TT Pro .28 settings

[1800bigk]

Hello, My buddy gave me a Thunder tiger .28 pro engine that came with his RC8T. Anyway I put the TT .28 in my old savage to replace the tired
.21bb. However, I cannot get this thing to run right. I have broken it in and tried everything I know. I have returned needles to factory and tried from there but still nothing. I was wondering if anybody out there has used this engine and if so can you tell me your needle settings. I understand they will be different, I just need to get in the ballpark.

It idles good and starts easy but falls flat and stalls under load. I tried leaning out small steps at a time just like I've done with countless engines before but this one is not cooperating.

 

[whipnet]

How old is that engine? How's the seal?

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[Larsenracing]

Try 3/4's of a turn Lean (Counter clockwise) on LSN and 1 turn on HSN needles. See if this helps.

 

[1800bigk]

Its new seals are good. I've checked my fuel tubing thinking there was a kinky or something but its all fine.

Here's what it does in more detail. Fires up fine, it needs the igniter left on for bout 15 secs just to get warmed up. I can tell its rich because fuel is spitting out pipe. If I leave the wheels off the ground I can give it gas and it seems fine but under load it dies. So I lean out just a bit then it acts like it is too lean and starts acting up. So I go back and it runs fine with no load.

 

[BIGDAN89]

Clutch hanging up? What pipe u using ? Try needels flush

 

[bin_dubai]

check if ur tank is sealed properly
also check of ur headers is seating well

🙂

 

[madmax22]

i think the needle settings are flush for it. mine runs good with the HSN a little lean and the LSN rich.

 

[Keithv]

I have a TT .28 and I have the same problem with it. I think its the carb. Its almost impossible to tune. I picked up a different carb pretty cheap that I'm going to try one of these days and see if it helps. I spent so much time trying to tune that engine it drove me nuts. When I did finally get it running somewhat decent the temps were always up around 300. Anything lower then that and the engine ran terrible. I finally pulled it out and put an LRP in the truggy. The only suggestion I can give you is pull both needles and put some petroleum jelly or green slime on them and see if that helps at all. I thought I noticed a little improvement when I did it but like I said I got fed up and just took it out.
Good luck

 

[Cummins Driver]

make sure the air filter is clean and the elements are installed correctly. I know it sounds dumb, but my cousins .25 savage had been running fine, then all of a sudden had no power. If i leaned it and picked it up we could get it to accelerate decent, but then it would have real bad lean run on down low. I pulled the air filter off, and found one of the elements was folded together and pushed down almost into the carb throat and apparently it was restricting flow. As soon as i fixed that, it ran perfect, and i had to richen it back up.

Anyways, just another idea. I figure if the filter is real dirty it could do the same thing.

 

[whipnet]

make sure the air filter is clean and the elements are installed correctly. I know it sounds dumb, but my cousins .25 savage had been running fine, then all of a sudden had no power. If i leaned it and picked it up we could get it to accelerate decent, but then it would have real bad lean run on down low. I pulled the air filter off, and found one of the elements was folded together and pushed down almost into the carb throat and apparently it was restricting flow. As soon as i fixed that, it ran perfect, and i had to richen it back up.

Anyways, just another idea. I figure if the filter is real dirty it could do the same thing.

Good point man. I take my filter off when trouble-shooting.

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