Boost on a stock intercooler.
#1
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Boost on a stock intercooler.
Yes I did search, and found some close ideas but I was hoping for something more concrete, how much boost before the stock TMIC no longer is useful? Thanks.
Ben
Ben
#3
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Define "not useful"...
10psi is the consensus.  You can go more, but the boost period is shortened.  I've been running it up to 14psi myself without any observable problems; you can't run it at this kinda boost more than 10-15 seconds before the EGT's start going through the roof.
-Ted
10psi is the consensus.  You can go more, but the boost period is shortened.  I've been running it up to 14psi myself without any observable problems; you can't run it at this kinda boost more than 10-15 seconds before the EGT's start going through the roof.
-Ted
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Originally posted by RETed
I've been running it up to 14psi myself without any observable problems; you can't run it at this kinda boost more than 10-15 seconds before the EGT's start going through the roof.
-Ted
I've been running it up to 14psi myself without any observable problems; you can't run it at this kinda boost more than 10-15 seconds before the EGT's start going through the roof.
-Ted
#5
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Originally posted by Rpeck
If you fuel ratio is fine ... whats is the consenquenses of high EGT's or prolonged high PSI boost?
If you fuel ratio is fine ... whats is the consenquenses of high EGT's or prolonged high PSI boost?
and how much will a good FMIC cut down on that?
-Ted
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thanks ted, much obliged, will keep boost controller at ten till FMIC is bought, I know it will creep will bring it higher but at least not for long periods. thanks again.
ben
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why not front mount your stocker and try that first.. You only have to buy the piping and fittings.
How much better does it work up front?
Any percentages of effeciency gained?
I seen one guy running low 12s with the stock unit up front. Not sure how much boost and not sure about the turbo either. I think he said the turbo was stock.
How much better does it work up front?
Any percentages of effeciency gained?
I seen one guy running low 12s with the stock unit up front. Not sure how much boost and not sure about the turbo either. I think he said the turbo was stock.
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yeah I'd like to know that also.. is the stock better as a front mount?
I'm guessing the top mount isn't very good, I've heard anything from yeah it works fine to it doesn't flow much (if any) air through it.
Speaking of which, if I were to buy a fan and put it on, would it help much? And if so, which way should I make the air flow (I've also heard people SWEAR that air actually flows from in the engine bay through the intercooler and out the hood)
I'm guessing the top mount isn't very good, I've heard anything from yeah it works fine to it doesn't flow much (if any) air through it.
Speaking of which, if I were to buy a fan and put it on, would it help much? And if so, which way should I make the air flow (I've also heard people SWEAR that air actually flows from in the engine bay through the intercooler and out the hood)
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Yes, I have seen the heat rise out the scoop also.
I think a fan would be a waste for the top- mount setup. No room to mount the fan.
I think personally moving the intercooler up front with increase the intercooler capacity too cool up about 25 to 50% better.
I think a fan would be a waste for the top- mount setup. No room to mount the fan.
I think personally moving the intercooler up front with increase the intercooler capacity too cool up about 25 to 50% better.
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yeah it's not a bad idea.. I know a guy who'll weld me some pipe up pretty cheap, can probably get 2.5" mandrel bent piping for a FMIC made for around $100.
#14
Anyone know if a front mounted Mitubishi Starion intercooler will cool better than a front mounted T2 intercooler? I need to find an inexpensive intercooler for my 13bt datsun 510 swap.
thanks
John
thanks
John
#15
Originally posted by RotaryRevn
Anyone know if a front mounted Mitubishi Starion intercooler will cool better than a front mounted T2 intercooler? I need to find an inexpensive intercooler for my 13bt datsun 510 swap.
thanks
John
Anyone know if a front mounted Mitubishi Starion intercooler will cool better than a front mounted T2 intercooler? I need to find an inexpensive intercooler for my 13bt datsun 510 swap.
thanks
John
#17
Re: Boost on a stock intercooler.
Originally posted by TheTwinTurboRX-7
Yes I did search, and found some close ideas but I was hoping for something more concrete, how much boost before the stock TMIC no longer is useful? Thanks.
Ben
Yes I did search, and found some close ideas but I was hoping for something more concrete, how much boost before the stock TMIC no longer is useful? Thanks.
Ben
The problem there is no information any more concrete than what you have already read. There is no single psi after which your intercooler does not work. It all depends on your car, ambient temp, your mods, etc.
RotaryTurbo, aka Ben Marr, was pushing 18 psi through the stock top mount with a hybrid 60-1 turbo. He was running low 12s consistantly, with a best of 11.9 in the 1/4 mile.
As you can see, the stock top mount is fine for short runs.
see ya,
Kris
#18
Originally posted by GLHS
why not front mount your stocker and try that first.. You only have to buy the piping and fittings.
How much better does it work up front?
Any percentages of effeciency gained?
I seen one guy running low 12s with the stock unit up front. Not sure how much boost and not sure about the turbo either. I think he said the turbo was stock.
why not front mount your stocker and try that first.. You only have to buy the piping and fittings.
How much better does it work up front?
Any percentages of effeciency gained?
I seen one guy running low 12s with the stock unit up front. Not sure how much boost and not sure about the turbo either. I think he said the turbo was stock.
uh, you sure? low 12s with a stock turbo and stock intercooler? I find that hard to believe.
#19
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BDC was running 14psi (1 bar)with a 60-1 also using the stock I/C,but did some custom fabrication and had it work as an Air-to-Water intercooler...with a water jacket around it..
Last edited by Slammedblk7; 11-07-02 at 11:12 PM.
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Here is some 'concrete' information that might be useful. I quote that because it's internet research so who knows...
http://www.autospeed.com/A_0901/page...rc=suggestions
W
http://www.autospeed.com/A_0901/page...rc=suggestions
W
#21
Originally posted by Wheels
Here is some 'concrete' information that might be useful. I quote that because it's internet research so who knows...
http://www.autospeed.com/A_0901/page...rc=suggestions
W
Here is some 'concrete' information that might be useful. I quote that because it's internet research so who knows...
http://www.autospeed.com/A_0901/page...rc=suggestions
W
#22
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ReTed, you said that it'll detonate if the A/F ratio is fine. How so? If you have plenty of fuel wouldnt it be fine? Im not saying you can run 16PSI on the stock intercooler and still be making good power, just, how can it detonate with enough fuel? Thanks
#24
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Originally posted by dr0x
I was thinking of getting a saab fmic. Its about 12x14 and 2.5in thick. Looks a lot better than our stockers. Anyone have any stats on those puppies?
I was thinking of getting a saab fmic. Its about 12x14 and 2.5in thick. Looks a lot better than our stockers. Anyone have any stats on those puppies?
#25
I wish I was driving!
Originally posted by Roy James
ReTed, you said that it'll detonate if the A/F ratio is fine. How so? If you have plenty of fuel wouldnt it be fine? Im not saying you can run 16PSI on the stock intercooler and still be making good power, just, how can it detonate with enough fuel? Thanks
ReTed, you said that it'll detonate if the A/F ratio is fine. How so? If you have plenty of fuel wouldnt it be fine? Im not saying you can run 16PSI on the stock intercooler and still be making good power, just, how can it detonate with enough fuel? Thanks
Higher inlet temps lower the activation energy for the combustion reaction.
I have done another idea to help out my stock IC when I need it.
I plumbed my Nitrous system purge valve to a spary bar under my intercooler. At the push of a button I can fog nitrous at -127oF through my intercooler and out the hood scoop. I also designed a simple chip, operated off a switch, to cycle the system on and off every 5 seconds (on for one second) when I crank up the boost for hard runs.
I believe it is cold enough by the formation of frost in the IC fins...