A Myth??

[REDSAVAGEMAN]

So i get this new Axial .28 right ? There is so much bottom end power, but whe I start to get to the 2nd gear shift point it boggs down. When i lean it out it performs great and shifts, but gets up to 300 degrees.

I hate tuning by temp b/c I spend more time tuning than driving. Do I:

A) Tune by temp and try to keep it around 240 degrees

B) Do it the old school way and just make sure it is running fine and producing a nice white smoke trail

I want to throw the thermostat out the window. Please advise

 

[Jeremy]

I think you will be fine if there is a good smoke trail at all times.

Could be some other things causing the higher temps...

1) .. Did you seal the engine .. and check for air leaks
2) .. Make sure you don't have a blown or leaky exhaust gasket
3) .. Make sure your head bolts are tight
4) .. run a medium to cold plug in the summer


Just a few things to consider w/ your mill and remember for the first gallon or so the mill WILL run hotter..

 

[4x4]

B) Do it the old school way and just make sure it is running fine and producing a nice white smoke trail

thats my opinion!if you can see smoke this means that oil is being burnt. this means the engine has spare oil and has good lubrication. some engines like to run hot.
4x4

 

[Crash]

red is it posssible its still not comletely broke in? Ihave my axial tuned to 225 and it can get as high as 270 but, you should get good performance at 225-250
give it a couple more tanks to break in more. just my opinion but, we are talkn about same motor. hey same climate too. your 12 miles from me. lol
good luck bud.

 

[Fx]

No worries I had the same problem with my Axial .28 check the threads I made. How much fuel do you have through it? After a gallon I retuned it and it's hard to get it over 230. Once you hit the gallon mark retune I did and it's fast and runs on average around 220.

 

[-SaVaGe X-]

i would make sure that the engine is performing at its best... no matter what the temps are.

 

[REDSAVAGEMAN]

THANKS EVERYONE - I just got this down in the 260's with a couple adjustments. I try to answer all the questions in this thread.......

I am running medium plug
I could use a new exhaust gasket
I have about 7 tanks through it now
no air leaks
bolts are tight.

I figured I would get batteries in my thermostat b/c this was a new engine, but if I remember correctly I did not start having fun with the .25 til I got rid of the thermostat.

Once again I appreciate the feedback. This site has been rediculously helpful and the guys in here are a wealth of knowledge.

This thing is running awesome now and I think I give my buddies revo a run for his money ! ( when that goofy revo runs ! - I swear that thing is worse than his ex !

thaNKS AGAIN FELLAS

 

[Crash]

anytime red,
lets bash these things up pm me if your out bashn.

If Chris Hansen (DATELINE) is moderating this site I am over the age of 18 and so is Redsavageman. LOL

 

[Savage89]

Mine runs around 260 and starts to go by its self after awhile i still cant seem to figure it out. My pipe acctually started melting my stock body a few days ago

 

[REDSAVAGEMAN]

yO CRASH......i AM ONLY 17 YRS OLD. shhhhhhh. Seriosly 12 miles away

Hey 89 Mine starts to idle a little higher too. Hope I can help. I noticed the same thing you are talkin' bout so I keep my idle just a tad low and start my sav with a little more throttle trim. You will prob keep the trim high for about a minute or two then turn it back. I know it sounds a little silly but it works and it is easy.

REDSAVAGEMAN 1978

 

[Savage89]

yO CRASH......i AM ONLY 17 YRS OLD. shhhhhhh. Seriosly 12 miles away

Hey 89 Mine starts to idle a little higher too. Hope I can help. I noticed the same thing you are talkin' bout so I keep my idle just a tad low and start my sav with a little more throttle trim. You will prob keep the trim high for about a minute or two then turn it back. I know it sounds a little silly but it works and it is easy.

REDSAVAGEMAN 1978

I acctually keep my Throttle Trim down all the way all the time and it stil does it

 

[Crash]

hey 89 what do you mean?

"starts to go by its self after awhile i still cant seem to figure it out'

is your idle raising at this temp?

red, I ran mine today and monitored the temp. seems to run around 224 to 260 under heavy bash n . it takes a while to warm up set as fat as you have too to keep it cool.

but, once its hot 225 it will run nice for me. at first its just a pig.
good luck men

 

[Savage89]

hey 89 what do you mean?

"starts to go by its self after awhile i still cant seem to figure it out'

is your idle raising at this temp?

red, I ran mine today and monitored the temp. seems to run around 224 to 260 under heavy bash n . it takes a while to warm up set as fat as you have too to keep it cool.

but, once its hot 225 it will run nice for me. at first its just a pig.
good luck men

I run for about 20 minutes or so i check my temp its usually around 260 which isnt bad but my idle starts to rise and its causing the truck to go by itself

 

[DOOBEEWHA]

red is it posssible its still not comletely broke in? Ihave my axial tuned to 225 and it can get as high as 270 but, you should get good performance at 225-250
give it a couple more tanks to break in more. just my opinion but, we are talkn about same motor. hey same climate too. your 12 miles from me. lol
good luck bud.

Yes!!! How many tanks red?
You got to break her in first way before any proformance tuning, bro.
If you haven't got at LEAST 7-10 tanks through it, richen up! and seat the piston.
What I mean by LEAST is that I would keep heat cycling the thing for 10 - 15 tanks before fine tuning the mill, Red.

If you want a long life out of the mill, try to get 30 or more heat cycles completed while placing the piston at BDC at each cool down.
This will save your "pinch" and temper the piston & sleeve as it seats.

Just my 2 cents.

 

[Savage89]

Could the plug I'm using be a problem i run a McCoy 9 which is a hot plug right? Is it a possibility that the motor might be running a little hot because of the plug which is causing it to rev higher and take off by itself???

 

[DOOBEEWHA]

Safer temps are below 250 and prefferably at 225.
Not knowing the Axial to say is what keeps me from being too conserned in telling my point.

I hope you guys know the factory reccommended temps.

Note: My k4.6 is out of a sleeve and piston from my temps getting to high but I kept it below 260.
I then found out that the k4.6 is a cooler running mill and likes to be at 210 - 225.

If you are running above these temps, make sure you have a rich needle setting to protect the mill.

Find out what your engines are designed to run at. Just 2 cents, guys

 

[Fx]

Okay, if you only have 7 tanks through it don't worry. Like I said the temps will drop around the 1 gallon mark. Re-tune at the gallon mark. I won't say it again.

 

[DOOBEEWHA]

This is a few comments from a post that crzy-svg-usr posted regarding fuel percentages. This one portion seems to ring true to my way of thinking.
Take a look......


Quote: crzy-svg-usr
I have run 20% to 40% to 30% in the same engine. Its on its 17th gallon now with a great deal of compression. All that is needed is a proper tune.
If you can't tune, Id say learn how to or use a trash engine till you do.

From my experiences, it seems that 30% is easier to tune too then 20% because it is running richer, but maintaining the same speed as you would
with a perfect tune on 20%.

If you are on the mark at the tuning though, you will have the temps hovering around 210-230, which is where I run my engines at. And they run like a dream.


Most 2 stroke engines can't idle for a long time, so don't expect it to.
If it idles for a long time without bogging down by itself your LSN is probably too lean and you should check that out.

I know for a fact that my RB loves a fat low speed needle with a lean high speed for optimal performance. Every engine is different, so you will have to figure
that out on your own.

For all of those who state "you can't switch fuels and % theorys", they are wrong.

crzy.

This post was edited for minor spelling and puncuation. ----Thanks crzy-svg-usr: Excellent post

 

[Savage89]

I guess cold plugs would help and I'm also almost through the first gallon on this motor so hopefully that should help too.

 

[DOOBEEWHA]

I guess cold plugs would help and I'm also almost through the first gallon on this motor so hopefully that should help too.

Have you tried Mc coy mc-8's, Savage89. FX made a good point about reaching the one gallon mark. hang in there and you will notice a change in temps. A broke in engine is alot easier to tune.

 

[Savage89]

Have you tried Mc coy mc-8's, Savage89. FX made a good point about reaching the one gallon mark. hang in there and you will notice a change in temps. A broke in engine is alot easier to tune.

Nope only the 9s but I'm almost to the gallon point so maybe ill start to have better luck

 

[DOOBEEWHA]

=========================================================================

Ok.The mc-8 is a cold-medium plug great for normal sunny days in the upper 70's to med 80's.

The mc-59 is a hotter plug, good for the cold starts. Because it's abit hotter plug, it keeps the
engine going on a cold start ups.
It does raise temps abit higher than normal, but if your keep'in the mill rich as you do in the
cycling/break-in, it should be alright.

After 10 tanks or so, you can switch back to the mc-8 plug to complete the break-in.

========================= Hope this helps, bro ================================