Cosworth Supercharger Owners Thread - Page 103 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Cosworth_0686 · 07-27-2019, 05:19 PM

Most of my driving, to be honest, has been city driving back and forth to/from work. There was occasionally a slight noise that I'd been unsure about, but it presented itself hugely while on a trip out of state to meet up with a bunch of other Cosworths. Someone there confirmed the noise as knock, so I've been taking it easy so I can get home without issue. Matt, this presented itself even more while running on the 93 octane tune with 93. I've switched down to the 91 tune, and it's manageable, though it's knocking really easily under average driving for a BRZ. Any suggestions, or would you be able to help adjust the tune?

botbs · 07-28-2019, 06:03 PM

Quote:

Originally Posted by Cosworth_0686

Most of my driving, to be honest, has been city driving back and forth to/from work. There was occasionally a slight noise that I'd been unsure about, but it presented itself hugely while on a trip out of state to meet up with a bunch of other Cosworths. Someone there confirmed the noise as knock, so I've been taking it easy so I can get home without issue. Matt, this presented itself even more while running on the 93 octane tune with 93. I've switched down to the 91 tune, and it's manageable, though it's knocking really easily under average driving for a BRZ. Any suggestions, or would you be able to help adjust the tune?

+1 on this, I added Boostane (Octane Booster) with sucky BC, Canada Cheveron 94 still have knock. Tried mode 1 and mode 2 as well.

Thanks!

sly · 07-28-2019, 06:13 PM

I'm not getting knock anymore. Matt dialed back on the timing some, and that seems to have fixed it. I run 93 octane Exxon without any problems. Shell seemed to knock a little for me.

botbs · 07-29-2019, 10:03 PM

Please keep me posted if you guys solved the knocking issue. Thanks

KyleWithFocus · 08-03-2019, 07:46 AM

I’m having a really hard time finding a replacement belt in stock in the US. Really making me have second thoughts about keeping this car around if finding something as simple as a drive belt is such a pain. Anyone have any idea where to look for replacements?

Sent from my iPhone using Tapatalk

gtengr · 08-03-2019, 09:48 AM

Quote:

Originally Posted by KyleWithFocus

I’m having a really hard time finding a replacement belt in stock in the US. Really making me have second thoughts about keeping this car around if finding something as simple as a drive belt is such a pain. Anyone have any idea where to look for replacements?

Sent from my iPhone using Tapatalk

I don't recall having any issues finding one locally. I'm using the smaller pulley though. Is it out of stock online too?

botbs · 08-03-2019, 01:24 PM

Quote:

Originally Posted by KyleWithFocus

I’m having a really hard time finding a replacement belt in stock in the US. Really making me have second thoughts about keeping this car around if finding something as simple as a drive belt is such a pain. Anyone have any idea where to look for replacements?

Sent from my iPhone using Tapatalk

https://www.amazon.com › Bando-6...<...e - Amazon.com

If link doesnt work, amazon has it 6PK2315

This should work i think

DBW · 08-06-2019, 08:31 AM

Just wrapped up installing the cosworth supercharger on my personal car here at the shop. Tuning was done in house by myself on e85. Currently I am still running the OEM header and full exhaust but with the cats removed as the cosworth header I have here is cracked in multiple places. I plan on fixing the header here and then putting it back on the dyno to calibrate it accordingly and will post the back to back results when I do so.

Until then here are some pics and the dyno graph of the small pulley supercharger on e85.

Doug

secho · 08-06-2019, 08:44 AM

Quote:

Originally Posted by DBW

Just wrapped up installing the cosworth supercharger on my personal car here at the shop. Tuning was done in house by myself on e85. Currently I am still running the OEM header and full exhaust but with the cats removed as the cosworth header I have here is cracked in multiple places. I plan on fixing the header here and then putting it back on the dyno to calibrate it accordingly and will post the back to back results when I do so.

Until then here are some pics and the dyno graph of the small pulley supercharger on e85.

Doug

Congrats, looks great!! PI and fuel pump are stock?

DBW · 08-06-2019, 08:53 AM

Quote:

Originally Posted by secho

Congrats, looks great!! PI and fuel pump are stock?

Yes stock, but close the limits of what they can support safely.

Edit: the LPFP has been upgraded, however the DI and PI are stock

weederr33 · 08-06-2019, 10:47 AM

Very nice!

secho · 08-06-2019, 11:00 AM

Quote:

Originally Posted by DBW

Yes stock, but close the limits of what they can support safely.

Edit: the LPFP has been upgraded, however the DI and PI are stock

I reached stock lpfp limits just with std pulley on gasoline. If I do two wot pulls at 3rd I get low fuel pressure cel

I am going to install dw65c, small pulley and dw450 PIs soon.

nikitopo · 08-06-2019, 12:22 PM

Quote:

Originally Posted by botbs

+1 on this, I added Boostane (Octane Booster) with sucky BC, Canada Cheveron 94 still have knock. Tried mode 1 and mode 2 as well.

Thanks!

Did you change the catback?

botbs · 08-06-2019, 02:12 PM

Quote:

Originally Posted by nikitopo

Did you change the catback?

Yup, i did.

08-06-2019, 08:31 AM	#1436
DBW Motorsports Join Date: Nov 2011 Drives: 19BRZ PP, 16 M4 Location: ATLANTA, GA Posts: 67 Thanks: 36 Thanked 62 Times in 27 Posts Mentioned: 16 Post(s) Tagged: 0 Thread(s)	Just wrapped up installing the cosworth supercharger on my personal car here at the shop. Tuning was done in house by myself on e85. Currently I am still running the OEM header and full exhaust but with the cats removed as the cosworth header I have here is cracked in multiple places. I plan on fixing the header here and then putting it back on the dyno to calibrate it accordingly and will post the back to back results when I do so. Until then here are some pics and the dyno graph of the small pulley supercharger on e85. Doug __________________ Douglas W.

08-06-2019, 10:47 AM	#1439
weederr33 Airborne at your service Join Date: Sep 2014 Drives: '17 BRZ Series.Yellow Location: El Paso, Texas Posts: 6,325 Thanks: 4,528 Thanked 5,586 Times in 2,928 Posts Mentioned: 33 Post(s) Tagged: 2 Thread(s)	Very nice! __________________ Series.Yellowbird - http://www.ft86club.com/forums/showthread.php?t=122135 MS, CSCS, TSAC-F, CPT

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07-28-2019, 06:13 PM	#1431
sly Senior Member Join Date: Dec 2015 Drives: 2016 Cosworth 2.2 BRZ Location: TN Posts: 302 Thanks: 81 Thanked 185 Times in 112 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	I'm not getting knock anymore. Matt dialed back on the timing some, and that seems to have fixed it. I run 93 octane Exxon without any problems. Shell seemed to knock a little for me.

07-29-2019, 10:03 PM	#1432
botbs Senior Member Join Date: Aug 2012 Drives: 18 BRZ tS, 27 GRMN 86 Location: Canada Posts: 455 Thanks: 444 Thanked 289 Times in 137 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Please keep me posted if you guys solved the knocking issue. Thanks

08-03-2019, 07:46 AM	#1433
KyleWithFocus Junior Member Join Date: Oct 2012 Drives: Honda Civic driving lurker Location: Kansas City, MO Posts: 7 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I’m having a really hard time finding a replacement belt in stock in the US. Really making me have second thoughts about keeping this car around if finding something as simple as a drive belt is such a pain. Anyone have any idea where to look for replacements? Sent from my iPhone using Tapatalk

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