Do blow off valves need to be cleaned on S/C car?

scope22 · 02-20-2017, 03:52 PM

?

Chuck33079 · 02-20-2017, 03:56 PM

Mine's not a SC, but I clean and lube the BOVs every time I have the bumper off to clean the air filters. Turbosmart makes a BOV specific lube.

Jinxx · 02-20-2017, 06:26 PM

I have a GTM supercharger and I have to clean mine about every 2-3 months or it starts sticking

scope22 · 02-20-2017, 10:25 PM

How do you know if it's sticking? Fluttering?

Quote:

Originally Posted by Jinxx

I have a GTM supercharger and I have to clean mine about every 2-3 months or it starts sticking

Jinxx · 02-21-2017, 05:33 AM

Yes fluttering ....or in a extreme case it's stuck open or closed ...most of the time it's stuck closed

Kamillio · 02-21-2017, 08:40 AM

How do you clean a blow off valve? I have an S/C too and the BOV has been fluttering since new when part throttle at high RPMs.

TopgunZ · 02-21-2017, 08:43 AM

Quote:

Originally Posted by Kamillio

How do you clean a blow off valve? I have an S/C too and the BOV has been fluttering since new when part throttle at high RPMs.

Do you have the bosch or turbosmart bov? I dont have a record of sending the Tial out to you.

Kamillio · 02-21-2017, 08:46 AM

I have the bosch installed. The Turbosmart is on the shelf still.

TopgunZ · 02-21-2017, 08:55 AM

That is why you get flutter. The Air to Air kit's intake design allows it to breath better, causing more air to vent, with no way of recirculating it back into the intake to quiet it down. That little bosch valve cant keep up. Even if you could recirc it, it would still make a good amount of noise. The turbosmart with the stock spring will be even worse. You could buy the lightest spring (blue) and that will help or try trimming the current spring.

The only good way to get rid of it is to upgrade to a Tial QRJ.

Kamillio · 02-21-2017, 08:58 AM

Is flutter a bad thing? I don't really care about the noise. I don't know anything about BOVs and their proper performance

Jinxx · 02-21-2017, 10:02 AM

I have the turbosmart valve with the red spring... its adjusted just one turn passed the o-ring... when cleaned I don't get any flutter but after about a month I notice very light flutter beginning as it get dirty

Light flutter prolly won't hurt anything but if it's stuck closed then what you hear is back surge on the supercharger adding extra wear

TopgunZ · 02-21-2017, 10:20 AM

Quote:

Originally Posted by Jinxx

I have the turbosmart valve with the red spring... its adjusted just one turn passed the o-ring... when cleaned I don't get any flutter but after about a month I notice very light flutter beginning as it get dirty

Light flutter prolly won't hurt anything but if it's stuck closed then what you hear is back surge on the supercharger adding extra wear

Yeah but with the Air to Air kit it completely changes the airflow. So the red spring will make a terrible flutter. I had used every spring turbosmart offers and it sucked on my car. I ended up getting the lightest spring and had to trim off 2 rings and it still didnt sound right to me.

The flutter means the air is not coming out of the supercharger properly. The noise you hear is the piston in the bpv opening and closing. It is very hard on the valve since instead of it just closing on throttle then opening when off throttle once, it is doing that like a 1000 times more. You will eventually wear your valve out.

Also, the air needs to get out of the system or it tries to push itself back through the supercharger blades, basically trying to force it to slow down but it cant since it is belt driven so it causes unwanted stress on the bearings.

Kamillio · 02-21-2017, 11:37 AM

Quote:

Originally Posted by TopgunZ

Yeah but with the Air to Air kit it completely changes the airflow. So the red spring will make a terrible flutter. I had used every spring turbosmart offers and it sucked on my car. I ended up getting the lightest spring and had to trim off 2 rings and it still didnt sound right to me.

The flutter means the air is not coming out of the supercharger properly. The noise you hear is the piston in the bpv opening and closing. It is very hard on the valve since instead of it just closing on throttle then opening when off throttle once, it is doing that like a 1000 times more. You will eventually wear your valve out.

Also, the air needs to get out of the system or it tries to push itself back through the supercharger blades, basically trying to force it to slow down but it cant since it is belt driven so it causes unwanted stress on the bearings.

Sounds like I will need the Tial. What parts do I need to be able to install the Tial on your kit Topgunz? I searched through your thread and while I found pictures I don't know what the parts are of the sleeves and the metal Tee pipe that the Tial BOV attaches to. Do I get the 38mm or 50mm Tial?

TopgunZ · 02-21-2017, 11:41 AM

Easiest thing to do is just let me have it all sent to your house. I think you have the earlier version when i still had the 45* coming off the supercharger into a 2.5" right?

Kamillio · 02-21-2017, 11:45 AM

Yes, let me PM you.

02-20-2017, 03:52 PM	#1 (permalink)
scope22 A True Z Fanatic Join Date: Apr 2012 Location: Roswell, GA Posts: 1,179 Drives: wife crazy Rep Power: 55	Do blow off valves need to be cleaned on S/C car? ?

02-20-2017, 03:56 PM	#2 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	Mine's not a SC, but I clean and lube the BOVs every time I have the bumper off to clean the air filters. Turbosmart makes a BOV specific lube. kentmo280z likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

02-21-2017, 08:40 AM	#6 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 51	How do you clean a blow off valve? I have an S/C too and the BOV has been fluttering since new when part throttle at high RPMs. __________________ 370z

02-21-2017, 08:46 AM	#8 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 51	I have the bosch installed. The Turbosmart is on the shelf still. __________________ 370z

02-21-2017, 08:55 AM	#9 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	That is why you get flutter. The Air to Air kit's intake design allows it to breath better, causing more air to vent, with no way of recirculating it back into the intake to quiet it down. That little bosch valve cant keep up. Even if you could recirc it, it would still make a good amount of noise. The turbosmart with the stock spring will be even worse. You could buy the lightest spring (blue) and that will help or try trimming the current spring. The only good way to get rid of it is to upgrade to a Tial QRJ. BOLIO 671 likes this. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

02-20-2017, 06:26 PM	#3 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3376	I have a GTM supercharger and I have to clean mine about every 2-3 months or it starts sticking

02-21-2017, 05:33 AM	#5 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3376	Yes fluttering ....or in a extreme case it's stuck open or closed ...most of the time it's stuck closed

02-21-2017, 08:58 AM	#10 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 51	Is flutter a bad thing? I don't really care about the noise. I don't know anything about BOVs and their proper performance __________________ 370z

02-21-2017, 10:02 AM	#11 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3376	I have the turbosmart valve with the red spring... its adjusted just one turn passed the o-ring... when cleaned I don't get any flutter but after about a month I notice very light flutter beginning as it get dirty Light flutter prolly won't hurt anything but if it's stuck closed then what you hear is back surge on the supercharger adding extra wear

02-21-2017, 11:41 AM	#14 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	Easiest thing to do is just let me have it all sent to your house. I think you have the earlier version when i still had the 45* coming off the supercharger into a 2.5" right? YzGyz likes this. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

02-21-2017, 11:45 AM	#15 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 51	Yes, let me PM you. __________________ 370z

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