was gonna do one next time I had a pump crap out on me (I was on my third pump, in an 06 car), but the car got stolen before I had a chance.
Old 01-12-2009, 12:19 AM
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one nice thing about the meziere is its rated for 3000 hours and its fully rebuildable. iirc the bosche pump is rated for something like 1000 hours.
Old 01-12-2009, 12:21 AM
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Originally Posted by Sharkey
one nice thing about the meziere is its rated for 3000 hours and its fully rebuildable. iirc the bosche pump is rated for something like 1000 hours.
Yeah, thats the thing that sucks about the stock pump, they crap out way too fast, and its just the brushes inside wearing the **** out. I took one down to see whats up, but rebuilding it got too frustrating for me and I didn't do it. I have like 5 dead pumps in my garage right now from my car and others
Old 01-12-2009, 02:25 AM
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ok so its ok to run the stock heat exchanger with the cx heat exchanger in series on just my stock pump right?? would it be better just to have my front mount cx or both??? Also what is the best coolant mix for the h/e should i use the recommended 50/50 or would it be better to have more water then coolant or viseversa??
Old 01-12-2009, 02:53 AM
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more water is better, but if it freezes, then your whole system wont be very happy (and might break). since im in LA, i run straight water, but if your in a colder area i dont recommend it. Its better to run both of those btw, and its fine to do so on the stock pump
Old 07-09-2010, 05:24 PM
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im bringing back a dead thread haha.

but whats a good way to tell if your pump is not flowing very much water. on the bottom half of my H/E it feels like there is a good amount of preasure coming outta the pump. on the other side on the end plate there is like no or very little preasure. the pump is running tho. is it just dying or what? do i have a clog???
Old 07-09-2010, 05:53 PM
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The pump will have pretty good pressure drop running through a stock system plus an extra H/E and all other kinds of stuff. Your option B without a restrictor drops pressure at the endplate as well.
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