Fcr 39 or edelbrock?

[twincat800]

i have both but which would be better. the edelbrock might be only a 36mm.

[bellzbub]

they are both a little touchy to tune but bang for the buck is the fcr. it will not help much without supporting mods though.

full pipe,intake,cams and a big bore all are supported by the fcr. eddy is the same it should be a 38 mm if it is for a z400.

if the mods are not on, a good tune on the stock carb is the best way to go.

[twincat800]

ive got k&n, cams, rev box, slip on, drz kit. I have both the edelbrock carb and fcr39 carb because i got both for cheap. now i wana know which one would be best.. the edelbrock is actually 34mm by 38mm... so if it were a perfect circle it would actually be a 36mm carb.

[jonboy]

Get a full pipe and do away with the airbox completely and use the FCR with the ESR airbox eliminator intake kit. Then tune it in and you wont be dissappointed.

[twincat800]

i am working on getting looney tuned dual exhaust with headers, but i would never get rid of my air box... i had planned on using the fcr carb so i got boots for it on the way in the mail i think the 450r boot, but i got a deal on a 513kit and an edelbrock carb. even though i still dont know if im going to install the 513 kit i just wanted to know what would be best for me carb wise, i hear the eddy would be easier to tune. Just wondering what peoples opinions are because im sure no one has tried both the eddy carb and fcr39...

[bellzbub]

actually i have tried both, the eddy was a bear to tune but once it was right it ripped. the fcr 39 was easier to tune but i did my tuning on a dyno with that one. that said the fcr is in my opinion the way to go. i have had no problems what so ever with the fcr after it was tuned.

with my mods it was in my best interest to run the 39, i had a fcr40 that was bored to 42 with a ct sonic pipe. it made 52 hp on the dyno but was all up top. with the 39 and the yosh rs-3 full it is at 47 hp but it is more bottom to mid with a decent top end. i run harescrambles so i do not need a top end motor for tight woods racing.

the fcr also made about 4hp more on the dyno when tuned. the eddy was just not big enough for my mods.

[twincat800]

okay that pretty much made my decision. I paid 250 for the eddy, a bare head, and what was said to be a 513piston and cylinder, so hopefully ebay will give me a little extra money... do you know what jets your running, to give me somewhere to start out with?