'84-'86 EuroS dyno charts
 

So I keep hearing that the 16-valve EuroS '84-'86 with factory specs of 310HP and 295lb.ft are so great, yet for 10 years now I have never seen one on a dyno and have never even seen any dyno charts for a single one of them. Does anyone have one? Please post them.

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

Got a local dyno place lined up to do mine. 3 pulls for $75 with time to tune in btw.

Now I just need to find some spare money. ;) Dan, do you have a 84-86 EuroS?

No, I don't have one. If I did, I would have already dyno'ed it ;)

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

the tuning time you mention is useless without a sharktuner, and only for the twin dizzy models

I don't have a real life dyno chart, but I do have the power and torque plots as per the Driver's Handbook for the '86 Euro S2.

I can scan these tommorrow if they of interest ?

The search function is broken.......Jean-Louis has dyno charts from his 84 EuroS 4.7. With headers IIRC it put down about 270rwhp.

Thanks John, but I have those. I would like to see real-life numbers.

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

Must have missed that one. Yeah, I did do a comprehensive search and didn't come up with anything. Sometimes with the search feature it is very difficult to hone in on the thing being looked for.

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

Assuming he posted the chart, it would have been at least 3-4 years ago. This will be his 2nd or 3rd season with the supercharger.

Hi :)

I have several for my S2 (86 - 16 V)

Both with and without Nitrous, but as whenever I post here , I get ripped to pieces, it seems a little pointless posting them...

But the main pre Nitrous one was 306 bhp and 314 ft/lbs Torque (including 7% added on for auto transmission loss)

If you really want to see them I will post them ?

All the best Brett :)

Well, if your really curious, pony up. ;)

...Or unless you have a ability to adjust cam timing ala Porken's 16V'r. And I have upgrade to allow to Sharktune, just don't have a Sharktuner in my hands... yet. ;)

Isn't there a baseline posted up on Carl's supercharging pages?
All I recall from reference docs are the acceleration curves in the tech spec book. There would be some large assumptions with a mathematical extrapolation. Besides, as I recall some claimed that the '85 Euro S was 330, and not 310 IIRC?

I don't have a chart but I remember a LH Euro that was tested a while back at Devek....260ish HP and slightly less torque (255 or so).... That seems to be common for well running Euros

No chart, but maybe Leonard can help if you really want one...
http://www.landsharkoz.com/articles/qld/ddr.htm

So... seems like 260 - 280rwhp for a well running example. Very nice!

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

260 seems right. About 15% loss for drivetrain. 270 with headers seems on target as well.

My 84 Euro S engine in my 1980 928 put down 261rwhp/262rwt. These numbers were through an S4 cat into a single 3inch exhaust with Borla mufflers. Previously, with the stock 80 cat and exhaust it put down only 240rwhp....very restrictive.

One item to note, is that the early 84 Euro S engines actually had leftover 83 Euro S pistons, so the actual compression was probably lower than advertised.

Rich

Brett, try to ignore the naysayers... I'm sure the Wright brothers had to endure many negative comments too. :) Whether your engine holds up for your speed run or not, and regardless of how long it holds up overall, I'm sure you're going to have loads of fun with it. Please share! Hell, if you don't want to post it publicly I'd love to get the info in a PM. :cheers:

First '84 MY did use 10.0:1 pistons but do they actually make 310 DIN hp since they have LH-Jet, EZT and different cams than 300 hp '80-83 S? Maybe late '84-86 10.4:1 CR engine makes actually more than 310.

Early S2 have the old dual exhaust.The last ones(MY 86?) have big brakes and the true dual exhaust from the 86.5 S3.
My MY 84 is a swisscar.Different LH boxes.i have a spare S3 dual exhaust.The problem is maybe the batterybox but 10-15 hp more is a nice powergain..
Carl has dynosheets for his dualexhaust on his website but i´m a little bit sceptical.

Hi :)

Ok I will post them up tonight when I get home (around 8 hours from now...)

All the best Brett :)

Hi :)

ALL 1986 U.K. S2 had the dual exhaust and big brakes and suspension from an S4...

You are correct about the battery box as well, because of the twin exhaust pipes ,all the way from front to the rear kidney shaped box and because the S2 has the outlet for the twin tips coming out DIAGONALLY at the back corner (S4 came STRAIGHT out)......the battery box has a dented in corner (done at the factory lol.....this means a genuine 86 S2 has to have a smaller battery than an S4....

All the best Brett :)

Hi :)

First WITH only 150 of Nitrous....

[IMG]http://img23.imageshack.us/img23/5788/dyno3om4.jpg By Brett928S2[/IMG]


Without Nitrous....totally standard.....

[IMG]http://img3.imageshack.us/img3/7219/dyno2ot7.jpg[/IMG]

I have others which are a LOT higher, but I prefer for the meantime to keep them private...

All the best Brett :)

928 S2 AUTO V8 4.7 LTR 1986 IRIS METALLIC BLUE WITH X-PIPES ,RMB ,PROMAX CHIPS,
KICKDOWN SWITCH - K&N FILTER - WIZARDS OF NOS - NITROUS KIT 1000 HP
- Email managingdirector@pchealthcare.co.uk

scots stock euro with Ljet (very restrictive), but euro cams and intake, made 250rwhp with headers.

mk

Interesting. My '83 is CIS, the Porsche CoA stipluates that it was built with Austria Equipment Package, and I haven't been able to sort out what that might have been...

Hi Brett, we use the same type of dyno that you do, are you quoting rear wheel hp or flywheel, there is a tendency in the UK to quote the flywheel figure, especially the people at WRC. We had a dyno day and the S4 automatic did 250 rwhp and the S 3 speed auto did 211 rwhp. A rebuilt S2 engine, new 98 mm pistons did 227 rwhp from memory. I think the 4.5 did about 187 rwhp on the day. Drivetrain loss on the Dyno Dynamics machine is more than 15% use a factor 1.32 to get a flywheel figure.

Greg

Hi Greg :)

The NON Nitrous chart was around 290 ish (from memory) RWHP...and they adjusted it up by 7% (?) to give 306 flywheel estimated..


The 150 hp of Nitrous run was a problem on the rollers as it kicked in so strongly it was trying to launch my 928 OUT of the rollers lol....thats why there are so many failed runs on that chart...eventually they used every strap in the place to tie the back end down and got one reasonable run.....but wouldnt run it again :(

My local dyno now rufuses to run mine at all as apparently when their dyno hits 1000 hp it all goes red and shuts down, with possible damage.....and they say they wont take the risk....I dont know how much of that reason is true, but its what they say....

I do know that dyno or not, mine is now running way way way over 500 rwhp :)

The only real problem I have had (apart from traction) is boiling the tranny fluid which I cured by changing it to Synthetic.


All the best Brett :)

Do you have a tranny cooler? Most track sharks have a tranny cooler added since they suffer from the same issue.
Is the LSD installed yet?

Hi :)

I have the LSD but need a puller that will fit the pinion, we tried the crown wheel on its own , but it WHINED very very badly :( ....so need to fit both...

Once thats fitted (LSD) I will think about a tranny cooler, but I am not sure it will cool fast enough for my short runs.

All the best Brett :)

You're kidding right?

Depends on how you install it. This is similar to how mine is setup on the 79:

http://members.rennlist.com/pageauto/transmission.htm

Individual injectors spraying directly on the gears. But I'm sure you already thought of this......;)

Hi :)

Nope, I was serious. most of my runs with Nitrous running are a maximum of 2 miles or around 90 seconds max....you think a tranny cooler will make much difference in 90 seconds ??

All the best Brett :)

Hi :)

Is that a 3 speed or a manual ?

It looks nothing like my 4 speed auto....

Also, if you read the post above this, would you think yours would make a serious difference to cooling the fluid in 90 seconds ?

All the best Brett :)

S4 5-speed

I forgot your car is an auto?

Going from no cooler (or the factory one) to a larger unit with multiple injectors spraying cooled fluid directly on the gears?

Short answer: yes

Hi :)

Yes , 4 speed auto , and as I would need to pull the box for a tranny cooler (as not much room around it with twin pipe exhausts) I doubt it would be worth my while....the LSD change doesn't need box removal....

All the best Brett :)