hi bill,i have a v-spec with almost six gallons on it had sleeve pinched replace con rod, motor stil has a low end bog,the motor might be too far gone,any insight would help.

Have check the seals and bearings?

my front bearing does leak/or seep fuel ,the crank pin has slop too even after replacing the con rod,the motor may be too expensive to fix compared to buying a new one,just thought i'd get some more experienced insight,on possibly a cheaper fix,thanks for the reply.

You'll need to check the piston/liner fit. After six gallons' worth of fuel, it's likely that the piston/liner fit is about worn out. That's a lot of running for an R/C car engine. When the piston/liner fit wears out, the idle and acceleration are the first to go.

hey bill,just broke in a new eb modded v-spec with 30% should i make sure it has the second 0.1 shim between the head and is the
p3 plug ok to use,thanks

If you are getting detonation, then you should lower the compression by adding a cylinder head gasket. Using a colder plug would also be something to try if you're getting detonation.

Hi, is it true that the vspec is hard to tune or runs bad with glowplugs other than p3?? I have P7s And Im in the break-in process with a p3 now..

The V-spec is no harder to tune than any other engine. The glow plug needed depends upon how it's running.

what is the average Vspec temp? I know it can be variable, but considering running in summer weather / dry conditions...?

It's not possible for us to give you an actual temperature or temperature range for your engine. The specific temperature is determined by too many factors. There is only one way to determine at what temperature your engine should be run. You have to run it first and then find out what temperature the engine reaches.

Make sure your engine is operating properly with the performance you expect. Use the exact setup every time...fuel, exhaust system, plug, measurement location, and so forth. If you change anything, the temperature will change. Once you have the engine running the way you want it. Take your measurement. This is your starting point. You will have to take measurements over time to find out how the weather affects it. As the air temperature and humidity change from day-to-day, the operating temperature will change. Eventually, you'll find a temperature range that you can work with.

Engine temperature is not an absolute number for setting your engine. It is only a guide, and can help alert you to potential problems. The only sure way to make sure your engine is running correctly is to see how it's running. An engine can be operating at "correct" temperatures, but not running well.

Finally, use any temperatures you read about, or people tell you, as rough information. The only useful numbers are the ones you actually measure when your engine is running correctly. If your engine is running correctly, then what you measure is correct, even if some else says it's too high or too low. Don't worry about the differences. Each engine is in a unique installation with a unique set of circumstances, so there can be wide variances in engine temperature.

Thank you Bill, my question was intented a as an average temp for an vspec engine, because here he are running 4 vspecs, 3 of them are in the 210-220F in the same race day (36-38F / 20% humidity) but mine is 260F, (same fuel all of the engines) so I was wondering why the hi temp.

They are running the extra shim in the button head, is that a factor to cool down the engine?

An extra cylinder head gasket (many times called a "shim") is used to lower compression so that detonation doesn't happen when high-nitro fuels are used and with tuned exhausts. If your engine is experiencing detonation, it will run hotter than it would otherwise.