mspiegle

As far as Andy's numbers, mind you his car is untuned. He has never tuned that car since he started the project. There is definately more power in there to be harnessed. I'm also curious what kind of 1/4 mi times the other cars are pulling. Andy has a verified 12.4. If you compensate some track issues in, he's got a 12.1. With some tuning and slightly larger rear tires, he will run 11s EASILLY. Perfectly streetable.

Also regarding his dyno numbers, he claims 350/375 @ 7psi i believe. I honestly don't think he was even running 7. More like 6.6 - 6.8, but those are smaller details. It isn't always easy to sit and stare at your boost guage when you're driving... me as a passenger on the other hand can have that luxury.

Jim bailey - 928 International

getting back to reality ? .... Marc T comments ..."Yeehah George...you will be the first supercharged ORR racer to ever succeed in making a pass at 200 mph and finish the race...you could do it!
.Too bad no other supercharged 928s are up to the challenge, we could rule...." ..............

....Yes Marc , you have driven a 928 faster in a straight line than anyone else has cared to do . You must admit that you have not driven the open road time trials to WIN UNLIMITED but only briefly accelerate to speed for the radar traps to set the afore mentioned top speeds then cruise (at speeds about what a stock S-4 can run ) to the finish while other competitors attempting to WIN may DNF . I believe your car has even been "disqualified " for going too slow . Is there some reason WHY you do not attempt to WIN THE RACES ? I really question how you can put down those who TRIED TO FINISH AND WIN but DNFed and lost ( some may have died ). While you on the other hand lost by not TRYING ................ now tell me again how reliable the car is .....how it was driven to and from each event . Now tell me how many unlimited open road races you have WON or even TRIED to win , looks to me like that just might be the same number of "open road races" as any one reading this post has tried to WIN .....................You have driven a 928 faster (for a few moments) in a straight line than anyone else has cared to do .......I would have left it at that had you not continued to boast about what you did and what it really means while attempting to discredit the efforts of others ... ............................ I know we are not supposed to throw sand in the sand box but I think it equally poor form to pee in it .........

GlenL

One thing people aren't counting in their calculations is that the price of a stroker includes a complete rebuild. The boost crowd is, on the other hand, counting on a solid engine, for free. (Or maybe that's in there somewhere and I just didn't wade deep enough.)

jorj7

Jim,

I really hate to get into this, but I only know of 2 people that have averaged
over 165 mph in an open road race in a 928, both of them were driving the
DEVEK white car. I know that any stock or even most modified 928s would
could not time maintaining 165 mph over a 100 miles in one of these events,
and so far noone else has.

There have be 2 others that have averaged over 160, and 1 of those was in
another DEVEK stroker powered 928. That's pretty impressive to me.

I'm going to try to avg 160 mph and maybe higher, not this year, probably
next, then I'll be able to speak with more authority on what it'll take to do it.
Until then, I won't discredit anyone else's accomplishments. Now I know
that's what you are trying to point out to Marc, but that doesn't mean that
it ok for you to do. Just my take on it.

Drewster67

I just dont understand what everyone is disagreeing about.

This is what I see being discussed or should I say debated.

1. Forced Engines put down great numbers at a "minimal" cost
2. Stroked engines also put down great numbers at a "substantial" cost.
3. How many shark owners car to drop 20k on stroked motor for daily driving? A handful if any.
4. How many shark owner care to drop 5k on a forced daily driver....myself for one and countless other I assume.
5. Stokers are for the track, end of story that's all she wrote, IMHO.
6. Forced sharks may be used for daily driving with little or no issues at all - (emissions)
7. Who cares how you get your power, just as long as it fits your means and wants.
8. Longevity is something that is still being R&D?. Jim B. (or Mark A) - any comments on how many races Mark has ran without a rebuild or major problems?. Just curious

What I am gathering is this .....it comes down to what you can afford to do, as like anything. 500RWHP is 500RWHP not matter if it's stroked or forced.

Different strokes for different folks.

BC

GlenL - That is what I was trying to touch on in that previous post that was ignored here - some realistic numbers on what can be done with time and effort on your own to prepare the engine itself for higher boost pressures.

GlenL

Brendan,

Checked your other post. It's clear costs mount up quick when you get serious about improving the engine internals.

As I'm deep into my engine, let me add some costs for that. These will vary, but give some idea.

Gasket set: $450
Rings: $180
Rod Bearings: $90
Main bearings: $125
Misc nuts, washer & studs: $100

That's not too bad, until you get in the WYAIT parts. The killer is the shop time. Cylinder heads will be $600 and the rebuild is around $3000. I was quoted $1700 labor for just doing the short block. To have the engine re-built "like new" professionally will be about $4500, as long as everything goes well, not counting the engine pull/replacement.

Jim - It's the spoon. There is no spoon .

V-Fib

You Guys really crack me up.

Entertaining and somewhat enlightening thread.



Anthony Tate
79/928 Silver Metallic

Tony

Get a video camera at your next dyno run. You will be amazed at some of the details or events that you would miss as your foot goes to the floor and your eyes to the tach. Try to place the tach...boost...fuel pressure and air/fuel ratio in the cameras view. May be a bit tough but the more info you can go back and review the more guessing it takes out.

"lets go to the video tape!!!"

Jay Wellwood

Yup....couldn't of said it better myself!

(no pun intended)

GlenL

Let me clarify that this is not quite a "like new" price as there's no align hone, rod recondition, wrist pin or block deck work included. Just dis-assembly, cleaning and re-assembly with new bearings, seals and rings. The head work is a full head job with valves ground and seats cut.

John..

When I inquired about having my bottom end honed and built I was quoted $10,000. That is 1/2 of what my car is worth. I enjoyed doing it myself, but it was time consuming.

Jim bailey - 928 International

George you are correct and 165 mph is a fast average speed . Thanks for making it clear that the much mentioned 200 plus was only for a short time . That is very fast no doubt about it , I just had problems with the inference that it was part of a winning effort or even an attempt to win the unlimited class then using it as a "club" to beat up on others . I wish you the best with your racing efforts but IF you put a blower on it HOW are you going to keep it down to "only" 160 mph ?

Fastest928

Just to make if clear, the 200 plus mph was for 5-11 miles at a time, multiple times during an event...in fact, the event that Susan got DQ's for too slow a trap speed, had the three other trap radared at over 200 mph and was averaged way above previous efforts.

I was also DQ for going too fast when we were tech'd for 188 mph or something like that, through a few traps, and also had a much higher average speed.

People lose their lives in this sport, it is not a controlled environment like Willows....if you make a mistake, you do not get the next lap to improve, ,you die or suffer great bodily harm...like it or not, it takes more spplication of technology and ***** than sitting on your computer and mouthing off.

Think it is so easy to go 210 mph...then get off your )*( and prove how easy it is...



Marc
DEVEK
550 rwhp
210 mph


All this in a car that we drove to the event and back...

jorj7

Jim,

I'll have the same problem most everyone else would have, money....
It take more then a powerful motor to run an unlimited car, the suspension,
brakes, and aerodynamics have to be updated, then you have to add
a roll cage, fuel cell, racing seats, fire system, and tires rated at over
200 mph. I've had Marc help me with the suspension and brakes, and
I'm getting help from Tim on getting more power, but I still need another
$8-10K to get all the safety equipment. I also need to get some more
experience driiving at those kinds of speeds, so it'll be more than a year
before I can try and get over 160 mph average.

This year, even with more power, I would be limited by a 168 mph tech
limit. So 155 mph avg. will be the fastest class I''d be allowed to enter.
I'll use this as year to learn more about the car at speed, and any limitation
of the current technology as it's applied to our cars.