Well i really just noticed this from the pictures i took at nopi '06. Looks like a wastegate as a BOV, never seen this before but i suppose it works..i mean they kinda work the same way.

 

Can't link a pic off your desktop or something like that it needs to be hosted online like in photobucket or something similar

 

Modified by RedEj8 at 3:27 PM 1/24/2007

 

damn i walked right by that car and i didnt even notice that ****. kool.

 

wow thats interesting ...

 

interesting....wouldnt see why it wouldnt work. i wonder if the side port its routing into the i/c piping or not

what is that thing anyway???

 

dual intercoolers tambien. i guess he wanted the best of both worlds (one air, one water)

 

i guess he needed something that would stand upto pressures as high as exhaust manifold pressures, and what beeter solution than something designed for just that, a WG.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zeimbo &raquo;</TD></TR><TR><TD CLASS="quote">dual intercoolers tambien. i guess he wanted the best of both worlds (one air, one water)</TD></TR></TABLE>

I beleive thats a radiator.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rudebwoy &raquo;</TD></TR><TR><TD CLASS="quote">I beleive thats a radiator. </TD></TR></TABLE>

yeah LOL, you beat me to that comment dammit but actually i think hes using it as a heat exchanger. Most meth cars dont run a radiator.

i wonder what that BOV "Sounds like"


Modified by SPOOLINmatt at 4:44 PM 1/23/2007

 

I actually saw that recently in the news stand...forgot the name of the magazine. It was about a full race Scion TC which uses a Tial 38mm wastegate as the BOV. A regular BOV is not able to hold the amount of PSI that they use so a WG was used instead.

This one was making over 800+whp.

Edit: it wasn't Chris Rado

 

thats a 44mm

i see a new bandwagon coming.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SPOOLINmatt &raquo;</TD></TR><TR><TD CLASS="quote">thats a 44mm

i see a new bandwagon coming. </TD></TR></TABLE>

I was actually talking about the one I saw in the mag about the Scion TC.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRX T-Si &raquo;</TD></TR><TR><TD CLASS="quote">I was actually talking about the one I saw in the mag about the Scion TC. </TD></TR></TABLE>

i know, i was just stating.

 

 

well that things like 3" thick. crazy setup

 

People have been running wastegates on charge piping for an overboost protection for years. Ive seen alot of supras and mustangs doing this and yes now that you posted that every kid on Honda Tech is gonna have a wastegate on their piping now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TGrant &raquo;</TD></TR><TR><TD CLASS="quote">People have been running wastegates on charge piping for an overboost protection for years. Ive seen alot of supras and mustangs doing this and yes now that you posted that every kid on Honda Tech is gonna have a wastegate on their piping now.</TD></TR></TABLE>

It's not used for overboost protection, it's used for traction control on small tire cars.

 

agreed

the wastegate is used as a pop= off valve to prevent overboosting


it DOES NOT work like a blow off valve. a blow off valve the port is on the OTHER side of the diaphram PUSHING down on the valve to keep it closed and opening when vaccum is present.


a wastegate has the nipple on the underside of the diaphram. thus. pushing against the spring to try to open the valve once ideal boost pressure has been reached. when vaccum is present, it only closes the valve down. it does not stay open.

 

Hmm interesting information. Well i guess some of these cars do run 60+psi

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote">agreed

the wastegate is used as a pop= off valve to prevent overboosting


it DOES NOT work like a blow off valve. a blow off valve the port is on the OTHER side of the diaphram PUSHING down on the valve to keep it closed and opening when vaccum is present.


a wastegate has the nipple on the underside of the diaphram. thus. pushing against the spring to try to open the valve once ideal boost pressure has been reached. when vaccum is present, it only closes the valve down. it does not stay open.</TD></TR></TABLE>

What's the purpose of a pop off valve? For a redundant backup system incase a boost controller fails. Look at the car this is on. That looks like a GT55, and I would bet that car runs 50+ pounds of boost. When's the last time you've seen a 65 pound wastegate spring?

The purpose of it is to allow the turbo to freewheel on the line to spin up as fast as possible if you're having trouble building boost off the line with a massive turbo on a little motor. The second purpose is to be able to precisely control boost coming out of the hole. It's more precise and faster reacting to control any air being bled off of the cold side of the motor to control boost, rather than trying to control the amount of gas going into the turbine side and controlling the speed of the turbo shaft. Is this great for reliability? No, because you can overspin the **** out of your turbo(s), but it works nicely on race cars. This stuff is becoming very popular on traction limited cars as well as cars running a clutch or clutchless manual, basically anything without a torque converter benefits bigtime.

http://www.turbomustangs.com/s...591.0

http://www.turbomustangs.com/s...057.0

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRX T-Si &raquo;</TD></TR><TR><TD CLASS="quote">I actually saw that recently in the news stand...forgot the name of the magazine. It was about a full race Scion TC which uses a Tial 38mm wastegate as the BOV. A regular BOV is not able to hold the amount of PSI that they use so a WG was used instead.

This one was making over 800+whp.

Edit: it wasn't Chris Rado</TD></TR></TABLE>

that was DSport and Kenny Tran's Scion tC

 

And boosted92 is correct about the purpose of it.

 

I understand now, gives me yet another reason why race turbos take a **** after so few passes.

In other words, its maxing the turbo out by putting 100% exhaust energy into it, and making the comp wheel almost effortless to move. Slam it shut [and switch to exhaust gas diverting w/'real' WG), burn rubber.

If there was a rather inexpensive way to measure 100k+ rpm's of the compressor wheel, you could make a cold-side WG restrictor so it wouldn't overspin.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted92 &raquo;</TD></TR><TR><TD CLASS="quote"> </TD></TR></TABLE>

i have been schooled