Havent read previous posting if any!

So when you start the engine comes up to temp the motor will give you a high / Low / High / Low REV after hitting the brakes the idle with drop and hold a tune ??

Start the motor again get to temp hit the brakes pinch the fuel hose 1" from the inlet count / time and see what you get. If it rev's up as soon as you pinch you are way to lean it should run and die between 5-7 sec all depends on the user. Its a good test just to make sure your LSN is set correct. If it REV really high before it dies your idle gap is open to much.

I would also take the air filter off and card restrictor off, turn on your receiver and radio and simulate what you are doing watch the carb slid make sure the carb slide is closing all the way. Put a small dap of oil on throttle linkage this will help with possible binding. If its not closing all the way use your throttle / brake adjustment button on your radio a adjust your linkage then your EPA's

If all good change the carb and see what you get

If you idle gap / linkage / carb and LSN is set correct then you have a air leak somewhere.

MY suggestion:)

are you guys getting 10+ min in a buggy with this engine or is that in a truggy?:confused:

Depending on the track,weather etc.. I get 9-10.5 in buggy and 10.5-12.5 in truggy using werks 30% 2013 pipes..........

Wow!!!
You guys and Ron are FANTASTIC!!!!!!!
I'll try to describe what I did to get this BEAST running fabulous again.
First, I tried a another tank from Hyper9. Just to see if there was a tank problem. Well, the tank wasn't the problem(did the same thing).
Second, I asked my friend to bring his engine over and put on his carb(he has the same engine). Keep doing the same thing. So I knew it wasn't the tank or the carb.
Third, I pulled the clutch apart. Seemed that the shims were finally settled in and the clutch was loose. So I cleaned and relube the bearing, and added more shims.
Forth, prayed and SHAWAM!!! She is ready to take on the pros. Well, kinda HAHA... Leason learned from a rookie.
I just wanted to say thanks for everybody help.

Anytime! we are glad to help:)

Tried to order a new B5 from rcplanet and they are out of stock now. Anybody no of a place that has the B5 with new carb in stock? Also the 2013 pipe is a hard one to find.

If anyone is wandering about the power of the B5, I got the priveledge to race against Drake in the expert truggy class at The airtronics winter nationals last week. Let me tell you of coarse he is a better driver than me, but when we were side by side on the track and down the straight he could not pull me:) So if anyone has any doubt , Dont! These things hang with the $350 + engines, Kortz has proved in buggy and I got to see for myself in truggy last week. I was running a WERKS 2013 pipe in D8T with 1.0 mugen springs and dynamite aluminum shoes. JUst turned 5 gallons on my truggy B5 and a tad under 5 on my buggy and still great compression:nod:

Ron said A-main it getting a big shipment next week along with the WERKS 2013 pipes. I would go ahead and place a backorder at A-Main for 'em just so you are locked in on 'em in case they sell out quick again.All the B5's should now have the new carb on them. amainhobbies.com

praying always works :nod: great news thats what RCTECH is the best so many great people out to help

cool thanks

Break in Advice
 

hey Ron,
So I've been following your instructions and here's where I am....I've gone thru 8 tanks, idle gap is now 'normal', lsn is set for consistent idle and I'm starting to lean the hsn to get up to temp (pulling trigger fully, beyond the point where lsn came out of bar). Let me say I'm in NJ and ambient temp is mid 30's so I know getting up to temp is gonna be more difficult. To compensate I've got the head fully wrapped in tin foil and am preheating the block.

I'm rolling on the throttle up to full briefly and getting off it. The car is flying, smoke is barely visible but definitely there at full throttle, when I let off and coast, the engine comes down on its own eventually achieving near idle rpms w/ no inputs from me, takes 5-7 seconds to get there though. Given the speed the truggy is travelling at full throttle, I'm reluctant to go in more on the HSN. If I sit for a few seconds and then try to accelerate there's a definite rich bog that gets cleared, gurgling sound, lots of smoke. To me that says lean the LSN but isn't doing so going to raise my idle rpms and as I said my idle gap is already normal, closing it more would get into the teeny tiny range. Is this low bog simply a break in phenomena that will go away as the engine is further broken in?

Temping after full throttle runs is still nowhere near 200 but performance is there, smoke is just visible. Going any leaner on the hsn seems a risky propositon, going leaner on the lsn will raise the idle subsequently causing me to close the idle gap even more to the point where there's barely any gap at all.

Hopefully I'm explaining clearly and you can offer some advice. Thanks...

BTW do you think the storms affected trucking up the east coast?

marshon50 - you describe exactly a common issue I have seen often when the temperature is really cold. I don't mean SoCal cold, I mean NE USA snow blizzard cold.

Thats good too know. i have only run mine on the track by my self are with other buggies so i wondered how I would do agianst others . Only 2 more months till the season starts for me !

Marshon, sstoffer might have hit the nail on the head. I'm going to be upfront and say that living in CA I do not have a lot of experience tuning nitro engines in freezing weather conditions lol! So I'm going to have to defer to the advice of some of the more experienced cold weather tuners lol! Also please keep in mind that I believe your engine is relatively new and has little fuel through it, so tuning right now is going to be a little different as if I'm correct your engine is barely starting to break in. Regarding the trucking it went out on the 2nd so please give it another day or so.

Regards,

Ron

The blizzard is definitely on the way, that's why I'm trying to get more tanks in, the weekend will be shot for R/C.

Update:
So I ran thru tank 9. I did lean the lsn by 2hrs or so and adjusted the idle gap smaller to acheive a steady normal idle. I didn't touch the HSN at all. Same stuff ocurred as previously mentioned....she's fast at full, barely smoke but there, comes down to idle after 7 secs or so on its own after a full speed pass, but will still bog after sitting for a few seconds. It even stalled on me once when I tried to give it throttle immediately instead of pulsing it to clear out. Took a temp was around 130F if that helps. Neither HSN or LSN is more than a 3/4 turn in from flush at this point.

Attached a pic to show the idle gap and head wrapped.