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Old 10-30-2012, 07:53 AM   #6181
Aaron from Texas
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Quote:
Originally Posted by crankshaft View Post
I drove to Boston this morning to help dyno my 690 and get the base maps built. The results so far are excellent! The throttle off idle is very, very crispy. I've never had it feel that good with TuneEcu or the Vortex, it was amazing.
It made 57HP at 6500 RPM but we encountered a strange problem where the Pulser coil voltage gets a little crazy and throws the timing signal off a bit.
We found the problem, so its getting more dyno time tomorrow to finish up the map.

The power and torque curve is really smooth and parallel, right to 6500. Once the pulser is adjusted, it will pull to redline cleanly and make even more power. My best guess is 60-61 HP at the rear wheel tomorrow. The exhaust is a Q4 with the insert and the simple UNI pod filter, I wonder what we'll make with an open exhaust The motor is bone stock, no cams or big bore kits.
Very very nice... I'm wondering what that thing will do with an Evo2 Cam. I saw a sheet from an SMC with 63 RWHP with an Evo2 Cam and DynoJet PCV (which sucks)... You're already there without the cam.
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Old 10-30-2012, 08:08 AM   #6182
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Originally Posted by Kirk the Jerk View Post
Very very nice... I'm wondering what that thing will do with an Evo2 Cam. I saw a sheet from an SMC with 63 RWHP with an Evo2 Cam and DynoJet PCV (which sucks)... You're already there without the cam.
What the cam does is take the power off the bottom end and put it on the top end. Good for some applications but not so good for lugging around in the dirt. Leave that cam for the sumo/track guys.
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Old 10-30-2012, 09:28 AM   #6183
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What the cam does is take the power off the bottom end and put it on the top end. Good for some applications but not so good for lugging around in the dirt. Leave that cam for the sumo/track guys.
Exactly, I'm looking for mid range and smooth power delivery. The goal has been met, the peak HP is just a bonus.
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Old 10-30-2012, 10:40 AM   #6184
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What the cam does is take the power off the bottom end and put it on the top end. Good for some applications but not so good for lugging around in the dirt. Leave that cam for the sumo/track guys.
Interesting... Didn't know that.
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Old 10-30-2012, 10:59 AM   #6185
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My wild ass guess was correct, 61hp at the rear wheel at 7500 rpm
Linear curve, right to 7500! Now its time to ride it in anger for a bit and make sure everything is good!
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Old 10-30-2012, 11:08 AM   #6186
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Originally Posted by crankshaft View Post
My wild ass guess was correct, 61hp at the rear wheel at 7500 rpm
Linear curve, right to 7500! Now its time to ride it in anger for a bit and make sure everything is good!
Post up some fuel tables from the 'squirt system, if you can... I'd be interested to look at that.
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Old 10-30-2012, 11:41 AM   #6187
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Ktm 690 enduro help needed pls

Hi all

i am currently traveling south america on a KTM 690 Enduro and have a problem..

engine noise ticking very rapidly turned into a full melt down from the bike

i am some what mechanically inclined so i set to work.. to try to see what the hell had happened..

I was quite sure that this was a valve issue. took off the head to reveal a super f**ked Valve Rocker Bearing that has stripped its self and seized.. also damaging the Valve Cams too..

As i can tell there dos not appear to be any other damage done to any other parts..

my questions for anyone who can help is would this have done any other damage to the motor... i.e. the piston, cylinder etc... this is not an easy thing too tear down to check..

and other than ordering a new Rocker Arm and Valve Cam what else does anybody recomend i should replace with these..


many thanks

James














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Old 10-30-2012, 11:58 AM   #6188
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Aw man, that aint pretty...

I would verify the oil pumps are in spec in terms of pressure and volume.

No use replacing parts if'n the oil ain't gettin there.
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Old 10-30-2012, 01:31 PM   #6189
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When my rockers went bad I did some searching and discovered that it wasn't uncommon. I note that you have the newer style rockers not what came with my 2009. On mine one shaft came out and I was able to push the other one out with my finger plus the needle bearing came apart. Yours just looks ceased.

I would replace both rockers.

What is that red oil you are using?
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Old 10-30-2012, 02:15 PM   #6190
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LOL, so the more I tear into my motor the more I find I need to do. So new piston to go along with the new rings, and of course the cylinder needs to be worked over. If the cylinder is worn past spec, then it's going to have to be sent off.

I did pick up a used cylinder and piston with rings with 4.5K miles on Ebay for $100. Figure I'll toss that on for now, and next time I need to do a top end just swap cylnders and pistons.
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Old 10-30-2012, 02:47 PM   #6191
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LOL, so the more I tear into my motor the more I find I need to do. So new piston to go along with the new rings, and of course the cylinder needs to be worked over. If the cylinder is worn past spec, then it's going to have to be sent off.

I did pick up a used cylinder and piston with rings with 4.5K miles on Ebay for $100. Figure I'll toss that on for now, and next time I need to do a top end just swap cylnders and pistons.

So your sending it off to be bored out too 728cc
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Old 10-30-2012, 02:53 PM   #6192
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So your sending it off to be bored out too 728cc
Hmmmm Might have to look into that.
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Old 10-30-2012, 03:35 PM   #6193
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Quote:
Originally Posted by Mini Trail View Post
When my rockers went bad I did some searching and discovered that it wasn't uncommon. I note that you have the newer style rockers not what came with my 2009. On mine one shaft came out and I was able to push the other one out with my finger plus the needle bearing came apart. Yours just looks ceased.

I would replace both rockers.

What is that red oil you are using?
Yeah, I read about bad rockers in the supermoto forums.
Somewhere in here:
http://www.supermotojunkie.com/forum...KTM&order=desc
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Old 10-30-2012, 03:55 PM   #6194
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Does anyone know anything about the BIg bore kits for the 690? Char on SM junkie did a big bore mod to his 690sm using a stock comp JE piston. I'm interested in finding out more info. Wasn't it 692cc?
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Old 10-30-2012, 04:12 PM   #6195
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Have a look here



http://www.gw-racing-parts.de/index2...is=2010&lan=en


KTM 690 bigbore - tuningkit. New camshaft stage 2. Cylinder boring for 104 mm and new LFC plating. CP forged pistonkit of the extra class 104,00 mm, + 2 mm oversize, 717 cc, compression 12,5 : 1. Delivery including the suitable piston rings, wrist pins and wire locks.Cylinder head porting inclusive radius valve seat cutting. Inclusive shot peen of the combustion chamber and channels. Including crankshaft balancing.
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