hey, im curious.

what "mods" improve the Torque more than the power?

cos i want a magna with a cliff face of torque, but not nessarly power :S

mmmm.. perhaps i shuld make a magna with the best of both worlds?

whats your say?

port and polish, cam work (stage 1 I think is the better one for low end, or you could get a custom grind)

Boring, and stroking will increase low end by increasing displacement. That's about all I can think of.

Sam6G72 would be good to help you on this one

super charger

The biggest increases come from increased displacement and forced induction. Smaller increases come from cams, chip, better intake and exhaust flow but they all add up. Also, if you're increasing your torque, you'll be increasing your power.

NA POWER GBM... heh heh heh...

Erm... mmmm.... It's all in the proper tuning of the ECU and A/F me thinks coz all the rally cars... have basically slightly more than standard Kws but 500Nm to go.... and they always advertise on the ECU...

Installing an intercooled turbo-diesel straight six will increase your torque a lot, typically they have 2000Nm of torque. :lol:

Seriously, increasing the stroke of your motor will increase the torque. Short stroke, big bore motors (aka over square) are revvers while long stroke, small bore motors (aka under square) are torquers.

Long runner intake manifold will give good torque but not very good top end power.

yep, a bit more directly than has been said, torque is closely proportional to stroke... so if you increase that, you'll be sweet... but that would be the expensive way!

turbo would be the best way to increase low down torque...

as with the rally cars (WRC) they are limited to 300hp ATF.. but have over 500Nm of torque... this is availiable down low and is due to turbo control... if they had 500Nm higher in the rev range it would increase the power over 300hp

The only way to increase torque is to increase the Brake Mean Effective Pressure (BMEP) this is done by increaseing the Volumetric efficency (VE) of the engine. This is done with either forced induction or modifying the cams on a NA engine. It is also possible to increase the BMEP using ignition timing ie run the engine on race fuel and screw in more advance and you will make more torque. The other thing to remember is that Power is a product of engine speed and the torque at that RPM. so the easiest way to make more power is to make torque higher in the rev range. This is at odds with what is generally concidered a good streetable car. Thus we want the best spread of torque possible. Cam tend to work best in a certain RPM band this is why as a gereral rule Forced induction gives you a much bigger increase throughout the rev range.

Cheers
Paul

D&T in adelaide has an exhaust system for the magna that increases low down torque and power by 6-8kw by changing the stock headers down to the cat.

i spose thats only for the 96 onwards? i spose i can't do that on my KR :(

D&T in adelaide has an exhaust system for the magna that increases low down torque and power by 6-8kw by changing the stock headers down to the cat.

any idea on the cost?

cos i might have to check this out when next in adelaide.
:D

Ben.

$1100 was the quote...including labour i think

Widow had a bad experience with D&T I think..
I ranged them up before about a full twin outlet system and the cost was around 2000.. a Y pipe branch from cat back was around 750 without muffler..

But after Widow's experience and the fact that the OEM pipes are good enough.. I spent the money on RPW Extractors, a MagnaFlow Cat and a MagnaFlow Muffler...

$1100 was the quote...including labour i think

ha! nope. sorry, ive become a tight ass since the haltech exercise :lol:

1100 for a 5-8kw isnt justified. buying 700bucks worth of rpw race extractors will prolly do better :lol:

thats true..

Booya,
DO you have the ability to run duel maps on the Haltech? If so I would be seriously looking at running some elf 103 race fuel for the tuning in the second set of maps. It is still safe to run in all your fuel lines etc and desn't needs to be flushed out and you should get a good increase in power. the only problem in that it is $5/l but for race days and such probably not a bad idea. The only real cost would be the second tune. I would think that you should be able to get that extra 20hp at the wheels that you were looking for anyway.

Cheers
Paul

P.S This works by allowing you more advance on you ignition increaseing BMEP

yep,

my tuner has programmed 13, yes, you heard right, thirteen maps :shock:

to run with a whole range of fuel :badgrin:

now the fun begins. :badgrin:

oh, ive got her back, and drivin, and OMFG. its ****ing fllys!

Excellent!!

Manual

NA POWER GBM... heh heh heh...

Erm... mmmm.... It's all in the proper tuning of the ECU and A/F me thinks coz all the rally cars... have basically slightly more than standard Kws but 500Nm to go.... and they always advertise on the ECU...

If you run a turbo and an inlet restrictor you can do that too. But if you remove the inlet restrictor you'll have 500 Nm in the midrange and 400+ HP in the top end. The inlet restrictor only lets them flow around 300 HP worth of air and if you look at power = torque x revs you'll see why they have shitloads of torque at lower revs.