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Stuff to do BEFORE breaking in?

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chrisexv6

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Traxxas was nice enough to replace the piston and sleeve in my engine (that was wiped out before even 1 gallon!!), and now I have the engine back.

But before I start breaking it in again, I have a question: are there any recommended things to do before even starting it? I know the DVD and manual dont say so, but wouldnt it stand to reason that you would want to put at least SOME form of oil in the engine before cranking it over for the first time?

Thats the only thing I can think of that might need to be done before the first crank. Anything else that anyone may think of would be appreciated.

Thanks!!!
-Chris
 
You can take the engine apart, piston, sleeve, con rod and lube it up with after run oil. Then check to make sure the carb is set at factory. Then do your normal break in
 
u dont really have to do anything. just look at the engine and make sure that everything spins and all of that kind of stuff.

bryan
 
Originally posted by kwong2001
You can take the engine apart, piston, sleeve, con rod and lube it up with after run oil.
Click to expand...

BAD ADVISE

Follow the book!

kwong, If you keep giving info like this I'm going to fly out and bitch slap you and get back on the plain without saying a word.
 
Last edited:
lol, i thought it wasn't too good to do that but i didnt say anything.

bryan
 
Originally posted by kwong2001
You can take the engine apart, piston, sleeve, con rod and lube it up with after run oil. Then check to make sure the carb is set at factory. Then do your normal break in
Click to expand...

Kwong spends $488.62 on an oil change for his Toyota.
 
Originally posted by FastEddy


BAD ADVISE

Follow the book!

kwong, If you keep giving info like this I'm going to fly out and bitch slap you and get back on the plain without saying a word.
Click to expand...

Well poop, how is it bad advise? It won't hurt anything.

Originally posted by wdavidhicks


Kwong spends $488.62 on an oil change for his Toyota.
Click to expand...

$25.99 at grease monkey thank you very much
 
Oh good! I get to use this again!

Dammit Kwong...

The guy just got his engine back from the factory! Don't you suppose they would have assembled it with a certain modicum of care and attention? If someone is not comfortable or familiar with tearing apart engines they can certainly do it some damage.
 
Originally posted by wdavidhicks
Oh good! I get to use this again!

Dammit Kwong...

The guy just got his engine back from the factory! Don't you suppose they would have assembled it with a certain modicum of care and attention? If someone is not comfortable or familiar with tearing apart engines they can certainly do it some damage.
Click to expand...

Oh okay, I thought you guys were acting like it's just horrible advise for anyone.

Now, I revise my previous statement. Pull the glow plug off and drop a few drops of after-run oil then turn the crank

There, you happy, lol
 
Eddy might have had other objections but that was my take on it.

Now that we've taken a big
crap.gif
all over Chris's thread...

Chris, I'd do a by-the-book break-in all over again. I have a 2.5 engine that ran pretty well, but was a bitch to start after it got warm. I suspect I have some compression loss but a new engine's going in anyway. I've disassembled the engine and will most likely pick up a sleeve, piston and conrod for it in the future.

Bottom line, it seems that some of these 2.5 engines have a propensity for overheating and compression loss. I'll hope that Traxxas fixed you up nicely.

oh yeah... this guy has written an excellent tutorial on the T-Maxx 2.5 starting and tuning.

http://www.traxxas.com/support/pub/pdf/trx_tuning25.pdf
 
Originally posted by wdavidhicks
Now that we've taken a big
crap.gif
all over Chris's thread...
Click to expand...

I guess I don't understand.
Why would someone want to take a chocolate covered pretzel on a thread? :shrug:
 
LOL looks like it. Hey wdavidhicks you must like chocolate covered pretzels huh?
 
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Thanks for the advice guys!!! I havent been here long enough to say that I thought tearing down a fully rebuilt engine before breaking it in again was a little much so I let you guys do it for me. :)

Anyway, I added a couple drops of ARO last night and moved the crank a little (it WILL get stuck at TDC, I accidentally moved it that high while putting everything back on, had to whip out ye olde hair dryer to get it back).

Hopefully this weekend Ill start to break it in again. The next time I have an issue with this engine, though, either a Sirio or Fantom are gonna end up on my truck. I'm sure the 2.5 is a great engine, but I've already had two broken carb bodies and one engine that lost compression after almost 1 gallon. Not instilling confidence in me.

Other option is to try a different carb, but at 70 bux for the O.S. replacement, Ill save some more pennies and get a whole new engine. Man this hobby is gonna get expensive :)

-Chris
 
Originally posted by kwong2001
You can take the engine apart, piston, sleeve, con rod and lube it up with after run oil. Then check to make sure the carb is set at factory. Then do your normal break in
Click to expand...
You can get nearly identical results from putting a few drops into the cylinder through the glow plug hole and a drop in through the carb hole. Then crank it without the glow plug in and she's lubed.

Back to the initial question, no you don't need to add anything aside from fuelk before you crank it over.
 

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