Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Super Stock

Thread Tools
 
Search this Thread
 
Old Mar 4, 2022 | 05:54 PM
  #1  
GregBBRD's Avatar
GregBBRD
Thread Starter
Former Vendor
 
Joined: Feb 2005
Posts: 15,228
Likes: 2,530
From: Anaheim
Default Super Stock

Here, at Precision Motorwerks, we've pretty much perfected the "stroker 928 engine", combining all different kinds of changes...way beyond just changing the crankshaft, rods, and pistons.
We've made these engines virtually bulletproof (as long as the owner doesn't do something really stupid.)
We've solved all of the "Porsche Engineering" issues, which have plagued these engines, from the very first to the very last engines.
And both the power and reliability of our stroker engines is well known.

However, we also build a large amount of stock engines....or rather stock bore and stroke engines.
And while we do incorporate some of the simple pieces/modifications that improve our stroker engines,
we recently decided to toss our entire "bag of tricks" into a stock bore and stroke GT engine and a stock bore and stroke S4 engine and see what happens.

The results are so fantastic, that we've decided to call these engines our "Super Stock Class" of Engines.

Horsepower and torque are up a minimum of 10%, all over the board. Throttle response is unlike anything we've experienced with any stock engine. Fuel economy, under normal operating conditions, is up 15-20%.
The engines run smoother and cooler.
These engines are complete different animals than their stock counterparts.
In short, they run more freely, more efficiently, with less fuel.

And we are very proud of this unique achievement.

Old Mar 4, 2022 | 06:13 PM
  #2  
Mrmerlin's Avatar
Mrmerlin
Team Owner
20 Year Member
 
Joined: May 2004
Posts: 31,233
Likes: 4,218
From: Philly PA
Default

How Much, How Much, How much for da pretty little bird?
Reply
Old Mar 4, 2022 | 06:23 PM
  #3  
Wisconsin Joe's Avatar
Wisconsin Joe
Nordschleife Master
10 Year Member
 
Joined: Jan 2013
Posts: 5,952
Likes: 325
From: Kaukauna Wisconsin
Default

Originally Posted by Mrmerlin
How Much, How Much, How much for da pretty little bird?
"If ya gotta ask how much, you can't afford it".

I'm going to guess, based on what I've heard the stroker motors go for, that the motor itself would cost somewhere near the GT it would go very well into would (and I'm thinking of a GT with a good motor in nice condition).
Reply
Old Mar 4, 2022 | 06:42 PM
  #4  
karl ruiter's Avatar
karl ruiter
Rennlist Member
20 Year Member
 
Joined: Jan 2003
Posts: 3,426
Likes: 223
From: Honolulu and sometimes L.A.
Default

If yah have to ask... Actually I'm kinda hoping that since no custom major parts that I might be able to afford this some day.
Reply
Old Mar 4, 2022 | 07:22 PM
  #5  
icsamerica's Avatar
icsamerica
Burning Brakes
5 Year Member
 
Joined: Mar 2018
Posts: 913
Likes: 371
Default

Originally Posted by GregBBRD
Here, at Precision Motorwerks, we've pretty much.
Reads like an infomercial. Pretty much? So there's room for improvment?
Reply
Old Mar 4, 2022 | 09:22 PM
  #6  
Mrmerlin's Avatar
Mrmerlin
Team Owner
20 Year Member
 
Joined: May 2004
Posts: 31,233
Likes: 4,218
From: Philly PA
Default

Im asking for all the people that wont, and myself
Reply
Old Mar 4, 2022 | 11:20 PM
  #7  
GregBBRD's Avatar
GregBBRD
Thread Starter
Former Vendor
 
Joined: Feb 2005
Posts: 15,228
Likes: 2,530
From: Anaheim
Default

Originally Posted by icsamerica
Reads like an infomercial. Pretty much? So there's room for improvment?
I never stop looking for ways to improve things.
Reply
Old Mar 4, 2022 | 11:45 PM
  #8  
Ducman82's Avatar
Ducman82
Veteran: Air Force
15 Year Member
 
Joined: Nov 2009
Posts: 6,984
Likes: 18
From: Marysville WA
Default

like watching a wizard practice his craft and perfecting his spells. Watching Greg work was always informative and amazing. This build was a long time in the making.
Reply
Rennlist Stories

The Best Porsche Posts for Porsche Enthusiasts

story-0

9 Vehicles Porsche Helped Engineer that Aren't Porsches

 Verdad Gallardo
story-1

9 Features and Characteristics That Only Porsche People Understand

 Verdad Gallardo
story-2

I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way

 Joe Kucinski
story-3

10 Most Unnecessary Porsches Ever Built (And Why We Love Them)

 Verdad Gallardo
story-4

Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner

 Joe Kucinski
story-5

This Builder Is Turning Heads With Its Slantnose 911 Creation

 Verdad Gallardo
story-6

Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

 Verdad Gallardo
story-7

Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

 Verdad Gallardo
story-8

10 Porsche Colors That Have More Personality Than Most People

 Verdad Gallardo
story-9

Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

 Verdad Gallardo
Old Mar 5, 2022 | 12:05 AM
  #9  
GregBBRD's Avatar
GregBBRD
Thread Starter
Former Vendor
 
Joined: Feb 2005
Posts: 15,228
Likes: 2,530
From: Anaheim
Default

Originally Posted by Mrmerlin
How Much, How Much, How much for da pretty little bird?
That's tough to answer...since we were doing a complete rebuild, anyway.
There's a bunch of the subtile things that we did, which don't add much to the stock rebuild.







Reply
Old Mar 5, 2022 | 02:36 AM
  #10  
The Forgotten On's Avatar
The Forgotten On
Nordschleife Master
10 Year Member
 
Joined: May 2012
Posts: 5,234
Likes: 437
From: Thousand Oaks California
Default

And here I thought super stock was just mixing and matching parts between cars like a Subaru

Just more things to look forward to as an option when I can get my engine down to you!
Reply
Old Mar 5, 2022 | 10:28 AM
  #11  
slownrusty's Avatar
slownrusty
Drifting
20 Year Member
 
Joined: Apr 2005
Posts: 2,908
Likes: 386
From: Houston, TX
Default

Typically when I work on my 928, I get "Super Stuck"
Reply
Old Mar 5, 2022 | 01:33 PM
  #12  
vanster's Avatar
vanster
Drifting
15 Year Member
 
Joined: Sep 2010
Posts: 2,355
Likes: 188
From: Oakland CA
Default

I do have problems with my GB 6.5 liter stroker. In 30k miles I have gotten one speeding ticket ($600) and I'm at the end of my second set of rear tires. Aside from that it runs like Rolex.
Reply
Old Mar 5, 2022 | 02:47 PM
  #13  
Jaguarpig's Avatar
Jaguarpig
Banned
 
Joined: Aug 2021
Posts: 32
Likes: 2
Default

Originally Posted by vanster
I do have problems with my GB 6.5 liter stroker. In 30k miles I have gotten one speeding ticket ($600) and I'm at the end of my second set of rear tires. Aside from that it runs like Rolex.
Be even better if it ran like a Grand Seiko
Reply
Old Mar 5, 2022 | 11:43 PM
  #14  
GregBBRD's Avatar
GregBBRD
Thread Starter
Former Vendor
 
Joined: Feb 2005
Posts: 15,228
Likes: 2,530
From: Anaheim
Default

Originally Posted by Ducman82
like watching a wizard practice his craft and perfecting his spells. Watching Greg work was always informative and amazing. This build was a long time in the making.
Yeah, it took me a minute to get to this point, making prototypes, testing them, perfecting them, and then actually making useful pieces.
You were here (wish you still were), so you got to see some of these pieces.

The great news is that I turned 70 in February....so I've got a whole bunch more years ahead of me to do this stuff.
Seriously, I think Kyle will continue with the business, when I'm done (soon), but I doubt that he will want to deal with the exotic pieces and will just work on keeping stock 928's on the road and doing restorations.
So I'm thinking that most of this stuff will just get pushed into the re-cycle bin and just be a forgotten footnote in the history of the 928.
Reply
Old Mar 6, 2022 | 07:11 AM
  #15  
928cs's Avatar
928cs
Race Car
20 Year Member
 
Joined: Aug 2003
Posts: 3,935
Likes: 738
From: Le Mans, France
Default

And do these "super stock" engines still look stock from the outside?
Reply



All times are GMT -3. The time now is 06:57 PM.

story-0
9 Vehicles Porsche Helped Engineer that Aren't Porsches

Slideshow: Long before engineering consulting became trendy, Porsche was quietly helping other automakers build everything from supercars to economy hatchbacks.

By Verdad Gallardo | 2026-05-15 12:44:44


VIEW MORE
story-1
9 Features and Characteristics That Only Porsche People Understand

Slideshow: Some brands build cars. Porsche builds traditions, obsessions, and a few habits that stopped making sense decades ago but somehow became part of the charm.

By Verdad Gallardo | 2026-05-13 18:46:13


VIEW MORE
story-2
I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way

Slideshow: Six years and 500 Rennlist articles later, these are the biggest changes at Porsche.

By Joe Kucinski | 2026-05-11 09:52:55


VIEW MORE
story-3
10 Most Unnecessary Porsches Ever Built (And Why We Love Them)

Slideshow: Some Porsches exist for very specific reasons-others feel like they were built just to see if anyone would notice.

By Verdad Gallardo | 2026-05-06 18:00:32


VIEW MORE
story-4
Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner

Slideshow: Choosing between the 911 GT3 S/C and 718 Spyder RS in 10 key categories to determine one surprising winner.

By Joe Kucinski | 2026-05-05 12:51:46


VIEW MORE
story-5
This Builder Is Turning Heads With Its Slantnose 911 Creation

Slideshow: A small Polish tuner has reimagined the Porsche 911 Slantnose for the modern era, blending 1980s nostalgia with widebody tuning culture and serious performance upgrades.

By Verdad Gallardo | 2026-05-01 10:49:43


VIEW MORE
story-6
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

Slideshow: Porsche has created a Japan-only 911 GT3 Artisan Edition that blends track-ready hardware with design cues inspired by traditional Japanese craftsmanship.

By Verdad Gallardo | 2026-04-28 19:37:40


VIEW MORE
story-7
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

Slideshow: Porsche's latest electric Cayenne Coupe blends dramatic styling with supercar acceleration, turning the brand's midsize SUV into a 1,139-horsepower flagship.

By Verdad Gallardo | 2026-04-27 19:39:30


VIEW MORE
story-8
10 Porsche Colors That Have More Personality Than Most People

Slideshow: Porsche's wildest paint colors aren't just shades-they're full-blown personalities on four wheels.

By Verdad Gallardo | 2026-04-27 19:38:13


VIEW MORE
story-9
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

Slideshow: The last of the Speedsters doesn't just close a chapter, it makes quite the bold, air-cooled statement.

By Verdad Gallardo | 2026-04-22 17:55:04


VIEW MORE