Brettus turbo 111 (the ultimate Renesis turbo ?)
#326
Registered
iTrader: (3)
Since your using the 4port solenoid why not add a boost cut. Here is a good looking off the shelf knock monitor setup with 5v signal out. It's much cheaper than a rebuild.
Gizzmo KMon Knock Monitor & Analysis
Gizzmo KMon Knock Monitor & Analysis
#328
Since your using the 4port solenoid why not add a boost cut. Here is a good looking off the shelf knock monitor setup with 5v signal out. It's much cheaper than a rebuild.
Gizzmo KMon Knock Monitor & Analysis
Gizzmo KMon Knock Monitor & Analysis
#334
That's the easy solution .... If i can't shift spoolup by 1000rpm with what I have planned .... I will do that.
So no good to go to the choke line on a Garrett ...... but no problem to go well into it on a BW ?
So no good to go to the choke line on a Garrett ...... but no problem to go well into it on a BW ?
Last edited by Brettus; 07-31-2015 at 08:03 PM.
#340
No respecter of malarkey
iTrader: (25)
It was just in response to the earlier comment, kind of wish I had ignored it now. But that number is entirely possible with the EFR turbos and as mentioned they will do mid 20s which is getting to be standard practice now, but you need to run E85 to handle that kind of boost that low in the rpm range.
Did you notice in the Efficiency Thread that the little 7163 was capable of 16 psi @ 2000? That would generate a low rpm torque number nobody ever thought was possible on a rotary engine.
I agree you still have a lot of things to try and do, so this isn't to be negative or knock on your setup, but the first thing I look for now is torque curve. While you were making some good power up high on the virtual dyno plot the torque curve overall is very weak. In fact peak torque occured at approx. 8200. That's an obvious sign to me that the sizing is too biased to the top end. Some of the other things may help as you suggest, but I'm still feeling that the tighter housing is the ticket.
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Did you notice in the Efficiency Thread that the little 7163 was capable of 16 psi @ 2000? That would generate a low rpm torque number nobody ever thought was possible on a rotary engine.
I agree you still have a lot of things to try and do, so this isn't to be negative or knock on your setup, but the first thing I look for now is torque curve. While you were making some good power up high on the virtual dyno plot the torque curve overall is very weak. In fact peak torque occured at approx. 8200. That's an obvious sign to me that the sizing is too biased to the top end. Some of the other things may help as you suggest, but I'm still feeling that the tighter housing is the ticket.
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Last edited by TeamRX8; 08-01-2015 at 05:52 AM.
#341
Brettus, I think you are best to pull the motor and rebuild before you make too many drastic or major changes to the setup. You have certainly proved the concept of your design and I commend you for it. As you know, the low compression isn't going to help torque, it's also going to affect how much timing & boost you can run with. If you sort the compression issue before changing too many things, you know then that the motor is good and your tune would be more suitable. Smaller alterations to your setup will then have a larger effect on your goal. It's win win
I don't mean any of this with detriment, as said I commend you for your work so far and I look forward to seeing what you can achieve with it.
Sending positive waves man
I don't mean any of this with detriment, as said I commend you for your work so far and I look forward to seeing what you can achieve with it.
Sending positive waves man
#342
Brettus, I think you are best to pull the motor and rebuild before you make too many drastic or major changes to the setup. You have certainly proved the concept of your design and I commend you for it. As you know, the low compression isn't going to help torque, it's also going to affect how much timing & boost you can run with. If you sort the compression issue before changing too many things, you know then that the motor is good and your tune would be more suitable. Smaller alterations to your setup will then have a larger effect on your goal. It's win win
I don't mean any of this with detriment, as said I commend you for your work so far and I look forward to seeing what you can achieve with it.
Sending positive waves man
I don't mean any of this with detriment, as said I commend you for your work so far and I look forward to seeing what you can achieve with it.
Sending positive waves man
I'll be sure to retune when the engine gets rebuilt .
#344
Furry muff . Fair point.