James Bailey

Devek went out of business long ago. But the engine from the white car lives on and has done 200 MPH plus on a couple occasions in its new home.

Rob Edwards

Spring/Summer/Rest of the Year Special: Free test drive of my stroker with purchase of Greg Brown 6.5L stroker.

928Man, to get 500 crank hp in a normally aspirated stroker is going to require a non-stock intake. Fortunately, that's not a problem, just incrementally more expensive.

dr bob

How Fa$t Did You $ay You Wanted to Go?

dprantl

It runs great.

Well, the kit I have on mine is an older kit (eaton M112-based) that is no longer made. The evolution of the kit (Autorotor TS) is now being developed by DR from 928 Specialists, although it is still not generally available. Then there is the Murf Vortech kit that has the most customers thus far, and also 928 Motorsports has a centrifugal kit. I think you could buy a kit with installation for slightly under $10k maybe? Apart from that, there is a mid/rear mount turbo kit with a similar cost, as well as a more expensive twin turbo kit.

It has been my daily driver for 3 years now. I have put ~35k miles on it. It now has over 236k miles, and I am reasonably sure the headgaskets are original. The supercharger has been on it since it had ~170k miles, so ~65k miles total. Driveability is all in the tune. I have a Sharktuner so I can do as I please. However, the different kits come with a chip so driveability is same as stock until you step on it, then you have a great deal more power at your disposal.

Dan
'91 928GT S/C 475hp/460lb.ft

GregBBRD

Way, way cheaper to supercharge than build a stroker. By a factor of 5. More to get 500 horsepower.

However, I think Mark Anderson (928 International) said it best: "If you don't mind opening the hood and fixing something every week, a supercharger can be adequate...until the engine suffers a failure from the increased boost. If you want to turn a key and not fuss with it, a stroker is probably the way to go."

I had a 450 horsepower stroker running around town that was driven by an attorney. We "got" to change the oil once by the time it had 35,000 miles on it. Nothing else was touched. He had a bad radiator and had to add a quart of water every couple of months.

karl ruiter

I think I agree with your reasoning 928man. Regardless of what the market says at the moment a late 928 was a $80K to $100K car. 20 years later that is more like $200K in current money. If you look at some of the list members cars they certainly will stand next to a new $150K to $200K car and not be ashamed at all. So you are in $20k for a really nice stating point car, $20k for a gb stroker, $6k for a pc interior. For similar money you could get a new Shelby Mustang....not a tenth of the car IMO.

svp928

Jim, you do good work- why are you stopping?

Steve

pcar928fan

I think the numbers are a little light... I suspect once tuning is done and you are driving a stroked motor that is PERFECT and just like Greg said ready to run when you turn the key and requiring nothing more than a full tank of gas and oil change... $30k is probably the proper budget...maybe $35k, but I have not done it so I am just going by what folks have talked about here and there over the years... BTW, I tend to agree on the boosting issue. Not gonna do it on my cars. Well tuned they seem to run great...how many miles though? No one really knows, but I know it is less than you will get from a stock motor...

Interior by Paul Champagne would be the icing on the cake there! No doubt about it. That could be inexpensive if you add a few custom bits here and there (as I have) or cost a small fortune if you you have EVERY SINGLE PART done right! The latter would be my preference! ;-) (along w/ a GB stroker btw!)

The problem is stability control and gear box. We don't have good ones of either and today's cars are LIGHT YEARS ahead of 928's in both. SMG's, F1's etc on the "manual" side and tiptronics and/or PDK's on the auto side. We just don't get that with the 928 and adding one would be VERY DIFFICULT if not impossible.

I love your thoughts and I love that we have so much development going on with these cars and I hope many will take their cars and make them gorgeous and perform like most of today's top models, it will only help to increase values and respect for our cars!

karl ruiter

I think I know it is more than $20k for a gb stroker. But I just can't bring myself to say it. Growing up I always wanted a 930, which was about $30K. Over time that became a milestone of wealth for me. As the cost of something gets closer to the price of a 930 it seems like a lot more money. So when someone says they will remodel my kitchen for $60K I think "I could buy two 930s for that: one to roll and one to keep".

bigmac

Get it blown by Murf, if it a 90, figure on replacing the driveshaft as well, Murf broke mine on the way to the Dyno.

LEADASS

+1 MURPH! Buy a 928 INT half priced motor in Dec. if you're worried. It's still cheaper than a stroker. Man I want a stroker soo bad.

mark kibort

how much for a GB short block? got to figure, if you can get the crank for $4k, rods and pistons for another 3-4k, that the machine work to get the block to 968 piston diameters for $1k, the rest is labor an assembly work. many of us have put motors together and can certainly just slap parts together that are stock and dont need checking. but, I would think the main reason that the motor cost so much to build from GB is the attention to detail and maybe it includes installation in the car too. I forget how many hours went into building Scots motor and installation, but let me tell you, its a lot of time.

Is there a way to build up from a short block to save money. maybe GB can build a few of these and have them ready to go. i know the nicasil build is tricky and more critical for choosing types of rings, etc. the porsche 968 pistons just use the stock rings, and it all just goes together, after a machine shop does the balancing of the rotating assembly and carves out an 85 block.

Like I said, im just asking if the stroker builds for $30k is full turnkey or is that just to pick up an entire engine, with all checked and refurb parts on it, your parts on the short block, what? Installation in the chassis and some run time on the dyno?
If so, then i can believe it. Devek would charge near $18k if you brought your 928 into their shop, 3 -10months later, you would have a running stoker in your chassis, that might even pass smog.
get more crasy with the requirements, like heads, tuning, etc, and that number could double.

I know Todd from GreenBay, built me an AWESOME stroker motor, but I dont think that is his main business. probably on par with what GB does as far as the short blocks go, but as far as the oiling issues and race builds, that might have to go in GBs corner, due to his experience.

for me, Im only good at stuffing the stock parts in a stock block with everything to porsche spec and tollerance.

928man

Well, I'll answer everybody individually:
Jim- What car did the devek engine go into?
Rob- What kind of design for intake and rough idea of what it would cost, somebody mentioned new intake for 928S4 is $2500, how possible?
Dr Bob- HA, HA, yeah, I want to match F428 Ferrari 0-100 in 6.7 seconds!!! And not spend $280K !!!
Dan-nice looking car, you've obviously had great luck with your S/C setup, with my luck the engine would blow up!
Greg- As you say a stroker would be less complicated but the rest of the car would have to be upgraded to match the enormous 500HP-600HP
Karl- I agree with you about the value of our 928's in todays money, just imagine the selling price today, probably $200K as you mentioned
James- I think you are right about S/C, it is an unknown factor for engine longevity, and more complex than a stroker for maintenance. Yes old 928's don't have PDK, F1 trans,etc but I would get a kick out of
spending $60K and performing like a $200-$300K exotic. I have the greatest respect for the 928 and keep thinking back to the Devek car!!
Big Mac- Would buy 89 or later 5spd for S/C or Stroker.
Brian- Half priced motors from 928 Intl. in Dec?
Mark- I like your idea, stroker must be done right, attn to all details and installed & tuned in the car! I don't think I would want stock parts, want 500-600HP range. I know sounds crazy but if I make it big in my new business, later I will do it! My goal is to match F428 performance 0-100 - 6.7 seconds, by the way Ferrari gets that 670HP from their V8 ! Maybe $60-70k when done. Bill

dprantl

236k+ miles on the odo with 65k miles supercharged and still going strong is not good enough for you? So a stock motor will go for 750k miles, and boosted it will go for 500k, and this matters? I think you guys are kidding yourselves if you think a properly boosted 928 engine is being stressed. 100hp/liter forced induced is nothing at all special. The 20 year old SAAB sitting out in my driveway came that way stock from the factory and has 200k miles on it now, still running great...

A supercharged engine will only blow up if the tune is bad and it knocks/detonates too much. It doesn't really have anything to do with luck.

Dan
'91 928GT S/C 475hp/460lb.ft

928man

Mark- P.S. The ferrari F428 with 670HP is no lightweight car at 3,490 lb ! I would have guessed it coming in at 2800-2900 instead, by the way, every once in a while I play your racing video, really enjoy it, Bill.