960 replies to this topic

[Exmantaa]

Specs of Bill's engine?

[CHILL Gone DUTCH]

same as mine 

may be on a smaller pulley 

 

and exhaust

Edited by CHILL Gone DUTCH, 20 October 2015 - 10:14 PM.

[Matthew Bentley Racing Ltd]

Different exhaust

[Matthew Bentley Racing Ltd]

Bargi's:

 

[CHILL Gone DUTCH]

Bills is night and day ahead of mine 

 

torque is through the roof

Edited by CHILL Gone DUTCH, 20 October 2015 - 10:13 PM.

[Matthew Bentley Racing Ltd]

And bargi vs lee's

 

[CHILL Gone DUTCH]

is that lees CS map 

[Exmantaa]

same as mine 

may be on a smaller pulley 

 

and exhaust

 

So same 2.2 engine, same Harrop 1320;

3.1" pulley vs. smaller (2.9"?)

Probably some diferences in porting work/head/cam flow

Bill maybe on a bigger 3" exhaust system

 

Max Torque 290Lb.ft vs 400Lb.ft ?? (That's ~540Nm! I saw Z20LET engines needing ~2 bar turbo boost to get to those torque levels... )

 

Bill maybe on a 100 shot of Nitrous? Or running on E85 or a very efficient water/meth injection that allows him to run way more advance than our engines??

[CHILL Gone DUTCH]

 

same as mine 

may be on a smaller pulley 

 

and exhaust

 

So same 2.2 engine, same Harrop 1320;

3.1" pulley vs. smaller (2.9"?)

Probably some diferences in porting work/head/cam flow

Bill maybe on a bigger 3" exhaust system

 

Max Torque 290Lb.ft vs 400Lb.ft ?? (That's ~540Nm! I saw Z20LET engines needing ~2 bar turbo boost to get to those torque levels... )

 

Bill maybe on a 100 shot of Nitrous? Or running on E85 or a very efficient water/meth injection that allows him to run way more advance than our engines??

 

 

the engines are virtually twins 

 

to my knowledge no water meth or nitrous 

he running slightly more ignition than me but not a lot more but does run leaner

[Exmantaa]

 

 

same as mine 

may be on a smaller pulley 

 

and exhaust

 

So same 2.2 engine, same Harrop 1320;

3.1" pulley vs. smaller (2.9"?)

Probably some diferences in porting work/head/cam flow

Bill maybe on a bigger 3" exhaust system

 

Max Torque 290Lb.ft vs 400Lb.ft ?? (That's ~540Nm! I saw Z20LET engines needing ~2 bar turbo boost to get to those torque levels... )

 

Bill maybe on a 100 shot of Nitrous? Or running on E85 or a very efficient water/meth injection that allows him to run way more advance than our engines??

 

 

the engines are virtually twins 

 

to my knowledge no water meth or nitrous 

he running slightly more ignition than me but not a lot more but does run leaner

 

 

So should have around the same power then. There will be some diferences due to more ignition advance, but if the exhaust system is not causing too much restriction for the power level, the main power adder is simply the Supercharger flow. (assuming your tune is not seriously flawed...)

 

So for 400 ft.lb, he will basically need to run a 2.25" pulley and the same engine efficiency as yours...

(Smallest Harrop pulley I have is a 2.7". Want to borrow? )

 

[CHILL Gone DUTCH]

No thanks I'm happy with mine It removes the target of the rear of my car and puts it on a other I would love it if bill would do a power run with obdtuner

[oakmere]

I think it is more likely that dyno is over reading torque as both plots from it have very optimistic torque figures.

[haggi961]

Not being nasty but I don't believe that bill is running this and the dyno being used has got to be miles out. Chills engine is the same along with 3 inch exhaust and this make chills look like he has a m62 bolted to achive the power. The torque is just crazy for that spec engine.

[Graeme Lambert]

 

Not being nasty but I don't believe that bill is running this and the dyno being used has got to be miles out. Chills engine is the same along with 3 inch exhaust and this make chills look like he has a m62 bolted to achive the power. The torque is just crazy for that spec engine.

 

 

To be fair Luke, you're not the only one to be surprised by the torque levels on this dyno... If I didn't know better (and hadn't specifically asked the question) I'd have said there was some confusion between lb ft and Nm. 

 

That said, the dyno is used for lots of other cars so susprised the Ford boys (who use it a lot) haven't raised concerns?

[Graeme Lambert]

In fact, Sam told me that if anything their dyno under-reads slightly...

 

Just found this on the interweb somewhere "[color=rgb(90,90,90);font-family:tahoma, helvetica, arial, sans-serif;font-size:12px;background-color:rgb(236,236,236);] it was as fast as other tuners bigger claimed hp kits so don't be fooled the jamsport dyno only giving you 350 other dynos would read quite alot more bhp for your kit! enjoy"[/color]

 

Regardless, the best way for us to sort all this out (bear in mind, not everyone fully believes the Dutch software figures either) is to have a proper rolling road shoot out with all the different cars in the same place on the same day.

 

Not that the willy-waving matters. It's what you do with that power, not how much you've got, that counts...

 

[Graeme Lambert]

Double post for some reason...

Edited by Graeme Lambert, 21 October 2015 - 07:28 AM.

[Exmantaa]

I know those dutch MAHA rollers are pretty spot-on for their claimed power figures and that day there were also some stock engined cars (some newer OPC zafira's, a C20XE and a few 3.0 24v's) on the rolers that were measured very close to the factory claimed power.

 

So when doing a VX220 RR day, make sure you also roll a stock  car to "calibrate" the dyno figures...

[vocky]

Northampton Motorsport has an accurate rolling road, we had two 'known' bhp cars on the RR day, one had 180bhp and recorded 182 and the other 240bhp and recorded 241bhp.

 

My old 2.2 NA engine made 218.8 bhp there

[Peter VXR29]

Yes let's do a rolling road day so we can compare like for like.

[The Batman]

Won't me to bring mine so we can all shout vtec just kicked in all together?!??