after market Raptor carbs
#4
I have worked with the Edelbrock carb on a 400ex and, in my opinion, it is a no go.
Bikeworx has a single carb set up that seems to run fine. However, in my tests, the single provides more bottom end torque but less top end hp or rpm.
On the duals, for the money, just refine teh stock CV's. Powroll, CT, Trinity and a few other shops have made manifolds to run the Kehin FCR's (35-39mm) but the cost, improper fit and lack of any real benefit makes it a possible no go. Remember, the head only flows about 280cfm max on the intake. Your stock CV's easily flow that amount. The big FCR's are dificult to tune and, as I discovered, require a major time to get the jets and needles correct. Besides, even the 35mm FCR's flow substantially more than your cylinder head. The problem with the over flow is that you will loose air speed and torque for the slight top end hp gain.
Bikeworx has a single carb set up that seems to run fine. However, in my tests, the single provides more bottom end torque but less top end hp or rpm.
On the duals, for the money, just refine teh stock CV's. Powroll, CT, Trinity and a few other shops have made manifolds to run the Kehin FCR's (35-39mm) but the cost, improper fit and lack of any real benefit makes it a possible no go. Remember, the head only flows about 280cfm max on the intake. Your stock CV's easily flow that amount. The big FCR's are dificult to tune and, as I discovered, require a major time to get the jets and needles correct. Besides, even the 35mm FCR's flow substantially more than your cylinder head. The problem with the over flow is that you will loose air speed and torque for the slight top end hp gain.
#5
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)