why does my engine rattle?

**monsta** · 11-10-2009, 01:56 PM

when I roll it on its side...

I bought the 748 a few months ago to 'mostly' use at the track.
Anyhow, out there a few weeks ago, first session, about 3rd or 4th lap, flat out going over the top of the hill...

anyone got a spare engine?

**R160** · 11-10-2009, 03:40 PM

eurobrit often have engines going, and good old ebay, sorry its grenaded Monsta :-(

**XXX3** · 11-10-2009, 03:45 PM

Holy shit!!

**quattro750** · 11-10-2009, 03:58 PM

oh dear, no wonder she nipped up! lucky to stay upright M. nope you can't have mine.

q

**ddmoore** · 11-10-2009, 04:01 PM

I do see something has broken, but please forgive the noobness. what exactly has broken and did it fall inside that 'hole' in the thing that looks like the thing that it broke off?

sorry to hear about it, im just curious to find out

**Bundera** · 11-10-2009, 04:03 PM

**Arwon** · 11-10-2009, 04:13 PM

I was going to say it rattles cause its a Ducati, but then the picture paint a disaster tale.

Good luck fixing that.

**Xuaxace** · 11-10-2009, 04:18 PM

same boat as ddmore... Is that the conrod snapped?

**Arwon** · 11-10-2009, 04:19 PM

Originally Posted by Xuaxace

same boat as ddmore... Is that the conrod snapped?

no its a chicken wing......

of course its a conrod.

if you look down into the hole further you will see the shiny crank journal, and the connecting rod (conrod) for the other piston, which goes to the top of the picture.

**drifter** · 11-10-2009, 04:23 PM

Duct tape fixes everything

**monsta** · 11-10-2009, 05:09 PM

other bits that made it rattle...
the cases are smashed and ground, barrels are fucked!

but at least the heads are ok!

**Sprint** · 11-10-2009, 05:14 PM

That's an expensive basket case right there.
Drop a line to Vee Two and see what they have stashed around the place?

S.

**monsta** · 11-10-2009, 05:17 PM

Originally Posted by quattro750

oh dear, no wonder she nipped up! lucky to stay upright M. nope you can't have mine.

q

huh... lucky you didn't get a spray of oil seeing as you was right behind when it made that 'funny noise'!

**monsta** · 11-10-2009, 05:20 PM

Originally Posted by Sprint

That's an expensive basket case right there.
Drop a line to Vee Two and see what they have stashed around the place?

S.

haha
yeah, dont worry I'll be seeing what vee two can do!

**panic** · 11-10-2009, 05:25 PM

you say flat out, did it over-rev ?

**quattro750** · 11-10-2009, 05:27 PM

bloody four valvers eh? thrash the livin daylights out of a two valver with sfa probs and then this..........

q

**quattro750** · 11-10-2009, 05:29 PM

Originally Posted by monsta

huh... lucky you didn't get a spray of oil seeing as you was right behind when it made that 'funny noise'!

i was too busy wondering why the trumpy was makin funny noises as well

**monsta** · 11-10-2009, 05:38 PM

Originally Posted by panic

you say flat out, did it over-rev ?

hmmm, I've been known to make it see thee rev limiter before...

**smeghead** · 11-10-2009, 05:52 PM

Give Justin @ Pro Twin a call, he usually has a variety of spares around ... could even make it a 'special' motor for ya.

**Pat1098** · 11-10-2009, 06:12 PM

That's a sad story right there. Piston and rod in tiny pieces - you need to find the cause for this calamity. May have lacked clearance between piston and head - may have come loose at the big-end, which causes above-mentioned lack of clearance. Just check piston/head clearance on reassembly - needs around .032" (.8 mm) clearance between the piston and the head's 'squish band'. These clearances are critical, and should be equal between the two heads. 32 thou is a minimum - more is safer, but costs performance...

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