Single Turbo RX-7's Questions about all aspects of single turbo setups.

post your EGT temp

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Old 01-25-02, 07:06 PM
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post your EGT temp

I run 1390 the EGT is 4 inches from turbo
Old 01-25-02, 08:14 PM
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Re: post your EGT temp

no one has a EGT????
Old 01-26-02, 01:00 AM
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Mines at 700 and it's about 6" down from the downpipe at full boost and floored.
Old 01-26-02, 03:54 AM
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Originally posted by lone wolf
Mines at 700 and it's about 6" down from the downpipe at full boost and floored.
Your egt gauge is lying to you, My car idols hotter than that at around 780'F...

My sensor is in the exaust housing of the turbo.. It also seems to like around 820-880'C or 1500-1600'F the best...

Last edited by Dragon; 01-26-02 at 03:57 AM.
Old 01-26-02, 01:18 PM
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Originally posted by Dragon


Your egt gauge is lying to you, My car idols hotter than that at around 780'F...

My sensor is in the exaust housing of the turbo.. It also seems to like around 820-880'C or 1500-1600'F the best...
I have a Greddy EGT gauge and it takes measurement in Celsius. I forgot to mention that. I'm pretty sure it's right. The ideal temperature for being on the downpipe is 700'C and on the housing i think it was 900'C. You scared me for a moment there.
Old 01-26-02, 01:35 PM
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ahhh, that sounds much better...
Old 01-26-02, 02:43 PM
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mine is also in

celsius reads a tad over 900 at full boost, the probe is located in the exh housing of the turbine
Old 01-26-02, 02:44 PM
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that's funny...the guy in Japan has a meter that reads in SAE and the guy in the USA has one that reads metric. Why don't we just switch over to the metric system, make things a lot easier.
Old 01-26-02, 03:20 PM
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'cos metric sucks, that's why
Old 01-26-02, 03:53 PM
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Originally posted by peejay
'cos metric sucks, that's why
no, the gay american system sucks. metric is much easier and just makes more sense than the american system.
Old 01-26-02, 04:13 PM
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I love it when people don't get the joke.
Old 01-26-02, 04:16 PM
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It's what you're used to. In the end it's all just numbers. (You did note the smiley right?) But, this thread for example... I'm used to EGTs being discussed in Fahrenheit - the people on a mailing-list I'm on talk about their EGTs being in the 1450-1550 range, and I've seen where ideal for a turbo rotary is 1650, but that doesn't take into account different porting, different ignition timing, different types of fuel, where exactly the probe is placed, how good the intercooler is, etc. etc. And then to throw the wrench into the works now I've got to mentally convert degC into degF so I can apply more knowledge to my mental database (which is calbirated in Fahrenheit), hence my mild frustration and snide little comment.

Also, in the US, it seems that all the companies that cater to the "rice market" calibrate their gauges in metric because it's different from standard (in the US remember).

FWIW - 700degC is 1292egF, 900degC is (let's see, 180degF for every 100degC, therefore...) 1652degF. Beauty.

Last edited by peejay; 01-26-02 at 04:20 PM.
Old 01-26-02, 09:01 PM
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WHAT ARE YOU TALKIN ABOUT

sorry guys my falt I whould have specified..degF

we should switch to metric though " what is the next size up form 9/16???huh I think it is 5/8 huh I think so try it"
Old 01-27-02, 06:21 AM
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Mines metric, I just converted to F for you USA guys... Metric is much better... Screw that SAE stuff...
Old 01-27-02, 11:55 AM
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Probe position in relation to the turbo (b4 or after) is going to make a good bit of difference due to the pressure difference b4 and after, and also due to the turbo absorbing some of the heat.
Old 01-27-02, 05:30 PM
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ok people let stop trying to sound smart there are to many veriables to what makes the temp hire or lower lets just post ower temps and exaust placement...

sorry for any hostilaty
Old 01-27-02, 07:50 PM
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Well I dunno about that... it does make a difference where the EGT is mounted.

Would it be risking inaccuracy to put the probe after the turbo? I only ask because all of the commonly available gauges only go up to 1600degF (err, 875degC ) and all of the gauges that read higher (like soul assassin's) are imported and quite expensive, and usually white faced. That's kinda petty I know, but call it a personal preference for black-faced gauges. Anyway, if it's reasonably safe to take the temps after the turbo, that means I have many more options for gauges.
Old 01-27-02, 08:06 PM
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yeah i like that gauge it is silver faced and lights up the same color as the stock interior lights
Old 01-27-02, 08:39 PM
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yes since the temp gauged is made to take exaust temp on the dyno, then compare it when ever driving or tuning to try to mantain that temp, the placment is not to specific within reason. just remember changing something can alter the temp which would requirer you to redyno which you should anyway after just about any mod.
Old 01-28-02, 03:48 PM
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I have a Westach EGT gauge purchased from Aircraftspruce.com for $80, including the probe. It goes up to 1700F and is black faced and the needle is white with a red tip. Also it is ergonomic in the sense that the needle never covers the number. Anyone ever wonder why do most gauges have the needle cover the numbers? Makes no sense to me. when you're driving over a 100 MPH and you glance at your gauge you can't quickly read the number if it is covered by the needle. You have to estimate that it lies between 2 numbers that you can read, in other words you have to do a mental calculation. I know this seems silly but when you're hauling *** you only want to glance at the gauge for a millisecond or so to get your reading then get your eyes back on the road.
Old 01-28-02, 04:21 PM
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sweet! BTW that's where the old trick comes in where you put your gauges in crooked - you align the gauge so that when it reads what it should be reading, the needle is pointing straight up, that way you just glance down and if the needle is pointing up you know that it's good. That's why I want a gauge and not one of those handheld units that you have to tape to the dash.
Old 01-28-02, 10:48 PM
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I don't know about you guys but I remember where the numbers are at or maybe I can see it dunno never had that problem??????
Old 01-29-02, 01:49 PM
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Mine runs about 800-900 degrees idling around town. On the freeway, it will run a solid 1200 degrees and dip down to 1100 sometimes when I lift the gas.

regards

Rick
1993 RX-7
Old 02-01-02, 10:25 AM
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Anybody knows where I can get a greddy fitting for my egt sensor. I just need the fitting that taps into the downpipe. I heard they are on backorder. Any help would be great. Thanks!
Old 02-03-02, 09:45 AM
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Mine reads 1450f 6 inches from the turbo


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