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      04-25-2022, 02:12 PM   #1
Sales@RKautowerks
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RK Autowerks Forged S58

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Hey guys,

Just wanted to share some updates with our shop car. We went ahead and built our engine to ensure we didn't have any failures.

Engine mod list is as follows.

-Sleeved block
-625 aged studs
-Fire rings
-Forged rods and pistons

We are building the top end as well but wanted to see how far the stock turbos could go. The cylinder head will be CNC'd, oversize valves, our custom cams, and full valvetrain. We're expected to have that done in the next month or two.

We've found stock turbos will get to about 34psi, results are below.


Complete mods list:
-Eventuri intakes
-RK port meth
-RK downpipes
-RK built engine
-Pure stage 3 transmission


Tuning provided by Utku Noa Performance
Stock: 448whp/445wtq
Stage 1: 511whp/523wtq - 93 octane
Stage 2: 566whp/581tq -93 octane
Stage 2.5: 682whp/628wtq -93 octane + meth
Stage 3: 696whp/666wtq -race gas + meth turbos maxed
Testing was all done on same day on an AWD mustang MD-1100SE

In the next few weeks we will be finishing our billet manifold, hybrid turbos, full frame twins, and single turbo upgrade
































Heres a teaser of the twin setup and the single setup.





Thanks
-R

Last edited by Sales@RKautowerks; 04-29-2022 at 03:40 PM..
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      04-25-2022, 05:01 PM   #2
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would be even lighter with carbon bucket seats huh jk very impressive good work 700 all whell on a mustang dyno what is that over 800 crank hp?
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      04-25-2022, 05:14 PM   #3
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Very nice!

I actually believe these results; meaning not inflated. By chance, do you have a boost curve/plot.
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      04-25-2022, 05:19 PM   #4
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Very nice !
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      04-25-2022, 05:53 PM   #5
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Man, this is killer. I love some good ole engine pr0n!! This platform is amazing. This car is already running within half a second of a Plaid. The 1/8th on the plaid 6.0 @120. 5.44 60-130 is nuts.
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      04-25-2022, 08:49 PM   #6
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What turbo do you plan on running for the single setup? Once femto takes US DMEs again I plan on going that route. Would love to hear how it sounds and see how the torque curve changes! Keep us updated.
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      04-25-2022, 11:46 PM   #7
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Just WOW ...
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      04-26-2022, 07:19 AM   #8
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1,000hp+, here we go!

Wow, you guys don't mess around. Great detailed information. Perfect for folks that are planning to upgrade the S58 but don't know about the different stages and options available.

As rashannon81 said, once Femto engages with U.S. market again, I'll be seriously thinking about going that route; my target is flexfuel/e85, w/ conservative tune that yields 650hp/650tq.
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      04-26-2022, 09:50 AM   #9
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Nice
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      04-26-2022, 04:41 PM   #10
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Looks fancy! when is expected to be back in the car to test?
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      04-27-2022, 06:54 PM   #11
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This is what happiness looks like.
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      04-27-2022, 07:04 PM   #12
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What made you guys sleeve it, do fire rings and oversized valves? Can we get answers on either thread?
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      04-27-2022, 07:26 PM   #13
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      04-27-2022, 07:28 PM   #14
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oh snap!
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      04-27-2022, 08:12 PM   #15
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Quote:
Originally Posted by connord View Post
What made you guys sleeve it, do fire rings and oversized valves? Can we get answers on either thread?
Why wouldn't you if you're targeting big power?

Airflow, block strength and reliability. I'm sure they're targeting well over 1K RWHP.
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      04-28-2022, 12:36 AM   #16
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Beauty and a beast
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      04-28-2022, 02:00 AM   #17
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Truth in engineering. Wow.

What's the price if I may ask?
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      04-28-2022, 05:13 AM   #18
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Quote:
Originally Posted by cfm56d7b View Post
Truth in engineering. Wow.

What's the price if I may ask?
I seem to remember him doing a Facebook post a few days ago saying it would be priced around $12k.
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      04-28-2022, 01:39 PM   #19
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Total eye candy.
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      04-28-2022, 01:57 PM   #20
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Quote:
Originally Posted by eric97hoh View Post
would be even lighter with carbon bucket seats huh jk very impressive good work 700 all whell on a mustang dyno what is that over 800 crank hp?
I plan on getting lighter seats, wheels, and few other bits.

i'd say 800 is pretty safe number.

Quote:
Originally Posted by BadBoostedBMWM3 View Post
Very nice!

I actually believe these results; meaning not inflated. By chance, do you have a boost curve/plot.
I will upload the boost curve for each log, give me a few days.

Quote:
Originally Posted by Info@mad-us.com View Post
Very nice !
thank you

Quote:
Originally Posted by Limegrntaln View Post
Man, this is killer. I love some good ole engine pr0n!! This platform is amazing. This car is already running within half a second of a Plaid. The 1/8th on the plaid 6.0 @120. 5.44 60-130 is nuts.
thank you

Quote:
Originally Posted by rashannon81 View Post
What turbo do you plan on running for the single setup? Once femto takes US DMEs again I plan on going that route. Would love to hear how it sounds and see how the torque curve changes! Keep us updated.
trying out a variety of the garrett G series, starting with G25-660.

Quote:
Originally Posted by destoyan View Post
Just WOW ...
thank you

Quote:
Originally Posted by GixY2K View Post
1,000hp+, here we go!

Wow, you guys don't mess around. Great detailed information. Perfect for folks that are planning to upgrade the S58 but don't know about the different stages and options available.

As rashannon81 said, once Femto engages with U.S. market again, I'll be seriously thinking about going that route; my target is flexfuel/e85, w/ conservative tune that yields 650hp/650tq.
ready when you are!

Quote:
Originally Posted by mike@x-ph.com View Post
Nice
thank you

Quote:
Originally Posted by connor@labworx View Post
Looks fancy! when is expected to be back in the car to test?
all the data above minus draggy times are for the engine.

Quote:
Originally Posted by M3ANSPEC View Post
This is what happiness looks like.


Quote:
Originally Posted by connord View Post
What made you guys sleeve it, do fire rings and oversized valves? Can we get answers on either thread?
because we've found its necessary on the S63, so the S58 isn't going to be very far off.

Quote:
Originally Posted by _E90S65_ View Post
thank you

Quote:
Originally Posted by Chubbiejones View Post
oh snap!
thank you

Quote:
Originally Posted by ChrisM4 View Post
Why wouldn't you if you're targeting big power?

Airflow, block strength and reliability. I'm sure they're targeting well over 1K RWHP.
shooting for at least 1000whp with new turbos

Quote:
Originally Posted by dezzracer View Post
Beauty and a beast
thank you

Quote:
Originally Posted by cfm56d7b View Post
Truth in engineering. Wow.

What's the price if I may ask?
Pricing will most likely start at the 12-14k window for a basic build.

Quote:
Originally Posted by BMWM4CX View Post
I seem to remember him doing a Facebook post a few days ago saying it would be priced around $12k.
It's not confirmed but very close.

Quote:
Originally Posted by BPMSport View Post
Total eye candy.
Thanks papi.


If there are any other questions or concerns, please let me know. Thank you to everyone who's contributed so far.


-R
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      04-28-2022, 02:06 PM   #21
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edit: double post
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      04-28-2022, 11:12 PM   #22
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Love this build
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