Big Slice of Reality Pie., 2056 D-jet Dyno run Options

[Olympic 914]

Just got back from having the teener run on a Dyno.

Good and not as good as I expected.

Was hoping for at least 100 Hp, didn't make it.

This run was on a Mustang Dyno, allegedly a Dynojet Dyno reads from 12~15% higher.

First the good.

Runs were extremely consistent. the three runs printed pretty much right on top of each other.

Torque was way up there above 95 tq from 3000 to 4500. with no real dips.

HP numbers were very consistent with a nice smooth line from 2000 to over 4500

Now the bad

Max HP was only read at 88 Hp and max torque was 100.

If I add the 12-15% it comes to 100 Hp. But it is what it is.

Build is

2056 D-jet, Heads by HAM RS+, 8.6 comp. Raby 9590 cam, SS HEs with Triad muffler. I Have adjusted the MPS to what seems to run best for this car.

This car runs great and I just wanted to know what it was putting out, Not really planning to try to tune it for more power. Reliability is the key. and I am so far happy with that.

Dyno sheet added (Date/time is wrong, 5/06/21 8:35am)

[Tom_T]

FYI by comparison for what you should be able to beat with your 2056 ....

The GA 2.0 USA stock 2.0L had better than your 88 max HP & 100 max TQ - with 116 lb/ft @ 3500 RPM & 95 HP @ 4900 RPM (DIN spec numbers) -

https://www.excellence-mag.com/resources/specs/367
.


FYI - Porsche USA stock numbers chart:


.... IIRC this is from the Porsche Chart(s) & made up by p914.com


1973 Owners Manual - with SAE 91 HP @ 4900 RPM, & 105 lb/ft @ 3500 RPM TQ numbers (ergo difference with Excellence's DIN numbers at the link above) -

.


IIRC SoCalAndy's (Andy T) prior yellow `72 914/4 with a twin 2-throat Carb (Weber?) 2056 cc turned out 125 HP, from what he told me - but that was +/- 7 years ago (prior to his current M471 yellow -6).

So maybe the current owner of that car &/or Andy T may know his old 2056's numbers, & whether it was crank or rear wheel.


Unfortunately I'm not finding my Euro Version performance chart for the their GB 2.0L with 100 HP & XXX TQ at RPM Curves - so maybe someone else who has it can post it. (IMG:style_emoticons/default/confused24.gif)


(IMG:style_emoticons/default/beerchug.gif)
Tom
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[SirAndy]

with 116 lb/ft @ 3500 RPM & 95 HP @ 4900 RPM (DIN spec numbers)

You say DIN and then proceed to show graphs with SAE ratings.
(IMG:style_emoticons/default/rolleyes.gif)

PS: 88/95 can get you into plenty of trouble. Plus, i take torque over HP any day.

[Olympic 914]

88/95 can get you into plenty of trouble. Plus, i take torque over HP any day.

It's 100 top torque.

Over 95 from 3000-4500

Feels plenty strong.