car fantasic with extractors

05-10-2005, 09:31 PM

i got my car back on tuesday after extractors and 2.5" exhaust. The car flies and its like a new car. Just wonderning whats the rough estimate of KW at the flywheel and rear wheels are at now? Pickup on the car is awesome.
Could it beat on a standing start a XY 302 winsdor?

cArSiK · 05-10-2005, 09:34 PM

Quote:

Originally Posted by AU3FAIRMONT

i got my car back on tuesday after extractors and 2.5" exhaust. The car flies and its like a new car. Just wonderning whats the rough estimate of KW at the flywheel and rear wheels are at now? Pickup on the car is awesome.
Could it beat on a standing start a XY 302 winsdor?

Good to hear mate. What extractors / exhaust brand did you go for?

James

05-10-2005, 09:41 PM

lukey motivater extractors and 2.5" redback exhaust. was kinda on a tight budget but car is awesome now.

JC · 05-10-2005, 09:51 PM

If it's the non-VCT, then you probably have between 110 and 115 rwkw (compared to 100-105 standard). If it's VCT, maybe around 119rwkw (noting that the VCT autos tend to put out around 120rwkw standard)

cArSiK · 06-10-2005, 09:03 AM

Quote:

Originally Posted by JCXR8

If it's the non-VCT, then you probably have between 110 and 115 rwkw (compared to 100-105 standard). If it's VCT, maybe around 119rwkw (noting that the VCT autos tend to put out around 120rwkw standard)

I dont get it , why would he loose 1Rwkw putting an exhaust on a VCT?

JC · 06-10-2005, 11:03 AM

Quote:

Originally Posted by cArSiK

I dont get it , why would he loose 1Rwkw putting an exhaust on a VCT?

Good question. From my own experience (fitting pacemakers to a VCT), and others on the forum, fitting anything other than the comp series JMM extractors onto a VCT actually results in a loss of peak power. Torque still increases by about 10%, but peak power does drop. The car still goes better, but if you are after a peak power increase, you will be disappointed.

buickman · 06-10-2005, 03:55 PM

I pulled 122.4 & 123 rwkw on a AU1 VCT ghia at the AU dyno day early this year stock except fitted with pacemaker PH4499 redback 2.5 and stock rear muffler. Plus the A/Filter was a little dirty & plugs or leads looked as with they were breaking down at high revs.

Fitted a pod in box with custom intake pipe new plugs & a hot dog muffler on the rear now & the car fells more responsive. So should pull a few more rwkw's
buickman

AU:PROJECT:UTE · 06-10-2005, 04:22 PM

I've recently had fitted a set of Wildcat extractors with long secondaries to my AUIII XL I6 manual cab chassis ute, resulting in the cat being moved back to the rear of the cab instead of right behind the engine, this flows then through a semi baffled 2.5" custom mild steel system. This has resulted in significant midrange accelleration between 2-3500rpm. Fuel economy has improved from 11.9l/100km to 10.15l/100km. I am yet to dyno my girl at this stage; need to find someone in Gunnedah that can do it first which I doubt very much.

AU-MUSTD · 06-10-2005, 05:33 PM

Since putting pacies and 2 1/2 system to my fairlane vct l get a lot more top end power over stock. Havent dyno'd either but definatly wouldnt have lost any peak power. Fuel economy has stayed around the same though at around 10 lt/ 100 kays

cArSiK · 06-10-2005, 10:00 PM

Quote:

Originally Posted by JCXR8

Good question. From my own experience (fitting pacemakers to a VCT), and others on the forum, fitting anything other than the comp series JMM extractors onto a VCT actually results in a loss of peak power. Torque still increases by about 10%, but peak power does drop. The car still goes better, but if you are after a peak power increase, you will be disappointed.

wow , interesting stuff. Those pacemakers that you fitted , where they the competition series?

James

JC · 06-10-2005, 10:52 PM

James - no I fitted the 4499s. I believe the 4480s are better for the VCT, but the only headers that are KNOWN to provide an increase are the JMM race series. PM Casper for further info, as he has done lots of reasearch into headers for the VCT.

For non-VCT engines, any headers are better than stock manifolds. I have 4499s on the wagon, and the pickup compared to standard (especially from 2000rpm) is noticeable. It revs very freely and quickly to the red line.

cArSiK · 07-10-2005, 08:35 AM

Quote:

Originally Posted by JCXR8

James - no I fitted the 4499s. I believe the 4480s are better for the VCT, but the only headers that are KNOWN to provide an increase are the JMM race series. PM Casper for further info, as he has done lots of reasearch into headers for the VCT.

For non-VCT engines, any headers are better than stock manifolds. I have 4499s on the wagon, and the pickup compared to standard (especially from 2000rpm) is noticeable. It revs very freely and quickly to the red line.

Thanks for that JC , I had planned to put JMM Race Series on my VCT but they are no longer selling them (not sure if its temporary) so my second choice was PH4480's - but i dont think they are quite as good as the JMM race series....

JC · 07-10-2005, 10:35 AM

James - before and after dynos on the same day are the only way to be sure. Make sure they do at least 2 runs each time though - preferably 3, as the dyno reading generally increases after the first run (don't know why, they just do) and decreases after the third (heat etc). So if they only do one, and fit extractors and then do a second run, and you get a small increase, you won't know if that's because of the extractors, or just because it's the second run.

boodek · 07-10-2005, 06:55 PM

I'm not interested in more power or the car being any louder than standard, but would like to improve the fuel economy on my AU3 Futura. Is there any point fitting extractors?

cArSiK · 07-10-2005, 07:05 PM

Quote:

Originally Posted by JCXR8

James - before and after dynos on the same day are the only way to be sure. Make sure they do at least 2 runs each time though - preferably 3, as the dyno reading generally increases after the first run (don't know why, they just do) and decreases after the third (heat etc). So if they only do one, and fit extractors and then do a second run, and you get a small increase, you won't know if that's because of the extractors, or just because it's the second run.

cool , ill keep that in mind....To be honest , its not the Kw's im after , its the time improvement. So if it means one has more torque but less power than the other and gets me accross the 1/4 quicker , then thats fine by me...

James

JC · 07-10-2005, 07:11 PM

Quote:

Originally Posted by boodek

I'm not interested in more power or the car being any louder than standard, but would like to improve the fuel economy on my AU3 Futura. Is there any point fitting extractors?

boodek - in theory, extractors do you give better economy as the engine does not have to work as hard to provide more power. Another way to put it is that it makes power lower inthe rev range - depending on which extractors you get, of course. Tri-Ys, like pacemaker 4499s, give low down torque increase, 4into1s, like pacemaker 4480s, provide better breathing at the top end of the rev range. So the theory is that you don't have to push the pedal in as far (therefore you use less petrol) to get moving, etc. In practice, once you have the extra power you use it, and then you want more! Just ask Casper, or Hamo, or useless, or jonbays, etc, etc.

loxxr6 · 07-10-2005, 07:12 PM

Quote:

I'm not interested in more power or the car being any louder than standard, but would like to improve the fuel economy on my AU3 Futura. Is there any point fitting extractors?

If you do the exhaust and don't drive so that you enjoy the extra power eg thrash it, you should see an improvement.

Baboon_AU · 07-10-2005, 11:18 PM

i got dedicated LPG AUII ute I6.. what sort of system should i be looking at for more power and economy..i dun really know what to look for, like which brands are better than other? help would be good guys!

JC · 08-10-2005, 08:05 PM

Baboon - Pacemakers, Jim Mock and Hurricane Headers (from Liverpool exhaust) all have good reputations. Lukey & HM Headers will still work, but don't seem to be as popular or have the same results as the others. You can get pacemaker 4499s off ebay for about $350 or so - I wouldn't recommend the pacemaker 4480s (or any other Tri-Y headers) for you, as with the gas mixer, you have an intake restriction, so you want as much low down torque as possible. No point having big bore exhaust pipes to get rid of gasses that you just can't get in because of the intake restriction (i hope that makes sense!).

Casper · 08-10-2005, 08:18 PM

Fuel economy? What is this fuel economy that people speak of? Never experianced that. I assume that an tacho that lives in the red zone is probably the reason though. :P

Racecraft · 09-10-2005, 05:09 AM

Quote:

Originally Posted by Baboon_AU

i got dedicated LPG AUII ute I6.. what sort of system should i be looking at for more power and economy..i dun really know what to look for, like which brands are better than other? help would be good guys!

Being factory LPG really hinders getting headers on your car mate due to the location of the convertor..sorry to be the bearer of bad news..
Send a pm to AUII_SE_Ute, he is one of the few that run headers on an LPG AU

Baboon_AU · 09-10-2005, 09:14 PM

cheers for your help guys.. i still should be able to put some on right?

loxxr6 · 10-10-2005, 02:52 PM

Quote:

Hurricane Headers (from Liverpool exhaust) all have good reputations.

The Hurricanes are better for the v8 guys. I have them on my six and I've been told the primaries are too big. A choice of the JMM headers or Pacemaker comps would be a better way to go. The Hurricanes are better for up top end apparently.

parker · 12-10-2005, 08:08 PM

I'm interested in the experience with dedicated LPG + extractors too. U getting anywhere Baboon?

Sleeperau · 18-10-2005, 12:57 AM

Quote:

Originally Posted by Casper

Fuel economy? What is this fuel economy that people speak of? Never experianced that. I assume that an tacho that lives in the red zone is probably the reason though. :P

So true!!!!!!!!! :evilsasmo

Baboon_AU · 18-10-2005, 04:59 PM

Quote:

Originally Posted by parker

I'm interested in the experience with dedicated LPG + extractors too. U getting anywhere Baboon?

yeah man i am getting somewhere.. i am getting Pacemaker PH4499's fitted with a high flow exhaust for $830. the 4499's can fit with the viall converter but the 4480's are too large.
i'm happy as it can be done!