odurandina

Lart gave me a big head start today on getting my soon to be modified gauge cluster sorted.... Then i took his son on a launch through 1st and 2nd gear in the Sledgehammer which has been running at full power (since we swapped the connections of two vaccuun hoses that were incorrectly switched)...

Then the dad (Luis) took me for a launch in that blue 944T he obtained recently... Lighter car than mine by maybe 200~250 lbs...470hp ....that's the fastest car i've ever been in. That ride was terrifying...

Lart was spinning the wheels at 45mph when the afterburners kicked in. Whomever purchases it can have one hell of a 944T engine... and probably longivity if they don't beat on it. If i'm honest' they should just get the whole car and put their desired suspension on, because that car is incredible.

lart951

Thank you Allen

gruhsy

I thought JBrown posted it was around 410hp? Was there another dyno post at 470 after Chris White tuned it?

Voith

Wow, never thought I'd hear that from you.. And for porsche 4 banger.

odurandina

^^ first 190mph four cylinder I've been in. and probably be the last.
I was shocked by the smoothness of that engine from inside the cabin.
can't even begin to imagine the top end with the correct 944/T transmission combo.

fingers crossed but getting closer to getting the tach/speedo working.....
then, i'll have a bit of cosmetic touchup left to do with the 4 bezel rings and cf backing.

despite the slightly larger gauge housings, I was able to preserve the cluster.....
still, getting everything to fit into the panel was a p.i.t.a......
first, I made the diameter of the cutouts wider by about 5/32" with a special 36 grit sanding dowel I made (for the redo of my front lip spoiler ducts, after some recent damage)
next, I had to rip out 2 circuit boards behind the original speedo, and (that) speedo still has 2 more boards mounted on it (wtf).
but the other gauges remained functional.

working with the cf on this tight board is a f_cking p.i.t.a...
the camera makes it look all effed up.... but it's just reflections messing with the lens
looking at it with your eyes, (it's fine).

UPDATE;
tach is not working properly reading about 45~50% of the actual....
is it possible they sent me an 8 cylinder tach? I believe the LS sends a 4 cylinder signal.
GPS speedo and everything else is 100% ballz on.....

odurandina

In the time after swapping to the high output pump, the problem of too much switched current, re; the ignition switching on the combined [computer + fuel pump circuit] eventually stressed the electrical box to the point of internal arcing and subsequent relay failure.... the result, (a common problem with early Chevy efi systems), produces a result quite similar to our DME relay issues.... I went about searching the internet and found where to check for a burnt relay... opened the computer hatch and found the suspect relay was clearly 'burnt'.... The events that brought this discovery proved yet again, that a good amateur mechanic like Doug Bray can keep this beast running indefinitely.... i didn't want to go near it, but Doug went straight to work......

By re-routing the fuel pump circuit and simply running a pigtail off the ignition wire into a new, dedicated relay box, and by changing the oem 14 (or 16) gauge wire to #10 wire, the high amps/high heat running on 1 circuit is now distributed to 2 low amps/low heat circuits.... Now my computer is running cool, and with plenty of juice.... With about 4 hous of work, Doug ascended to legend status... because not only do i have a perfectly running engine with just the single turn of the key, but this relatively easy upgrade can be done for the 944/968's running the oem engines. .... re; no more DME relay issues.....


/

odurandina

from a recent thread


When pondering your next non-turbo or turbo the n/a engine build/s
before committing thousands of dollars, an often overlooked engine combo
for a serious street or race car w/ 550~625 reliable horses.
consider an engine combination perfect for dry or wet sump
already track tested, and proven to deliver time and again.
It features proven modern internals from reliable parts manufacturers.......
with barely a few tweaks. It sounds god awful expensive:
but it's not close to that. Take a closer look to how well matched
the flat torque curve and long, top end power is for our 3000 pound cars!

Racers w/ sumped V8's should run a low displacement LS7 straight off.
Street: run a big triangle resonator/s, w/ full Magnaflow, and she'll purr like
a big cat....
and keep going and going and going straight up to 7500rpm (peak),
8000 and beyond---still be pulling >540 hp......
Brothers and sisters: hiding in plain sight.....
The same engine combination used on the Ultimate Aero to break the
record for fastest production car a decade ago, (twin turbo's)
Look at the (n/a)'s insane torque and hp curve.
Drops right in/ not unreasonably priced to own and drive....
http://www.superchevy.com/how-to/eng...m-road-racing/


i'm running the same/similar forged internals as the Thomson Automotive build
described above in the article, save for trimming down to LS3 (ported) heads
from Chevy Performance, Vette C6 LS3 intake, Z06/LS7 injectors,
and a big manual throttle body.
This is an engine that can take an absolutely insane amount of abuse.....


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Chris White

So just buy a corvette.....

odurandina

Cuz, I didn't want this place to be just a junk car swap meet?

Voith

200 or bust.

333pg333

Not that I'm the first candidate for a V8 in a 944 but that motor in the link does sound interesting for something.

jimbo1111

The aerodynamics above 150mph in the 944 turbo are terrible. To much front end lift to make it to 190mph safely without serious modification.

Thom

A good front splitter makes a difference on stability at speeds above 160 mph, in my experience.

DFASTEST951

Not my experience at all. I've done over 190mph on more occasions than I should admit and I could let go of the steering wheel with one hand and each nachos with the other at that speed. It was a solid as a rock. It shocked me. The only difference from stock is an AIR splitter, which after reading your post, makes me think it works more better than I thought. And I have Koni Yellow adjustable shocks all around. In fact, one of my splitters ripped off at 185mph and I rolled over it. I thought the car was going to go airborn. But it stuck right back down on the road. The engineers designed these cars to have more down force the faster they go. It's one of the things I like most about our little cars. How solid they are at speed.

jimbo1111

Im sure it would provide a moderate difference but, I wouldn't risk life and limb on an aftermarket vendor unless its been tested in a wind tunnel and proven. I also had a splitter and wasn't impressed with it. I think it was an Air or something like that. From first install I could tell that the fasteners wouldn't be able to hold over 70 lbs of down force. Judging from what Dfast stated, im probably right. Thankfully his tires didn't blow out in that event.
With over 200 track days and various stages of tune, I can tell you. These cars aren't really designed for those types of speeds. Even if it can be accomplished with brut force, the engineering was never elevated to that level where one would feel comfortable turning the wheel.