FCR39 ... anyone do this or try this carb
FCR39 ... anyone do this or try this carb
as above guys anyone ever use or try an FCR carb ? comments please
ta
oggo
ta
oggo
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- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm
If you've got one laying around,try it out. I put a Mikuni TM flat slide on a XR600 (two stroke carb) . I dont know if a 4 stroke specific carb would be backwards compatible on the two stroke though.
"A good friend will come bail you out of jail, A TRUE friend will be sitting next to saying, DAMN THAT WAS FUN"
- britincali
- Posts: 8207
- Joined: May 31st, 2007, 7:10 pm
- Location: Barstow, CA
so i take it nobody ever bored out the PWK carbs ?AlisoBob wrote:1. Its 39mm...... Whoop-de-doo.
2. It has an accelarator pump that you dont need.
3. Its incredibly short, intake to outlet. It will be hard to fit.
4. It takes an entirely different throttle assembly.
5. It isnt cheap ( $$$$)
point taken on acclelartor pump , my only concern really
i will offer one up , point taken on overall length , but a K&N will be on the inlet , so only outlet is a concern , they go for about 150 quid over here , but as i mentioned i can get a loan of one to try .... reason iwant to find out is they are very simple to set up .... ta for the pointers alisobob
- redrocket190
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- Location: San Clemente, CA
- dannygraves
- Posts: 8020
- Joined: June 1st, 2007, 2:03 pm
- Location: Las Vegas, NV
PWK is the shiz! if I build another fast bike, pwk 41mm all the way if I'm sticking to gas. Although I really like my mikuni tm41pro and it obviously has some seriouse engineering and technology packed into a very finely built carb... its just a bear to dial in. I had noticeble gains switching to mikuni from a pwk 39, but the pwk39 started 1 kick and was far less tempermental on tuning. I got my mikuni running tits now after an exhaustive amount of tuning... but still takes 3 kicks to start everytime... kinda weird.AlisoBob wrote:Nothing is simpler than a Kehein PWK
'09 kx450f 4-Poke
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
mmmmm .... read down till u see twin carbs , FCR's ...
http://www.twostrokeshop.com/two_stroke ... es.htm#eng
http://www.twostrokeshop.com/two_stroke ... es.htm#eng
"We have adapted Keihin FCR semi-downdraught carburettors for two-stroke use; employing custom emulsion tubes and jets ... making them harder to tune spot on but ultimately, a more accurate metering device."
Yea... just what I want on my dirt bike.... A 38mm carb ( like stock).. but it takes custom, expensive parts.. and its a bitch to tune.
Sign me up!
Yea... just what I want on my dirt bike.... A 38mm carb ( like stock).. but it takes custom, expensive parts.. and its a bitch to tune.
Sign me up!
- dannygraves
- Posts: 8020
- Joined: June 1st, 2007, 2:03 pm
- Location: Las Vegas, NV
my mikuni is a bitch to tune but ran noticeably better after I got it dialed in. of coarse, the size and powerjet were the biggest differences and would have been the same if I used a 41 pwk and a powerjet.
the FCR seems pointless to me.
the FCR seems pointless to me.
'09 kx450f 4-Poke
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
- britincali
- Posts: 8207
- Joined: May 31st, 2007, 7:10 pm
- Location: Barstow, CA
- dannygraves
- Posts: 8020
- Joined: June 1st, 2007, 2:03 pm
- Location: Las Vegas, NV
reason i put it up is that peeps were adamant it would not work .... well it does , oh and they dont come in 38mmAlisoBob wrote:"We have adapted Keihin FCR semi-downdraught carburettors for two-stroke use; employing custom emulsion tubes and jets ... making them harder to tune spot on but ultimately, a more accurate metering device."
Yea... just what I want on my dirt bike.... A 38mm carb ( like stock).. but it takes custom, expensive parts.. and its a bitch to tune.
Sign me up!
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- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm
100hp honda wrote:i dont think anybody had intenstions of crushing your dreams of making that carb work, everyone just asked "why". i cant make sense of everyones ideas, and everyone cant make sense of mine . if it works then good on ya
i dont have dreams i simply asked if anyone has tried it , and i suppose "why" would TSS do it ? , taking into account these boyz seem to know exactly what they are at . i will look into properly when i am at that stage of my build , i could report "complete waste of time" or a result ....
but my point of refreshing the topic was it does work