1/4 Mile AND Dyno testing the 930
 

Recently finished building my 930 and finished with the dyno tuning and wanted to get some real world track tuning done. This was 135 mph run, however the objective was to leave very easy and just run it up through the gears for data logging and tuning. Three passes were made with no boost changes.

JRod

Joes Silver Porsche 930 Turbo (2) - YouTube

This was running against a very fast late model Corvette with slicks and what sounded like open headers. He shot out on me good, but the horse power of the little Porsche was a humbling experience for him. Later he wouldn't even acknowledge my existence, go figure.:)

Joes Silver Porsche 930 Turbo (3) - YouTube

JRod

Jrod,

Love the second video because you tee'd it up perfectly. Great sounding and fast ride. I am sure you will see several people post wanting photo's since you only have 6 posts... I would recommend getting those in order.

Congrats on a great car and win!!! Any HP figures? What has been done to the beast?

Cheers and welcome,
Bryan

Here is the dyno graph at .7 and 1.4 bar with a spike of 1.6 at peak boost.




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Looks good Joe! How have you been?

Eric Hood

Hi Eric, good to hear from you. How are things with you? Did you ever finish your project?




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Very nice..thanks for posting.. Great dyno figures as well.

joe great ride. where in fla are you located?

Nice work jetjox! Fantastic car and sounds spot on too. What time did you run down the strip? Cheers

Thanks so much! I'm in Sarasota

Thanks, I appreciate the nice coments. The quickest run was 11.02 and the best mph was 137.00 with a speed of 109 in the 1/8

No no no....you've got it all wrong. He was running against a very fast 930! With your dyno results, you should have smoked him. You must, must, post additional picts and specs on your car.

Yes, I'll post my build sheet tomorrow for you guys

JRod

Great results. How have you handled the high boost.

500 hp at 0.7 sounds like it breaths really good.

JROD, specs of the build, please...I am considering variable boost controller so I can turn up the boost at higher speeds. Running 500WHP at .8Bar, but in 3rd -5th could go higher. Nice work and great video!!

NICE!!! :)

The vette guy :( I guess he wonders "How the heck did he catch me???!!!"http://forums.pelicanparts.com/support/smileys/sad2.gif

Hey neighbor, I work in Sarasota and live in LithiaSmileWavy

Nice ride! Is it an EFI conversion and did you do it yourself? I ask cuz I'm working on one too...

Thanks for sharing & see at the track...JK:p

That's awesome!!

Did you just buy the car or were you considering selling it?

Nice! Good to see our porsches beating a vette.

OK, here's the build sheet I put together. I think I have at least 250+ hours of time building it? I just work on my own stuff as a hobby so it's just good therapy.

Here is a list of what I did to my 85 930 during the overhaul. I removed the engine and trans for a full teardown, once apart I found several problems that needed to be addressed. I also had the opportunity to make improvements to enhance reliability and performance.

The list:

Machined the cases for windage (Boat tailed) Performance increase
Cases cleaned inspected, Cam housings cleaned, piston squirters cleaned
Valve relieved the pistons for bigger cams
Changed Crankshaft (std)
Installed new Carrillo connecting rods and bolts
New Main bearing, Rod bearings, Intermediate shaft bearings
New cyl base gaskets used
Deck height checked and compression calculated 6.8:1
New Racing cam chains( better strength)
New chain rails
New GT2 EVO Cams from DRC Cams in Ca. Big perf increase over the old 964's that were in it.
New oil return tubes
New gaskets, seals, and o-rings throughout
New chain sprockets
935 Rocker shaft seals
Cylinder heads flow tested and CC’ed
Cyl heads machined for twin plugs per cyl
Cyl heads and cylinders Nirosist ringed for sealing under high boost (935 style)
Valve job done 3 angle
935 sparkplug hold downs
New racing valve springs installed (135lbs seat pressure)
New Raceware head studs and fasteners installed
Balanced Crank, Rods, Clutch and Flywheel
New ARP Flywheel bolts installed (Stronger Than stock)
New Alternator installed
New Oil pressure sensor installed
New Magnetic Crank sensor installed (Electromotive)
New lightweight High Torque starter installed (Saved 7 lbs)
New starter ring gear installed
New custom Fuel rail made
New fuel filter element installed Aeromotive filter
New 1000cc injectors installed (old were 600cc)
New Mocal fuel lines and fittings throughout
New Fuel Lab 1500hp fuel pump (Much Quieter than the Weldon Pump that was on there)
New fan pulley and belt
New AC belt
New spark plugs of course (NGK 5671A-8)
Replaced some Spark plug wires and ends(All were ohmed)
Replaced fender mount oil cooler with a New Front mount Mocal oil cooler and Mocal fittings and lines.
Flushed all other oil lines
Tilton Oil scavenge pump for turbo oil evacuation
New custom built Wire harness with cannon plugs for quicker engine removal
New Electromotive Tech 3R System installed with wintech 4 software (The latest from them)
New Electromotive Coil packs with the tech unit
New Precision Ballbearing PT6765 Billet wheel turbo/ with anti-surge race cover/ .81 hot housing Thermal coated
Powder coated valve covers, cam boxes, fan and housing, strap.
New Braille 17 lb battery (Stock batt 31 lbs)
New Braille batt hold down used (Very nice)
New engine sound pad installed
New front brake rotors installed
New Racing brake pads installed all four corners
Flushed Brake system and added Super Blue Brake fluid
New wheel bearing installed all four corners
New Kuhmo tires (Excellent dry road traction)
Transmission serviced
New shifter bushing installed
3k in paint work done
New hood shocks installed
New side mirror glass on drivers side
Motor run in, oil and filter changed a second time. Inspected for defects and none found.
Removed engine after break in, to retorque heads and readjust valves and change oil
Dyno tuned to 1.5 bar
Weighed and corner balanced
2595 lbs empty (Very fast at1 bar boost setting)
Rockers inspected

Mods already done before:

Mahle 98MM Pistons and cylinders (fully finned)
3.2 Carrea intake manifold
70mm Throttle body?
Custom headers 304ss
Heads ported by Essa
Custom Intercooler by Essa (very nice) Griffin core
Custom air intake with New K&N filter (Essa)
Fuel cell 12 gal
New Fuel lab 1500hp fuel pump
G50 5spd trans conversion (Recent rebuild)
Sachs racing clutch like new
Custom Flywheel
C2 Body work, mirrors,etc...
17" Fikse FM10 Wheels very high quality and very light
993 Rear brake light mod
New Sparco fighter race seats with 5 point harness
Roll bar color matched silver
935 center consul
Autometer Tach with shift light
Greddy boost controller
Greddy turbo timer
RS light weight interior, door panels
Autometer EGT gauge
Autometer Fuel pressure gauge
Custom Aluminum ECU mounting bracket
3.8 RSR Rear wing
Weltmeister sways bars front and rear
Rear coilover shock conversion
All plumbing Aeroquiped throughout
Custom 304ss Exhaust with Borla XR1 core, V-banded for quick removal (Essa)
Custom Waste Gate dump piping to match exhaust side (Essa)
935 Boost gauge
Porsche updated 993 door handles
Porsche up-dated 993 mirrors
New power window switch’s installed
Large under mount AC condenser modification done for more effective cooling
MOMO steering wheel
Carbon fiber appointments done on interior
Custom faced gauges
Billet Pedals
New fuse block
New through bolt o-rings
Transmission was rebuilt prior to my owning it by Gokey Performance
Trans has LSD
Carbon fiber shift knob
Weldon fuel pressure regulator (high dollar)
Stock 930 Valves were replaced and very low miles on them (Previous owner)

I bought the car to build and the enjoyment of the journey. Then sell it and hopefully make 5 bucks an hour for my time? :rolleyes: For me it's just about the journey.

Yes Capt. I've follow your build on 6speed, VERY NICE WORK!

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Nice. Real nice.

I like how more and more people are coming out of the woodwork drag racing their cars.

I get so tired of hearing how the 911/930 is not built for drag racing.

Awesome ride! Love it.

As I was reading your list, your crank is std. 3.3 and your using 98mm Pistons and Cylinders..

You are producing fantastic numbers-hp on a 3.3ltr engine. Am I correct?

If you used a 3.6 turbo crank with 98mm Pistons and Cylinders you would have 3.45ltr displacement...I believe

Congrats!!!


Walt

Nice! its a very fast 930, no doubt. best ive done to date is 11.3 at 127mph. cis and stock weight. Ive seen 130.1mph but only on a G-tec measuring device. jetjox....... top work mate.

It's a 3.4L with that combo, I like the 98's because they're thicker than the 100's and have the abilty to take more boost if one desired. I would have to guess that a major factor in making good numbers would be attributed to turbo technology? I'd love to test some of the latest Borg units that could out flow what I have.

JRod

That's the fastest cis 930 I've heard of? Sounds like you seriously have that thing dialed in? Making at least 480-500rwhp for that. What mods did you do for fuel control etc.. What turbo and combo on that build? Excellent!

JRod

Hi jetjox. I ran that time back in 2010. A few more mods since then but theres a post with pics and time slips on here under.. quarter mile results... I only did 2passes on the day but the chev boys were pretty shaken up let me say! Torched a blown 6litre holden monaro easy!!!

That is one seriously impressive build. The poor Vette guy had to be one depressed dude. Love it.

Awesome car. I just started on my engine rebuild and I'm getting excited.

Isn't you 6.8:1 compression ratio lower than stock? How does it drive off boost?

I thought with twin plugs and EFI it was safe to raise the compression ratio over the stock number.

I used to like higher static compression for the off boost power but in reality I never noticed much difference, however the payoff is being able to run higher boost levels which far offset the minor power loss of low compression. This combo has very little lag and such strong midrange that I will never build one of these over 7 to 1 again. I had to valve relief the heads which pulled some of the compression back. It's very nice having the safety protection of lower compression.

JRod

Thanks for the info. Are your heads using stock sized valves or have they been opened up?

Valves are stock size, but the heads are ported and I flowed them on a Super Flow bench. They didn't flow hugh numbers but enough to get the job done. The numbers are similar to a 3.2 head but a little better. Ports aren't too big and with the stock valve sizing for good low end torque

Bravo!...reads very similar to my build except I have higher stat compression 8:1 and running only .8Bar now...would like to put in variable boost controller to kick in from 3rd - 5th. http://forums.pelicanparts.com/uploa...1326501055.jpg
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Very nice! I have a Greddy controller and it works well, but there's another type that was developed for turbo motorcycles that is much more simplistic and has staged adjustibilty. It's less money, works better and much less $$

jetjox, nice to see another 930 kicking ass on the drag strip. Your power numbers are right where I want to be. did you mention how much boost your were running on the 137mph pass?

I am also glad to hear the EVO cams are working great, I have a set on the shelf for my build.

Damn we really have to do a get together for us florida boys. lots of cool 930's coming out of the woodwork

Jetjox, what is the name of the controller you recommend?

sounds like he is speaking of the AMS500 or 1000. Sebastian from NLR ( the maker of those products) has gone over 200mph on his turbocharged bike with NO WHEELIE bar