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Offline N[]vA

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Re: The DRZ Thread
« Reply #780 on: February 03, 2010, 10:26:58 am »
Checked clearances, they were as adjusted after your off, should be, only six kilometres in between.
Wait up, does that mean you didnt check the clearance after the engine seized? or you did and they were fine
« Last Edit: February 03, 2010, 10:28:12 am by N[]vA »
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Offline mrhyde

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Re: The DRZ Thread
« Reply #781 on: February 03, 2010, 11:13:01 am »
Ticking? or slapping?

Could it be the valves kissing the piston or the cam chain thats a little stretched?

If there is a new chain on, then there shouldnt be problem.



Niv, Id check the valves when you dump the oil to just be sure.
 

Offline N[]vA

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Re: The DRZ Thread
« Reply #782 on: February 03, 2010, 11:16:22 am »
I will check them when I do the oil change.  :thumleft:

Its a ticking not a slapping, atm I feel that LeCap has to take a look at it. it's to soon after  :deal:
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Offline lecap

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Re: The DRZ Thread
« Reply #783 on: February 03, 2010, 11:32:24 am »
Excuse my ignorance here - but doesn't a engine rebuild go along with checking the other things that is part of the engine ?
Nothing in the head was wrong. No wear on journals and cam lobes: The valve clearances were a bit too tight after Jan's off, adjusted back then, engine blew, rebuild, checked on Monday after fitting the cams and still ok.
Damage to the engine was in the bottom end primarily with most bearings destroyed by debris and big end seized, also seized piston also possibly caused by all the crap flying around the crankcase.

No use speculating about a top end noise, best is to open up and check.

You can not possibly disassemble every component and measure everything. With some parts / problems there is also little if any way to tell if something packs up tomorrow. If you rebuild an engine you make informed decisions like cams & journals look good, you assemble without measuring journal clearance as a wearing journal or cam lobe would give itself away by optical signs.
Alternatively you throw everything away and buy everything new. Ideally the whole bike which will come with warranty. Then you do not have to take any risk with a rebuild.

The racing cam in Jan's bike was not fitted by me nor do I have or could I find any information with regards to it. Took it out & put it back as it was.

The engine was race modified at least once. It was rebuild once already too. Either the engineer tuning the bike or the previous owner lied massively about the modifications done :o There is fancy mods some guys do which open more than one can of worms. Example: Plane head to increase compresion or fit hotter cam, clear valves by increasing size of valve pockets. Problem starts if you replace the piston :o This is my biggest fear although it should have made a noise from km1.

The timing chain seemed to be fairly new and was not replaced, the tensioner has plenty of adjustment left.
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Offline N[]vA

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Re: The DRZ Thread
« Reply #784 on: February 03, 2010, 11:37:31 am »
I noticed the noise within the first 10 - 20km's though it seem allot louder now, might just be me paying attention to it.

When would you be able to open it up and check? also whats the time span of checking like that as I will need to wait around
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Offline lecap

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Re: The DRZ Thread
« Reply #785 on: February 03, 2010, 11:42:36 am »
Best to check asap. Does not take too long but I do not have shims for the DRZ in stock. Means it takes time to fetch the shims if the valve clearance is too much.
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Offline N[]vA

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Re: The DRZ Thread
« Reply #786 on: February 03, 2010, 11:45:45 am »
Best to check asap. Does not take too long but I do not have shims for the DRZ in stock. Means it takes time to fetch the shims if the valve clearance is too much.
Will see if I can take it past ktm or andy's work shop and check the clearance and give you a call if they are fine I will come through to you after.
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Offline Andy660

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Re: The DRZ Thread
« Reply #787 on: February 03, 2010, 12:57:31 pm »
N[]vA , if that was a racemotor before . does it have a high lift cam in it , and was the standard piston not pocketed deeper for the cam perhaps ?

I dont want to worry you  , but perhaps you should get the petrol tank of , check the tappet clearences first , if all is well , we use the helmet cam to look down into the barrel , and check that the valves arent coming in contact with the piston.

This is all , if the cams are race high lift jobs , of course ?
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Offline Bus

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Re: The DRZ Thread
« Reply #788 on: February 03, 2010, 01:02:11 pm »
That bike is supposed to have a stage 1 inlet hotcam, which should be plug & play, no additional work required when fitting it.  ???
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Offline Oros

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Re: The DRZ Thread
« Reply #789 on: February 03, 2010, 02:01:47 pm »
Hot cams are noisy, but if you had the cam in before & the noise is more than before then i would check it out ASAP.
(If the motor was built up from the bottom all should have been checked during the build)
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Offline N[]vA

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Re: The DRZ Thread
« Reply #790 on: February 03, 2010, 02:01:59 pm »
That bike is supposed to have a stage 1 inlet hotcam, which should be plug & play, no additional work required when fitting it.  ???
It was supposed to have allot of things though

N[]vA , if that was a racemotor before . does it have a high lift cam in it , and was the standard piston not pocketed deeper for the cam perhaps ?

I dont want to worry you  , but perhaps you should get the petrol tank of , check the tappet clearences first , if all is well , we use the helmet cam to look down into the barrel , and check that the valves arent coming in contact with the piston.

This is all , if the cams are race high lift jobs , of course ?
LeCap did the work as such I am going to take it to him and he must tell me whats going on
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Offline N[]vA

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Re: The DRZ Thread
« Reply #791 on: February 03, 2010, 02:39:06 pm »
Well im on my way to LeCap. will update later
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Offline sidetrack

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Re: The DRZ Thread
« Reply #792 on: February 03, 2010, 04:03:59 pm »
DRZ motors are all noisy by nature (lots of ticking in mine). When the timing chain starts to go you will definetly hear it.
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Offline Oros

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Re: The DRZ Thread
« Reply #793 on: February 03, 2010, 05:24:03 pm »
A build that took so so long should be meticulous, all the best mate. :thumleft:
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Offline N[]vA

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Re: The DRZ Thread
« Reply #794 on: February 04, 2010, 07:00:10 am »
k so I took it through to LeCap and he took it for a spin. conclusion is that the sound isn't any thing with the engine, which is a hell of a relief  :P

So it had to of been something vibrating at a crazy high frequency starting at 3-4k rpm and building till about 6k and then quietening a lil bit at 7k. did an oil change last night and after started stripping one thing off the bike at a time and riding it down the road and back, like 1.5k, until I found something that was vibrating  :patch:

was running up and down till late and eventually got gatvol and pulled off every thing I could, plastics, mirrors, hand guards etc etc..... turns out that's it's the new mirrors (which has been the only addition to the bike  ::) ) the left hand mirrors bolt is like 1 or maybe 1/2 a mm to long and it sitting on a bolt below it and some how causing this insane vibration. so today I am going to shorten the bolt and find a thick rubber washer to put under the mirror and will see if it is gone  :laughing4:

I will be over the moon if its something that stupid  :laughing4:
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Offline mrhyde

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Re: The DRZ Thread
« Reply #795 on: February 04, 2010, 07:10:56 am »
 :thumleft:
 

Offline letsgofishing

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Re: The DRZ Thread
« Reply #796 on: February 04, 2010, 07:25:55 am »
My motor was also noisy - cam chain and tensioner replaced and it sounds just the same!
Serviced every 5k and goes like stink!
I know this isn't very helpful  ;)
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Offline mrhyde

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Re: The DRZ Thread
« Reply #797 on: February 04, 2010, 07:39:19 am »
Serviced every 5000km?

are you serious?

I would think with only 1.8l oil I would service it every 3000km at the latest.
 

Offline Eisbein

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Re: The DRZ Thread
« Reply #798 on: February 04, 2010, 09:29:16 am »
Serviced every 5000km?

are you serious?

I would think with only 1.8l oil I would service it every 3000km at the latest.

I think LGF rides it more dualsport than enduro...

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Offline MrBig

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Re: The DRZ Thread
« Reply #799 on: February 04, 2010, 09:42:54 am »
My XR4 takes 1.8L with filter change (also has an oil cooler) with the recommended oil change interval 1000 miles
I do a change at least every 1600-1800km
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