I like o'donnell plugs.

See bottom left hand side of manual for running temp vs air temp.

http://www.stsrc.com.tw/download/21%...ual%20v3.1.pdf

Operating Temperatures:

15C-25C = 100C
59F-77F = 212F
-
25C-35C = 120C
77F-95C = 248F
-
35C+ = 140C
95F+ = 284F

my place at Sabah East Malaysia, GMT+8, Tropical Island... ppl been saying im running my engine hot as in 130-140C ... in fact thats the normal, racing temp and it performs well. anything lower, will only hinder the performance.
Thats why, ppl not using STS engine always says the engine is not good.actually they dont know whats the right operating temp. I salute STS. Well done.

dead thread.
lets keep it going.

Who's running the sts .28 on a 1/8 scale buggy??? I just took it out of my savage and dropped it on my inferno 7.5 we'll see how it handles tomorrow at the track.

I have it on my TTR-S3, not tuned yet, I still need to lean it, a lot of tourque, but top-end.... I need a top end pipe

ozpall... this is dino's. i think on page 3 or something.
Dino: im bored, so i just answer this on yer behalf. hope u dont mind.

cool, i'll post updates on my after i get back from the track. what cb are you running? is 14 too small? man mine is going to pop whelies.

just make sure it fit your engine mount, else you have to grind the mount a little like I did with my OLD MBX-5

as suggested by dino... get this one piece mount from ofna.

I've been running this motor for about 2 gallons now. I am very impressed with it so far.

I'm with jfc_tech on the motor temp issue. I've been running mine at the average temp of 110C and it's not where as quick as my friend's who is running his at about 140C...man that thing screamed!!!

I am thinking about switching to the STS green head .21 once I am done with this .28. My CRT is gonna flyyyyyyyyyyy.

a couple of our sponsored racer run the .21T motor in thier crt's . They do very well and you get lots better run time.

i wish i have the CRT to test it. no lhs selling it.

i seldom race my engine using temp gauge to tune it. i ever gone 145C(my pitboy said so...without my knowledge) on my savage. that was like 38-40C outside temp..damn one hot final. managed to stay the whole 4omins race.end up 3rd

i have one of the carb inserts in my 28 thats in my jammin, at my local track, it runs about 200 degrees, and i get about 8 min to a tank, and im one of the fastest guys on the track, cant wait to take it to a big track and open her up all the way, i have over a gal through mine and it starts and runs great

thats amazing 8 min at 200 degrees with a carb restrictor????

hmm...i think thats on the lean side. if u're talking in Celcius.