Bowmans Mod Shop

[Omega1]

Ok,thats easy.
cheers for that.

[martinakerman]

Can some one tell me or a link or if i can send some where
in europe to mod my Mach 2 to 404 or 507 ?
Can i just change the gas?
I dont want to mod the cap tube.
Thanx

[chilly1]

PM macci he was setting up shop last I heard.
You can mod it by only adding a schrade valve pulling a good vacume and adding R404a or R507 both gasses are approved under the okoyoto agreement and are used in europe, No other modifications to you unit will be nessassary, If you can find a willing Refrigeration tech with the proper equipment PM me and I will assist him in moding your unit.

[Tom Holck]

Originally posted by martinakerman
Can some one tell me or a link or if i can send some where
in europe to mod my Mach 2 to 404 or 507 ?
Can i just change the gas?
I dont want to mod the cap tube.
Thanx

Where you live, there are a lot of AC company. Tell them to mod your Prommy.

a valve to fill. 1.5 extra cap tube 0.8 mm a small drier on the back pipe. and fill with R404.

No big deal, many can help you there. Get a little to mutch R404 and take a little of, hven you have the load from the computer. But extra fan yourself.

The cost in Spain 130-150 euro


:

[Stan]

sorry but... what does tom's pic above show? 9dont really get why the insulation is ripped

[Nico]

Originally posted by Tom Holck


small drier on the back pipe

[Tom Holck]

Originally posted by Nico

Right

The R404 get a change to condensate before the kompressor.

You can also do as Bowman: Make a bigger tube on the return.
same thing

[martinakerman]

Ok i will try to find some AC company to do it.
Thank you for the advices.
Other thing... will the compressor be able to manage 507 without
problems?
what temperatures do i have to expect after the mod?
---------------------------------------------------------------------------------
Second thing, have you ever heard about "Heat stink too tight,so pc doesent boot" ?
on Asus P4C800 Deluxe No video signal,just a voice saying
"System Fail Cpu Test,System Fail Cpu Test..over and over again"
I found many people with this problem also with original boxed cooler no Overclocking.

Well this happened to me, after having my Mach 2 working perfect for 1 month ,suddenly pc got freezed.
After restarting no post again.

So i had to re install the Evaporator and i tried no to over tight the screw.. and system posted again.

Now is working but if i tell you the truth...the pc is not the same.
Before this happened was 100 % Stable ( 260 Fsb 1:1 1.65v 3.0c@3.9Ghz) It could do every benchmark.

And now PcMark04 Freezes in Cpu tests etc.
Temps are the same as before, volts.. etc.
I really dont know what to think.

Or was that for a month i was lucky to OC @3.9 ? i dont think so.

Well, i hear any tip..thanx again.

[Tom Holck]

Originally posted by martinakerman
Ok i will try to find some AC company to do it.
Thank you for the advices.
Other thing... will the compressor be able to manage 507 without
problems?
what temperatures do i have to expect after the mod?
---------------------------------------------------------------------------------
Second thing, have you ever heard about "Heat stink too tight,so pc doesent boot" ?
on Asus P4C800 Deluxe No video signal,just a voice saying
"System Fail Cpu Test,System Fail Cpu Test..over and over again"
I found many people with this problem also with original boxed cooler no Overclocking.

Well this happened to me, after having my Mach 2 working perfect for 1 month ,suddenly pc got freezed.
After restarting no post again.

So i had to re install the Evaporator and i tried no to over tight the screw.. and system posted again.

Now is working but if i tell you the truth...the pc is not the same.
Before this happened was 100 % Stable ( 260 Fsb 1:1 1.65v 3.0c@3.9Ghz) It could do every benchmark.

And now PcMark04 Freezes in Cpu tests etc.
Temps are the same as before, volts.. etc.
I really dont know what to think.

Or was that for a month i was lucky to OC @3.9 ? i dont think so.

Well, i hear any tip..thanx again.

You can do 507, but i will recommend R404 no big difference.
secund?? No.. or corrosion? -you moved the cpu a little
something might be damage

[martinakerman]

When i re assembly it i did not find any corrosion on Cpu or Evaporator, no rest of condensation..
Sorry but i dont undestand you when you said:
-you moved the cpu a little
something might be damage

Can you explain it again,sorry i am spanish.

[chilly1]

Originally posted by Tom Holck
You can do 507, but i will recommend R404 no big difference.
secund?? No.. or corrosion? -you moved the cpu a little
something might be damage

R404A is 507 with 134 added to reduce head pressure. In the modified Prommie there is too much condenser as originally configured. So I use R507 as the higher head and the original captube/condenser gives me four to six degrees and about 10 watts more cooling.

[martinakerman]

When you said : "So I use R507 as the higher head and the original captube/condenser gives me four to six degrees and about 10 watts more cooling."

Are you saying that only changing gas to R507 with Original Captube and condenser you got -4 to -6 over R404 ?

[Tom Holck]

Originally posted by martinakerman
When i re assembly it i did not find any corrosion on Cpu or Evaporator, no rest of condensation..
Sorry but i dont undestand you when you said:
-you moved the cpu a little
something might be damage

Can you explain it again,sorry i am spanish.

I only gess what happend. You might have some corrosion on the legs of the CPU. when you put the coolinghead on again, you moved the CPU a little in the socket, then it workt again. OR... There might be someting wrong now, some damage somewhere..

[chilly1]

Originally posted by martinakerman
When you said : "So I use R507 as the higher head and the original captube/condenser gives me four to six degrees and about 10 watts more cooling."

Are you saying that only changing gas to R507 with Original Captube and condenser you got -4 to -6 over R404 ?

Yes and I get better loaded temps because of the increase in head and refrigerant flow..

[Nico]

Chilly1,

Whats the drop from R134A to R507 just changing gas only?

[nietsni3]

has anyone used R508?????

[Pandrone]

Originally posted by nietsni3
has anyone used R508?????

R508b i think is a highpressure gas(used in cascade systems and such).

[chilly1]

Changing gas only with a mod for fan control and tuned for best load and temperatures you will get 20 to 30 degrees at the head unloaded loaded temps vary according to load.

Fuggers cascade originally had Pure 508B now it has a blend of R1150, R508 and R290, I used the 508 to reduce the head pressure and the R290 to thin the oil and cool the compressor.

[nietsni3]

question, if a phase change system is slow to start cooling things (example, CPU), what kind of problem with that system could you think of? does it need gas recharging?



why is this thread not sticky any more????

[Nico]

Originally posted by nietsni3
question, if a phase change system is slow to start cooling things (example, CPU), what kind of problem with that system could you think of? does it need gas recharging?



why is this thread not sticky any more????

If the cooler takes a long time to get down to temp, then it usually has a lower charge in it. That may not be a bad thing, if it holds good temps when it gets there.

[nietsni3]

so, to fine tune a system to maximize the speed, what do you suggest?

[chilly1]

A system that is slow to cool but still gets down to temperature it may be that the mass of the block is too high an dthat must first be cooled or the ststem is under a large load and it must also pull the tamps down at the same time it is cooling.

On to your second question pick the proper forum if it is about processor speed if it is about cooling what do you need to know...

And Why is this not a stickie anymore??? no activity in it for quite a while... Better to post on the forum...

[Nico]

Originally posted by nietsni3
so, to fine tune a system to maximize the speed, what do you suggest?

It seems the best way is to start with enough refrigerant in the system to start the compressor. Start the cooler up and add more refrigerant until it starts to reach negative figures on the evaporator. Now start the PC and put as higher load on it as possible, watching temps of course. You can now start adding more refrigerant until it reaches it's coldest temp, then your done.
Of course the idea would be to add small amounts of refrigerant, and try to increase the load as much as possible, in steps. This way you are optimising your clks at the same time.

Chilly1,

That's a good ponit about evaporator mass, as it explain why Prommies have always done so well, but take forever to cool down. That mass will control heatspikes much better too.

[chilly1]

The modded prommies that I do will pull down in about 3 minets to the minimum temperature.

[Omega1]

chilly1 what else do you do to mod the prommys?
Is there anything else I can do other than regassing with r507
is it better to add another dryer on the suction line so it will take more refrigerant without flooding?And if I was to add captube
how much .026 (which is all I can get) would be suitable?
Cheers.