Ziggy122 Posted May 8, 2006 Share Posted May 8, 2006 (edited) Hey Can nitro engines do incomplete combustion?? or does that make it stall?? I mean, underneath my piston there was tones of carb stuck there Easily 1 - 2g of the stuff And could this contribute to engines running hot?? If so, what can you do to clear the engine of this?? Ziggy (Sorry just realised that i wasnt in Nitro general) Edited May 8, 2006 by Ziggy122 Quote Link to comment Share on other sites More sharing options...
bmw nut Posted May 8, 2006 Share Posted May 8, 2006 did you mean carbon? if so there shouldnt be any under the piston,you sure its not dirt caked and cooked on with nitro oil? Quote Link to comment Share on other sites More sharing options...
300ZXZ31 Posted May 8, 2006 Share Posted May 8, 2006 Jees you really need to sort out your tuning, engines should be sparkly clean...possible some scorch marks on the piston head but nothing else Quote Link to comment Share on other sites More sharing options...
sea118 Posted May 8, 2006 Share Posted May 8, 2006 his engine is now dead and he is rebuilding it a bit pricey too i aggree with both the above, should be squeaky clean although that doesnt answer the question, as you told me ziggy i think it is a bi product/waste product of alkenes/alkanes so maybe there is the answer, it is possible for incomplete combustion as it will just be running rich and squirting unburnt fuel on the floor out of the exhaust like when running engines in on factory settings Quote Link to comment Share on other sites More sharing options...
yoclick Posted May 9, 2006 Share Posted May 9, 2006 engines should be sparkly clean...possible some scorch marks on the piston head but nothing else Not always, i had a mach .26 and it looked like this: And i think we can all agree that looks like a waste! However i posted this picture up on LSTCentral and asked one of the guys. "MAXXED" guy who does know his stuff quite well came back and said this: yo, Don't worry, that's pretty normal. The Taiwan motors use a lower grade alloy that rusts easily. The Mach falls in that category. My OFNA Hyper .21 looked worse than that after a gallon. The Italian motors use a higher grade alloy that is very resistant to rusting and corrosion. My RB C4 has no rust on the crank after years of having it. However, I would use after run oil to neutralize the acids from the nitro and keep moisture from building up in the crankcase during storage. So anyways i listened to him, dropped some after run oil while rebuilding the whole thing, and it popped into life in around 2 pulls of the pullstart (only took apart to replace from rotostart to pullstart). Also ran very strong for another 20-30 tanks before i sold it. However ziggy, just get a new engine! The one which your trying to fix sounds completly stuffed. Place all the bits into a bag and shove it into your toolbox and foget bought it Quote Link to comment Share on other sites More sharing options...
Ziggy122 Posted May 9, 2006 Author Share Posted May 9, 2006 his engine is now dead and he is rebuilding it a bit pricey too i aggree with both the above, should be squeaky clean although that doesnt answer the question, as you told me ziggy i think it is a bi product/waste product of alkenes/alkanes so maybe there is the answer, it is possible for incomplete combustion as it will just be running rich and squirting unburnt fuel on the floor out of the exhaust like when running engines in on factory settings Facotry settings... lol there a pain, the car hardly runs, just stalls But it could be just oil or sumet underneath, it just look gunky and powdery So far engines all in pieces But parts are on there way :D Ziggy Quote Link to comment Share on other sites More sharing options...
mentalpatient Posted May 9, 2006 Share Posted May 9, 2006 Facotry settings... lol there a pain, the car hardly runs, just stalls on my rush, it was the servo horns on the throttle servo, still don't know how to fix it. does it accelerate away after you apply the brakes and let it idle?? Quote Link to comment Share on other sites More sharing options...
dazzi220 Posted May 9, 2006 Share Posted May 9, 2006 yes that rusting is tru I had a TT engine that rusted before i even started it for the first - motobike used to hydrolock and flood Quote Link to comment Share on other sites More sharing options...
Ziggy122 Posted May 9, 2006 Author Share Posted May 9, 2006 on my rush, it was the servo horns on the throttle servo, still don't know how to fix it. does it accelerate away after you apply the brakes and let it idle?? Yes it DID Was continually pushing the acc horn to make rev's drop again I found that either ur servo horns were too tight or they aren't gripping properly (worn basically) I found replacing them made a HUGE difference It stops that little fumberling problem I used the same return spring on my old horns on the new set Ignore people with the throttle mod, the return is just been an [CENSORED], just take it off and play with it to weaken it a tad Infact i got a vid of the servo's working properly CLICKY!!! it goes brake brake acc acc brake brake acc acc The throttle shouldnt move at all when braking or idling hope this helps Ziggy Quote Link to comment Share on other sites More sharing options...
Ziggy122 Posted May 9, 2006 Author Share Posted May 9, 2006 Nooo my crank + Crank case looks Nothing like that Its still shiny! Pretty much like new! Here is my piston Sorry even with a light shining into it, u cant see the bottom cause of the stuff inside of it The piston is pretty clean still, just scorced top from the glowplug and under of course Inside liner is still clear but / \ shape And the outside of it has gone rather goldy coloured like the exhaust (got hot several times) Ziggy Quote Link to comment Share on other sites More sharing options...
300ZXZ31 Posted May 9, 2006 Share Posted May 9, 2006 No the throttle mod isnt compete crap, trust me when you have actually been in the hobby more then five mins, THEN i think you can start to tell people whats good and whats not. The stock linkages suck FACT Quote Link to comment Share on other sites More sharing options...
Thunderwolf Posted May 9, 2006 Share Posted May 9, 2006 he did buy the throttle mod, but sold it to me and it makes a big difference to bort breaking and throttle response Quote Link to comment Share on other sites More sharing options...
revo2.5 and loving it Posted May 9, 2006 Share Posted May 9, 2006 No the throttle mod isnt compete crap, trust me when you have actually been in the hobby more then five mins, THEN i think you can start to tell people whats good and whats not. The stock linkages suck FACT Amen lol Quote Link to comment Share on other sites More sharing options...
Ziggy122 Posted May 9, 2006 Author Share Posted May 9, 2006 why spend £11 on sumet, that can be solved by "playing" with the return spring to slacken it up The stock linkage is perfectly fine, just gotta have a great amount of time As u say by the vid i posted earlier, they worked fine, untill i tightened up the screw too much and basically ate the horns its a case of opions, wat u say may work / not and wat i say may /not work Quote Link to comment Share on other sites More sharing options...
Euan Posted May 9, 2006 Share Posted May 9, 2006 No the throttle mod isnt compete crap, trust me when you have actually been in the hobby more then five mins, THEN i think you can start to tell people whats good and whats not. The stock linkages suck FACT Hounestly Pal....what is your problem? It seems that every post that you reply to has a sarcastic tone. I am not wanting this to degenerate down to a slanging match but your tone in EVERY post is awfull. Quote Link to comment Share on other sites More sharing options...
300ZXZ31 Posted May 10, 2006 Share Posted May 10, 2006 Well maybe you do find me an [CENSORED] but really mate, this is just a forum, Im really not gonna let it bother me. Quote Link to comment Share on other sites More sharing options...
300ZXZ31 Posted May 10, 2006 Share Posted May 10, 2006 I think also you will find that none of the "older" members have a problem with me its just "cirtain" newer members get on my nerves, not you though so all is good. But lets not turn this into a slagging match. Quote Link to comment Share on other sites More sharing options...
Ziggy122 Posted May 10, 2006 Author Share Posted May 10, 2006 lets not Ziggy Quote Link to comment Share on other sites More sharing options...
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