surging on WOT

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grifrowl

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	Re: surging on WOT « Reply #15 on: September 20, 2017, 11:14:46 PM »

Try a k24-7400 from a later volvo r? It should be pretty close to bolt in place. Compressor map surge line looks more promising.


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contrast

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	Re: surging on WOT « Reply #16 on: September 20, 2017, 11:20:22 PM »

Quote from: nyet on September 20, 2017, 05:15:14 PM

I really don't get the tiny motor huge turbo thing,

19T is by no means a huge turbo lol


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fknbrkn

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mk4 1.8T AUM

	Re: surging on WOT « Reply #17 on: September 21, 2017, 01:40:02 PM »

Quote from: contrast on September 19, 2017, 12:55:40 PM

Same Volvo turbo on a Volvo S60 2.5T. Dual CVVT.
No matter how I adjusted cams, it still surged.
As soon as I went above 1.1bar at 3000-3500 or so, it started chirping like a bird. So I kept the boost gradually rising from 3k to redline.

yep its definetely sounds like that (nice explanation btw Cheesy

)


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fknbrkn

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	Re: surging on WOT « Reply #18 on: September 21, 2017, 01:42:56 PM »

Quote from: grifrowl on September 20, 2017, 11:14:46 PM

Try a k24-7400 from a later volvo r? It should be pretty close to bolt in place. Compressor map surge line looks more promising.

well its pretty hard to find those turbos here


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fknbrkn

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	Re: surging on WOT « Reply #19 on: September 21, 2017, 02:20:14 PM »

Quote from: 4ringpieces on September 20, 2017, 01:45:59 AM

Try find an antisurge compressor housing

there is kinugawa offers $150 anti surge comp housing
but im using volvos comp housing with internal DV and different WG mounting

idk is there a reason to continue with that turbo or change to another T3-flange unit

19T pulls from 4500 and hits max 300g/s at ~6000rpm


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fknbrkn

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	Re: surging on WOT « Reply #20 on: September 26, 2017, 06:43:20 PM »

well i was changed comp wheel to billet 7+7
just for curious
pid should be tweaked aswell and its 5120 file

dotted line - new comp wheel


« Last Edit: September 26, 2017, 06:45:46 PM by fukenbroken »	Logged

TijnCU

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	Re: surging on WOT « Reply #21 on: September 27, 2017, 12:39:56 AM »

Cool, you picked up 20g/s? Is surging eliminated now with the slower spool?


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My project (all photos back online!)

fknbrkn

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	Re: surging on WOT « Reply #22 on: September 27, 2017, 10:11:15 AM »

unfortunally i have no time to fix pid and test it with higher mid-level boost
but ive seen today 1.4 bar @3500 at 5 gear with no surging

as for maf readings - there is a slightly improvement. ~296 -> ~305


« Last Edit: September 27, 2017, 10:16:55 AM by fukenbroken »	Logged

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