R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 06-26-2008, 10:33 PM   #1
Tech Regular
 
Join Date: Mar 2008
Location: Boise
Posts: 320
Default How do you know when your engine is 'done'?

I see a lot of comments about how so and so's engine only lasted so many gallons. At what point do you say your engine is done? When it just won't run? Or when its lost its pinch?
Furadi is offline   Reply With Quote
Old 06-26-2008, 10:54 PM   #2
Tech Elite
 
rezenclowd3's Avatar
 
Join Date: May 2006
Location: Solvang, CA
Posts: 2,367
Trader Rating: 17 (100%+)
Send a message via AIM to rezenclowd3
Default

When it seems to have lost alot of punch and top end, when it randomly flames out, the tune starts to wander faster than normal, or it blows up
__________________
OOMSGFX.COM (no longer painting, but take a look for fun!), Roadrunners RC Club
"Racing drivers have balls, unfortunately, none of them are crystal" (David Coulthard)
"I believe the average IQ of a NASCAR fan is only marginally above the things that hit the windscreen during the race. "
rezenclowd3 is offline   Reply With Quote
Old 06-26-2008, 11:16 PM   #3
Tech Regular
 
Join Date: Mar 2008
Location: Boise
Posts: 320
Default

Gotcha, my Go 3 sport has lost all of its pinch but it still runs very strong. Only lost a bit on low end if anything. Meh, not going to complain about getting 8+ gallons out of a sport motor. Now it just needs to last me one more race before I get my 7 port
Furadi is offline   Reply With Quote
Old 06-27-2008, 05:57 AM   #4
Tech Adept
 
kevinmajor's Avatar
 
Join Date: May 2007
Posts: 192
Trader Rating: 3 (100%+)
Default

The tune will get really bad. It will start and be ok untill it gets up to temp and then usually flame out or run like crap. When the compression starts to go, I usually just sell it for parts and put a new engine in.
kevinmajor is offline   Reply With Quote
Old 06-27-2008, 06:11 AM   #5
Tech Regular
 
Join Date: Mar 2008
Location: Boise
Posts: 320
Default

Well, now I dont have to worry about it. Just ordered a Go 7 port!
Furadi is offline   Reply With Quote
Old 06-27-2008, 09:58 AM   #6
Tech Master
 
zJatoRad's Avatar
 
Join Date: Nov 2006
Location: McAllen, TX
Posts: 1,568
Trader Rating: 31 (97%+)
Send a message via MSN to zJatoRad
Default

after it's done you can send the 3 port's piston/sleeve for repinching for $20 bucks and then have it as a back up
__________________
"Smooth is Slow, and Slow is Fast"
zJatoRad is offline   Reply With Quote
Old 06-27-2008, 10:40 AM   #7
Tech Elite
 
Join Date: Mar 2008
Location: Erie Pa.
Posts: 3,323
Trader Rating: 19 (100%+)
Default

When you have a mill repinched how well does it perform?
malik is offline   Reply With Quote
Old 06-27-2008, 10:44 AM   #8
Tech Addict
 
wes95_z28's Avatar
 
Join Date: Nov 2006
Location: Norman, Ok
Posts: 747
Trader Rating: 3 (100%+)
Default

When regardless of what you do it just wont run anymore, thats usually when they are done.
__________________
Wes

Kyosho 777 WC w/ big bores, RB S5, ACE 1313 s., Air 357 t., JP-3
HPI Savage X SS, Axial .28, Hitec 5645 Steering servo
Nitro TC3, O.S. .18 CV-R
Associated RC18T, Brushless, Lipo
wes95_z28 is offline   Reply With Quote
Old 06-27-2008, 10:48 AM   #9
Tech Elite
 
rezenclowd3's Avatar
 
Join Date: May 2006
Location: Solvang, CA
Posts: 2,367
Trader Rating: 17 (100%+)
Send a message via AIM to rezenclowd3
Default

Losing mechanical pinch at temp is good, but losing compression is not. Many people think that a strong pinch means the engine is still good, but all it means is that it still is not fully broken in. Mechanical pinch puts ALOT of stress on the conrod, piston and, pin.
__________________
OOMSGFX.COM (no longer painting, but take a look for fun!), Roadrunners RC Club
"Racing drivers have balls, unfortunately, none of them are crystal" (David Coulthard)
"I believe the average IQ of a NASCAR fan is only marginally above the things that hit the windscreen during the race. "
rezenclowd3 is offline   Reply With Quote
Old 06-27-2008, 12:24 PM   #10
Tech Addict
 
Join Date: Apr 2007
Posts: 696
Trader Rating: 19 (100%+)
Default

When your conrod busts a hole in the case, she's done. Or when your buddy get's the lastest, greatest $500 mill and consistently smokes you down the straight, she's done. Or you get a bonus at work that your wife doesn't know about, she's done.
__________________
Dirt's for racing,asphalt's for getting there!
pooldoc is offline   Reply With Quote
Old 06-27-2008, 12:31 PM   #11
Tech Master
 
Akhor's Avatar
 
Join Date: Feb 2008
Location: Alberta,Canada
Posts: 1,280
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by malik View Post
When you have a mill repinched how well does it perform?
Really depends on how well it's re-pinched. But, if it's done right it should run like new.
Akhor is offline   Reply With Quote
Old 06-27-2008, 12:38 PM   #12
Tech Elite
 
Join Date: Oct 2004
Location: Michigan
Posts: 3,296
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by pooldoc View Post
When your conrod busts a hole in the case, she's done. Or when your buddy get's the lastest, greatest $500 mill and consistently smokes you down the straight, she's done. Or you get a bonus at work that your wife doesn't know about, she's done.
lol, that is funny!
And true.
__________________
Team Associated & CRC
Trackstar & Hobbywing esc's
Spektrum radios, GensAce batts, turnigy servos.
Keeping racing fun and affordable with my 8y.o. twins :)
The best track I've raced is the one in my backyard!
jbrow1 is offline   Reply With Quote
Old 06-28-2008, 03:25 AM   #13
Tech Fanatic
 
Join Date: Jan 2008
Location: All Over So. Fla.
Posts: 985
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by pooldoc View Post
When your conrod busts a hole in the case, she's done. Or when your buddy get's the lastest, greatest $500 mill and consistently smokes you down the straight, she's done. Or you get a bonus at work that your wife doesn't know about, she's done.
So very true
The Working Man is offline   Reply With Quote
Old 06-28-2008, 06:02 AM   #14
Suspended
 
Join Date: May 2008
Location: the other end of the driver's stand
Posts: 469
Default

Quote:
Originally Posted by pooldoc View Post
When your conrod busts a hole in the case, she's done. Or when your buddy get's the lastest, greatest $500 mill and consistently smokes you down the straight, she's done. Or you get a bonus at work that your wife doesn't know about, she's done.
........ or by simply sticking a fork in it







oldschoolracer is offline   Reply With Quote
Old 06-28-2008, 06:07 AM   #15
Tech Regular
 
Join Date: Mar 2008
Location: Boise
Posts: 320
Default

I'm going to keep running my Go 3 port for practice just to see how long it will last. By the way its going now im thinking at least 10.
Furadi is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
GO 28R/Full Starter Engine GRracing Ver.Team Fully Modified Engine handpiece Onroad Nitro Engine Zone 0 07-28-2007 02:42 AM
Ofna Picco .21B 3 Port engine, good budget engine Cain Electric Off-Road 1 03-26-2007 07:32 AM
selling custom savage roller with engine, truck zillia modded engine.$275 pat360xboxhalo3 R/C Items: For Sale/Trade 2 01-11-2007 04:23 AM
mugen mst1 with engine and pipe f/t for 1/8 buggy engine tony montana R/C Items: For Sale/Trade 5 08-22-2006 03:52 PM
Engine Temperatures for Break-In and Normal Use for XTM 24.7 Engine. Head Shims? racer rich Nitro On-Road 0 12-13-2002 10:49 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 08:18 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net