thanks jase714 but i have cut the windows out more and its still there but i think i am going to try to figure it out

oh and TEAM-JCJ ill try to take the heat sink off and see what the piston looks like

Very good point there. I was telling people this about a month ago and didnt feel like starting it over. A very good testament to what you stated is that I used traxxas top fuel 20% for awhile because my lhs was out of the ODonnell. This is the stuff I use, the r2r 20% http://www2.towerhobbies.com/cgi-bin...?&I=LXMGF8&P=0 Anyway, the "top fuel" always caused my s-25s, savage and mt2, to run hot, around 280, and would often evaporate causing a lean mix. Then to get it to restart, I would have to set them very rich, and have to constantly retune the engines every other tank or so, until I ran into the evaporation again. To sum it up it was a nasty and annoying cycle. Kinda caused me to question my tuning ability. Finally switched back to the ODonnell, and the first time I retuned to adjust for the different fuel, ran about 7 tanks in a row without having to touch the carb again. Only quit due to lack of daylight, which is very satisfying compared to quiting due to frustration or overheating. By the way, switching back to good fuel, my temps never got over 240 in the big block. I know it wasn't some crazy coincidence that it turned out this way because I ran the remaining 2 tanks worth of top fuel I had and then switched fuel and retuned withing an hour of running. I would rather wait for the ODonnell to come back into stock before I go through all that again.

The RTR O’Donnell has higher oil content then the Race blend. I do not like it. RTR has around 15% oil content, Race has 12% and Pro has %10. Being O’Donnell does not list them I am going by what other manufactures list. The RTR could even have more oil. Mine does just fine on 12% oil. I do not like Traxxas at all!

I run sidewinder 20%-12% in all my trucks with no problems. My 18SS runs fine on it, When I said it was hot, I just meant it runs hotter than what I AM USED to. Plus my temp gun might be a little screwy too!!! I am starting to just say "forget temps" and tune according to sound and smoke.
When I raced it last night with the OS 18CVR in it, the highest temp was 247 and my Revo with the 18TM in it only hit 217 but they both ran very well and I probably should have been running the TM a little richer as it had a little too much power for my driving style and track we were at.
The unfortunate thing is that everyone has there ideas and thoughts regarding what temps are best for an engine....All these R/C companys are in California or Texas where there weather is totally different than other peoples...I have called Traxxas and HPI both and I always hear the same thing from them....The temps are a tuning GUIDE!!! and that is it, Traxxas actually told me to throw away my temp gun. LOL. Dont get me wrong though I certainly wouldnt want to see any engine reach 500 degrees or something like that, But if the engine is pulling good power, has lots of smoke and sounds the way a nitro engine should then it should be just fine.
Once again though, that is just my experience, I am sure some may agree and some may dissagree with it, But everyone has there own ideas and thoughts. What might work for me, may not work for someone else.

The temperature gun or what ever is just an aid. Yes you need to be aware of all the other things I agree but running to hot is bad and it will sure tell you this. I fell anything under 270 or 280 is OK. As stated above good airflow is important as well. There are many variables but knowing your temperatures is a good one as to hot and you will destroy an engine. The other things you said are important as well and I do not tune by temperature alone. Bottom line what ever works for you and you do not fry an engine.

AAAHHHH......im soo excited!!! i just bought the sick 18ss from the classifieds....CANT WAIT!!!! i got a killer deal too!!! [link=http://www.rcuniverse.com/market/item.cfm?itemId=189122]18ss[/link]
there it is!!! what do you guys think! ive own a savage and have had 2 rc10gt's(still have 1) and i cant wait for this!! my other trucks are gonna have to sit on the shelf for a while!

quick question can someone tell me what the slipper clucth does? also I'm going to post some pics later of my truck to see if someone can let me know how my mesh looks. Well I'll end post here since it looks like MT2 thread might have some probs. Let's see if works.....

Also does anyone have any ideas what could be slipping if it's not my front diff, which is the last thing I have to check. And for anyone running the .18 os engine does your clutch bell have any play in it. Everything is tight and my clutch bell can wiggle about .5 - 1mm front to back. Could it be the slipper clutch causing the car to not to go when gas is giving to it, it doesn'th happen all the time but if I stop on a slight hill and try to give it gas the car will sit still for a second before going, it doesn't happen everytime but there fefinately is something wrong, any ideas??

the slipper clutch is designed to slip when there is too much of a strain put on your drivetrain, i.e. if you are doing alot of jumping, limbing steep hills, or just straight out launching from a stop as hard as you can. This slips, so the stress put on the rest of the car doesnt cause you to blow out your diffs or strip the spur gear itself.

as for an idea what could be wrong, double check and make sure your clutch is in the right way, or that it isnt worn out. if its backwards it will slip instead of grip when there is a heavier load on your truck.

The slipper allows a little slipping in the drive train. So you do not break as much. It would be very hard to tell if the mesh is correct from a picture as a lot has to do with the feel and gear lash. If you hold the spur and rock the CB you want just a very little back and forwarded movement with out the spur turning. All so you do not want it so tight that there is any bind when turning the CB or the spur. I use the paper method and it has all ways worked well for my. As most know that this is even more critical on a Savage and I have never stripped one on it after about 2 gallons.

well my front diff is fine. I wonder what the slippage could be from. I'm wondering if it could have benn my front axles slidding off of the pin. I took my front tires off and the axles weren't seated too good , then again I could have done it myself when I was taking off wheels, oh well time to put this junk pile back together

All I have to say this truck is a very durable truck.. I was going WOT and somehow my throttle linkage got stuck because the failsafe did not help at all, and the truck bounced off this curb into a bunch of metal poles.. I bent the fins on the engine and broke 1 tierod.. Shock caps just poped off of 3 shocks and thats about it.. Fixed it in about 5-10 min and it's good to go..


I'd show you guys some pics but I couldn't find the camera and already fixed it now...

hey i was looking into the mt2 18ss and was wondering if i could get some feedback. it looks like the car would be a little sluggish, the chassis looks to big for the car. Its also one of the only 4wd stadium trucks out there and that is why i want it. just wondering if someone could help me decide.

Very good truck!

anyone have vids of it? i really want to see it in action

Not sure they have them but did you check on HPI web site? All so there is a thread on the form here that has videos but not sure if any are of the MT2 SS?

you could check google videos, they might have some vids of the mt 2 in action. oh yeah, very durable truck too. i TRIED to break something on this truck last month. i was hoping to break something major to see how tough it was. so i went to the golf course up the street. i hit one of the hills full throttle, the truck went about 5 feet in the air, spinning like a top and came down hard. hit a hill again, but the jump wasn't so good, but it came down really hard on the front right shock, thought for sure i bent it...... nothing. after an hour of bashing, i only lost a rear dogbone on the right wheel and cracked the little tray that holds the diff case down. this truck is a beast. it's now sitting on top of my entertainment stand next to the monster gt. i have the "dust cover" body on it now, aka the mx-1 hummer body painted red with black camo spots. looks too cool with the tsais badboy side pipe on it and the gold super star rims by hpi. can't forget the proline gladiators, i love the grib i get from those. can't wait to take it to savannah with me in august to hit the beach.

Hello, I would like to know if I change my engine in my Mt2 by one Os.18, I must changing my transmission with Dogbone and Heavy duty cup join?



Other question, what is the best engin beetwin Os.18 and Hpi 18ss?



Thanks for you answer

First which OS .18 the CV-R or the TZ? All so what have you done as far as upgrades? I am guessing you have the RTR MT2? The TZ is a MUCH more powerful engine then the CV. There are things I would recommend if you put either in if you have not done so far and a whole lot if you run the TZ. But it depends what upgrades you have done. I have never own the HPI .18SS engine but I have owned quite a few HPI and OS engines. OS is about as user-friendly engine as you can get. I have heard that the HPI .18ss runs on the hot side but do not know for fact. Here in the states we can get the OS cheaper then the HPI. All and all I have had good luck with both OS and HPI engines.

I am getting ready to drop an OS .18 TZ in my HPI MT 1 ¾. I now have an OS .15 CV-RX in it which they made before they started making the OS. 18 CV-R.

i was just wanted to know what spur gear gear some of you guys are running and how you like it. I'm thinking of changing mine but i just wanted to see what everyone else has first. Anything would be good

the 18ss does run on the hot side i have one. I'm still trying to figure out how i can keep it cooler than what it is running now but other than that it runs great

Are you talking about how many teeth or if we are running a plastic or alloy? Please do not take this wrong but when people ask questions to much information is better then not enough.

ya how many teeth

What brand and blend of fuel are you running?

im running the blue thunder 20% nitro and 12% oil. Why