im at the next stage of engine mods. its either cams or a ecu.

1.what am i better off doing first.
2.what ecu should i get.( i know its probobly been asked before).

cams from rpw are $1026. im thinking of getting stage 2 profile.

and no im not converting to dohc or 3rd gen!

If you go for stage 2 cams, you'll probably need the ECU to back them up, and get the most out of them.

i thought that but which ecu is recommended for a second gen.

Get an astron :D .

Umm, depending on what profile the cam will be, i think ECU will be more beneficial to have done first up.

How much power are you chasing (target/goal).

i just want to beet a commo at the lights so im after torque and acceleration.but 150+ atw would be nice.

i just want beet a commo at the lights so im after torque and acceleration.but 150+ atw would be nice.

Then its probably only worth looking at piggybacks, or even an air flow converter. Something cheap/simple that'll do the job.

eventually it will get turboed.

eventually it will get turboed.

Ahhhh i see.

Just out of curiosity, what kind of mods do you have done so far?

panel filter,ported heads,harder valves and valve seats, extractors,2.5" cat back.

panel filter,ported heads,harder valves and valve seats, extractors,2.5" cat back.

seeing as how you have future plans for forced induction, i'd stick with a stage 1 cam grind, as going any higher wont be required with a turbo. You should be able to run this w/o any real need for aftermarket management. After that, you should aim for a piggyback that has ignition control. Then go for a tune.

seeing as how you have future plans for forced induction, i'd stick with a stage 1 cam grind, as going any higher wont be required with a turbo. You should be able to run this w/o any real need for aftermarket management. After that, you should aim for a piggyback that has ignition control. Then go for a tune.

thanks. is there a prefered intercepter system or just get a decent one.

don't forget N/A cams aren't the same profile as turbo cams, i know very little about this.

if you're going to turbo it eventually stick with stock cams and just get the ecu now, make sure its able to handle what you're planning to do in the future though.

if you're going n/a, you'll need ecu with the cams anyway so its both

If you're going to go down the turbo route, like piv said, don't worry about the cams yet. The 12V 6G72 runs 10:1 compression, so you'll need to pull the engine down anyway to get it to a more workable ratio, so you may as well slot some cams in while the heads are off.

With regards to turbo cams, you want the exhaust duration to be slightly longer than the intake duration, to help the turbo spool up a bit quicker.

whatever grind of cam you choose and whatever ecu u choose id make sure i got them both done at the same time,

not much point in having a car with beefy cams and wont run right until u get a tune, and there is no point putting the ecu in first cos whats the point of tuning a stock car?

thats how id do it, but alot of ppl seem to like to make things difficult for themselves

If you want cams, stick with rpw's stage 1 profile or something similar. Any bigger and you are wasting your time without raising CR with pistons and headwork.

From a financial perspective, you'll save cash doing them both at the same time. Reason being if you do the ECU first, you'll just have to get it retuned for a second time when you do the cams. Or you could get mild cams and then ECU later, the margine of error in the factory tune apprently is safe for this.

But really you need to make up mind about what your plans are, and have a realistic sense how much you are willing to spend, and what you'll get out of it. Make up your mind on NA or FI first. If you are going FI leave the cams alone, start saving/spending on FI gear. You don;t want be spending a bucketload of money and then changing your mind and throwing it away.

E.g spending 4k+ on NA bolt-ons, and then deciding to start again with a FI setup..*cough* Mike *cough* :P

Realstically in your case, you are looking at spending quite alot of money for relatively minimal gain, and at the end of it all your car is still going to be old and worthless, to be frank. So it makse more sense to spend the money on upgrading to another car. However don't let me discourage you from persisting with this car, if it's really what you want.

Just please do your research thouroughly and be realistic about what you are going to achieve with how much you decide you are wiling to spend.

If you're going to go down the turbo route, like piv said, don't worry about the cams yet. The 12V 6G72 runs 10:1 compression, so you'll need to pull the engine down anyway to get it to a more workable ratio, so you may as well slot some cams in while the heads are off.

With regards to turbo cams, you want the exhaust duration to be slightly longer than the intake duration, to help the turbo spool up a bit quicker.

True. Although it depends on how far you want to go, and how much money you want to put into it (whether you want bottom end rebuilt, or run stock for as long as possible).

Stage 1 cams will be fine with an NA or FI setup, they're generally not much different in the lift department, but duration is improved over stock. The V6 has good static compression so there should be no dramas at all with bottom end torque and spooling.

It is possible to run low boost on a stock bottom end with just decomp gaskets.

I think you need to set some goals for power first, then start figuring things out from there. Theres more than one way to skin a cat.

thanks. is there a prefered intercepter system or just get a decent one.

To answer your question, i'm not 100% on what's best with a magna, so i wont go recommending anything. Others with experience in this will be able to help ya out on this one.

I would get cams and ECU done... you may be happy to leave it at that.

I would get cams and ECU done... you may be happy to leave it at that.

Exactly!

You did say you only wanted to beat commos. :P

Exactly!

You did say you only wanted to beat commos. :P


Like really.. its only 0-60kph even 80kph... cant do anymore:nuts:

If you're going to go down the turbo route, like piv said, don't worry about the cams yet. The 12V 6G72 runs 10:1 compression, so you'll need to pull the engine down anyway to get it to a more workable ratio, so you may as well slot some cams in while the heads are off.



10:1 should be ok with a mild level of boost, as long as there's good management/tune keeping it detonation-free. With low boost and factory cam, cylinder pressures won't actually be that high even with 10:1 static CR. E.g note the TRD Aurion that has a static CR of 10.8:1 and makes peak power @6400 rpm.

But yeah, to run more boost static CR will need to be lowered, along with strengthening work (at a minimum pistons suited to FI).

Well im getting the adaptronic soon and that should be hooked up in hopefully within 6-8 weeks so i can let you know then

']Well im getting the adaptronic soon and that should be hooked up in hopefully within 6-8 weeks so i can let you know then

Yeah give or take 2 years... lol

']Well im getting the adaptronic soon and that should be hooked up in hopefully within 6-8 weeks so i can let you know then

cheers.
i might just wait a couple of months and have a serious think about what to do, what i want etc. as Chisholm said if i go forced induction i should rebiuld the internals. so i might think of getting another block and start working on that and work up from there.

if the conrods and bottom end are anything like the 3.5L, the only new internals you will need are forged pistons. If you are only going mild boost, the stock cams will be fine.

cheers.
i might just wait a couple of months and have a serious think about what to do, what i want etc. so i might think of getting another block and start working on that and work up from there.


Why not get the twin cammer then? Will be much more rewarding.

if the conrods and bottom end are anything like the 3.5L, the only new internals you will need are forged pistons. If you are only going mild boost, the stock cams will be fine.

On that note, mytsgt93 look around the www.3si.org forums, plenty of people on there are doing up there SOHC's (with proper mods) but again, are a bit behind the DOHC's. No real idea what the bottom end is like but better off asking them