:lol: Sounds like your on your way to becoming quite the expert. :lol:

i was just gonna say that if you look on every other page of this thread ...you would see that everyone has recomendations on glow plugs for the grp ...to not even be able to read back a few pages on this thread to find an answer is lazy ...and maybe even read the whole thread if you really wanna see all the things peole have said about the motor ....and trust me i have done my fair share of helping people who cant help them selfs on this thread and several others ...so please dont make posts to put me in a negative light ...as most will tell you on here ..that i am very helpfull including the people who pm and i call them on the phone and take hours of my own time to help them get things fixed ....

its a shame you werent man enough to leave your original post up here ...if rctech hadnt of been down this morning i would have been able to quote your original post before you edited it ....if you have a problem with me pm me and we can hash it out on the phone ....sad i had to make this post because you think i didnt want to help dude decide which glow plugs to use ....soapbox restored tothe locked and cocked position :nod::nod::tire::tire::tire:

actually this is exactly the reason i edited. i didnt want to start something. if u want i will retype what i wrote so people can see. it wasnt that im not man enough. i was being the BIGGER man and edited it that way there was nothing to fight over. i edited it 2 min after i posted it. i dont have a problem with u, just posted what was on my mine.

i understand and theres no hard feelings ...just want you and everyone else to know that ...i would help someone i dont even know do anything they needed to do on an rc car ...i mean you did something for no reason and decided to retract it ....and i might add to the way wrong person ....just saying these threads are here to help people unfortunately ...people are lazy ......im just sayin ....look around see whats up...you will be suprised what you will find ....and beyond that he might not of even known the feature was there to search the forums ....either way its over ...move on ...i will ..and if you ever need any help dont be affraid to ask ....i might be of some help ......:nod::nod::nod:....and glad you maybe figured out your grp ...ive been saying all along if these motors run in the 220-230 range something is wrong ...but hey thats my opinion ...everybodies got one ...later

agreed, now lets go get a beer ha ha

im buyin:lol:

Dont run this engine hot. Runs at its best like said above at around 180 or so. At motorama after my 20 minute main mine came off at 160 it was a little fat up top but still had plenty of power.

:lol: funny read. :nod:

X2 :nod:

Can anyone tell me if GRP plugs are the best to use in my Tuned .21 buggy engine, I can get OS or Nova plugs from the LHS.

I just got a tunes .21 and everyone I race with use the GRP plugs .

Cheers Bungy!!!

no thats funny

yes you can run any plugs you want to as long as they seal up good and dont spit fuel out from around the glowplug :nod::nod::nod::nod::nod::nod:

i have found the grp plugs very good and extremly reliable :nod: i bought the 5 pack grp plugs and have not even used them yet i am still on the original plug raced the nationals with it and also ran the same plug to break the engine in and still is going strong i didnt replace it for the nationals as i was worried it may chenge the tune as it was a new plug but while there working why replace them :)

I'm having a problem tuning the top end of the GRP Tuned. The thing takes off like a rocket, but it gets to what feels like mid range and never pulls out the high end. I tried adjusting the HSN but the temps seems to get too high, over 230. Any suggestions?

Try taking the motor back to factory needle settings
HSN=3.5 turns out from bottom
LSN=6.25 turns out from bottom
IDLE SCREW= 1-1.5 mm depending on where the lsn is set
Leave the top end alone and lean the lsn small hour turns at a time till you have good smoke and good punch off the bottom. If you need a little more on top just lean the hsn a small turn or 2. Keep in mind if you tune it and run up and down the street 2 times you haven't given the motor a chance to balance out. Meaning before you decide you need to crack the screws anymore give it a chance to catch up 10-15 laps on the track or 20 passes up and down the street. Its really easy to get these motors to lean because it takes a minute for the needle turn to really grab hold. Other than that check the usual suspects. Fuel tank filter fuel line carb boot and o-rings on the carb.

this is exactly what was happening with me, i went to a p4 and solve all my problems, idk if this will help u tho

Well I switched to a P3, I usually run a P7, but I was having a problem starting it. I'm taking it to the track tomorrow, so I'll set it back to factory and try ya'll suggestion. I usually ran it for like 5 mins per adjustment, guess I'll go longer. :weird:

Drake told me the P3 plug is too hot and to use the P4 instead.

+1 all I run:nod:

well definitely 5 minutes is long enough for sure ....was just saying alot of people i see at track ...crank it idle it for a minute gun it to the moon a few times and they are ready to start leanin er out ....really you cant tune a nitro motor proper unless the chassis and clutch are heat soaked ....it just causes you to lean a motor up to much ...then when your in your race it starts running funny ....:)

most people run hot plugs because they idle better and the tuning window is larger ..when in all reality a colder or medium plug will give better perfomance ...they just dont idle as good and the window on the tune is smaller ....i just run plugs to the ambient temp ...if its 100 degrees i will run a cold plug ...if its 30 degrees i might run a hot plug ....mostly im running medium plugs though ...but yeh i agree with ya on that if i was running os plugs i would run a p4-p6

Hey guys Ive been braking in my tuned .21 today. This is the first high end engine I have broke in and tuned. I managed to idle 3 tanks through on the work bench. And man I understand what a tight pinch means now. I used the heat gun quite a bit. I tell ya though it took forever to burn up a tank, like 30 plus minutes. After the bench I took it to the street for 2 tanks doing fairly slow passes and leaning the hsn just a couple hours or so. These tanks took like 30 min to burn up too. I read on the threads that these go anywhere from 10 to 12 a tank. Is this just how the breakin is because your not on the throttle consistantly? I just thought it was a big difference from 10 to 12 minutes. My temps were around 160 to 180ish.

as long as you have good smoke you are fine ...tyr not leaning the hsn as much as you would with like an os motor ....you may end up to lean on top inhmo ...i really didnt lean the top to much ...maybe a little on break in ...leaned more on the low speed needle on break in ...but either needle dont lean to much ...are you using foil or a sock on the head? it helps keep temps in and needle settings still rich for break in ....on the long run times ...you aer getting good traction cuz your on the street ...plus your hopefully just blip blip bliping it around ...so i can see that mine were the same way ....just dont get it to lean on the top .....after its got about a 1500cc of fuel on it ...take it back to stock settings on the needles and re-tune it with out the head covered ....:nod:

Thanks for the tips Zixxer. Ya I am just blippin it around and I did not use a cover. Never heard of that....Its just kinda hard to keep patient while breaking these things in, but well worth it in the long run I'm sure. Thanks again

Hey guys awesome thread with a ton of info.

Question: is the tuned .28 overkill in a truggy. Should I order a second .21 instead.

Everyone around me keeps pushing me to go with the jk's in both.

Also pipe question: everyone says that the grp pipes get better mileage but at the price for a dynamite, ofna or other brand 53 are half the price?

Any one better than the other..

Thanks guys

.28 to much ////my extech .24 is just about to much ...go with the .21
on the pipe i have now tried both 2053 grp and dyn 053 ...the 053 gives more power and the 2053 gives better milage ..i got with the smooth gas mileage every time ...the 2053 is better for me :tire:

Is it common for these motors to run hotter then 170 to 190 range during the first gallon? i did the heat cycle break in and when i start to tune for race settings it runs great but temps are in the 212 to 220 range i have about 3/4 of a gallon on it with byrons 20% race 12% oil it has good smoke just curious if temps will start to drop after a gallon or so. i reallly dont want to hurt this motor i love it so far

Tune to smoke and performance every time will always yield the best results. I have broke in 2 GRP's recently, both are under a gallon and they both run at 210 - 225 when they come off the track even after a 30 min main. People say it isn't ok for these engines to run above 200, i disagree. My last GRP ran at the same 200 - 220 and was going strong after 7 gal. I tune to temp and performance and it has never failed me yet. 2 of the same engine will tune differently and temp differently, as long as these engines dont get excessively hot, and you will know because they will have a lean bog or a lean idle, then you are ok. Smoke and performance every time if some guy at the track says thats too hot just nod and smile. Everyone has an opinion and this is mine.

frank are you running the standard or tuned ..couldnt remember ...only reason i ask is because the standard will run a little hotter than the tuned ...when tuned ....that was a mouthfull :lol:

any one have a used or new piston for the GRP .21 they want to sell? if so i want to buy it!! i need it desperatly..i dont want a broken or scorn one..maybe one out of a slightly worn out set if its used

What brand plugs are we talking about? Was looking on amain to see, are these the OS brand? If so the p4 was the super hot . So wouldnt that be hotter than the p3. Thanks guys for aswering all of the rookies questions.

Alright I went back and looked again, and the p3 is the ultra hot and the p4 is super hot, so I pretty sure we're talking about os brand so the p3 is a hotter plug.

steve what is the tempratures where you are running ...if its 80-90 you would want a med-cold plug if its more like 50-70 you may want a medium plug ....the p-3 is the hottest plug os makes ....ultra hot .....most people run a hotter plug because of start up and idle ...when in reality you should run a plug based on what the tempratur is outside ....inmho .....not to mention a hotter plug has a thinner wire which in turn breaks easier than a med-cold plug ...so there is some trade off ...

Lately its been around 70 but I would say in the few weeks we'll be running in the 80's and then end of may to june 90 to 100 plus. So would the p3 work better in the 70 degree weather and then the p4 when it gets hotter out side? BTW I finally got the 2.0 in the dirt today with about 7 tanks on the grp and coming from a mach 427....whooo what a difference! I'm gonna have to learn a new driving style cause with the mach I was able to run it wide open on a lot of the track. love the GRP:nod:

I run P3's all day long no matter what the temp seems to work fine for me. Idles great and very few flame outs I use to run a P7 plug and had more flame outs. The P3 works great. I did not like the GRP plugs way expensive and didn't seem to last as long for me. You know the old saying, if it ain't broke don't fix it.

frank did you see my question up there for ya ...:lol:quess not ....how is the powershouse grp running ?:tire:

your probably going in the right direction ...i think alot of people run p4"s ? or at least ive seen that on this thread ...personally i run odonells plugs 97t-99t ...havent even considered the 77t 's ive got ...just to hot for my climate ....but you should be carefull about swapping brands on the grp as alot of people have not had good luck ....i will definitely agree that the grp plugs suck ass ...everyone ive seen thats come in a brand new motor has been bad ....i got a .21 sport promo kit from rcdeal.com just for a back up to the back up ...got it for 215$+shipping ...not to bad ..they had the .21 tuned promo for 270$ but im sure there all gone by now :( i would have bought a few of them had i had the money .....

270 for a .21 promo kit....Thats seems like a sweet deal... during break in on mine, half way through idling my tanks through on the work bench it wouldnt start up anymore. The grp plug was blown. I put in a new plug and it fired right right up. I thought it was something I did. Its funny how everyone has different preferences on plugs. A guy at my local track that has ran several Grp's swears by the Grp plug.

I'm liking the Tuned GRP so far. I'm noticing the engine is starting to run cooler as it breaks in. Have other people had the same experience? I'm right at the 1 gallon mark still using the plug that came with the engine. So far so good.

I do have to wait a full four minutes for the engine temps to come up. I've been driving about half speed on the track waiting for the engine temp. Then come in to refuel and drive the hell out of it. Slightly soft on the bottom end for my taste. I plan on going next step up on clutch springs, or even trying a low-mid pipe. I have been using the Dynamite 053 MR pipe.

Comfortable run times have been to pit as soon as the stopwatch passes 9 minutes. Then come in for fuel. This is with this soft bottom end. I'm about as close as possible on the needle setting for the LSN. The engine will get unhappy if it's leaned out more on the LSN.

Happy so far with a bit more testing to do.

let us know how the bottom end pipe works i feel the bottom to be a bit soft myself although im running an 086 pipe and thought about the 053