were would you say this turbo spools?
I have always wondered "when" everyone say's there turbo begin's to spool are they saying full boost or what? Here is a log from last night, 4th gear pull. Please let me know. Just running on wastgate.
Rpm Kph Boost 3273 93 -293 3289 93 -125 3299 93 -85 3309 93 -7 3333 93 3 3331 94 6 3358 94 8 3370 94 12 3381 94 14 3407 95 16 3432 95 17 3448 95 19 3457 96 22 3475 96 24 3489 97 26 3509 97 28 3526 97 30 3549 98 32 3569 99 35 3588 99 36 3610 99 38 3633 100 41 3669 101 43 3681 101 46 3698 102 48 3718 102 50 3753 103 53 3782 104 56 3814 104 59 3850 105 62 3883 106 66 3904 107 68 3937 108 71 3974 109 75 4010 109 78 4040 110 79 4071 111 80 4105 112 82 4139 113 85 4178 114 88 4218 115 92 4258 116 95 4300 117 97 4330 118 98 4363 119 98 4409 120 99 4445 121 99 4491 122 99 4542 123 99 4578 124 99 4612 125 99 4652 127 100 4693 128 100 4734 129 101 4770 130 102 4832 131 102 4870 132 103 4898 133 103 4934 134 104 4970 136 104 5016 136 105 5043 138 106 5088 139 105 5112 140 107 5161 141 106 5186 142 108 5233 143 108 5266 144 109 5307 145 109 5338 146 110 5384 147 111 5426 148 111 5478 149 112 5514 151 113 5535 152 113 5597 153 113 5630 154 114 5660 155 114 5703 156 114 5769 157 114 5804 159 115 5841 160 115 5873 161 116 5914 162 117 5952 163 117 6000 165 118 6053 166 118 6087 167 118 6132 168 118 6177 170 118 6218 171 119 6260 171 119 6302 172 120 6345 173 120 6393 174 120 |
LOL - boost is starting when you hit positive pressure at 3333 RPM.... however that is obviously way under the efficiency range...
If you have a full scale from the time you floored it in 3rd or 4th gear at 2500rpm to the time it hits your desired boot level that would be better. I mean if you are sitting at 3300 rpms and floor it, chances are the turbo is going to spool right up, but that is not an accurate way to tell when/where the turbo spools.. .you need to do a full pull from lower RPM. Try this if you want to graph it.... Get into 4th gear around 2500 RPM.....FLOOR IT, take it up to around 7k RPM and then show us that data. |
LOL! I know what boost is! What I am asking is to figure if turbo A is a slow spooling or fast spooling unit. If I had some of my old logs from my 40r it would help. This is on a 4094 with .95 exhhaust. Here is a 3rd gear pull from lower rpms.
RPM KPH BOOST 2439 32 -20 2483 33 -10 2541 33 -3 2601 34 0 2657 35 0 2729 35 1 2791 37 2 2854 37 1 2903 38 2 2979 39 2 3067 40 3 3138 41 4 3225 42 5 3299 43 6 3378 44 7 3478 45 8 3541 46 10 3646 47 12 3712 48 14 3809 49 17 3902 50 20 4004 51 24 4111 53 29 4218 54 33 4332 56 39 4440 57 44 4562 59 51 4678 60 58 4841 62 68 4990 64 80 5133 66 90 5326 68 100 5470 70 105 5690 72 107 5813 74 109 6067 77 110 6193 79 113 6410 82 113 6533 84 116 6830 86 118 6963 88 119 7149 90 119 7345 92 118 |
To me it seems slow as it does not hit 1 bar until 5k+ rpms.
|
Originally Posted by sk8world
(Post 7114978)
To me it seems slow as it does not hit 1 bar until 5k+ rpms.
|
PM me and we can compare notes. It's best to leave the nitwits out of it when they have nothing to add to contribute.
From your numbers for the 4th gear pull it looks like you hit 4330 for the target (wastegate spring) boost. What worries me is that you kept boost over the spring pressure. Steady climb. You might have an issue with that. The turbo is over powering the WG. It could be a combination of WG issue or the path to the WG that the piping takes. Whose manifold is it? Do this scenario and I'll provide a direct comparison: 3rd gear pull from 2500rpm until say, 6000rpm. Freeway entrance ramps works nice for this. |
Recent dyno session shows I hit target boost of 23 psi at 4800 rpm in 4th gear.
Road tuning shows I hit 1 bar at 4300rpm in 3rd gear....starting from 2500rpm runnning WOT. I hit 19psi that run by 4600rpm. |
Originally Posted by Asleep
(Post 7116175)
PM me and we can compare notes. It's best to leave the nitwits out of it when they have nothing to add to contribute.
From your numbers for the 4th gear pull it looks like you hit 4330 for the target (wastegate spring) boost. What worries me is that you kept boost over the spring pressure. Steady climb. You might have an issue with that. The turbo is over powering the WG. It could be a combination of WG issue or the path to the WG that the piping takes. Whose manifold is it? Do this scenario and I'll provide a direct comparison: 3rd gear pull from 2500rpm until say, 6000rpm. Freeway entrance ramps works nice for this. The mani is A-spec long runner. I have been talking with Sean as the spring should have been a .9 bar but I keep seeing 1.2 on every run. Sometimes a hair high or low. (1.18-1.22). Now the wastegate is routed back in... I will PM you a few more logs from tonight. |
Originally Posted by sk8world
(Post 7116487)
The mani is A-spec long runner. I have been talking with Sean as the spring should have been a .9 bar but I keep seeing 1.2 on every run. Sometimes a hair high or low. (1.18-1.22). Now the wastegate is routed back in... I will PM you a few more logs from tonight.
Okay. I posted a chart of mine in another thread. Something is wrong. When running with boost controller off (WG only) you should not be creeping unless you have an issue with the WG or the setup. Even if the output of the WG is routed in or out, it should not creep that much. If the spring is actually .9 and you are getting around 1.2, then that supports the assumption of an issue. Sean's a good guy. He'll take care of you. |
I can tell ya that on a 4th gear redline pull I saw boost creep up to about 19 psi (12 psi spring) with my 500R/long runner mani/4in dp/tial 44mm gate. Only time I've seen creep with this setup. I also see 1 bar around 3700 rpms, give or take a bit based on ambient temps (2nd/3rd gear).
|
Don't make get out of bed at 12:10am and do a 4th gear pull on the WG to confirm this scenario...;)
|
Nah, have a good night. I will go over the gate again but I have run a few test per Sean and have gotten 1.2 bars every time. My other thought is the 3bar sensor. Maybe I have it set up wrong on the PFC? I have noticed my boost guage is lower than the reading on datalogic but between watching a/r's, rpm, speed, road, boost its hard. But tonight on the last pull I watched the guage in 2nd gear and it looked to be 15-16psi yet my log showed 17.5psi. Either way its higher than the .9 bar spring.
Rich, that 500r does spool very fast and I am sure the 4inch exhaust helps too. |
What boost controller are you using?
|
old stlye profec B
|
ok, just confirmed it is the .9 (large blue) spring in gate. So now I need to make sure the 3bar is set up correct in pfc as I see 1.2bars everytime. My settings are:
PIM Option 3: scale at 45000 and offset is 150. Is that corret? |
Originally Posted by sk8world
(Post 7114973)
LOL! I know what boost is! What I am asking is to figure if turbo A is a slow spooling or fast spooling unit. If I had some of my old logs from my 40r it would help. This is on a 4094 with .95 exhhaust. Here is a 3rd gear pull from lower rpms.
RPM KPH BOOST 2439 32 -20 2483 33 -10 2541 33 -3 2601 34 0 2657 35 0 2729 35 1 2791 37 2 2854 37 1 2903 38 2 2979 39 2 3067 40 3 3138 41 4 3225 42 5 3299 43 6 3378 44 7 3478 45 8 3541 46 10 3646 47 12 3712 48 14 3809 49 17 3902 50 20 4004 51 24 4111 53 29 4218 54 33 4332 56 39 4440 57 44 4562 59 51 4678 60 58 4841 62 68 4990 64 80 5133 66 90 5326 68 100 5470 70 105 5690 72 107 5813 74 109 6067 77 110 6193 79 113 6410 82 113 6533 84 116 6830 86 118 6963 88 119 7149 90 119 7345 92 118 B |
Hey Brian! Yeah, Thats what it looks like but I pulled it out last night and it was the large blue spring that is Tials .9 bar spring? ??
|
Originally Posted by sk8world
(Post 7121725)
Hey Brian! Yeah, Thats what it looks like but I pulled it out last night and it was the large blue spring that is Tials .9 bar spring? ??
|
Tial 44m
|
yeah on my tial 40mm wastegate I have a big blue and a small yellow witch equalls 17psi (blue 12psi and yellow small 5psi). Not sure if the 44mm gate is differant.
|
http://www.tialsport.com/prod_wg.htm
Yes, in the Tial 44mm WG, the large blue spring is the 0.900 bar spring, which is equal to 13.053 psi. |
All times are GMT -5. The time now is 09:07 PM. |
© 2024 MH Sub I, LLC dba Internet Brands