SRX 600, Need engine help!!!

H

highboy77

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Joined
Nov 15, 2006
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25
Location
Valders, WI
Does anyone have expirence with the Hauck Head mod on a SRX 600? They shave and redome the head and give you a thicker base gasket. My problem is it seems to drop a cylinder Once in a while at high RPM, Down in the lower range it seems to run good. I haven't run the sled since last year but from what I remember it will spool up to Mid-High eights no problem then drop, but not every time. Or I wont be able to get it past 7000 and have to play with the throttle a bit to get it to go. It also has Boyesen dual stage petals, bender can, Vertical dividers removed from air box, and Hauck boost bottle. I believe the main jets are around 152.5, 155 range give or take a size. I think I might be a hair rich? The plugs come out cardboard maybe a hair darker, but i dont want to burn her down. I also have a heel clicker clutch kit I can put on, What kind of RPM should I clutch this thing at? Also Hauck suggested I drill the piston ports with a 1/2 inch bit, ran for shit. So 3 new pistons later (along with my anger level going through the roof) It runs quite a bit better but not like it should. Everytime I have called Hauck they didn't have any help for me. What do you guys think, I,ve been looking for new heads but still have a shimmer of hope I can at least make this work. Kind of a long story but I tried to get all the facts to you.

Thanks
 

sounds like a bad wire cap at the sparkplug... make sure it doesnt run to ritch i mean wayyyyy to ritch
 
That was one of my thoughts also, put on 3 new caps, still not good. I also checked wires and coils, all good, but I'll definatley check again. I might have to try leaning it out a bit more, with my fingers crossed.
 
lolll well check your piston wash and the color of your plug ?? make sure those power valve work perfectly if they have some ask mr viper for compression squish and everything for that motor i only know little about 700
 
you can ask turk about your clutch issue to make sure your not overshifting the engine
 
If your plugs are just a "little darker than cardboard", I'd say the jetting shouldn't be the cause. But then again, are you checking the mains by running it wide open for as far as you can/dare and then hitting the kill switch? Just wondering when your checking them. I don't have any experiance with Hauck, but they should easily be able to give you a rough jetting recommendation if you provide them with altitude and temperature numbers. Their lack of help would make me be skeptical of using their products, not that you have any choice now.

This problem kind of resembles the deep powder bog, which is either an air starvation problem or a pipe being cooled problem (or a super rich problem, could still be your mains?). You don't happen to be riding in powder when the problem occurs, do you?
 
Put the airbox back to stock
Get rid of the can
Replace stock jetting
Put the stock reeds back in
Clutch that sled to run at 8300 rpm.
I owned 2 600 SRX,s. been der dun dat!!!
 
ok, the cylinder head cutting and extra base gasket dont have anything to do with it. The reason it ran worse after you drilled the hole out to 1/2" in pistons made it run rich, the hole cant be drilled straight in, it needs to be offset, not go below the original floor of existing hole or it doesnt shut off.
I would look into the cdi box/powervalves, the 98-99 srx are very common with the powervalve circuit being messed up in the box, the cdi box sends the signal to the servo motor to cycle, and your low 7000rpm problem is exactly what happens when the valves dont open. You can check this by placing sled up on ajackstand and removing servo motor cover, start it up and give it throttle, watch to see the servo pulley SMOOTHLY cycle, if its all erratic and jerky while up at 6800-8300rpm or higher theres your culprit. just a thought
 
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Yep; what don said plus I had both stators fail very early in life on both my 600 SRX,s. The 2nd time it made my sled run so goofy it drove me nuts. 1 time it would pull 8400 then 5 minutes later it would not go over 7900 rpm all day long back & forth.pm me if you need a good clutch set up for that sled. cheap & runs well!
 
I just had a 600srx in here last spring with same problem, erratic cdi box signal, I forgot about the stators on the early 98-99 sleds, good catch turk.
 
Ok thanks guys, we've all been there i'm sure where you think you can get a little more out of the engine then a little more then you go too far and come across running issues and reliability issues. All part of the game in my opinion, keeps things interesting. Anyway, i'll have to check out the electrical system and the powervalve operation once I pull it out of storage in a month or so. What is the remedy if I find the powervalve servo acting sparadically, new CDI? Yes my stator went out this past winter on me as well, I was doing a main jet pull and shut it down then went to fire it up again and nothing, I kinda thought I scored the pistons at first but after checking compression I found I didn't. I picked up a different one on e-bay that checked out when I resistence tested it but could it still be bad? I'm not running in powder, just trails and the river. When I do a main jet run I find the longest stretch I can hold it WOT then shut it down while still at WOT. Hauck was spot on the first time with jetting suggestions when I did the boost bottle and air box mod, so I figured they knew their stuff (and I'm not saying they don't, i.e. drag racing success) but it all seemed to go down hill with that head mod. Any help appretiated, Thanks again!!!!
 
I hear ya!!!, So i'll check out my entire ign. system and check to make sure the power valve servo is operating smoothly. When I resistence test the stator it must be cold, correct? Or doesn't it matter? Hopefully I'll find my problem. If not I'll let you guys know what I have. Thanks again for all the help!!!!!
 
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