I have a Godzilla BOV on my 2003 Honda S-2000 equipped with a Comptech SC. When running at constant RPMs in any gear, I get a very loud chirping noise. The sound is like a bearing going bad. If I give a little throttle (i.e., a little boost), the sound stops. When under high boost, there is never any sound. It also seems the chirping is louder when the air is hotter (I am running an innercooler).

When I was running a low boost pulley, I ran the blowoff back into the engine. However, once I went ot higher boost levels and added the Godzilla BOV, I got the loud chirping sound. Friends can hear it three cars back.

My question: is the Godzilla BOV adjustable so as to provide more relief capacity? If so, can you explain how to adjust the spring? Is adding more relief even the answer?

Maybe the chirping sound is not from lack of blowoff capacity. Anyone have experience with this issue?

 

Bill, you may try asking this in the Forced Induction forums for a good response.

https://www.s2ki.com/forums/index.php?showforum=142

 

Ifyou are under throttle and not letting off te BOV has nothing to do with it. ore likely the belt or like you said the bearings.

Bring it buy S&R and have us take a look at it.

Jeff

 

Thanks for the comments. I will try the other group for a response.

Jeff, the"chirping" is when I am not under any throttle; it is when I am running a constant RPM/speed. When I give it any throttle, the chirping stops immediately I checked the belt and tightened it but to no effect.

The chirping started the first day the Godzilla BOV went onto the car......I will try to get to S&R ASAP. Thanks....

 

Awe! now that is different. Unless you changed something else then I would guess it would be the BOV letting a little boost past when it shouldn't.

Did you change the vacumn source?

 

shouldn't it be a bypass valve??? try adjusting? sounds too tight my 99 si with a vortech wouldnt make much noise till i gave it SOME throttle, then it would whistle. then a lil more would make it quiet. but if it was too tight it would just whistle...loosen it up, let the air flow smoothly till you apply vacuum.


it should be flowing air!

 

Jeff, I do not know if the source of vacuum was changed but I would bet it was. Work was performed by 2NR Werks. As I said, the minute the BOV was added, the chirping started. Also, I note I can never get the boost I got before. I was getting up to 9 to 9.5 lbs; now I am lucky to get 3.

Also the sound is nothing like a whistling; it is a loud, hard chirping noise, much like the sound of a bearing going out.

By the way, I found the oil leak while in NC and had it fixed.

The car is still in NC due to a family emergency that brought me home fast. When I get the car back here the end of May I will call Bobby and bring it over to S&R. Thanks for the comments.

 

"I got loud pterodactyl sounds on my other supercharged car (mp62 roots hybrid blower) and the cause was either a loose belt or a bad pulley tensioner."

The above is the comment I got when I placed the question on the forced induction site. I know the belt was not loose as I had it tightened in NC.

As for the tensioner, ????????

 

actually i have the same sound and i am not SC...