heinrich

Cherub I am not getting my hopes up but if I go home today and discover hidden horses I am sending you a thank-you gift.

jyoon

i have an 84 euro S 5 speed. looking at the stats in the manual, it appears to be a bit lighter and faster iirc. i do notice there isn't a whole bunch down low, but does seem to rev out well. i don't have any other 928s to compare too though. i understand what mark is getting at with the gear ratio thing so i'm not wanting to start any arguments there. one thing i did notice was it seems geared very low. iirc 3rd gear is redlined before 100.

FlyingDog

He said BHP not RWHP. I guess it depends on what correction factor he used and whose dyno as to how he even got the 316 number.

Heinrich, are they different trannies? (3speed vs 4speed)

heinrich

Matt, both 4-speed auto. Different rear ends. Correction factor was 8:2

Stan.Shaw@Excell.Net

Heinrich,

My '80 Euro S with only a Borla exhaust produced 266 rwhp at the rear wheels (on a dynojet). Depending on the correction factor, that certainly would seem to put it over 300 chp, right?

heinrich

Stan, yes that is AWESOME!!!!!!!!!!!!!!!!!!!

Herr-Kuhn

Hey, we can fix this real fast....take that Euro, drop the CR and hang two K-26s on it...oh yeah...blowing down 500+ crank ponies my friend! I have no doubt it can make that much.

I'm getting new manifolds made for the Callaway...let me know if you want a set made. K-26 with 12 psig would be an alright setup.

Tom. M

Actually...H's 85 recently produce very solid rwhp numbers for a basically stock car...and dividing those numbers by 0.8..give 316hp at the crank. Another 85/86 engine with 5sp did 280 at the wheels..pretty amazing for those engines..

and H's euro in a past life actually did produce some dyno numbers...around 220 RWHP if I remember correctly..but as H has determined...this Euro has some issues...which he is addressing...maybe that low octane connector is connected.??? I didn't know that they came on the 84-86 Euro motors...but being LH and sans knock sensors..it would make sense...

I can also see the torque curves having some factor in the feel...pretty much flat line on the 85/86 32 valvers..and peaky in the euro...I think peak around 4 k>???...so different delivery of power..

later,
Tom
midlman@rennlist.net
89GT

heinrich

but .... John ..... the CR is all the Euro is about ...

heinrich

Tom, we need to get your moniker changed to busybody Just kidding Bubba

Herr-Kuhn

Hey, $1250 for a set of JEs, $1000 for Nikasil, set it at 8:1 and boost that bad boy. 300*1.7=510 HP...EASY with 12 psig and some charge cooling and it would be reliable too!

Just wait til next year...I'll be showing up with something interesting...let's just hope it isn't Goldmember!

Mark

My '85 EURO (X-pipe and no cats - only drivetrain 'mods') A/T has had NO problems keeping up with ANY but the blown cars at the last 2 SITM's! I have been able to stay right on the butt of several GT/GTS's and S4's coming off the stoplight turning to go to Grandfather Mountain....

mark kibort

The way we and others discuss HP, YES, 266 Hp at the wheels is 312hp. and all out of just an exhaust change??

keep in mind that JPs euro was around 275 at the wheels, and i dont recall if it was CIS or the later LH type of 4.7.

my other comment regarding the "tested" hp was assuming that test was on a dynojet. if he "tested" 316 hp, was it on an engine dyno?????? sounds kind of fishy for an 85 to get 316 rear wheelhp. if that is in fact, a flywheel hp number , then yes, 268 at the wheels is a good number.

I think we all know by now that a divide by .85 correction is ball park enough for our comparisons. (.8 for automatics) (ie 15 and 20% loss calculation)

MK

mark kibort

in building up scots euro 4.7, i see no way that it is under 11:1 Ive heard about 1.5 hp gains for every point gained in compression ratio. this means, the euro is about 2 points above the stock US 4.7, or 3% just in compression ratio, let alone the bigger valves, TB, runners, etc

MK

heinrich

Mark, keeping up is subjective till one has hard dyno numbers, and you are quite right I have fallen into that pit myself haven't I ... .... but I assure you, my S4 with 349hp/tq at the crank; 299rw, will not be kept-up with by either my S2 or my US '85 ... not by a loooong shot.