Originally posted by bbntc3
Nostrixoxide: Why use side exhaust engines? With the money you've dropped in the car I don't see any use for the lower hp side exhaust engines. Also just wondering did you add head shims to cut compression when you installed the blower? In gas car engines you usually want to cut compression when a turbo or blower is installed. If you did'nt change head clearance have you removed head and looked for dentonation signs yet?
Also what % nitro you using??
When I first purchased the NTC3+RTR I brought it home and started polishing, porting & just generally started making the car look alot nicer. I never even drove the car with the stock ae15x motor that came with the kit. I just decided to purchase the OS 18cv-rx motor because I knew I wanted more performance, but I wasn't positive where the car was going to end up in the fututre. So I figured the CV-RX motor would be a decent place to start because it didn't require me to replace the exhaust right off the bat. Since that point I started to become more power hungry & decided to order the OS18tz-tx motor & the MPPA supercharger. I guess you can say I'm alittle crazy. My friends thought I was nuts because I still haven't run a complete quart of fuel through the CV-RX motor & I already made up my mind to replace it for something with alittle more power. Now just to give you a better understanding of my thought process, picture this.
I have a 2.28hp OS motor waiting to be installed!!!
I've been in contact with a gentleman by the name of Danny Elliot (da-hellion) & he is going to send me the instructions on what is needed to install a big block into the chassis. From what he has told me it's very simple, I just need to drill a couple of holes for the big block engine mounts to bolt in!!!
I'm debating on purchasing a 3.5hp SH engine I seen that is selling for $169 bucks. Now call me crazy, but 3.5hp is alot more then 2.28hp & a sh_t load more the the 1.6hp engine thats in my car now. Plus I still have the supercharger to bolt onto what ever engine I decide to go with. I know that much power is pretty much going to be un-useable but I'm a lunitic I guess???
As for altering the head shim's on the CV-RX engine, I have left it stock. Stock it has 2 shims equaling .3mm (.1mm & .2mm shims) OS recommends removing the .1mm shim if your running low % nitro fuel & leaving it as is if you run 30% or higher. It has alot to do with the atmousphere also. I live about 2500ft above sea level so the air is pretty thin, nothing like living in Colorado though? I run Trinity (monster brew) fuel with 20% nitro & 16% lubricants. Remember the motor is still breaking in!!!
I have a quart of Trinity Platnium 30% in the garage that I want to try out, but I'm alittle worried because I was informed that it only has 6 or 8% lubricant in it. I really don't want to blow up the engine even though I do have spares. I just want it to last as long as possible. I have completely disassembled & hand polished all of the engines internals (inside of block, crankshaft, Con. rod, top of the piston) the only thing I did not do was any port work to the sleeve. I don't have enough knowledge in that field of the nitro RC engine to attempt that as of yet. But I did figure that the smoother I could make the engine components the better it would perform. I have had the head of several times & there are no indications that the engine is running improperly at this point. I will have to keep a close eye on it once I start leaning out the engine more. It seems to run best when I run it with either a HPI platnium/Iridium r-3 med plug or a McCoy MC-59. For some reason it doesn't get off the line as quick when i run it with a #8 OS plug???