R/C Tech Forums

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

Thread Tools Search this Thread
Old 08-24-2010, 11:56 AM   #1
Tech Addict
cyclone speed's Avatar
Join Date: Jun 2008
Posts: 621
Default Seting up Nitro engine


I have a few question to ask over here as its been very helpfull lately
ok, a few weeks ago, my engine went to full speed, crashed into the wall, ran at full speed for 3 mins while being blocked by a wall and the heatsink go discolored. I went to my LHS, i changed the borken parts ( very litle ) but i also had to change the sleeve and the piston. Before i crashed i did a break in procedure as said by many people .
Today i tryed to start up my engine ( really want to run it ), on the first go it didnt start, i had to richen it a tiny bit so it could start up, once i got it running ( i was so dam happy ) i left it idling for about 1 min 30 secs and it was perfect, no speed change ....... Problem is that as soon as I took the glow start off the glow plug .. the engine shut off . I did it a few times and everytime it would light up but it wouldnt keep on running as soon as I took the glow start out .
Question : What could be causing it to shut off ?
Also, unfortunatly i have to do another break in procedure .... If i want to richen my engine so it doesnt run too hot and so that im safe, which screw do i need to open up ( un screw/ counter clockwise ) the High speed or the low speed ?
Last : What happens if i dont break it in, if i directly go to the park and run it, will there be some performance loss; or will it be ONLY engine life loss ?

Thank you
cyclone speed is offline   Reply With Quote
Old 08-24-2010, 12:01 PM   #2
Tech Master
pyromania's Avatar
Join Date: Feb 2009
Location: North Hills, CA
Posts: 1,283
Trader Rating: 18 (100%+)

Change your glow plug. That will solve the dying problem.
Jesse Carrillo
Team Driver For:
TLR | Horizon Hobby | Nitrotane | Spektrum | HandleITHobbies | 818 Designs
pyromania is offline   Reply With Quote
Old 08-24-2010, 12:25 PM   #3
Tech Addict
Do-Over's Avatar
Join Date: Jun 2010
Location: O-H....I-O
Posts: 513

Think of your needles as a water hose your HSN or Main needle is where you turn the water on and adjust how much water/fuel total your engine will receive. The LSN is the nozzle where you fine tune the output in that narrow range. So, to richen your engine overall. You want to richen the HSN or MAIN needle. Make sense?

+1 on the glow plug thats your dying problem I almost guarantee it.

Also if you don't season the piston, sleeve, case and rod. It may break them on the first few runs just because there will be sooo much pressure on them. There are several breakin procedures and some are quicker than others. Rather than skip it completely I would at least use one of the faster ones like Cyrul or heatcycle rather than just race tune it right off the bat. Hope that helps ya buddy.
AE RC8T, Futaba,A-Main by Massive Mods, Hitec,
JConcepts, Fastraxx Hobbies, Team Terribles,
Do-Over is offline   Reply With Quote
Old 08-25-2010, 06:46 AM   #4
Tech Regular
jeff_ellis_9's Avatar
Join Date: May 2010
Location: Grover, NC
Posts: 418
Trader Rating: 5 (100%+)

Engine may be toast. I had this exact same problem with my Nova engine. I had a good run-away at WOT just like you did. Read through my thread below, I tried changing to a hotter plug and completely cleaned motor and I couldn't ever get it to run. So I ditched it and got a new motor. I know mine if I would hold the igniter on it would run ok, sometimes it would even run good. But as soon as you remove the igniter it died immeditaly. I think I heard somewhere where the igniter keeps the plug hot, when really the engine supposed to, but due to the run-away (excessive heat) there is little to no compression.

Team Losi Buggy
GO Tech 5 port RB Mods
Spektrum DX3S
jeff_ellis_9 is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Speed Secrets (SS) RedEnzo Malaysian R/C Racers 197 09-21-2013 06:23 AM
MEGA (by Picco) thread ttso Onroad Nitro Engine Zone 1318 09-13-2010 05:56 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 01:01 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net