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Old 07-17-2008, 07:41 PM   #46
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Yup, right over the hole. I'm sure you will hear other variations but it really isn't rocket science...

$30 temp gun, take your pick. Doesn't matter if it is 10-20 degrees out... if the engine is producing good power and smoke in the right places the gun only needs to be consistent so if temps jump it shows there is a problem. My RB likes to be in the 240 ballpark by my gun, if by a super accurate temp gauge that's 218.22 or whatever... it doesn't matter. It's a rough indicator and trouble shooting tool.

Also handy when breaking in an engine... at some point it will loosen up and suddenly run rich as the engine starts running efficiently, a temp check confirms that's what's going on when you loose some power so you know it's not something else playing up.
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Old 07-17-2008, 08:52 PM   #47
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Originally Posted by IanWright View Post
Yup, right over the hole. I'm sure you will hear other variations but it really isn't rocket science...

$30 temp gun, take your pick. Doesn't matter if it is 10-20 degrees out... if the engine is producing good power and smoke in the right places the gun only needs to be consistent so if temps jump it shows there is a problem. My RB likes to be in the 240 ballpark by my gun, if by a super accurate temp gauge that's 218.22 or whatever... it doesn't matter. It's a rough indicator and trouble shooting tool.

Also handy when breaking in an engine... at some point it will loosen up and suddenly run rich as the engine starts running efficiently, a temp check confirms that's what's going on when you loose some power so you know it's not something else playing up.
..agreed 100%
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Old 07-17-2008, 09:01 PM   #48
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Originally Posted by MiamizFinest View Post
i love the fact u can turn off the motor with the temp gun its pretty nice


HOW by Stuffing the sensor in the exhaust pipe and Covering the all seeing EYE with nitro fuel...... are u serious ?
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Old 07-17-2008, 10:31 PM   #49
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Spit test works perfect for me. As long as I am not lean bogging and it blows smoke all the way down the straight away i am happy. I have plenty of power and always get over 10 minutes of runtime.
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Old 07-18-2008, 08:27 AM   #50
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Originally Posted by GH Racing View Post
the O'Donnell temp guns are great
i have had 2 of them 1 lasted 2 weeks the other lasted almost a month
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Old 07-18-2008, 08:30 AM   #51
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i have had 2 of them 1 lasted 2 weeks the other lasted almost a month



X2...IM ON #3 .....they dont seem to hold a battery for more then a couple days...and the sceen flicker's on and off when u squeeze the case......after this one im buying a Raytec....at least they have all been under warranty.
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Old 07-18-2008, 08:47 AM   #52
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I bouthg mine at AutoZone for 25. Acetron I think. prolly just rebadged. It is backlit and works GREAT.
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Old 07-18-2008, 08:54 AM   #53
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Originally Posted by slaytanic View Post
I bouthg mine at AutoZone for 25. Acetron I think. prolly just rebadged. It is backlit and works GREAT.


like the Raytec style gun ?
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Old 07-18-2008, 11:25 AM   #54
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Default HPI Temp Gun

Hey guys,

I just wanted to throw this out.. for an inexpensive option that always comes in close to the Exergen gun. Its the HPI temp gun... I've used this temp gun for 3 years now, and it always comes in within 2-3 degrees of the $250.00 exergen. Once you get experienced at tuning, you will be tuning for performance from sound and smoke and checking temps less often anyways. This thing just works awesome.. period.

- Its WAY cheaper than that Exergen
- It fits in your pocket well
- Its very accurate
- Its light and can handle a drop without damage
- The batteries are cheap $4.99 and last 1 year or more


here is the link to a reputable huge online shop where you can get one.
http://www.airlandhobbies.com/catalo...7170026389.htm

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Old 07-18-2008, 11:33 AM   #55
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https://www.carolinasrc.com/webstore...idproduct=1804

thats what I use, I dont know if the batteries can be changed though

Its usually 3 degrees off from the mercury thermometer in my garage.

the human body should be about 98F.. my temp gun reads my arm at 95F

not bad for a 30$ temp gun.
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Old 07-18-2008, 03:21 PM   #56
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Quote:
Originally Posted by Integra View Post
like the Raytec style gun ?
I just bought a Raytek MT6 for $44.99 plus $6.99 shipping (total cost $51.98). That was the best price I could find online with shipping included.

This same seller has the MT4 for $40.00 shipped

http://stores.ebay.com/CBM-Tools_Ray...QQftidZ2QQtZkm
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Old 08-06-2008, 02:11 AM   #57
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Default Best Temp Gun

Killer price, excellent performance, extremely durable, fits pocket well, and very accurate! I've used these for years.

http://www.airlandhobbies.com/catalo...7170026389.htm

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Old 08-06-2008, 02:19 AM   #58
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all the cheap hobby grade temp guns are inconsistent... sure one persons gun reads accurate, but the next 10 do not..... take 10 different HPI guns and compare results, my bet is there will be a 50 degree varience between all 10 guns........ I am only using the HPI gun as a reference, IMO all the hobby grade guns suffer the same characteristics..... no 2 are alike, some are closer then others, and some are so far out they would make you cry..
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Old 08-06-2008, 02:26 AM   #59
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Quote:
Originally Posted by Maximo View Post
all the cheap hobby grade temp guns are inconsistent... sure one persons gun reads accurate, but the next 10 do not..... take 10 different HPI guns and compare results, my bet is there will be a 50 degree varience between all 10 guns........ I am only using the HPI gun as a reference, IMO all the hobby grade guns suffer the same characteristics..... no 2 are alike, some are closer then others, and some are so far out they would make you cry..
are those extra 10 degrees really that critical to the engines performance, life, and tuning? whats a 10 degree difference when youre dealing with temps over 250F... like 2.5%, not much at all.

temps are for a rough estimate (anything in between 200-250 is the same, means youre fine, 250-300 is a little hot, 300+ is way too hot) not to tune your engine to the absolute perfect mixture of air/gas. although some engines are different, some engines run fine at 180F, some run fine at 280F.
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Old 08-06-2008, 02:38 AM   #60
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Originally Posted by Rowdyray View Post
I was looking for a temp gun aout a year ago. My son and several friends bought cheapos that never did live up to their expectations. I won't name names.

At the time a lot of people were talking about the Ray-Tech. Nice, but I didn't want to spend 80.00. Then I found this one at Napa, an auto parts store.



It's almost identical, but made by Performance-Tech. It was 40.00, and I took a chance. I've tested it against a number of thermometers, boiling water and even ice. All were within 5 degrees.

Well worth the money, and I can't say that about the others.
This is similar to the temp gun i use at work whilst checking temps of the fridges and feezers and it is always 99.9% accurate as there also is a temp read out screen on each fride/freezer and they generally match.


but i personally use a cheap 25 temp gun that seems to do an ok job to me.
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