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Discussion Starter · #1 ·
Alright guys here's the deal. I gotta put a new head and cams on my LTR cause the cam journals are worn and so are the cams. now here's the wuestion do i need to replace the valves and springs too? My buddy told me i could plug one end of the head and put a flashlight in the other and if no light shines through the valve seats that i could run em and they would be fine. What do you guys think, anyadvice would be appreciated.
 

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your gonna need to seat the valves. you have to do that anytime when you get new valves or get a new head and use old valves. its realy simple. just go to a auto parts store ask for the finest lapping compound. its a liquid with find bits of sand in it or something like that. and ask for the valve lapping tool. its a little plunger thing that you put on the flat part of the valve and you put the vapping compound on the head and the part of the valves that seal in the head. and you spin the valve in the head and it makes the vvalve seat pefectly. it take alot of time but it works and dont have to pay big bucks to have some one do it.
if you dont understand this im sorry i typed it on my ipod touch and trid making it short but i can re-explain it when i get home
 

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Affordable Go Karts - Valve Lapping
i know that they are go karts they are doing the valves on there but it is the same thing. its easy just takes some time.
you will need
laping compound
valves tool to lap valves
i used brake cleaner to clean the lapping compound and rinced the head out with that and then oil
 

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Discussion Starter · #4 ·
Thanks guys i really aooreciate it
 

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you do not lap ti valves

and if you get lapping compound from an auto parts shop it is like 120 grit
that is the worst thing to do on a new valve

take it to a good shop and have them look at it

if it a new head and new valves you should be able to put it togerther
with out doing anything to it

do not lap the valves it will destroy the valve
 

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you do not lap ti valves

and if you get lapping compound from an auto parts shop it is like 120 grit
that is the worst thing to do on a new valve

take it to a good shop and have them look at it

if it a new head and new valves you should be able to put it togerther
with out doing anything to it

do not lap the valves it will destroy the valve
my buddy who worked at a atv/dirtbike shop is the one who helped me with mine and thats how we did it and mine still are fine. its a easy way t do it at home with out spending big buck to have a machine do it. thats how they did it befor they had the machines to do it too
 

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you can do what you want to do it is not a good idea to lap a ti valve
in your sig you have kibble white valves thay are stainless steel

a stainless steel valve can be lapped but you use 320 grit or finer lapping compound

jfaubus ask for advice on his new head and valves
it is not good too lap a ti valve

i own a shop and have worked on atv and motorcycle engines for
20+ years

if you lap a ti valve it will take the coating off the valve witch will
dramaticlly shorten the life of the valve

the best advice i can give is if the head and valves are new is
put them together as they are they are new seats and valves
it will work and it will last
 

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i keep forgeting these thing have TI valves in them. lol
so yeah laping would be bad for them. sorry mad bad.:sad6:
 

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Discussion Starter · #9 ·
Hmm i thought the YFZ was the only one that came stock with titanium valves
 

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Nope...the LTR has oem Ti valves.
 

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take the valves out of the old head and go through the specs.. The are many checks to do on the valves. If they check out ok, use them but don't lap them in. If you go with new ss valves, lap them. I'd take the time to see if my stock Ti valves were in spec first. Just my opinion.
 

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2006 ltr 450
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you can do what you want to do it is not a good idea to lap a ti valve
in your sig you have kibble white valves thay are stainless steel

a stainless steel valve can be lapped but you use 320 grit or finer lapping compound

jfaubus ask for advice on his new head and valves
it is not good too lap a ti valve

i own a shop and have worked on atv and motorcycle engines for
20+ years

if you lap a ti valve it will take the coating off the valve witch will
dramaticlly shorten the life of the valve

the best advice i can give is if the head and valves are new is
put them together as they are they are new seats and valves
it will work and it will last
 

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2006 ltr 450
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Combining a new head with new valves doesnt require any further machining of any kind? The valves will seat properly in the head as is? I ask because this may be a possibility for my repair on my 06. Thank you take care!
 
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