Want to watch the members-only lesson on getting the perfect cold start? Sign up here and get access to over 200 other members only lessons at the same time: www.hpacademy.com/register www.hpacademy.com/previous-webinars/205-how-to-tune-cold-start/ - Taz.
JR talking about the Syvec ECU has basically convinced me I need to ditch the factory PCM sooner rather than later. When Syvec says you are one of the people that knows this system best, I knew I was in the right place all the time. Its very pricey for the PnP version but I think it's worth it, though discounts are welcome :)
i had commented on the instagram post, and cant remember if i said that on aviation turbines, many of the engines have a pressure controlled bleed valve to vent excess pressure from a compressor stage, this mainly to help with compressor surge/stall, but also improves turbine response.
Hi I’m running a large supercharger which is great for going down the dragstrip that want to drop the boost pressure when not at the track could this setup (hypothetically 30 PSI to drop down to 15 PSI )be done to run a lower boost in this way?
Until this presentation...I wasn’t aware that turbo ‘over-speeding’ is a potential outcome in any application or equipment configuration scenario. What factor(s) determines max rpm on any particular turbo? What can occur when a turbo over-speeds?
When you match and calibrate an engine its a very important parameter. The wheels will fatigue and break much earlier if you overspeed regularly, if you overspeed severely you can blow the wheels completely to pieces. The speed is set by both material properties and blade design of the wheel, no two turbos are the same. You can roughly guess the max speed by using a max compressor tip speed of 560-590m/s.
Max speed for a turbo varies...usually is specified by turbo manufacturer (which is often not displayed by hybrid/replica turbo manufacturer)... Overspeeding a turbo often caused by boost leak or simply just overboosting and engine... Easy to tell the turbo is oversped when the turbo shaft snapped clean
Can a waste gate be used on a centrifugal supercharger (have rising boost curve). The idea is to run a higher boost pulley set up to get higher boost on low RPM and limit the boost on high RPM. Example: w/o waste gate 3k rpm - 4psi, 4k rpm - 6psi, 5k rpm - 8psi, 6k rpm - 11psi, 7k rpm - 13psi. Let's say we don't want to run more than 8psi in with this engine combo. Can we use waste gate to limit it 8psi and have this -> 3k rpm - 4psi, 4k rpm - 6psi, 5k rpm - 8psi, 6k rpm - 8psi, 7k rpm - 8psi ? THank you !
The ultimate turbo setup is what Mercedes did in F1. Split the turbo through the block, put the cold side in front of the intake and hot side on the back with the manifold. Inside is an electric motor that can spool the turbo at any time to any level. They don't have to rely on the unpredictability of 2 step style turbo spooling, that's old tech now that's what they did in the 80s for rally.
I don't know if I'm just slow but I can't find the link to sign up for your giveaway of the K1 rods. Could I trouble somebody to point me in the proper direction? Much appreciated if you do. Keep up the great work HP Academy! Cheers. 🍻
Yeah sorry Art, we release these to RUclips a week after airing so that we have time to add captions and that comp finished last weekend. We will have the next one up and running soon though! - Taz.
@@Dave-mx9pz This is the pre-show from the start of a members only webinar. The lesson that followed can be found here: www.hpacademy.com/previous-webinars/ We stream these lessons live and then upload them to that archive a few hours afterwards. The lessons there are more focused on specific subjects and demonstrations than the pre-show here =) - Taz.
I'm curious why the exhaust side wastegate isn't being used to control the boost spikes while on the 2-step. Is it because you don't want to open the exhaust gate while staging in order to build boost quickly? because it doesn't actuate quickly enough to control the pressure spikes in the exhaust? or because it can't flow enough to control those pressure spikes?
Maximum effort to get the turbo spooled up means bleeding exhaust is a bad idea. Best to bleed off on the intake side as the second benefit is venting any boost to the atmosphere also speeds spool up time...
Pretty much like a pop-valve on turboxharged f1 car when they mandate 3bar maximum boost pressure in the regulation.... The solution is simply by installing a 3bar calibrated wastegate on the intake plenum...
Hey mate, we're in Queenstown but are not open to the public sorry. Email me and I'll see if I can recommend someone for you: support@hpacademy.com - Taz.
@@fadhlitajuddin6661 45m is bigger than the car for one thing 😂 By new engine, do you mean a new, heavily built engine or a stock new engine? You also need the turbo size you're using. Min-max boost pressure you intend on having. Whether it's for cruising, track or drag racing and much more to answer the gate size for a 13B rotor. That's not even touching on the engine model, porting, fuel type and so much more.
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Want to watch the members-only lesson on getting the perfect cold start? Sign up here and get access to over 200 other members only lessons at the same time: www.hpacademy.com/register
www.hpacademy.com/previous-webinars/205-how-to-tune-cold-start/ - Taz.
A drag car build on LS1 tech used this wastegate setup on his car as well. Worked REALLY well
JR talking about the Syvec ECU has basically convinced me I need to ditch the factory PCM sooner rather than later. When Syvec says you are one of the people that knows this system best, I knew I was in the right place all the time. Its very pricey for the PnP version but I think it's worth it, though discounts are welcome :)
What a great Chanel... no idea why I’m just finding out about HP academy
i had commented on the instagram post, and cant remember if i said that on aviation turbines, many of the engines have a pressure controlled bleed valve to vent excess pressure from a compressor stage, this mainly to help with compressor surge/stall, but also improves turbine response.
Hi I’m running a large supercharger which is great for going down the dragstrip that want to drop the boost pressure when not at the track could this setup (hypothetically 30 PSI to drop down to 15 PSI )be done to run a lower boost in this way?
Until this presentation...I wasn’t aware that turbo ‘over-speeding’ is a potential outcome in any application or equipment configuration scenario.
What factor(s) determines max rpm on any particular turbo?
What can occur when a turbo over-speeds?
Not an expert but I'd presume the bearings used as well as not operating within the efficient range of the compressor map would be the main issues.
When you match and calibrate an engine its a very important parameter. The wheels will fatigue and break much earlier if you overspeed regularly, if you overspeed severely you can blow the wheels completely to pieces. The speed is set by both material properties and blade design of the wheel, no two turbos are the same. You can roughly guess the max speed by using a max compressor tip speed of 560-590m/s.
Run an engine at an rpm its not designed for.....same idea. It will self destruct is the simple answer
Max speed for a turbo varies...usually is specified by turbo manufacturer (which is often not displayed by hybrid/replica turbo manufacturer)...
Overspeeding a turbo often caused by boost leak or simply just overboosting and engine...
Easy to tell the turbo is oversped when the turbo shaft snapped clean
Can a waste gate be used on a centrifugal supercharger (have rising boost curve). The idea is to run a higher boost pulley set up to get higher boost on low RPM and limit the boost on high RPM. Example: w/o waste gate 3k rpm - 4psi, 4k rpm - 6psi, 5k rpm - 8psi, 6k rpm - 11psi, 7k rpm - 13psi. Let's say we don't want to run more than 8psi in with this engine combo. Can we use waste gate to limit it 8psi and have this -> 3k rpm - 4psi, 4k rpm - 6psi, 5k rpm - 8psi, 6k rpm - 8psi, 7k rpm - 8psi ?
THank you !
The ultimate turbo setup is what Mercedes did in F1. Split the turbo through the block, put the cold side in front of the intake and hot side on the back with the manifold. Inside is an electric motor that can spool the turbo at any time to any level. They don't have to rely on the unpredictability of 2 step style turbo spooling, that's old tech now that's what they did in the 80s for rally.
That turbo+MGU-h is also 100+ thousand dollars a pop..
With the size of today bov you could do the same with a 4 port mac solenoid?...
How bout on a rear mount setup?
I don't know if I'm just slow but I can't find the link to sign up for your giveaway of the K1 rods. Could I trouble somebody to point me in the proper direction? Much appreciated if you do. Keep up the great work HP Academy! Cheers. 🍻
It ended already
Yeah sorry Art, we release these to RUclips a week after airing so that we have time to add captions and that comp finished last weekend. We will have the next one up and running soon though! - Taz.
@@hpa101where are your Videos first aired
@@Dave-mx9pz This is the pre-show from the start of a members only webinar. The lesson that followed can be found here: www.hpacademy.com/previous-webinars/
We stream these lessons live and then upload them to that archive a few hours afterwards. The lessons there are more focused on specific subjects and demonstrations than the pre-show here =) - Taz.
I'm curious why the exhaust side wastegate isn't being used to control the boost spikes while on the 2-step. Is it because you don't want to open the exhaust gate while staging in order to build boost quickly? because it doesn't actuate quickly enough to control the pressure spikes in the exhaust? or because it can't flow enough to control those pressure spikes?
Maximum effort to get the turbo spooled up means bleeding exhaust is a bad idea. Best to bleed off on the intake side as the second benefit is venting any boost to the atmosphere also speeds spool up time...
@@YZFoFittie YZF is correct
Pretty much like a pop-valve on turboxharged f1 car when they mandate 3bar maximum boost pressure in the regulation....
The solution is simply by installing a 3bar calibrated wastegate on the intake plenum...
Hey there do you tune professionally? If so are you available to tune my single turbo FD, I’m based in Auckland as well
Hey mate, we're in Queenstown but are not open to the public sorry. Email me and I'll see if I can recommend someone for you: support@hpacademy.com - Taz.
What wastegate size suits for 13b new engine? 40mm or 45m?
@@fadhlitajuddin6661 45m is bigger than the car for one thing 😂
By new engine, do you mean a new, heavily built engine or a stock new engine? You also need the turbo size you're using. Min-max boost pressure you intend on having. Whether it's for cruising, track or drag racing and much more to answer the gate size for a 13B rotor. That's not even touching on the engine model, porting, fuel type and so much more.
How much are those seats