Wastegate poll - Turbo V8 experience required
12-09-2015, 08:32 PM
#1
Wastegate poll - Turbo V8 experience required Hi there, I would like to collect some sample data about wastegate selection and the aftermaths.
Have you put together a Turbo V8 in the last ten years?
Was this setup using 7 to 15psi of boost pressure? More?
When you purchased the wastegate spring for that boost pressure, did it fail to reach the rated boost pressure?
What was your solution for adjusting the boost pressure?
Could you have saved any time or money by knowing in advance anything related to exhaust gas pressure ratio, or "drive pressure" ratio of your combination? If so, what was it.
Thank you
Have you put together a Turbo V8 in the last ten years?
Was this setup using 7 to 15psi of boost pressure? More?
When you purchased the wastegate spring for that boost pressure, did it fail to reach the rated boost pressure?
What was your solution for adjusting the boost pressure?
Could you have saved any time or money by knowing in advance anything related to exhaust gas pressure ratio, or "drive pressure" ratio of your combination? If so, what was it.
Thank you
12-10-2015, 12:04 AM
#3
10 Second Club
iTrader: (22)
Join Date: Mar 2006
Location: Northwest side of Chicago
Posts: 3,677
Likes: 0
Received 2 Likes
on
2 Posts
This is not going to go well but I just drank a bunch of coffee and will respond.
Yes
Yes, up to 20psi.
Yes but it was close.
Pressed a couple buttons on the controller and called it good.
No not really but after researching its effects it prompted me to change my turbo to a more efficient free flowing turbine wheel to reduce back pressure.
Yes
Yes, up to 20psi.
Yes but it was close.
Pressed a couple buttons on the controller and called it good.
No not really but after researching its effects it prompted me to change my turbo to a more efficient free flowing turbine wheel to reduce back pressure.
12-10-2015, 10:28 PM
#5
TECH Fanatic
Yes
Both
8 pound spring yielded 9psi manifold pressure on gate. (twin China MVS40's)
Home made boost control
Nope. My set up (100% fabed by me) worked just as planned, hell even better really!
Both
8 pound spring yielded 9psi manifold pressure on gate. (twin China MVS40's)
Home made boost control
Nope. My set up (100% fabed by me) worked just as planned, hell even better really!
Trending Topics
12-11-2015, 04:10 PM
#8
there is so much to this.... size crossover, placement of gates ect. I run twin precision 44s with 3 inch crossover, 88mm midframe on 20+ psi. and use Boost leash controller. my 8 psi spring seeing 12.8...
12-14-2015, 07:52 PM
#12
Did you have any trouble with your gates due to exhaust gas pressure? was the boost controller able to overcome your issues? Could you have saved any money or time by doing calculations beforehand to account for excessive pressure in the exhaust system?
12-14-2015, 08:08 PM
#13
11 Second Club
iTrader: (8)
Join Date: Mar 2007
Location: Windsor, Ontario Canada
Posts: 569
Likes: 0
Received 3 Likes
on
3 Posts
Twin tial 38's. True divided 2.25" hotside on 5.3L with a 1.05A/R T4 GT45.
5.xx springs netted me around 6.00PSI
10.XX springs I am getting bang on 10.00
I adjust using a innovate SCG-1
Also I reference my wastegates from the turbo outlet and my gauge reads from the intake.
Jay
5.xx springs netted me around 6.00PSI
10.XX springs I am getting bang on 10.00
I adjust using a innovate SCG-1
Also I reference my wastegates from the turbo outlet and my gauge reads from the intake.
Jay