Just turbo'd the K, now a few questions.
12-11-2012, 08:58 PM
#1
Just turbo'd the K, now a few questions.
With a side winder and Garrett T3/T67 journal bearing turbo. It starts spooling at about 4,500rpm, makes 6-7 psi at around 5,500 rpm. then makes 11 at 7,500 and creeps up to 13. My boost cut was set at 13 psi tonight, upped it to 15 psi. How much power do you guys think that is?
it's about 30*F outside and i have 225/50/15 Dunlop Star Specs, and it doesn't hook at all in 3rd gear. i'm guessing somewhere in the 400 whp range.. What about at 13-15 psi?
Also, I have a 11.5 psi spring in there. with the super frigid weather, how much will my boost continue to rise?
it's about 30*F outside and i have 225/50/15 Dunlop Star Specs, and it doesn't hook at all in 3rd gear. i'm guessing somewhere in the 400 whp range.. What about at 13-15 psi?
Also, I have a 11.5 psi spring in there. with the super frigid weather, how much will my boost continue to rise?
12-11-2012, 09:32 PM
#2
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Re: Just turbo'd the K, now a few questions.
sorry bro not close to 400whp your at exactly 345.67 whp.
your boost is going to rise untill december 21st then its all over.....
your boost is going to rise untill december 21st then its all over.....
12-12-2012, 04:13 AM
#3
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
I can't wait, finally... Haha...
12-12-2012, 04:46 AM
#4
Re: Just turbo'd the K, now a few questions.
No.. but, i'm looking for an answer along the lines of " each pound of boost adds X hp". and i know i've seen a few people post that they've used a t67 on a stock k.
Such as D-rob
12-12-2012, 06:31 AM
#6
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Re: Just turbo'd the K, now a few questions.
No one knows your intercooler, manifold, valves, cams, etc.
Gtfo
12-12-2012, 07:48 AM
#7
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Re: Just turbo'd the K, now a few questions.
Youre boost cut should be set at a predetermined amount regardless of temp.
You probably never seen boost cut before because that turbo is so big it never reached peak boost.
Youre making more boost in colder weather because the air is denser and the turbocharger is compressing more air.
Lower your boost controller to 5psi and go from there if you keep trying to spike the boost and hit your limit I'm sure your motor won't last long if it isn't tuned past what your tuner tuned for.
Good luck
I just re read your post and looks like your running off the spring.
Either you have the wrong spring or your wastegate isn't at the best angle for exhaust flow.
Add a wastegate,or get a smaller spring and a boost controller
You probably never seen boost cut before because that turbo is so big it never reached peak boost.
Youre making more boost in colder weather because the air is denser and the turbocharger is compressing more air.
Lower your boost controller to 5psi and go from there if you keep trying to spike the boost and hit your limit I'm sure your motor won't last long if it isn't tuned past what your tuner tuned for.
Good luck
I just re read your post and looks like your running off the spring.
Either you have the wrong spring or your wastegate isn't at the best angle for exhaust flow.
Add a wastegate,or get a smaller spring and a boost controller
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12-12-2012, 11:59 AM
#8
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
If you have an 11.5 lb boost spring you should only see 11.5 lbs of boost regardless of weather. I have an 11.5 lb spring in my car and it makes approx 10 lbs of boost (pressure drop across the intercooler) regardless of weather. Can be 80F or 20F weather. So either you have a different spring than you think or you have boost creep issues.
Now if you're running a boost controller that's a whole different story. Since the boost solenoid runs off of a duty cycle it's greatly affected by ambient temps.
Now if you're running a boost controller that's a whole different story. Since the boost solenoid runs off of a duty cycle it's greatly affected by ambient temps.
12-12-2012, 04:27 PM
#9
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Re: Just turbo'd the K, now a few questions.
The Mayans never took leap year into account. If it weren't for leap year it would be 2016... so enjoy looking like a retard on the 21st
12-12-2012, 08:43 PM
#10
Re: Just turbo'd the K, now a few questions.
Youre boost cut should be set at a predetermined amount regardless of temp.
You probably never seen boost cut before because that turbo is so big it never reached peak boost.
Youre making more boost in colder weather because the air is denser and the turbocharger is compressing more air.
Lower your boost controller to 5psi and go from there if you keep trying to spike the boost and hit your limit I'm sure your motor won't last long if it isn't tuned past what your tuner tuned for.
Good luck
I just re read your post and looks like your running off the spring.
Either you have the wrong spring or your wastegate isn't at the best angle for exhaust flow.
Add a wastegate,or get a smaller spring and a boost controller
You probably never seen boost cut before because that turbo is so big it never reached peak boost.
Youre making more boost in colder weather because the air is denser and the turbocharger is compressing more air.
Lower your boost controller to 5psi and go from there if you keep trying to spike the boost and hit your limit I'm sure your motor won't last long if it isn't tuned past what your tuner tuned for.
Good luck
I just re read your post and looks like your running off the spring.
Either you have the wrong spring or your wastegate isn't at the best angle for exhaust flow.
Add a wastegate,or get a smaller spring and a boost controller
Took it out today, stayed a steady 11.0-11.5 across the board in 4th gear past 6k. anything below that and it's around 6-8 psi. The t4 to t3 flange that is on my manifold is definitely restricting the flow.. that's why i think alot of the exhaust gases are exiting through the wastegate.
If you have an 11.5 lb boost spring you should only see 11.5 lbs of boost regardless of weather. I have an 11.5 lb spring in my car and it makes approx 10 lbs of boost (pressure drop across the intercooler) regardless of weather. Can be 80F or 20F weather. So either you have a different spring than you think or you have boost creep issues.
Now if you're running a boost controller that's a whole different story. Since the boost solenoid runs off of a duty cycle it's greatly affected by ambient temps.
Now if you're running a boost controller that's a whole different story. Since the boost solenoid runs off of a duty cycle it's greatly affected by ambient temps.
Another thing, i got the full exhaust added on today. it's 3" from the turbo back, i think that's why my boost is more steady now under "full boost"
I'm at 100% duty cycle on ID1000's. what HP have you all seen with these with a base Fuel Pressure of about 50 psi?
12-13-2012, 05:47 AM
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Re: Just turbo'd the K, now a few questions.
12-13-2012, 06:20 AM
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Re: Just turbo'd the K, now a few questions.
12-13-2012, 08:33 AM
#17
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12-13-2012, 08:48 AM
#18
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
12-13-2012, 12:27 PM
#19
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
you shouldnt be maxin out 1000cc injectors on 11lbs of boost. what is your fuel system set up and what fuel are you using
12-13-2012, 12:35 PM
#20
Re: Just turbo'd the K, now a few questions.
Took it out today, stayed a steady 11.0-11.5 across the board in 4th gear past 6k. anything below that and it's around 6-8 psi. The t4 to t3 flange that is on my manifold is definitely restricting the flow.. that's why i think alot of the exhaust gases are exiting through the wastegate.
Last edited by TheShodan; 12-13-2012 at 06:07 PM.
12-13-2012, 03:08 PM
#21
Re: Just turbo'd the K, now a few questions.
[QUOTE=TheShodan;48218155]
Took it out today, stayed a steady 11.0-11.5 across the board in 4th gear past 6k. anything below that and it's around 6-8 psi. The t4 to t3 flange that is on my manifold is definitely restricting the flow.. that's why i think alot of the exhaust gases are exiting through the wastegate.
/QUOTE]
Actually no. your flanging has nothing to do with any exhaust velocity restriction. It's just flanging. leave it at that.
/QUOTE]
Actually no. your flanging has nothing to do with any exhaust velocity restriction. It's just flanging. leave it at that.
12-13-2012, 06:02 PM
#22
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
My car likes 11.5-11.8 on the corn. And by 122%, thats what the computer calculated, which has always been off.
12-13-2012, 06:07 PM
#23
Re: Just turbo'd the K, now a few questions.
[QUOTE=ohsnapzafingcu;48218694]i'm on e85, at about 11.0-11.5 on a Walbro 255, ID1000's and stock lines at 50 psi of fuel pressure. D-rob said tune a little richer to 11.5-12.0 so i'll do that next time i take it out.
Yes.. I'm sure. .. won't matter haus...
.. won't matter haus...
12-14-2012, 04:44 AM
#24
Honda-Tech Member
12-14-2012, 06:39 AM
#25
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
You guys know the difference between AFR on gasoline and E85 right?
Widebands don't read AFR they read in lambda which is the perfect burn ratio of a particular gasoline. In other words the wideband is looking for the perfect burn of one gas molecule to one oxygen molecule content in your exhaust gases. The perfect burn or stoich for gasoline is 14.7 AFR which is were most gauges will read when the wideband reports lambda 1.
However E85 has a stoich of 9.7 AFR which means when your wideband is reading lambda 1 on E85 on the exact same gauge it'll display 14.7. Remember the wideband is reading lambda not AFR.
So on E85 when you're in normal cruise on the highway your AFR is actually 9.7 and when you go WOT it drops below that. What I assume you guys are reading is gasoline calibrated AFR gauges saying you're running 11.5 AFR which would actually be very lean on E85 if that were true.
Widebands don't read AFR they read in lambda which is the perfect burn ratio of a particular gasoline. In other words the wideband is looking for the perfect burn of one gas molecule to one oxygen molecule content in your exhaust gases. The perfect burn or stoich for gasoline is 14.7 AFR which is were most gauges will read when the wideband reports lambda 1.
However E85 has a stoich of 9.7 AFR which means when your wideband is reading lambda 1 on E85 on the exact same gauge it'll display 14.7. Remember the wideband is reading lambda not AFR.
So on E85 when you're in normal cruise on the highway your AFR is actually 9.7 and when you go WOT it drops below that. What I assume you guys are reading is gasoline calibrated AFR gauges saying you're running 11.5 AFR which would actually be very lean on E85 if that were true.