- Joined
- Nov 23, 2020
- Messages
- 373
Hello fellow BITOG friends are there any motocross engine guys on here or anyone who can share some info on a build I am doing for my sons race bike .......
The quick info and if anyone can relate or chime in I would be most thankful and then I can go into much greater detail if need be
2013 CRF250R had bike since new I rode it about 15 hours following my son around when he was on 50s and a little when he was on 85s
Now that he has moved up to 250s and a pretty solid rider with consistent improvement and the suspension valved and sprung we are looking to gain some HP to keep up with the kids who have brand new bikes and dads with deep pockets
With 140 hours total we have adjusted the valves one time and on the last tear down the feeler Guage tolerances were not in spec and took far too thin a Guage to slip in so I took it apart
Del West titanium valves exhaust and intake about $600
Hot Cams stage 2 $300 ish
Took it to a trusted shop who of course has to have the head sent to Cali for the machine work by " one of the best in the country "
We discussed my concerns and what I felt I wanted and the price was really not too concerning within rational reason
My ask list
My titanium valves with copper beryllium seats and the proper angles cut in the new seats
My stage 2 Hot Cams to be considered in the equation
Port/polish clean up (Quoted aprox $400) ....if it's legit no problem I say
.......3 months later after my guy keeps getting the run around about my head ( death in the family ) ......( running behind ) ....... ( broke down equipment) ........ ( Lorettas is coming up I have important builds that MUST BE DONE).....basicall stall and excuse bankrupt I finally am going to pick my head up Friday supposedly
My guy proceeded to tell me now the shop just ground my existing factory Honda valve seats because they said I didn't need them replaced ????....... mind you this has 15 hours cream puff and about 125 hours consisting 20 good local hard motos on it including practice sessions
Then said that my Hot Cams stage 2 would be a downgrade to the factory cam and that only a PC cam ( pro circuit) is worth putting in these bikes ??????....... I have to call B.S. on that one as well
I guess I will see what I get on Friday I'm expecting a let down
Aren't copper beryllium pretty much a must for titanium valves or is this not correct ??
I can't believe that that many hours and the old seats and guides aren't toast am I wrong ??
I am putting my stage 2 cam in and checking clearances anyways after all its my bike how can his clain this is a step backwards overall am I wrong ??
Guess I will see what I get when I pick it up
If I'm not satisfied who do you guys use for real head work on motocross race bikes
Thanks friends
The quick info and if anyone can relate or chime in I would be most thankful and then I can go into much greater detail if need be
2013 CRF250R had bike since new I rode it about 15 hours following my son around when he was on 50s and a little when he was on 85s
Now that he has moved up to 250s and a pretty solid rider with consistent improvement and the suspension valved and sprung we are looking to gain some HP to keep up with the kids who have brand new bikes and dads with deep pockets
With 140 hours total we have adjusted the valves one time and on the last tear down the feeler Guage tolerances were not in spec and took far too thin a Guage to slip in so I took it apart
Del West titanium valves exhaust and intake about $600
Hot Cams stage 2 $300 ish
Took it to a trusted shop who of course has to have the head sent to Cali for the machine work by " one of the best in the country "
We discussed my concerns and what I felt I wanted and the price was really not too concerning within rational reason
My ask list
My titanium valves with copper beryllium seats and the proper angles cut in the new seats
My stage 2 Hot Cams to be considered in the equation
Port/polish clean up (Quoted aprox $400) ....if it's legit no problem I say
.......3 months later after my guy keeps getting the run around about my head ( death in the family ) ......( running behind ) ....... ( broke down equipment) ........ ( Lorettas is coming up I have important builds that MUST BE DONE).....basicall stall and excuse bankrupt I finally am going to pick my head up Friday supposedly
My guy proceeded to tell me now the shop just ground my existing factory Honda valve seats because they said I didn't need them replaced ????....... mind you this has 15 hours cream puff and about 125 hours consisting 20 good local hard motos on it including practice sessions
Then said that my Hot Cams stage 2 would be a downgrade to the factory cam and that only a PC cam ( pro circuit) is worth putting in these bikes ??????....... I have to call B.S. on that one as well
I guess I will see what I get on Friday I'm expecting a let down
Aren't copper beryllium pretty much a must for titanium valves or is this not correct ??
I can't believe that that many hours and the old seats and guides aren't toast am I wrong ??
I am putting my stage 2 cam in and checking clearances anyways after all its my bike how can his clain this is a step backwards overall am I wrong ??
Guess I will see what I get when I pick it up
If I'm not satisfied who do you guys use for real head work on motocross race bikes
Thanks friends
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