Planet Minis

xlxrman · 10-30-2009, 04:30 PM

It was a fire-breathing motor, until today. Was racing my brother's Tak 124 S-Head and it went Kaboom. It's a TB117 with a BBR head, Inner Rotor Kit, and a Tak C/R 3 Speed Trans and Manual Clutch. Thankfully the trans and clutch are still good. The crank is possibly still good. The top end is history. Have no clue what caused it. I was about 3/4 throttle. Wasn't running lean at all. Just went pow. The exhaust valve is broken off. The valve stem is seized in the guide. Piston completely toast. See for yourself...

When I pulled the head off, I like how the piston is turned completely upside down.

The head when I pulled it off

The cylinder sleeve...

And the sweet looking piston...

crf50187 · 10-30-2009, 04:32 PM

that motor is carnage that sucks

JJW Designs · 10-30-2009, 04:39 PM

Your rod is shot dude, don't you dare put it back in. lol.

Don't you hate it when that happens?

monaghan · 10-30-2009, 04:41 PM

lookin good

xlxrman · 10-30-2009, 04:45 PM

Quote:

Originally Posted by JJW Designs

Your rod is shot dude, don't you dare put it back in. lol.

Don't you hate it when that happens?

Ya think? I don't know. Heres some pics of it.

03stage2 · 10-30-2009, 04:48 PM

That will buff right out....

xlxrman · 10-30-2009, 04:50 PM

Anyone have an idea what caused all of this? It's been ran about 2 hours.

dirtbkr188 · 10-30-2009, 05:00 PM

In the words of somebody of no particular significance once said on here...

"...that'll buff out..."

Just out of curiosity, what would that little gear be, peeking out of the cases, alongside the piston remnants ?

xlxrman · 10-30-2009, 05:03 PM

I don't know. The only gear that looks similar is the Top cam chain gear, I think. Couldn't be that, though.

mx'er 197 · 10-30-2009, 05:15 PM

Looks like the other half of the oil ring folded up.

dirtbkr188 · 10-30-2009, 05:23 PM

Quote:

Originally Posted by mx'er 197

Looks like the other half of the oil ring folded up.

I think you're right...

35mastr · 10-30-2009, 06:10 PM

It dont look good. Might of been running too lean. Or just over revving and you floated the valve.

Z · 10-30-2009, 06:49 PM

Are you running an oil cooler? Looks like you dropped your exhaust valve and the rest is history. Post up pictures of your camshaft please.

caseclosed715 · 10-30-2009, 07:05 PM

uhh

xlxrman · 10-30-2009, 07:21 PM

Must be the other part of the oil ring. Don't think it was running lean because the plug was nice and "mocha" brown. Not running an oil cooler. Was riding for about 5 min in 40 degree weather before it blew. I don't think it could of heated up that fast. I'll get better pics of everything in the morning.

caseclosed715 · 10-30-2009, 07:35 PM

I wouldn't use that rod unless you got it checked out. It might look ok, but looking ok and being within spec is totally different.

RiDe · 10-30-2009, 07:37 PM

at least now you can get the 30mm head kit. LUCKY!

xlxrman · 10-30-2009, 07:37 PM

I doubt I'll use it. I have a brand new crank, so I'll put it in to be safe. Also have a TB Race Head I'll use. Just need a new piston and cylinder, which I'm sure I could get from Terry. Kinda want to figure out what went wrong, so it doesn't happen again.

xlxrman · 10-30-2009, 07:47 PM

One more thing I noticed when I took apart the motor is that the cam chain was very loose. However, the motor was NOT making any abnormal noises while riding.

doopsx3 · 10-30-2009, 07:55 PM

valve failure caused the whole mess

10-30-2009, 04:30 PM	#1 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Look what I did today... It was a fire-breathing motor, until today. Was racing my brother's Tak 124 S-Head and it went Kaboom. It's a TB117 with a BBR head, Inner Rotor Kit, and a Tak C/R 3 Speed Trans and Manual Clutch. Thankfully the trans and clutch are still good. The crank is possibly still good. The top end is history. Have no clue what caused it. I was about 3/4 throttle. Wasn't running lean at all. Just went pow. The exhaust valve is broken off. The valve stem is seized in the guide. Piston completely toast. See for yourself... When I pulled the head off, I like how the piston is turned completely upside down. The head when I pulled it off The cylinder sleeve... And the sweet looking piston... Last edited by xlxrman; 10-30-2009 at 04:35 PM.

10-30-2009, 04:32 PM	#2 (permalink)
crf50187 2nd Gear Member Join Date: May 2009 Location: Tucson Arizona Posts: 548 My Mood:	Re: Look what I did today... that motor is carnage that sucks

10-30-2009, 04:39 PM	#3 (permalink)
JJW Designs Advertiser Join Date: Feb 2006 Location: Battle Ground, WA Posts: 3,366	Re: Look what I did today... Your rod is shot dude, don't you dare put it back in. lol. Don't you hate it when that happens? __________________ Graphic designer by trade, rider by heart.

10-30-2009, 04:41 PM	#4 (permalink)
monaghan 2nd Gear Member Join Date: Dec 2008 Location: Toronto, ON Posts: 967 My Mood:	Re: Look what I did today... lookin good

10-30-2009, 04:48 PM	#6 (permalink)
03stage2 PM Newbie Join Date: Oct 2009 Location: Akron, OH Posts: 18	Re: Look what I did today... That will buff right out....

10-30-2009, 04:50 PM	#7 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Re: Look what I did today... Anyone have an idea what caused all of this? It's been ran about 2 hours.

10-30-2009, 05:00 PM	#8 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: Look what I did today... In the words of somebody of no particular significance once said on here... "...that'll buff out..." Just out of curiosity, what would that little gear be, peeking out of the cases, alongside the piston remnants ?

10-30-2009, 05:03 PM	#9 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Re: Look what I did today... I don't know. The only gear that looks similar is the Top cam chain gear, I think. Couldn't be that, though.

10-30-2009, 05:15 PM	#10 (permalink)
mx'er 197 1st Gear Member Join Date: Jan 2008 Location: Central Illinois Posts: 156 My Mood:	Re: Look what I did today... Looks like the other half of the oil ring folded up.

10-30-2009, 06:10 PM	#12 (permalink)
35mastr 2nd Gear Member Join Date: Sep 2009 Location: Newark,Ca. Posts: 566 My Mood:	Re: Look what I did today... It dont look good. Might of been running too lean. Or just over revving and you floated the valve.

10-30-2009, 06:49 PM	#13 (permalink)
Z 5th Gear Member Join Date: Sep 2003 Location: KANSAS Posts: 8,540	Re: Look what I did today... Are you running an oil cooler? Looks like you dropped your exhaust valve and the rest is history. Post up pictures of your camshaft please.

10-30-2009, 07:05 PM	#14 (permalink)
caseclosed715 2nd Gear Member Join Date: May 2009 Location: New Oxford, PA Posts: 335 My Mood:	Re: Look what I did today... uhh

10-30-2009, 07:21 PM	#15 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Re: Look what I did today... Must be the other part of the oil ring. Don't think it was running lean because the plug was nice and "mocha" brown. Not running an oil cooler. Was riding for about 5 min in 40 degree weather before it blew. I don't think it could of heated up that fast. I'll get better pics of everything in the morning.

10-30-2009, 07:35 PM	#16 (permalink)
caseclosed715 2nd Gear Member Join Date: May 2009 Location: New Oxford, PA Posts: 335 My Mood:	Re: Look what I did today... I wouldn't use that rod unless you got it checked out. It might look ok, but looking ok and being within spec is totally different.

10-30-2009, 07:37 PM	#17 (permalink)
RiDe 2nd Gear Member Join Date: Feb 2009 Location: san dimas, CA Posts: 437 My Mood:	Re: Look what I did today... at least now you can get the 30mm head kit. LUCKY!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

10-30-2009, 07:37 PM	#18 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Re: Look what I did today... I doubt I'll use it. I have a brand new crank, so I'll put it in to be safe. Also have a TB Race Head I'll use. Just need a new piston and cylinder, which I'm sure I could get from Terry. Kinda want to figure out what went wrong, so it doesn't happen again.

10-30-2009, 07:47 PM	#19 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Re: Look what I did today... One more thing I noticed when I took apart the motor is that the cam chain was very loose. However, the motor was NOT making any abnormal noises while riding.

10-30-2009, 07:55 PM	#20 (permalink)
doopsx3 3rd Gear Member Join Date: Aug 2008 Location: San Diego Posts: 3,947 My Mood:	Re: Look what I did today... valve failure caused the whole mess