How high do you guys rev your 5SFE? Options

[Projek_01]

I am new to the 5SFE and I noticed this motor has very low end power. What range of RPM could I be reving to still keep my motor reliable? I am afriad to rev to 6k RPM because this motor has such a long stroke.

[Batman722]

my dyno sheet compared to a stock 5s.


I can shift up to redline with my cams (webcams) and I gain more hp and maintain a substantialy higher amount of torque than a normal 5s (about 15hp and 20ft lbs of torque more).
On a normal 5s after 5k rpms the hp has already peaked and is going down down and the torque has been dropping like a rock since 4300 rpms. Not me anymore...hehe

You would have to remove the timing belt to replace the cams and since you're in there you might as well replace the T belt, tensioners, and the water pump too. You also have to re-shim the valves to the acceptable clearances due to the different size lobes of the cams.

This post has been edited by Batman722: Jan 18, 2008 - 12:22 AM

[Celicav]

my dyno sheet compared to a stock 5s.


I can shift up to redline with my cams (webcams) and I gain more hp and maintain a substantialy higher amount of torque than a normal 5s (about 15hp and 20ft lbs of torque more).
On a normal 5s after 5k rpms the hp has already peaked and is going down down and the torque has been dropping like a rock since 4300 rpms. Not me anymore...hehe

You would have to remove the timing belt to replace the cams and since you're in there you might as well replace the T belt, tensioners, and the water pump too. You also have to re-shim the valves to the acceptable clearances due to the different size lobes of the cams.

Anything else required or recommended when you do the webcams? Does the car have to be tuned in any way? I am seriously entertaining doing this. I may PM you later about it.

[presure2]

my dyno sheet compared to a stock 5s.


I can shift up to redline with my cams (webcams) and I gain more hp and maintain a substantialy higher amount of torque than a normal 5s (about 15hp and 20ft lbs of torque more).
On a normal 5s after 5k rpms the hp has already peaked and is going down down and the torque has been dropping like a rock since 4300 rpms. Not me anymore...hehe

You would have to remove the timing belt to replace the cams and since you're in there you might as well replace the T belt, tensioners, and the water pump too. You also have to re-shim the valves to the acceptable clearances due to the different size lobes of the cams.

Anything else required or recommended when you do the webcams? Does the car have to be tuned in any way? I am seriously entertaining doing this. I may PM you later about it.

nothing other than re-shimming is "required" to do the cams.
in theory, you could just loosen the t-belt tensioner, (after marking the cam gear and belt for proper alignment afterward) pull out the cams and replace, re-tension the belt, reshim, and off you go.
everything else dustin added is all a good idea, tho, since most of our cars will have over 100K+ on them, most dont know the last time the t-belt or any of that stuff was done, and trust me, the least amount of times you want to work on that side of the motor is where you want to be. lol
if you go that route, i would also suggest doing the cam seal as well.