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12-07-2021, 10:25 AM | #1 |
Scooby Newbie
Member#: 449826
Join Date: Jun 2016
Location: North Carolina
Vehicle:2020 STI Black |
Type RA needs more RPM's Cam suggestions
Background on the car/motor:
2020 Subaru STI with Type RA motor and 7k miles on it. Has TGV deletes, ID1700s, Walbro 450 pump, -6 PTFE lines, Flex Fuel, ETS V2 EL Header, 44mm EWG, Catless DP, FP Green UHF Turbo, ETS FMIC, all the other basic bolt on goodies. Making 440whp/390wtq at 24psi right now, putting a clutch in this weekend so we can turn it up to 30-32psi. I'd really like to get more than 7000rpms out of this motor before going to fully built closed deck motor. I'm curious if anyone has any feedback on using the 272 or 282 cams on a Type RA motor? What cams did you use and what is your new redline? I spoke with Forced Performance to make sure the FP Green (or if I upgrade to the FP Black) that neither turbo would fall on its face at 7500-8000rpms. I know that the power I'm pushing through this motor is already at a level that will eventually destroy it, I'm not super concerned with the longevity as I have plans to start building a closed deck block for it this summer anyway. Any feedback is greatly appreciated!
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12-07-2021, 11:01 AM | #2 | |
Scooby Specialist
Member#: 469585
Join Date: Jun 2017
Chapter/Region:
W. Canada
Vehicle:2009 STi White |
Quote:
Last edited by JSR84; 12-07-2021 at 11:35 AM. |
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12-07-2021, 11:39 AM | #3 | |
Scooby Newbie
Member#: 449826
Join Date: Jun 2016
Location: North Carolina
Vehicle:2020 STI Black |
Quote:
I've been in FP Black cars with stock cams and they still do great on the street. But everyone drives different I cruise at 3000+ everywhere with the stock cams and my FP Green. Its not a daily driven car, just a toy but I do drive it to work at least once a week if the weather is nice. I like the suggestion of the 270 cams to keep it middle ground. My tuner is telling me to go with the 280s that they offer a pretty big jump over the 270s. My end goal with the car is deep 9s with a built motor and a rotated 6466 in the future. But I'm not going to just jump into that, I want to work my way up and play with stock location turbos to see what they can do! |
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12-07-2021, 11:46 AM | #4 | |
Scooby Specialist
Member#: 469585
Join Date: Jun 2017
Chapter/Region:
W. Canada
Vehicle:2009 STi White |
Quote:
Ethanol makes them ok, but there are other combos that will make the same if not more power and still retain some low end power. Rotated and a G-Series, You'll probably even keep the engine alive longer with a setup like that and a RESONABLE tune. If you're goal is drag racing then go with a larger cams. Hell, even the 280's don't idle and drive that bad thanks to the wonders of DAVCS. |
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12-07-2021, 12:04 PM | #5 |
Scooby Specialist
Member#: 30804
Join Date: Dec 2002
Chapter/Region:
SWIC
Vehicle:87 Yugo Red |
If you want more revs then just throwing bigger cams at it is not the solution. I would recommend good valve springs.
With an FP black, and the other bits your stock bottom end will be on very short time. |
12-07-2021, 12:10 PM | #6 | |
Scooby Newbie
Member#: 449826
Join Date: Jun 2016
Location: North Carolina
Vehicle:2020 STI Black |
Quote:
I would definitely do springs with the cams. I'm going to build a new short block this summer and this type RA will be coming out then so as long as it doesn't absolutely destroy itself I'm not to worried about it. If we keep the torque low in the tune and bring the power on higher up it should last me awhile. |
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12-07-2021, 12:13 PM | #7 |
Scooby Specialist
Member#: 469585
Join Date: Jun 2017
Chapter/Region:
W. Canada
Vehicle:2009 STi White |
I think valve spring is pretty much a given when going to a bigger cam.
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12-07-2021, 12:47 PM | #8 |
Scooby Specialist
Member#: 30804
Join Date: Dec 2002
Chapter/Region:
SWIC
Vehicle:87 Yugo Red |
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12-07-2021, 02:11 PM | #9 |
Scooby Specialist
Member#: 515308
Join Date: Jun 2020
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If u pop it before u build another it will cost 2-3k more, half a dozen extra parts will be hurt, hopefully not ur cam caps and nice new cams, but oil cooler, pick up, pan, avcs gears, solenoids(maybe), he’ll even turbo can take a hit if you process enough bearing through it.
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12-07-2021, 02:19 PM | #10 | |
Scooby Specialist
Member#: 469585
Join Date: Jun 2017
Chapter/Region:
W. Canada
Vehicle:2009 STi White |
Quote:
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12-07-2021, 03:27 PM | #11 |
Scooby Specialist
Member#: 508105
Join Date: Nov 2019
Chapter/Region:
NWIC
Location: Greater Seattle Area
Vehicle:Link G4X flex tuned 02' EJ205 20G 6MT wagon |
I would highly suggest springs if you decide to do cams...
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12-07-2021, 03:41 PM | #12 | |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
Quote:
Since you're going to go bigger turbo eventually anyway, by the sounds of it, just jump now. The bigger turbo would be kinder to the OEM block as well vs pushing the FPGreen to squeeze more power out of it. It's likely the smallest financial burden as well, because you can sell an FP green and get some money back. Selling stock cams... well, who wants those |
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12-08-2021, 03:43 PM | #13 |
Scooby Specialist
Member#: 515308
Join Date: Jun 2020
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I went with stock cams and bc1600 springs when I built(or rebuilt I guess) my 257, springs made it noticeably more rev happy. With my 4.44 5mt it’s always high in the rage. Next time I’ll go 10:1, only regret.
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05-08-2022, 09:44 PM | #14 |
Scooby Newbie
Member#: 273920
Join Date: Feb 2011
Chapter/Region:
AKIC
Location: Wasilla
Vehicle:05 Legacy GT Regal Blue Pearl |
What are you revving out to with the stock cams? Also single or dual avcs?
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05-08-2022, 10:38 PM | #15 |
Scooby Specialist
Member#: 515308
Join Date: Jun 2020
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Rev limit is set to 7600. Only usually get there when banging the limiter in first. Sometimes first goes faster than I expect.
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06-02-2022, 09:54 AM | #16 |
Scooby Newbie
Member#: 422118
Join Date: May 2015
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[quote=DylanRay;46669090]Background on the car/motor:
2020 Subaru STI with Type RA motor and 7k miles on it. Has TGV deletes, ID1700s, Walbro 450 pump, -6 PTFE lines, Flex Fuel, ETS V2 EL Header, 44mm EWG, Catless DP, FP Green UHF Turbo, ETS FMIC, all the other basic bolt on goodies. Making 440whp/390wtq at 24psi right now, putting a clutch in this weekend so we can turn it up to 30-32psi. I'd really like to get more than 7000rpms out of this motor before going to fully built closed deck motor. I'm curious if anyone has any feedback on using the 272 or 282 cams on a Type RA motor? What cams did you use and what is your new redline? I spoke with Forced Performance to make sure the FP Green (or if I upgrade to the FP Black) that neither turbo would fall on its face at 7500-8000rpms. I know that the power I'm pushing through this motor is already at a level that will eventually destroy it, I'm not super concerned with the longevity as I have plans to start building a closed deck block for it this summer anyway. Any feedback is greatly appreciated![/QUOTE As someone once asked me, please let us know how long this lasts. |
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