Well I haven't touched anything regarding the tranny and the engine mechanical stops (external) have not be played with either.
Where it shifts is where it shifts....

Brandon,

Your 60-90 time is unbelievable from your video. Your 60-90 time is nearly the same as your 30-60 time, around 8 seconds for both intervals. That is insane, I've never seen that before, in a street car under 600 horsepower. That's amazing. For example look at gsxr's times. He reached 30mph in 3.10 seconds. He reached 60 mph in 9.08 seconds. And, he reached 90mph in 21.35 seconds. So his 30 to 60 time was 5.98 seconds and his 60 to 90 time was 12.27. It took him more than twice as long to go 60-90 as it did to go 30-60. Also your time was two seconds slower than his from 30-60, but four seconds faster than his from 60-90. Are you sure there isn't some nitrus getting into your engine somehow from 60-90?

There is nothing but stock diesel getting into those combustion chambers
Maybe I was near a large field of cows at the time
Anywho, keep in mind on the video that I was starting from a stop, then turning and accelerating...not starting from straight on.

I was going to go take a few more videos today (since I have updated a few things since then...different turbo compressor) but it got dark too quickly. The speedo is accurate within a few MPH over the given range...nothing substantial.
On flat ground I can put the car well past 100MPH without really having to try...just keeping an eye on that pyrometer

Now towing....thats another story

Any estimates on max horsepower for Brandon's 300sd? From his video I would have to guess 200 horsepower.

The way he pulls from 60 on up makes me think he has 400 hp.

2 seconds 60 - 70, < 4 seconds 80-90 mph. There is definitely a lot of power there for the top gears, anyway.

__________________
1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)

I am having a hard time finding a place to dyno my car without emptying my college budget.

The car is very responsive to air density...some days it is really fast, others...just fast

I took more vids but haven't edited them yet...working on doing that...

I've put almost 3k on my car with this mod in place and haven't had any problems.

The stock pump and plungers are only capable of 20-25% more power than stock, I believe. With stock output at 120hp or so, I'd be really surprised if power is more than 150 or 160 tops. I wouldn't base power estimates on a video of an uncalibrated speedometer with no stopwatch visible, and no shot of the road ahead (downhill?)... lots of room for error there.

A performance computer of some kind (properly set up!) is preferable, or a dragstrip, or a dyno. Alternately, a GPS-checked speedo plus a stopwatch can be pretty useful on a FLAT road.

I don't post vids of downhill acceleration...really no point other than to impress with false info.
As I have disclosed before, at about 60MPH the speedo is about 2-3MPH off (larger tires doing most of the compensating for the speedo swap) as verified by my GPS.
I would put a GPS, a stopwatch, and the road all in the picture but then you wouldn't see anything of the dash, etc. I am only using my digital picture cam...don't have anything else.

I would presume the video speed is 1:1 because I never played with FPS...whatever time is on there is time in my car..

I can see a lot of room for error but I have taken care of almost all of it...assuming you don't need verified 1/4mile times on a scanned piece of paper to prove my performance

My friends 160HP Oldsmobile Cutlass Supreme with an automatic transmission is almost matched performance wise to my car (remember this is a gasser) and is a slightly lighter car. Previous to my adjustments he would usually smoke me off the line and clear through the speed range.

Now I have him off the line and can just barely pull away from him clear past 80...

Now we're getting somewhere. What is the year and exact model of the Olds? I'd like to find some Car & Driver or Road & Track test data on it.

I believe wols0003 has an extremely valid point... there's no way your car is getting from 30-60 and 60-90 in the same time interval. That's why I'm questioning the accuracy of the timing as well as the speedometer. No need for a GPS in the vid... set cruise at 30 and tell us what GPS says, then do the same at 90. The percentage error can vary with speed.

Anyone have a G-Tech you can borrow? A timeslip from the local dragstrip would be the easiest & cheapest way to get dead accurate data... for about $20, I can get 4-6 runs at the drasgstrip near me. I have all the data uploaded in MS Excel format if you want to see the typical numbers for a 124/603. I'd be happy to post a scan of my diesel timeslip after I get my scanner working. I have a pic of my best time in my E500 but that would only be a fair comparison to a Finnish SuperTurbo, lol...

__________________
Check out my website photos, documents, and movies!

........doh......lost that race by .031 seconds.

What happened.........you feed it a little propane in the middle of the run?

I believe it is a 96 olds cutlass supreme (2 door) with the 3.1 MP engine in it.
This engines spec out at about 155-160HP depending on year. His model has very low miles on it for its age (somewhere around 50-70k).

My thought is that the speedo would be less accurate the higher it goes since the 3mph around 55-60 turns into a larger percentage error at 80+...
When the cruise it set at 60...it reads about 57-58MPH on the GPS...I am unwilling to set it at 90MPH becuase if anyone understands oregon roads, the only place to do that is the freeway...

Nobody around here races except for the ricer groups and I have very little to do with them. My access to a mesuring unit is limited though if I can find funds enough, I will see about purchasing one. I generally can only do things to my car that my time (not money) allows (as the budget is rather small)

I'll see if I can get the rest of my videos edited today. The problem around here currently is that when the ambient is 80+ F its hot enough that my EGT's rise REAL quick (WOT to 60MPH results in 1200+F). During the night things get speedier however cameras don't work so good in the dark.

I am still thinking about an IC but am looking for a stock intake manifold to modifiy...

Not trying to fool you guys

Also please keep in mind (as I said before) I have changed my turbo compressor wheel/housing and have a modified exhaust system...

The compressor side of the turbo is physically larger on the inlet side and larger on the outlet (into the intake). I run about 10.5-11psi max (monitored continuiously) and my pyro is installed pre-turbo where all the cylinders meet up for the collector.

Intake is stock...

Pump has been turned up (however I forget how many turns from stock)...my guess is about 1-1.75

And yes...I carry a spare tire, jack, tire iron..and a whole plethora of goods in my trunk (1gallon water, tire cables, tools, wheel chalks, etc.)

That's all good, but power is much more limited by the fuel delivery... you could put custom headers and a Holset with 5-inch sewer pipes and it wouldn't give you any more power if the pump is already putting out all it can!

__________________
Check out my website photos, documents, and movies!

Yeah, I hate it when I lose by going too fast! The car had never run faster than high 13.9's so I figured a 13.90 dial was safe and I didn't back off at the line. Big mistake... oh well. Now I watch the other lane and back off if I'm ahead near the line. It's working, too... as seen in the photo near the bottom of this page!

Good job!

BTW, I vote for #5.