Didnt run the sack off but you can tell its got alot of power. The dual piston brakes are really awesome. Smiled from ear to ear on it lol.
Still waiting on my intake tube parts. No smoke out the pipe so hopefully I did get those rings right!
Its got a nasty bog, so ill have to mess with it. If you goose it at idle it will die.
The big obvious issue, is there is definitely a rattle sound from what seems to be the cam chain. I put a new wiseco chain in. When I put the tensioner back in, I retracted the rod...the let the bolt push it back in upon install. Any ideas of what I did wrong?
This is another reason that I like manual tensioners. It's not uncommon to put a new chain in one of these, and only have a couple clicks left. I suspect worn guides to be the culprit, but I've never seen proof of that.
The key to the manual tensioner is in how you set it. It takes some finesse, and that's why they're not for everyone. Put the engine on TDC compression before you install it, or it can jump time. The same goes for any tensioner.
Install the manual tensioner, then screw it in just to the point where the chain is taut. If anything, leave just a little free play. It's better to be slightly loose than slightly tight. Snug the lock nut.
Next start the engine, and release the lock nut while holding on to the adjustment nut. Adjust it while running, listening for the sound of the timing chain specifically. Not that the cams make some noise, and can fool you. I take the adjuster in a bit listening for the chain slap to stop, back out a little until I hear it, noting the point where you start to hear the sound. I try to lock it down right at that point. If anything, I will leave it a little on the loose side, and let it make a light sound. It's better to be slightly loose, than slightly too tight.
Once set, I never really have to mess with them, but I do have my engines apart occasionally trying different things. Whenever the noise gets noticeable, go through the same procedure.
As for the bog, it probably needs more accelerator pump shot. Does it have the o-ring mod? What leak jet does it have?
Thanks CFM! Great info. Ill report back when I get it in.
Im using a Slant FCR 39, not the MX from the yellow quad. I think there is no leak jet in those.
Took a quick look and the AP isnt shooting gas at all when using throttle....? EDIT: Confirmed clogged AP nozzle, found passage to clear it out.
Looking into the eddie mod now. Just not really understanding how to grind down the center. Mine looks to already be flush with the "outer ring"...? Also is it the top or bottom that is gound down? (top being spring side where the plunger touches to push in)
When I push the AP in with a wire it has a nice pump action. When I assemble and twist throttle, its like the AP arm doesn't have enough pressure to actuate the diaphram. Im assuming this is why you tie together?
Yes the bent part that goes in the arm hole has a little slop. Ill get some type of bushing.
That said, its the brass part that leaks where the straight shaft goes in to.
Also noticing its got a long 4 sec spray into carb.
EDIT: Took everything back apart, reset all gaskets wire etc. Now seems to shoot perfectly and no leak. lol wtf. Just my luck I suppose!
Considering it wasn't shooting at all, this should help the bog.
I have the same carb, had a bog as well when I set it up. I had the ocem needle in it. Change it to the NVCQ needle, 3rd clip from the top. It made a huge difference on mine.
I can search from my jetting.....have no clue anymore.
Carb Type: ---> Old Style Slant FCR 39
Main Jet: ---> 165
Pilot Jet: ---> 45
Fuel Screw: ---> 2 turns out
Needle: ---> NCVQ 3rd clip
Airbox: ---> None
Intake:---> Fuel Custom Intake from TRX450 (older)
Pipe: ---> Yoshimura RS-3
Engine Displacement: ---> 434cc
Cams: ---> NSHC
CDI: ---> Dyna FS Non Programmable
Altitude: ---> 0-1500 feet
Got the MCCT adjusted way in, but will not get rid of the tick. Seems a little better so hopefully its just the hotcam noise. Im afraid to really crank it in hard. I dont know what kind of tension we are talking.
Took it for a rip and the bog is gone now, the thing has a ton of power...night and day diff than my stocker. Thing freeking rips.
Bad news is, I got back after the quick ride and there is tons of oil blowing out of the black box everywhere. I could cry. What did I do wrong?
I really hope this smoke is just from the oil getting in the air filter.
It was not overfilled and now its a little low since losing the oil.
Typically, oil from the black box is either from overfilling the engine oil, or blow by. I wouldn't panic just yet. It may be worth washing the black box out, verifying the oil level, and trying it again.
I actually don't even use a black box anymore. I plug the vent at the cylinder, then run the big hose from the valve cover, at an upward angle, to a filter up by the steering stem bushing. I have found that to work pretty good. Many say that it can't be done, but I have not had a problem doing this on either of my big bore strokers.
On a side note, was that filter dry? They need oil to filter any dust.
I have my 06 Z400 that I am building to a 470 stroker.. I want to put oversized by 1mm valves in and was wondering if that can be diy'd with like a seat cutter or will there need to be more work done?
I am getting the ferrea +1mm intake&exhaust valves..
I have an 06 ltz400 and have damage to my left case and have decided to change out the bottom end rather than tediously replacing the left case. My questions are: (1)are there any differences in 03-08 bottom ends to 09-and up bottom ends? (2)If there are differences, what are they? (3) I guess...
My 04 Z400 has a weird ticking noise going on in the calve train... checked the valve clearances and the right intake side was about a thousandth of an inch too tight... i dont think that could have caused an issue. I might be wrong.
so i replaced the head on my ltz 400,when i came to assemble it back together, the camshaft wont sit at the jurnales(bigger), cold it be that the head was drz's head?
if so how can i know which z if i want to sell the shaft and caps...
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