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Old 12-07-2021, 10:25 AM   #1
DylanRay
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Member#: 449826
Join Date: Jun 2016
Location: North Carolina
Vehicle:
2020 STI
Black

Default 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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Old 12-07-2021, 11:01 AM   #2
JSR84
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Join Date: Jun 2017
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2009 STi
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Quote:
Originally Posted by DylanRay View Post
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!
If you want to keep it relatively streetable then a set of S2 cam's would be a nice middle ground, but GETADOMTUNE cams would be my choice. But "street fun" and "FP black" don't belong in the same sentence, so consider that as well. Everything you're talking about here is pushing you power band hard right. Consider what you're goals are first so you can select the parts and turbo package that works to meet it.

Last edited by JSR84; 12-07-2021 at 11:35 AM.
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Old 12-07-2021, 11:39 AM   #3
DylanRay
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Originally Posted by JSR84 View Post
If you want to keep it relatively streetable then a set of S2 cam's would be a nice middle ground, but GETADOMTUNE cams would be my choise. But street fun and FP black don't belong in the same sentence, so consider that as well. Everything you're talking about here is pushing you power band hard right. Consider what you're goals are first so you can select the parts and turbo package that works to meet it.

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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Old 12-07-2021, 11:46 AM   #4
JSR84
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Quote:
Originally Posted by DylanRay View Post
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!

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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Old 12-07-2021, 12:04 PM   #5
cboggess
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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.
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Old 12-07-2021, 12:10 PM   #6
DylanRay
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2020 STI
Black

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Quote:
Originally Posted by cboggess View Post
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.

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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Old 12-07-2021, 12:13 PM   #7
JSR84
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Quote:
Originally Posted by cboggess View Post
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.
I think valve spring is pretty much a given when going to a bigger cam.
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Old 12-07-2021, 12:47 PM   #8
cboggess
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Originally Posted by JSR84 View Post
I think valve spring is pretty much a given when going to a bigger cam.
Just wanted to make sure.
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Old 12-07-2021, 02:11 PM   #9
benflynn
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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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Old 12-07-2021, 02:19 PM   #10
JSR84
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Quote:
Originally Posted by benflynn View Post
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.
Very good point.
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Old 12-07-2021, 03:27 PM   #11
K3rm1tth3fr0g
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I would highly suggest springs if you decide to do cams...
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Old 12-07-2021, 03:41 PM   #12
KillerBMotorsport
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Location: Virginia
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2005 WRX/STi
WRB of course

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Quote:
Originally Posted by cboggess View Post
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.
^ this right here. Stock cams will rev out to +7,500 without issue as long as you have the springs to support it.

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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Old 12-08-2021, 03:43 PM   #13
benflynn
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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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Old 05-08-2022, 09:44 PM   #14
snowdrift86
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Quote:
Originally Posted by benflynn View Post
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.
What are you revving out to with the stock cams? Also single or dual avcs?
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Old 05-08-2022, 10:38 PM   #15
benflynn
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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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Old 06-02-2022, 09:54 AM   #16
Jrae2424
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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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