A running pictorial of my monster Protomotive build
Thread Starter
|
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
Originally Posted by geetee
I see. So your hitting full boost around 4500 vs. 5000 rpms with a GT35?
Moderator
Joined: Jul 2003
Posts: 22,235
Rep Power: 1227
Originally Posted by Divexxtreme
Update:
My car just made 589 rwhp at it's lowest boost setting (.8 BAR/11.5 psi...boost controller turned off) at only 7,700 rpm. Should hit 600+ rwhp if/when we increase rpm. More numbers to follow as tuning progresses.
My car just made 589 rwhp at it's lowest boost setting (.8 BAR/11.5 psi...boost controller turned off) at only 7,700 rpm. Should hit 600+ rwhp if/when we increase rpm. More numbers to follow as tuning progresses.
Your motor makes 500 hp by 4500 rpm's. It stays between 500 and 525 hp between 4500 and 7000 rpm's. Actually it loses a tad between 5200 and 6200 rpm's. From there it picks up another 50+ hp from 7000 to 7700. What is Todd's explanation for this?
Last edited by cjv; May 6, 2007 at 08:16 PM.
Thread Starter
|
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
Originally Posted by cjv
Scott.
Your motor makes 500 hp by 5000 rpm's. It stays between 500 and 525 hp between 5000 and 7000 rpm's. From there it icks up another 50+ hp from 7000 to 7700. What is Todd's explanation for this?
Your motor makes 500 hp by 5000 rpm's. It stays between 500 and 525 hp between 5000 and 7000 rpm's. From there it icks up another 50+ hp from 7000 to 7700. What is Todd's explanation for this?
Last edited by Divexxtreme; May 6, 2007 at 08:18 PM.
Moderator
Joined: Jul 2003
Posts: 22,235
Rep Power: 1227
I haven't been following your build. Do you know what size fuel lines (s & r) that the car is using? Anything with the pumps and injectors? Did Todd do anything with the cams? Not being critical. I'm trying to figure something out.
Last edited by cjv; May 6, 2007 at 08:26 PM.
Thread Starter
|
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
Originally Posted by cjv
I haven't been following your build. Do you know what size fuel lines (s & r) that the car is using? Anything with the pumps and injectors? Did Todd do anything with the cams? Not being critical. I'm trying to figure something out.
Last edited by Divexxtreme; May 6, 2007 at 08:50 PM.
Moderator
Joined: Jul 2003
Posts: 22,235
Rep Power: 1227
By chance did Todd eliminate the vario cam and accuators handwelding and regrinding the upper lobes? Where by just utilizing the upper lobes only.
Your torque is coming on fast and strong which is excellent for .8 bar. What confuses me is once it hits it's peak it drops almost as fast which is hampering the hp. When it starts to recover the power jumps again. If Todd did what I suspect (above) then he is on uncharted ground above 5300 rpm's and further adjustments are going to be really interesting. Know how Todd does his homework you are probably in for a real treat.
My other thought is the 76 mm impellar may be too much after the torque max's out resulting in a temporary drag on the hp. Whatever, you are providing great info. Thanks and the best of luck.
Your torque is coming on fast and strong which is excellent for .8 bar. What confuses me is once it hits it's peak it drops almost as fast which is hampering the hp. When it starts to recover the power jumps again. If Todd did what I suspect (above) then he is on uncharted ground above 5300 rpm's and further adjustments are going to be really interesting. Know how Todd does his homework you are probably in for a real treat.
My other thought is the 76 mm impellar may be too much after the torque max's out resulting in a temporary drag on the hp. Whatever, you are providing great info. Thanks and the best of luck.
Last edited by cjv; May 6, 2007 at 09:36 PM.
Registered User
Joined: Jul 2003
Posts: 2,803
From: Missing in action
Rep Power: 214
Congratulations Scott . . . those are great numbers. It is interesting to see how similar our HP curves are given the similarities in our turbos. Ill explain when we talk next.
1.7-1.8 bar is a lot of boost with the power you will be making. I am not going that high . . . want to keep the heads secure.
Craig
1.7-1.8 bar is a lot of boost with the power you will be making. I am not going that high . . . want to keep the heads secure.
Craig
Thread Starter
|
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
Originally Posted by John D II
Scott,
When do think you will be finished with the tuning? And are you going to have time to fit in a track day before you leave again? I can't wait to see your new times...
When do think you will be finished with the tuning? And are you going to have time to fit in a track day before you leave again? I can't wait to see your new times...
Thread Starter
|
Registered User
Joined: Jun 2005
Posts: 8,509
From: Virginia, USA
Rep Power: 789
Originally Posted by Craig
Congratulations Scott . . . those are great numbers. It is interesting to see how similar our HP curves are given the similarities in our turbos. Ill explain when we talk next.
1.7-1.8 bar is a lot of boost with the power you will be making. I am not going that high . . . want to keep the heads secure.
Craig
1.7-1.8 bar is a lot of boost with the power you will be making. I am not going that high . . . want to keep the heads secure.
Craig
IRT to the boost levels, we're playing it by ear. However; the heads are O-ringed and the bottom-end is built, so I don't foresee any problems.