The crank pulley doesn't like a ton of tangential pull.
That's a quick path to a front seal oil leak and bearing damage.

 

Hmm. I have a mechanical boost guage and have had slippage before. It looked like the needle kept hitting an imaginary wall and would bounce back and forth at a high rate of speed. This happened around 7k rpms.

Another time the car wouldn't make above 5psi of boost. The belt had @1k miles on it and had stretched so much, it needed to be retightened.

 

I am hip, Baby. That's why I am...........

 

How did you redo the adjuster?

 

Did you hear any unusual sounds with either issue?

 

Dare I say it, but I hope you don't need to go and pick up the bits...

Cheers,
Hymee.

 

Certainly hope not. What makes you think that it is something along those lines? Doesn't seem to have any issues other than what I described. Must admit after the detonation last week it is something I'm worried about.

 

Ouch - You mentioned the D word...

Regards MM's comment on the front pulley, which is good advice - and please fill me in - but is there an additionally pulley on this setup like I had in my first 2 prototypes?

Cheers,
Hymee.

 

Any pix of the first two protos?

 

Hmmmm...sounds like you guys are having the same problems I had with my last ride. I had a jackson racing sc on my 02 Civic Si. I went thru 3 belts (chewed the teeth right off) and several weird noises in less than 6 mos after the install. Once I removed the kit I discovered the main noise was coming from the alt pulley. Cranking down on the tensioner to tighten the belt caused excessive wear on both the alt pulley and tensioner. I noticed very fine shavings on the back side of both pulleys.

 

As I mentioned last week I had two issues that I believe caused itb and now am just hoping to not have any lasting issues from it.

The car ran really strong Saturday and now having some issues that I need to sort out.

 

No unusual sounds. It just felt like the car was hitting a wall everytime @7k rpm.

 

This setup doesn't run the alternator. There is a "crank", tensioner, and blower pulley. You're right about cranking down on the tensioner causing excessive wear. I noticed definate wear from slippage on my belt after a few thousand miles. I don't crank down on mine near as much as everybody else (probably why I only see 7.5lb on my boost gauge), because i'm worried about chewing through the belt.

 

Here is how I check the tension on my SC belt. Grab the bottom part of the belt (looking at the SC pulley it will be the section of the belt that goes from the SC pulley to the engine eccentric crank pulley) halfway from the SC pulley to the crank with your thumb and index finger. Now, try to bend the belt 90 degrees. If is over 90 then it is to loose and if is less, it is too tight. Basically, adjust to where you can twist the belt 90 degrees.

I had to adjust my belt several times the first few hundred miles but now I hit 8.3 psi per my digital booster gauge.

See my 8.0 psi youtube video.

http://www.youtube.com/watch?v=2uwNcDxnOLo

 

8.3 eh? At what rpm do you see that?

 

Don't know since I can't keep my eyes looking at the boost plus rpms plus in front of me. Basically it is an old habit of mine after many years of riding crotch rocket bikes. I like to keep my eyes on the road and not on the dash. The rpm range of my Hayabusa and the RX8 are not so much to my concern. I’ll try to take some videos on Friday and will post the youtube link on Saturday.

 

Good test Marsredr. And that is what i can do when the lateral movement on my belt is approx 1/4 inch.
very familer on bearings loads caused by too snug of a belt. Not just the front bearing but also the alternator, the front of the s.c. and the water pump.
Always test the tension on the longest part of a belt. Always make sure your alignment is good also--dont laugh I have seen things you could not even imagine.

Dog I had to make a slightly longer bolt for the s.c. tensioner. Worker well for me.
I think CRH may be getting something that will let us run a wider belt?
olddragger

 

Yeah Juan.............let's not hit a 12 foot Gator while trying to see what RPM and boost you are at.............okay?




Dave

 

I think it has more to do with your digital boost gauge; My boost gauge never saw 7PSI with the long tiny plastic feed hose, but when they hooked up a larger boost gauge during my dyno run it hit 7.5 PSI at 8K.

 

Boost numbers can vary a great deal depending on where the other end of the vacuum hose is hooked up to. You guys using the same source?

 

You so funny

 

My feed tube is located just before the lower intake and hooked up with the original digital gauge kit hardware.

Pat, does the EFIdude capable to register boost levels?

 

I have Phil's in the same spot as Juan has his but I have been getting some weird boost readings. I am going to check the harness and such next time I am in LV. Juan, do you have a boost-only gauge?

 

How much oil does the Pettit blower hold, and has anyone came up with a good way to change it?

I have a leftover quart of Royal Purple XPS and wonder if it should go in the blower.
(No, it is in my bike, not in my rotary)

 

Doesn't Pettit publish that info in their kit manual? I can't remember how much but I am sure somebody will simply tell you to use the blower case dipstick to check.