True Street Car Forums banner

1 - 20 of 22 Posts

·
Registered
Joined
·
2,409 Posts
Discussion Starter #1
anyone here run a wastegate on there centri setup? kinda like a tq booster i've been thinking about doing this but not really sure if its worth it.. if you have can you post your results? thanks :beer:
 

·
Premium Member
Joined
·
5,183 Posts
Not sure how bypassing exhaust gasses would help on a blower car, but I don't claim to know a lot.
 

·
Registered
Joined
·
1,743 Posts
do a google search "centrifugal and wastegate" lots of info and seems you get more hp/torque then a non wg setup from what I am reading.
 

·
Warp Drive
Joined
·
3,545 Posts
Some of the guys on the Vette forum are doing it. How much boost are you running? Also a restrictor will accomplish the same thing but I'm not sure you make enough boost to really benefit from either one of those setups. Not sure how it exactly works but the ECS kits on ls cars seem to make a lot of tq with those restrictor plates on them. You might be able to call them and they can explain it to you better.
 

·
Registered
Joined
·
928 Posts
Restrictor is easy and works but doesn't allow adjustments like a wastegate would.

Either way you pulley down, and either use a restictor to limit high RPM airflow, or a wastegate to bleed off excess air. Wastegates can be tricky to get working correctly. You need the correct size, locations, etc. All the boost curves I've seen from them on homemade setups look like Sin graphs with boost up/down.

Just do a restrictor plate if you want more torque.
 

·
Premium Member
Joined
·
5,183 Posts
Do they do this on the intake piping? Sounds way overly complicated.
 

·
Registered
Joined
·
2,409 Posts
Discussion Starter #8
Do they do this on the intake piping? Sounds way overly complicated.
Yes..



My understanding of it is if you were to run a 15psi pulley and a 10psi spring in the gate the car will make 10psi of boost but will make more tq then it would if you just ran a 10psi pulley
 

·
Premium Member
Joined
·
5,183 Posts
Yes..



My understanding of it is if you were to run a 15psi pulley and a 10psi spring in the gate the car will make 10psi of boost but will make more tq then it would if you just ran a 10psi pulley
Does the car run a MAF?
 

·
Always broken. Fuck your face
Joined
·
7,101 Posts
I feel like you're overthinking the whole v6 with a blower thing.
 

·
Registered
Joined
·
2,409 Posts
Discussion Starter #11
To each there own. I have goals for this car doesn't matter of it was a 4cyl v6 or v8. Not all of us have have friends that let's us drive there 9seconds cars.
 
  • Like
Reactions: CursedOne

·
Cyber Bully
Joined
·
1,843 Posts
No but im planning too with a head unit upgrade. What blower? You'll want to pulley to the max impeller rpm your blower allows and belt can hold. and then run the wastegate. I don't think most people know how it works and they are confusing an internal vs external wastegate on a turbo vs a centri. You would need to have the external wastegate before the intercooler so its premaf. The one on the torque booster setups is a bit much because those are being used on novi 2200 head units which push way more air than your procharger p1. A smaller wastegate would be fine. Do it!
 

·
Registered
Joined
·
546 Posts
Never even heard of this, but after reading, it sounds pretty cool. I say do it.
 

·
Cyber Bully
Joined
·
1,843 Posts
A restrictor plate is a rigged setup for those who can't afford a wastegate. It isn't going to provide consistent results in the same way as a wastegate. With a wastegate you will maintain a set boost all year long in any elevation, it bleeds off excess air to maintain a set absolute pressure. Its reliable. One of the biggest factors for air output is the input. You put something in front of the blower to make it more difficult to pull air in and you're disrupting the mechanics of the blower's efficiency. There is a reason the inlet has the diameter it does.

Lets say you spin it hard and its in the 70% efficiency range of the compressor map flowing xxxcfm. You add a wastegate it bleeds off the air after its already been "converted" and more or less maintains the efficiency (less heat more useable air flow). If you restrict the airflow before its used, you upset the design of the blower. Its spinning at the rate that should be 70% efficient but since you've made the inlet opening half its size, it is less efficient and generates more heat and less air used to add volume and pressure in the cylinders. Sure, spin it three times faster at half the efficiency and its going to still make more power, you're just cutting yourself short and ruining one of the best benefits of a centri....cool IATs and high efficiency.
 

·
Warp Drive
Joined
·
3,545 Posts
A restrictor plate is a rigged setup for those who can't afford a wastegate. It isn't going to provide consistent results in the same way as a wastegate.
The ECS kits I'm talking about come with the restrictor and there's nothing rigged about it. They've been doing this setup for a long time with great results. I say for the op to do some research and see if it will work for him. Mach828 what head unit are you upgrading to?
 

·
Registered
Joined
·
2,409 Posts
Discussion Starter #18
I will have to do some research on what the p1sc is rated for. But I wanna run about 10psi of boost with the wastgate I'm thinking that would get me 450+ to the wheels.
 
1 - 20 of 22 Posts
Top