388 replies to this topic

[Exmantaa]

Just thought I would share how much further a head this 2.4 is compared to mine 2.2

Cobra = 2.4 stage 3 cams 2.7 pulley
Chill = 2.2 stage 2 zzp cams 3.1 pulley



Ignition levels are currently quite even ( minor differences ) but wonder how much of this is down to water meth

 

Wondering again; why is Chills power dropping of a cliff after 7.2K, while the other keeps climbing till 7.8?  The Harrop SC and the standard intake manifold clearly are not causing an obstruction, and with comparable ignition numbers and no detected knock... ??? 
 

[1cobrav8]

Is it possibly a software issue that was fixed in a later version? Remember i only got my ecu converted April time this year I believe.....

[CHILL Gone DUTCH]

cobra has a dip at 7000-7200 also just to confuse things 

[siztenboots]

positive crank ventilation same for both?

[Exmantaa]

I had some play yesterday with Dominique's 2.0 M62. (Wideband learning was not working as it should...)

But his measured powercurve was climbing  or steady till the 7.4-7.5K limiter. No dip around 7K... 

Edited by Exmantaa, 09 August 2016 - 03:07 PM.

[smiley]

cobra has a dip at 7000-7200 also just to confuse things 

 

So, we all need more power to push through the dip...

 

Silly pullies for everyone   (and wi to get the heat back under control........  )  

Edited by smiley, 09 August 2016 - 03:10 PM.

[smiley]

I had some play yesterday with Dominique's 2.0 M62. (Wideband learning was not working as it should...)

But his measured powercurve was climbing  or steady till the 7.4-7.5K limiter. No dip around 7K... 

 

In 3rd gear right?. Which 1cobrav8 is also doing. (and Chill)

[CHILL Gone DUTCH]

 

I had some play yesterday with Dominique's 2.0 M62. (Wideband learning was not working as it should...)

But his measured powercurve was climbing  or steady till the 7.4-7.5K limiter. No dip around 7K... 

 

In 3rd gear right?. Which 1cobrav8 is also doing. (and Chill)

 

 

That particular run may of been done in second of mine i dont have a note of what it was

cobra is using 3rd no surprise there  

[CHILL Gone DUTCH]

water injection will be coming very soon after zandvoort trip for me 

probably with a bigger pulley to 

Edited by CHILL Gone DUTCH, 09 August 2016 - 03:25 PM.

[1cobrav8]

Just ordered a 2.6 pulley.....lets see if we can either 1).....break the engine or 2).....Break 500BHP!!!! Place your bets 

[CHILL Gone DUTCH]

positive crank ventilation same for both?

 

no cobra to atmoshere 

me in to inlet 

[tibby]

Just ordered a 2.6 pulley.....lets see if we can either 1).....break the engine or 2).....Break 500BHP!!!! Place your bets 

Lunatic! (3th time i type this!) This is over the top in Supercharged form! :-) Curious for the tranny if it can hold . To much agressive i think...

[ArticMonkey]

Just ordered a 2.6 pulley.....lets see if we can either 1).....break the engine or 2).....Break 500BHP!!!! Place your bets 

470bhp not enough for you?

[Exmantaa]

 

I had some play yesterday with Dominique's 2.0 M62. (Wideband learning was not working as it should...)

But his measured powercurve was climbing  or steady till the 7.4-7.5K limiter. No dip around 7K... 

 

In 3rd gear right?. Which 1cobrav8 is also doing. (and Chill)

 

 

No; 2nd gear runs slamming into the limiter.

[smiley]

iirc the 2.6 on M62 required trimming the snout.

Not sure if the same for the harrop.

 

[Exmantaa]

Just ordered a 2.6 pulley.....lets see if we can either 1).....break the engine or 2).....Break 500BHP!!!! Place your bets 

 

I must have a 2.5 Harrop pulley somewhere..

[vocky]

 

Anyone got a Saab engine sitting around I can have might ask Vocky to see if he could build me one 🙂 Stage 3 cams pretty wild

Get your self a Gen 3 block nick Vocky has one

 

 

I do have a GEN 3 A20NFT engine available, only done 20k  

[Exmantaa]

 

 

Anyone got a Saab engine sitting around I can have might ask Vocky to see if he could build me one 🙂 Stage 3 cams pretty wild

Get your self a Gen 3 block nick Vocky has one

 

 

I do have a GEN 3 A20NFT engine available, only done 20k  

 

So that will be a reinforced 86mm bore block then with the cast in liners. For sure you're not going to destroy that with some Darton sleeves?

(I have a Gen 3 LE5 bottom block; 88mm bore; <8K. )

 

[BadCop]

Putting sleeves in an A20NFT makes no sense at all. Less stabilty, thermal conductivity is lower and the surface is softer than the plasmacoated Silicium. The problem with every highpower sc is the parasitic drag. A 500 bhp Turbo engine has about 40 bhp parasitic loss. A 500 bhp sc engine has over 150 bhp parasitic loss. Which results in over 650 bhp mechanical load to take for bearings, rods, crankshaft etc. Also the thermal load is much higher. The question is - as always - how long will it work or how long does it need to work. 1 Powerrun for a big dyno figure? Probably. 402 meters for a 8 or 9 sec pass? Perhaps yes. One fast lap on a racetrack? Could already be the end of it... Half an hour WOT on the track? No. A trackday weekend? Never ever.

[NickB787]

 

Anyone got a Saab engine sitting around I can have might ask Vocky to see if he could build me one 🙂 Stage 3 cams pretty wild

Get your self a Gen 3 block nick Vocky has one  

  I do have a GEN 3 A20NFT engine available, only done 20k  

:-) I wonder

Edited by NickB787, 10 August 2016 - 06:00 AM.