question about a 400ex motor
#1
01-19-2004, 03:04 AM
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question about a 400ex motor
I have a 02 400ex with white bro pipe K&N if I just add a cam say stage one hot cam with stock bore 11:1 piston new have the head ported and flowed will I be able to keep up with the newer 400z kxf400 as well is the stage one what I want what is the difference from the 1 to the 2 stage I want to stick with the stock bore to keep money down and reliability up run cooler as well. thx's for your input need help first honda I ever owned to put motor work in.[img]i/expressions/face-icon-small-blush.gif[/img]
#2
01-19-2004, 10:55 AM
#3
01-19-2004, 10:56 AM
question about a 400ex motor
If you are going to go with a hi-comp piston like that, you should go with a stg 2 cam
Hi compression will build more power down low and the stg 2 will provide the over rev you need
Stg 1 cams are usually used for building low-mid range power
And stock valve springs are fine with a stg 2.. i have been using my stg 2 with the stock springs for about 70-100 hours now and no worse for the wear.
If you were going to build an all out rev machine, then i could see the use for h/d springs. But with a rev around 10,000 and not being there constantly, there is not much of a problem with valve float
With you 11:1 stock bore and eithr cam though, you should have no problem with a stock z/kfx
Hi compression will build more power down low and the stg 2 will provide the over rev you need
Stg 1 cams are usually used for building low-mid range power
And stock valve springs are fine with a stg 2.. i have been using my stg 2 with the stock springs for about 70-100 hours now and no worse for the wear.
If you were going to build an all out rev machine, then i could see the use for h/d springs. But with a rev around 10,000 and not being there constantly, there is not much of a problem with valve float
With you 11:1 stock bore and eithr cam though, you should have no problem with a stock z/kfx
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