***VID ADDED AT BOTTOM***

Ok, I'm running a Turbo XS RFL on my Turbo'd D16 pushing 6 PSI. I know the valve is designed for 10+ psi, BUT... I'm running it without any preload springs, so it's as soft as can be, but it will only "blow off" if I give it like 3/4 to full throttle and let it build up pretty decently. I always see people revving and their BOV will go off, but I don't care how high you revved my car, it would never blow off on idle. My question is, is that normal?? SHOULD it be blowing off at idle/ low rpms? Because sometimes at like 2.5-3k rpms, I'll shift and I still hear a little compressor surge. The vaccuum hosing coming off the top of the nipple on the BOV is a bit too small diameter, would that be causing this? Thanks in advance for any insight.


Modified by MiKeAhOwSkI at 11:52 PM 12/25/2003


Modified by MiKeAhOwSkI at 12:24 AM 12/26/2003

 

When i had my SOHC kit I couldn't blow off unless I revved it up to around 5 grand. Are you intercooler? There was a big difference in blow off between when I wasn't running an intercooler and then when I was.. After the intercooler I blew off way louder and the BOV would flutter when I shifted between 3 and 4 grand.

 

I have a rfl as well but it has yet to be put on my car. The spring that comes in it seems to be pretty damn tough, so here is what I was thinking either A) Get a diffrent spring from the hardware store so you wouldnt have to boost so much for it to blow off or B) cut the spring that came in the rfl which would cut down on the tension on the piston inside the bov making it easier to blow off. I think that either of the ways would work fine, I just have to decide which way I am going to go.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tolowhb &raquo;</TD></TR><TR><TD CLASS="quote"> I have a rfl as well but it has yet to be put on my car. The spring that comes in it seems to be pretty damn tough, so here is what I was thinking either A) Get a diffrent spring from the hardware store so you wouldnt have to boost so much for it to blow off or B) cut the spring that came in the rfl which would cut down on the tension on the piston inside the bov making it easier to blow off. I think that either of the ways would work fine, I just have to decide which way I am going to go. </TD></TR></TABLE>


Ummm, I've seen one of these BOV's first hand and the spring is actually not that strong... In fact it's pretty weak... You can easily push the bottom of the BOV and make the spring compress with your hands...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jz &raquo;</TD></TR><TR><TD CLASS="quote">or you can just buy a bov to where you dont have to do all of that work.</TD></TR></TABLE>

Yeah but if I already have the bov then oh well. And its not much work.

Anyways doesnt it make sense that if you modify the spring that it will be able blow off a bit more easily than just using the stronger spring?

 

Thats what I am hoping to find out. I am not totally sure which sucks. But I think it would work.

 

Good news...I just cut the spring, and it lets off at low rpms, and at a 6000 RPM rev very faintly. I cut off about 3-4 coils. It now lets off, instead of a Big loud burst at high boost, a deep and sorta dragged out sound throughout. It sounds Nice though, I'll try and get a Vid clip of it later.

 

Sweet! So it worked then? Is it still fairly loud? And let me know when you get that video clip up!

 

Here's the video... and yes I know it's super dark, you're only watchin for the sounds(if that's possible)

anyways, here ya go ~5 megs
http://www.we-todd-did-racing....DE%3D

 

feels the same to me still boosts 6 psi...


Modified by MiKeAhOwSkI at 12:11 AM 12/26/2003

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jz &raquo;</TD></TR><TR><TD CLASS="quote">i dont know if that was a good idea for you to do that. correct me if im wrong but the spring plays a roll in keeping the valve closed while in boost. so you most likely made your car slower by bleeding off boost. </TD></TR></TABLE>

But whats cool about the RFL is you could add more washers to increase the spring strength, so if he were to boost higher i'm pretty sure u could add more washers (makes the spring more compressed) to fix any boost leakage

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VNTEC &raquo;</TD></TR><TR><TD CLASS="quote">

But whats cool about the RFL is you could add more washers to increase the spring strength, so if he were to boost higher i'm pretty sure u could add more washers (makes the spring more compressed) to fix any boost leakage</TD></TR></TABLE>

True True... and for the record, right now, as-is, it isn't leaking.