What valve brand to go with?

Related:
Create New Tag

10/4/2015 8:27 PM

Yes I am back again with valve questions. I have figured out im going with titanium valves but what brand? I have a stock motor and stock piston, but I have seen xcledyne valves and been thinking about them but those seem more for full blown race bikes. What valve brand do you guys think I should go with? 2013 kx250fPhoto

|

10/5/2015 7:00 AM

OEM

Paw Paw

|

10/5/2015 7:24 AM

Stock motor go oem valves. If you building a race motor go pro circuit titanium valves. Basically everything pro circuit. Can almost buy a pro circuit race bike motor from there catalogue

|

10/5/2015 7:31 AM

So just use oem cause ive also lookes at the xcledyne ss valves which advertise that are just as good as ti. And what about kibble white valves? And why is it harder to find exhaust valves

|

10/5/2015 7:35 AM

Manny555 wrote:

So just use oem cause ive also lookes at the xcledyne ss valves which advertise that are just as good as ti. And what about ...more

I have no idea what valves your talking about. I'm a two stroke guy. But to be entirely honest, why on earth would you spend like 700+ $ on titanium valves on a completely stock bike. You'd honestly be so much better of buying a slip on pipe and oversize front rotor and using the lest over cash on tires clutch plates etc then you would be putting 4 titanium valves in a bone stock motor. Just my two cents.

But it is your money. Spend it how you want.

|

10/5/2015 7:40 AM
Edited Date/Time: 10/5/2015 7:49 AM

Manny555 wrote:

So just use oem cause ive also lookes at the xcledyne ss valves which advertise that are just as good as ti. And what about ...more

dbrunski125 wrote:

I have no idea what valves your talking about. I'm a two stroke guy. But to be entirely honest, why on earth would you spend ...more

My valves are completely shot so my bike wont start and the valve set with springs and retainers are like 200 bucks for the intake side.

|

10/5/2015 7:50 AM

Oem is your best bet

|

10/5/2015 7:04 PM

Oem is always a safe bet. DelWest titanium valves are the best you can get but I don't know what your price range is or your usage. Stay away from any kind of aftermarket Stainless Steel valves, the added spring pressure and harder material pounds the camshaft to death and the valve is heavier so it also makes the bike rev slower and not as high. If you are going to be replacing the valves at all you will need to at least have the valve seats re-cut otherwise those new valves that you spend all the money on are not going to last very long. If you want the economical package that will last and perform reasonably well, just put in oem valves but make sure you have the seats cut otherwise you are wasting your time. If you want something that will be just about bulletproof but will not have the downsides of stainless valves, send your head to Millennium Technologies with your new oem valves and have them make new softer valve seats matched to your specific valves.

|

10/5/2015 7:25 PM

FRANZINI499 wrote:

Oem is always a safe bet. DelWest titanium valves are the best you can get but I don't know what your price range is or your ...more

By cute you mean lap them with grindinf compound right?

|

10/5/2015 7:30 PM

Yeah, it should be done by a professional using diamond cutters and some lapping compound

|

10/5/2015 8:01 PM

FRANZINI499 wrote:

Yeah, it should be done by a professional using diamond cutters and some lapping compound

Alright sweet and ive been thinking about doing the piston and chain too. Can I get to the chain without splitting the case

|

10/5/2015 8:10 PM

Do not lap them with grinding compound! Especially the titanium ones! You need to have the valves cut. If the seats are shot which they probably are given you went as long as you did. Have copper beryllium seats installed and then cut.

|

10/5/2015 8:13 PM

Yeah you just have to remove cams the ignition cover and stator, then take off the flywheel and you will see there is a little gear there on the crank with the chain on it. And for a piston and chain I would not put anything other than OEM in it, the stock compression ratio is 13:8:1 and any aftermarket piston that is over that ratio you will have to run race gas.

|

10/5/2015 8:16 PM

jhansen510 wrote:

Do not lap them with grinding compound! Especially the titanium ones! You need to have the valves cut. If the seats are shot ...more

Yes I agree, your best bet is to have copper beryllium seats installed and matched to new oem valves or DelWest titanium valves. They will not only make your valves last longer but will increase power. Also they will eliminate any chance of the valve seats falling out of the head due to the expansion of the beryllium is faster than the aluminum head so the fit actually gets tighter when heated up instead of the opposite with the stock steel seats.

|

10/5/2015 8:29 PM

BC seats are nasty. Very nasty material to work with.

|

10/5/2015 8:48 PM

WileCyot wrote:

BC seats are nasty. Very nasty material to work with.

Yes, it is true. And I believe beryllium is the only or one of the only toxic metals, but only if inhaled or ingested in dust form is it deadly. But the copper beryllium seats are usually only 1-2% beryllium and 98-99% copper so the chances are very low, and it is the absolute optimal material for valve seats. That is why you leave that job to the trained professionalswink

|

10/5/2015 8:53 PM

How much does it cost to get the seats in the head

|

10/5/2015 9:05 PM

Everything ive been looking atPhoto

Photo

Photo

Photo

Photo

|

10/5/2015 9:21 PM

That oem top end kit is exactly what you want. As for the valves, I would go with the xceldyne kit if you cannot find anything from DelWest. I would stay away from the Kibblewhite ones, the Wiseco's would be ok but what you are looking at there is just a single valve and would have to source springs, retainers, etc. elsewhere. If you are considering putting BeCu seats in, I would strongly suggest talking to someone over at Millennium Technologies. They do some great work, and remember if you do decide to send the head to them I would send them the valves as well so that they can custom match them to your specific valves and it will come back spot on perfect.

|

10/5/2015 9:26 PM

I will for sure call the or email them. And the only thing with those xceldyne valves is they are not titanium they are stainless

|

10/5/2015 9:38 PM

Ok, then stay away from those and find some that are titanium. Worst case scenario just buy a set of stock valves, using them with the BeCu seats they will last a lot longer than on the stock seats and will be a much less expensive option, but some good quality one piece TI ones would be ideal.

|

10/5/2015 9:40 PM

Would it be bad if I run the becu seats on the intake and stocks on the exhaust?

|

10/6/2015 8:37 AM

No, that would be just fine. If your exhaust valves and seats are within spec then I would just take them out and clean the ports and valves and then reassemble.

|

10/6/2015 8:43 AM

Sweet thanks mam you guys gave been so much hell

|

10/6/2015 8:45 AM

No problem! Always happy to help out!

|

10/6/2015 7:09 PM

Has anyone ran the xcledyne ss valves?

|

10/6/2015 10:12 PM

DO NOT RUN SS VALVES! It is harder on the valve train due to the heavier weight of the steel. It will also make your bike rev slower! Nothing about MX is cheap. Do not pinch pennies on the head work or valves/parts or you will be upset with the outcome. Doing it right the first time is cheaper then saving money and having to redo it sooner then you should/would have to.

|

10/6/2015 10:16 PM

jhansen510 wrote:

DO NOT RUN SS VALVES! It is harder on the valve train due to the heavier weight of the steel. It will also make your bike rev ...more

I agree 100%!!!!

|

10/7/2015 10:56 AM

seriously? Manny Rodriguez? man I totally made than name up, if she comes looking for you just say you promise you are coming back you just don't know when. sorry bro


|

10/7/2015 11:01 AM

Missing_Muffs wrote:

seriously? Manny Rodriguez? man I totally made than name up, if she comes looking for you just say you promise you are coming ...more

Huh? What are you talking about

|