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STS Engines

Old 01-19-2007, 04:57 PM
  #26  
NITRO FUMES RULE
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Default RE: STS Engines


ORIGINAL: redfox03

i have a question. im planning on getting one of the sts .21 engines for my buggy. i plan on using 30% fuel for it. when i am breaking it in, should i just leave only the silver shim in since i will be breaking it in with 30% or leave them all in till the break in is done?

Hey redfox03 if you follow my instructions a couple posts up you should be
in good shape. Keep all shims in place till you reach 3/4 a gallon ect. Linkadrip
is correct in that the shims are in place to lower compression for break in. Hope this helps!

If you are not smelling nitro fumes and listening to the sweet song your not LIVING!!
Old 01-20-2007, 04:51 AM
  #27  
EG1
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Default RE: STS Engines

I had good luck with my STS 28's in my savage. I'm going to try out the D21T in my MBX5T, the sleeve is a work of art for a 180 engine:

Old 01-21-2007, 10:39 AM
  #28  
Losi8racer
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Default RE: STS Engines

you will like the T i'm going to put one in the 8ight-T whenever it comes out , i have been running the 8ight with the D21T , it easily hangs with the expensive italian mills at the track...i love the engine...very impressive so far at $180,-
Old 02-05-2007, 06:31 PM
  #29  
WildMan20
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Default RE: STS Engines

is the sts good for bashing and occasionall racing in a savage. I am putting in the 3 speed already have a steel spur and am going to be running stock size tires.
Old 02-05-2007, 07:38 PM
  #30  
MADDAWG1
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Default RE: STS Engines

here is the sts .28 in my turmoil

http://video.google.com/videoplay?do...53937801&hl=en
Old 02-13-2007, 10:18 PM
  #31  
corona672
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Default RE: STS Engines

how many head shims should i remove on my .28?? theres the 2 copper on (1 thin and 1 small), and a siver shim.. ... i am about 3/4 of a tank through.. give or take some and runing 25% nitro..

thanks..
Old 02-16-2007, 07:46 PM
  #32  
Norcaltruggy
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Default RE: STS Engines

I have 2 RB modded STS D21T's on order. I plan to run it with the STS pipe on my 8ight, I will report the performance as soon as they some in. So far, Mark at stsmicroengines.com has been great to deal with.
Old 02-18-2007, 02:23 PM
  #33  
BChiz
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Default RE: STS Engines

Old 02-18-2007, 02:31 PM
  #34  
BChiz
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Default RE: STS Engines

Hey Supertib, I think I sent you an email, I hope it went through. If you didn't get it, email me back at [email protected].
Old 07-17-2007, 01:45 PM
  #35  
RC_BEAST
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Default RE: STS Engines

i just got done breaking in my sts .28 engine. i think they are a great engine but i have problems with the temperature
Old 07-24-2007, 07:53 PM
  #36  
46u
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Default RE: STS Engines


ORIGINAL: RC_BEAST

i just got done breaking in my sts .28 engine. i think they are a great engine but i have problems with the temperature
What are the temps, what fuel are you running and how much fuel do you have through it?
Old 07-24-2007, 11:00 PM
  #37  
SAVAGEJIM
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Default RE: STS Engines


ORIGINAL: RC_BEAST

i just got done breaking in my sts .28 engine. i think they are a great engine but i have problems with the temperature
What are the temps? 300degrees F plus?

Have you RTV seald the engine? Replaced all fuel lines? Replaced the tank?

If attacking all the possible air leaks does not help, check your tuning. Also, use the correct plug for the nitro % you are using.

If all else fails, inspect your carb thoroughly. If the carb is faulty, call STS and ask them to replace it, STS sometimes lets a few bad carbs slip out since they have large machining tolerances when it comes to the carb.
Old 09-03-2007, 05:27 AM
  #38  
muggy breaker
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Default RE: STS Engines

how would you know if the carb is faulty or not
Old 09-03-2007, 06:43 AM
  #39  
SAVAGEJIM
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Default RE: STS Engines

I should also add check the head shims. Make sure you have ALL three there, a silver and 2 coppers.

Basically, when all the possible air leak problems have been addressed but the engine still runs away, their is another air leak that cannot be corrected no matter how much RTV you throw at the engine. Usually, it is the carb at fault. The LSN on STS big blocks is usually the culprit. If you did all the air leak remedies and you still have to richen the LSH to where it is almost falling out, it is for sure at fault.
Old 09-03-2007, 09:05 AM
  #40  
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Default RE: STS Engines

Imo, for the price STS is THE best brand of engine. For a $130 engine, no .28-.32 comes close in performance despite costing much more. And the .30 can still hang with the Nova .28's and such. Nothing but good experiences with mine, great product! I cant wait to remove the shims
Old 09-03-2007, 01:12 PM
  #41  
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Default RE: STS Engines

good to hear its treating you well!
Old 11-21-2007, 10:23 PM
  #42  
rcnitrodriver
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Default RE: STS Engines

Whats the life span on these motors after brake in?
Old 11-21-2007, 11:17 PM
  #43  
46u
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Default RE: STS Engines

This is a question with many variables in it. Much has to do with how you break it in, after run oil, keeping the air filter clean and ones tuning ability. I have a STS D21B in my buggy with well over 5 gallons still running strong. I have 4 other STS engines 2 are still new and my STS 3 port 28 has around 3 gallons on it still running fine. I have a STS D21T MKII I will be running next season.
Old 11-24-2007, 08:31 PM
  #44  
j_blaze
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Default RE: STS Engines

i used the drake method on the d21b and so far so good. took 6 tanks on the box 10 cold and 10 hot cycles and the MASSIVE pinch was gone. i had to heat it with the heat gun to get it to start! it still has mad crazy pinch but you can turn it over with the flywheel. i used another two rich tanks on the track. very impressive engine, i picked a good day too cause all the racers were there on a practice day. i gotta say the sts was no match for the modded rossi's and rb's, maybe with a little modding. temps were jumpy but never over 242, i had some fox gold series plugz that may not have been hot enough, engine quit a couple times.
Old 11-24-2007, 10:26 PM
  #45  
46u
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Default RE: STS Engines

I hope it works for you, as I know some that tired that type of break in and did not hold up well. I heat cycled my D21B and after 3 plus gallons I still had to loosen the glow plug when it was cold out side. I could not even turn the engine over by hand with the plug in, Keep in mind people like Adam Drake blow or wear out and engine they just grab another and stick it in. I do not have free engines so I like to make mine last as long as possible and like I said well over 5 gallons and my D21B still running strong.
Old 11-26-2007, 07:08 PM
  #46  
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Default RE: STS Engines

1/2 gallon after break in and she is starting to sing now, i cut some ports on the sleeve to get some flow in there and it was flying around the track, temps were about 240ish so far but could be richer bun nah, its good now. i fried a clutch spring along the way so had to pack up but i'll post more as i go. when i was working on the sleeve i noticed a mirror finish inside where the piston rides, none of my other engines looked like that, always a bit more gritty looking.
Old 11-26-2007, 08:48 PM
  #47  
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Default RE: STS Engines

Me too, after 1 and a half gallons my engine is IMMACULATE! A few spots of rust on the crank (really small) but everything else is like a mirror
Old 11-30-2007, 03:53 PM
  #48  
Redcat Nick
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Default RE: STS Engines

I need a tuned pipe for my sts 28. What do you recommend or only sts tuned pipes work. I have an XTM big block tuned pipe. will it work or do i need to get an sts tuned pipe.
Old 11-30-2007, 06:24 PM
  #49  
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Default RE: STS Engines

053 is not impressive, i plan to get a 007 or jp-1 to see how that goes.
Old 11-30-2007, 08:51 PM
  #50  
46u
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Default RE: STS Engines


ORIGINAL: Redcat Nick

I need a tuned pipe for my sts 28. What do you recommend or only sts tuned pipes work. I have an XTM big block tuned pipe. will it work or do i need to get an sts tuned pipe.
Try the pipe you have and see how you like it. I have the STS 3 port 28 in my Savage running the stock HPI polished pipe and it works well. On my D21B in my buggy I tried the STS 0403, which is for the 21, JP-1 and the stock pipe that came with my Hyper 8. For my driving I prefer stock Hyper 8 pipe. Next race season I will be running the STS D21T MKII in my buggy and will see which pipe I like best for it. If you get a STS pipe make sure you get the 0702, which is for the 28 and 30. The thing with pipes is a lot has to do with personal preference.

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