Thanks for the help, I'm looking into the P5 right now.

Based on the pic of the clutch, not that i have one, butit looks like the material is added to a regular clutch shoe, and so it may sit a bit closer to the bell and require more tension on the spring to keep the engine from being dragged down by the clutch at idle, it's probably stalling when you let off the throttle, not when you get on power, it's not about clearing out as muchas it is about the drag at idle....I would make the springs tighter. that should solve your problem, and readjust the idle and low end.....

A friend of mine running Mugen recently switch to the buku clutch and he was having problems flaming out after the clutch install. This was at the Nitro Challenge a couple months ago and Monty was in attendance so he there right away to help. He found out he had some clearance issue between the buku flywheel and the brake pads which was causing the engine to stall when they made contact. From what ive heard about the buku clutch, you are supposed to tighten the clutch after the first few runs because the heat will weaken the springs slightly. the picture of your clutch doesnt really indicate that it was rubbing on anything but its just something to keep in mind.... The engine internals look very good as they should with less than 2 gallons through it and the seal on the top of the piston looks immaculate.
How stable is the idle?

I literally has the same thing this past weekend except with a Werks clutch in My MBX6t. I put the motor in the truggy for the first time. Only thing different from previous runs in the buggy was the pipe and clutch. In buggy I was running 9886 and stock Mugen clutch, truggy I run OFNA 086 and tried Werks "light" clutch. Motor would die with no rhyme or reason in the truggy. Could not figure it out at all. Took clutch off, shimmed correctly, bearings like brand new. So I threw on a spare Mugen clutch and the problem was solved. Ran for 45 minutes straight and ran much better for some reason on stock clutch and did not touch anything else. Do not know why but the CRE P5 did not like the Werks clutch at all!!!!!! Sounds like you might be suffering from the same symptom as I was.

That the thing... I was so frustrated this weekend with the idle that I spent 30mins prior to my race tuning it. The idle was perfect.. and some of the more experienced A drivers agreed... Although they were OS users. I"m going to check the springs and figure out where we stand.

Lol... Funny thing is my stock 4btt was sitting in my tool box ready to go with a stock clutch... I should have gone with that one. You live you learn... Stay tuned for my video as I try to get my beast up and running properly... I will give the BUKU 1 more try.

I do not know why, and not to bash, but I have tried all of the aftermarket clutches and I keep going back to the stock Mugen.....Most reliable and feels really good. Nice and simple and eliminate any problem in a race!!!!!

Agreed. The Mugen clutch never gave me any issues except the 1.0 springs suck and break every once in while when new....Have you tried this one? I am in love with this clutch.

The stock Mugen clutch with the hard Mugen shoes and 1.0 springs is the best clutch on the market. One less gadget to fail....

Guys,

A very friendly gentleman from BUKU contacted me and explained what likely happened. After taking a close look at my Clutch Bell I didn't shim it properly and the clutch shoes touched the face of the clutch bell. I didn't notice it right away but there is a grove at the face of the CB and the shoes also show evidence of this. So there you go... as is VERY common in this hobby... USER ERROR! lol

Thanks to BUKU and Clockworks for your help and customer satisfaction! Unbelievable customer service... Now let me get this car back together... Video will come shortly.. Also... I'll post pictures of the BUKU diagnostics... Brian was BANG on!

Here's the problem... Thanks to Brian from BUKU to point this out... Notice the White line indicating the wearing and of the front face of the clutch bell. When landing hard forward over the triple the clutch shoes wandered ever so slightly with the play in the clutch bell and stalled the engine.

This was due to poor shimming... sometimes it's just back to the basics!

It doesn't take much to stop an engine. You see people do it with their thumbs!

Properly setup aftermarket clutches work very well and can compliment your novarossi engine nicely

Hope you get it all figured out luckylouse , lmk if i can ever help ya out brotha

Thanks Houston... I really appreciate it!!! Brian Made mention that you are a big supporter of the BUKU too.... So that makes 2 Novarossi Guru's that like the Buku... sounds good enough to me.

Hey John... Next time you go to Hardcore send me a PM if you want to play around with this set-up I have. Are you running Nova? If not you must be thinking about if you're speaking up in this thread.