valve

While preparing for my valve job I was reviewing the older and newer manuals and some threads and noticed that KTM has updated the valve clearance specifications in the 2018 Duke manual. After some research I've established some facts: The Duke uses our same engine part # motor / head Some of...

Context: I have 2017 KTM RC 390 with Dunlop Q3+ and Puig metal valve stems (https://www.revzilla.com/motorcycle/puig-90-degree-valve-stems). I use Woodcraft tire warmers and run 32-33 hot in the front and 26-29 hot in the rear. I have done more than 20 track days with two sets of Dunlop Q3+ and...

I though I would post this, to help wondering minds save some cash... https://www.youtube.com/watch?time_continue=334&v=8X7h6H2LSpU Cliff notes are that titanium valves don't perform well on the exhaust side for motors that run hot. Titanium can be used on the intake side, but unless an alcohol...

Hello, I would appreciate some input from more experienced members here. I had check the valve clearances and I found that all four valves are out of specs and pretty tight. Both intake valves were only 0.04mm and both exhaust valves were 0.08mm. Now since the dealer has shims that are...

(2015 RC390) I’m so fed up with this bike right now!! I don’t have money to continually dump into this thing to make it run or run correctly. I had to helicoil one of the valve cover bolt holes recently and after two days of riding its leaking from the same bolt. I’m afraid to tighten it...

Could you please tell me what tools are needed for the 620 mile valve clearance service and what parts, like gaskets, sealing washers, o-rings, etc., need to be replaced. Is engine blocking screw needed?

We have produced a set of titanium valve retainers for RC390's, you may ask why we would do such a thing? We have found that with extended high RPM usage the stock valve retainers will fail. The angles between the collets and the retainers do not match well enough for them to hold they valve...

List of Mod's Akro flash bmc air filter (open lid) mivv Ghibli exhaust power commander 5 with a chad map for high comp gasket 42bhp before dyno cometic high comp gasket (permatex used) head and barrel machined 3 angle cut of valve seats and vac tested porting to inlet and exhaust tract port...

The bike makes quite loud..ticking/clatter sound on startup..the noise stays for like 30 secs and then it runs normal.. Took in the bike to the dealer today..,they said it is tappet noise so they removed head cover,checked clearances, replaced one of the intake side shims, and exhaust side...

while refreshing the cylinder head on one of our rc390cup bikes we came across one inlet valve cracked so we ordered two valve kits from ktm when these arrived we check them for stem to seat run out to find 5 of the 8 where bent and not useable and contacted ktm uk to be told that they had no...

I noticed after my last ride that I had a couple of drops of oil on the clamp that holds the breather hose on the air box that comes from the valve cover. The hose attaches to what appears to be a small box attached next to and part of air box. Any ideas on a fix? This is the only area that...

So I am approaching 600 miles on my RC390 and I know that the valves need to be checked along with the initial service. Normally I do all the easy regular service items on my bikes (torquing bolts, changing oil, adjust/clean/lube chain). I've never done a valve check and after reading threads...

At 15,684 miles I decided I had punished the KTM's mill long enough. I broke down and adjusted the valves. Of course, this required the acquisition of Harbor Freight's 1,000 # motorcycle lift that taunts us with that $299.99 coupon each month in the back of the MC mags. It's sweet! It all went...

I just scheduled my initial service with the dealer, and they told me that their KTM field rep said that the valve check is optional at this point. They said none of the ones they've done so far have been out of spec so save the money and do it at the next service at 5000mi or whatever. I...

Just got my new shim kit in the mail today! Wish me luck on the valve job this weekend! First go at the 390