RE: How hot have you gotten your Nitro Enigne  
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RE: How hot have you gotten your Nitro Enigne - 2/9/2005 3:31:07 PM   
yard-dart



Posts: 927
Joined: 3/6/2002
From: West Monroe, LA, USA
Status: offline
quote:

ORIGINAL: Fuelman

415 degrees, sustained.
This is of course run hot intentionaly and not by being too lean.
Various engines, none of them ever somked.

20% Cooper's T-Xtreme fuel


Brian,

You were the first person I thought of when I read this post's title. After reading through it a bit, I saw that you had left a response. I was going to leave a lot of the info you gave me on the phone the other night, but I see that you beat me to it. Nice job! Maybe some of these knuckleheads will catch on.

I think leaving a FAQ post would be a ton of help for a lot of people, pretty much the same way it has done on the Fuel forum, although many engine manufacturers may not like it. Like you said the other night, these companies love people to fry their engines, simply from a "$ALE$" point of view.

I did as you told me and went in on my high speed needle until I his the sweet spot. Yeah, it gets HOT, but it runs a lot better. This past Saturday, while we were running at the park, I brought my truck in an noticed that the engine was literally smoking. It had to be running at least around 350 degrees. Somebody walked up to me and told me I was about to ruin my engine. My response was "we'll see won't we". At the end of the day, after I had pretty much smoked everyone else on the track (including a Nitro Rustler, which is supposed to be the fastest ST on the market), the guy who made that comment was packing up his beaten, broken down truck. I was still running mine when he was leaving.

To all that read through this thread, take Fuelman's advice. He tries to destroy engines for a living. He knows what he's talking about.

John

< Message edited by yard-dart -- 2/9/2005 5:03:10 PM >

(in reply to Fuelman)
       Post #: 26

RE: How hot have you gotten your Nitro Enigne - 2/13/2005 4:59:01 PM   
gubbs3



Posts: 1403
Joined: 12/8/2001
From: Coon Rapids, MN, USA
Status: offline 		Many people over use a temp gun and take it religiously. That is not what it is for. Taking a temp reading is to learn what the temp for YOUR engine should be. There is not a magic number, which has already been stated. When you use a temp gun, leave it in your pocket until the end of your run, after you have tuned your engine for good performance, but still slightly rich. Then take the temp. This will be a general reference point for what temp range your engine is best in. Engines with a tighter pinch will generally need to be run hotter than loose engines. The Picco's I've owned had usually had a lot looser pinch than other Nova's and Rossi's. My engine was best in the 195-210 range. I had a Force Pro .12 which wouldn't run well unless it was over 250, closer to the 300 range. An O.S. .12 cvr was best in the 220-250 range.

It all depends on the engine. The proper needle setting will not have much to do with the "magic" temp. The "magic" temp for your engine is the one it runs best at. That should be the reference point you should use your temp gun for.

(in reply to yard-dart)
       Post #: 27

RE: How hot have you gotten your Nitro Enigne - 2/14/2005 1:34:56 AM   
Fuelman


 

Posts: 1070
Joined: 12/31/2001
From: Jordan, NY, USA
Status: offline 		Very well put Gubbs3. Let me add this if I may-
If you want both performance and some additional longevity; The only hard and fast rules are getting it warmed up to design fit as rapidly as possible. If the engine is running absoutly perfect and its not at least in the 230 degree neighborhood (measured at the base of the glow plug), your engine is over cooled and you will need to either block off some cooling (a little at a time) or remove a cooling fin or two. Never try to get your engine warmer by over leaning it.


_____________________________

Fuelman
Cooper Fuels LLC

(in reply to gubbs3)
       Post #: 28

RE: How hot have you gotten your Nitro Enigne - 2/14/2005 5:32:52 AM   
LLLosingit


 

Posts: 13
Joined: 12/1/2004
From: Des Moines, IA, USA
Status: offline 		My old force 21 powered Tmaxx used to run great at 290-300 and more than once I brought it in and found the temps to be over 400 and it ran fine afterwards, I got about 4 gallons through it before I bought a different engine. It still ran great when I pulled it out.

(in reply to Fuelman)
       Post #: 29

RE: How hot have you gotten your Nitro Enigne - 2/14/2005 11:44:09 PM   
E-Mo



Posts: 587
Joined: 1/4/2005
From: Bay Area, CA, USA
Status: offline 		i had a p o s force 12 that would not run right at the "golden rule" of eng tunning
leaned the sob out till it ran like a champ *345~365 that is where it would haul the oats
not overly concerned about damaging the eng, although a more exp one like my mt 12 is another story
ld3
20%

(in reply to LLLosingit)
       Post #: 30

RE: How hot have you gotten your Nitro Enigne - 2/19/2005 7:40:20 AM   
killer89



Posts: 547
Joined: 11/15/2003
From: San Juan Capistrano, CA, USA
Status: offline 		SH .21: 330* F... no problems... ran fine afterwards... replaced it later due to bearing failure (rust)

AE .15 (aka: TTR .15): 360* ran fine that same day.... not sure as far as longetvity... sold later...

ofna force .25: about 300*.... that same run it broke the piston bosses... (due to detonation i beleive) put it back together... still runs, but would never race it since the wrist pin is out on one side and barely in on the other...

os v01b: 240* runs great

rb s5: 230* runs great

ofna hyper 4 port: 300* runs fine today

_____________________________

hello.

(in reply to E-Mo)
       Post #: 31

RE: How hot have you gotten your Nitro Enigne - 2/20/2005 8:36:08 AM   
Richie-EB4



Posts: 2152
Joined: 3/17/2004
From: Cleveland, , UNITED KINGDOM
Status: offline 		Well after reading this thread my 323f looks ok...........but i have a question ??

Do any of you guys use or would think of using an after market cooling head and are they any good ??

I ask because my savage is geared low so i dont get much airflow over the head........so would a different head be an advantage or not ??

Cheers

_____________________________

Been away for a while........sleeping

(in reply to killer89)
       Post #: 32

RE: How hot have you gotten your Nitro Enigne - 2/20/2005 2:33:10 PM   
Fuelman


 

Posts: 1070
Joined: 12/31/2001
From: Jordan, NY, USA
Status: offline 		Richie

quote:

Well after reading this thread my 323f looks ok.......


If it is running good and not running too lean on you, I see no need for a larger head.

I have a few airplane engines that do not get to peak operating efficiency until they are in the mid 320's, one likes around 350. And remember that these engines are in a high speed wind blast!!


_____________________________

Fuelman
Cooper Fuels LLC

(in reply to Richie-EB4)
       Post #: 33

RE: How hot have you gotten your Nitro Enigne - 2/21/2005 1:19:42 PM   
jkulhanek



Posts: 620
Joined: 8/9/2004
From: LauncestonTASMANIA, AUSTRALIA
Status: offline 		412F, ran absolutely no different afterwards...

It runs best at 300-320F....


_____________________________

Kyosho Ultima RB, Ported O.S. .12 CV-X Hyper, CVEC Pipe.

(in reply to Fuelman)
       Post #: 34

RE: How hot have you gotten your Nitro Enigne - 3/3/2005 2:38:40 PM   
Nutoris


 

Posts: 30
Joined: 2/2/2005
From: memphis, TN, USA
Status: offline 		i just ran my gt10 at 220F and tho a rod lol smoke and every thing it is in the shop now should be out to day only 40$ to fix it but dam it wasnt even really hot

(in reply to jkulhanek)
       Post #: 35

RE: How hot have you gotten your Nitro Enigne - 3/3/2005 3:01:25 PM   
hpi_mt


 

Posts: 15
Joined: 2/4/2005
From: Horam, UNITED KINGDOM
Status: offline
quote:

ORIGINAL: Tricksligger

Hottest my engine ever got was 360F still runs fine. I run at 250-270 all the time and am on gallon 3. Lately Ive been running it lean and hot because I have a OS18 on the way. This torq .16 I have is a monster I dont think I could kill it if I tried. Its got 2 1/2 gallons ran through it and I run it hot all the time and its my first nitro(probably not broken in right) and it still has a ton of compression and starts on the 1st or 2nd pull every time. Never a air leak and super easy to tune. Great product by duratrax!!


i know this is a bit off topic but i bought a HPI MT of a mates mate with a torq 16 fitted
took it a part yesterday cos it wasn't starting and found a peace of metal floating around in the engine that had come off the piston. i'v only had it 2 days. so it is possible to break them

(in reply to Tricksligger)
       Post #: 36

RE: How hot have you gotten your Nitro Enigne - 3/16/2005 4:00:09 PM   
wonton


 

Posts: 5
Joined: 4/30/2004
From: camden, NJ, USA
Status: offline 		http://www.tesarta.com/www/resources/library/melting_points.html heres a list of metals and there melting point

(in reply to hpi_mt)
       Post #: 37

RE: How hot have you gotten your Nitro Enigne - 3/16/2005 4:03:27 PM   
wonton


 

Posts: 5
Joined: 4/30/2004
From: camden, NJ, USA
Status: offline 		http://www.tesarta.com/www/resources/library/melting_points.html here is the melting points of metals it may help a lil as long as u dont starve the engine of its oils

(in reply to jbooker82)
       Post #: 38

RE: How hot have you gotten your Nitro Enigne - 3/16/2005 6:22:02 PM   
tommythecat



Posts: 2025
Joined: 8/26/2004
From: Butler, PA, USA
Status: offline 		My trx 2.5 frequently hit 325 and up due to various issues that caused overleaning (fuel path obstructions, thick head shims and air leaks) Even with many overheatings caused by running overlean I still got into the 7th gallon before I felt a new P/S was needed, and even then I only replaced the P/S because of erratic idling, it actually was still running great except for at idle.

Since the rebuild I have taken to using a sock to obstruct the airflow over my head to allow it to reach min temps while running in winter, now I usually run it just under 300, but the heat is caused by the sock not by a lean condition, and as a result it seems to run better than ever and I'm on the 3rd gallon on the rebuild and it seems to get stronger and stronger with every tank I run through it.

BTW: I use Morgan sidewinder 20 N 10 L

and I run an aftermarket head (Golden Horizons) which in my opinion is a bit too much, menaing that it overcools the engine unless I obstruct the airflow (with my old stinky gym sock) Although I have been running in winter weather since I got the head, and still have yet to see how well it works in the 90+ degree summer weather.

(in reply to wonton)
       Post #: 39

RE: How hot have you gotten your Nitro Enigne - 3/16/2005 10:44:19 PM   
yazoo bass


 

Posts: 22
Joined: 1/29/2005
From: macon, GA, USA
Status: offline 		o s 18 cv runs great at 240

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rush/o.s.18. #1 mip.clutch savage.gears

(in reply to jbooker82)
       Post #: 40

RE: How hot have you gotten your Nitro Enigne - 3/20/2005 3:10:07 AM