The New Werks B5 .21 Racing Engine
#8356
I had a snafu happen with my B5 this racing weekend. My air filter came off on my RC8.2 buggy during qualifiers and the engine flamed out. The B5 is my first nitro engine and is / was an absolute beast. I'm wondering if the engine is a loss or if there is anything I can do to repair it. The engine feels like it has good compression still. It passes the flop test. The engine has three gallons on it. Suggestions?
#8358
Pinch was still very good, no sign of issues with anything internally, no scratches or scoring on anything, everything nice and tight...... all good except the front bearing. It was not leaking at all, just hard to turn, so he replaced it.
When he gave me the old bearing back it was rough to turn, after I messed with it for a while it turned better. I pulled the seals and the inside was dry no sign of oil or grease

What would cause a bearing to be bone dry?
#8359
Some fuel brands might have the performance, but don't have top notch lubricating qualities.
#8362
Tech Adept
iTrader: (8)
Joined: Jun 2008
Posts: 237
From: NC
I have a b5 with about a gallon on it, at my last race my hs needle was very hard to turn. I removed the needle to find the top rubber oring broken on the needle. With this oring missing with it affect the tune on the engine. I'm having some real problems keeping the engine running. The engine fires up every time you crank the car will idle for a few second and cut off, I'm also getting air bubbles in my fuel line. Thanks for any help or suggestions.
#8363
I have a b5 with about a gallon on it, at my last race my hs needle was very hard to turn. I removed the needle to find the top rubber oring broken on the needle. With this oring missing with it affect the tune on the engine. I'm having some real problems keeping the engine running. The engine fires up every time you crank the car will idle for a few second and cut off, I'm also getting air bubbles in my fuel line. Thanks for any help or suggestions.
If the car fires every time you try to start it and idles for a few seconds then dies your LS is probably too rich or your air gap is probably too small.
#8365
I have a b5 with about a gallon on it, at my last race my hs needle was very hard to turn. I removed the needle to find the top rubber oring broken on the needle. With this oring missing with it affect the tune on the engine. I'm having some real problems keeping the engine running. The engine fires up every time you crank the car will idle for a few second and cut off, I'm also getting air bubbles in my fuel line. Thanks for any help or suggestions.
Hope it helps
#8367
#8369
If you havent leaned or tweaked anything yet you might have to start to close your idle some if you still have it set to 2.5mm or larger.
Might be an effect of the piston/sleeve starting to break in. As they wear in your tune will change up a bit. Is the engine coming up to temps?
Might be an effect of the piston/sleeve starting to break in. As they wear in your tune will change up a bit. Is the engine coming up to temps?



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