.21 engine question
12-26-2008, 11:39 AM
#2
usually, thats what that means.. how many gallons does the engine have on it?
12-26-2008, 11:47 AM
#4
it could be.. not sure. I wouldn't think that after only 3 tanks it would be leaking.... I had an RB front bearing go bad before the 1 gallon mark... but not 3 tanks
12-26-2008, 11:56 AM
#5
no it does not mean you need to replace it. it means the engine is running very rich and u need that for atlest 1/2 gallon of fuel and it will go away. been in the hobby for a long time. any more ? u can pm me or call me thanks nate
12-26-2008, 11:56 AM
#6
it's not uncommon to see the OS leak fuel from the front, they are so fat during breakin this is when it seems to happen the most, i would continiue to run it in, unless you think the front bearing you replaced may not be seated all the way. when you start to lean the motor out the leak 8 times out of 10 goes away and last for several gallons, this is what i have seen out of alot of v specs, good luck
12-26-2008, 12:11 PM
#7
The front bearing on my Nova weeps a bit too and it's normal, especially if you run it rich. If you want to be safe, remove the bearing from the case, clean it, re-lube it and see if it feels gritty or notchy. If it still turns smoothly, just put 'er back in. If not, replace.
12-26-2008, 12:21 PM
#9
Stuart,
I'd do a pressure check on the bearing.
To do a simple blow check, the back plate & plug must be installed and the carb removed. Turn the crank so the induction port is open and blow forcefully into the carb opening. Look, listen & feel for any signs of pressure loss. A leaky bearing will be pretty evident.
A little oil loss though a bearing isn't bad, you know it's getting a good lubing
.
chunk
I'd do a pressure check on the bearing.
To do a simple blow check, the back plate & plug must be installed and the carb removed. Turn the crank so the induction port is open and blow forcefully into the carb opening. Look, listen & feel for any signs of pressure loss. A leaky bearing will be pretty evident.
A little oil loss though a bearing isn't bad, you know it's getting a good lubing
. chunk
12-26-2008, 05:12 PM
#10
it's not uncommon to see the OS leak fuel from the front, they are so fat during breakin this is when it seems to happen the most, i would continiue to run it in, unless you think the front bearing you replaced may not be seated all the way. when you start to lean the motor out the leak 8 times out of 10 goes away and last for several gallons, this is what i have seen out of alot of v specs, good luck
+1.... I have seen two or three of these leak for a bit, then quit. Both of my speeds leaked some when new and I saw another guy's do it. Run it a little more and monitor it.
12-26-2008, 05:22 PM
#11
I had a rb c6 bbt leak during break in and for the first 1/2 gallon or so. I contacted rb and they said it impossible to seal the front bearing totaly. as i race tuned it for max power the leak went away for the most part.
If the engine is running well and leaks a bit, It is doing well, mabye your pit man spashed too much, wait till next run, dont be too anal, dont waste money, keep racing that sucka!!!
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