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lolo
Fully Licenced
503 Posts
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 Posted - 12 Jun 2006 : 01:34:55 AM
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Im thinking about getting new cams but I dont know where to go and what kind of cams to get can anyone help me. Im looking for something that wil be compatible with a turbo setup...anyone got any idea???
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Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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lolo
Fully Licenced
503 Posts
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Posted - 02 Jul 2006 : 10:24:31 PM
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| I guess evryone is as clueless as I am |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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mouce
National Driver
1525 Posts
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Posted - 03 Jul 2006 : 12:21:28 PM
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You've only got one cam in there.
Now when you say it needs to be compatible with a turbo setup, does that mean that you want to have it without turbos now, but you want to bolt them on sometime in the future? Because (from what I know of it all), it's almost impossible to find a cam that will give you the most of the engine in n/a and f.i. form. A cam that works wonders for n/a will usually not be the best for f.i. and vice versa.
If you're going to go to the trouble of doing a f.i. setup properly, then I'd suggest that you should wait until the time comes to actually fit the chargers, and when you're getting the chargers fitted get the cam changed. Also...once that's all been fitted, get a dyno tune with a custom chip and you'll never look back.
I could be wrong, there might be a cam out there that will work with n/a and f.i. equally well...but I'd be surprised.
As for who to talk to about it...Ask around a few of the more well known engine modding businesses around Melbourne.
The guys out at EFI dynamics in Lilydale have a pretty good rep from what I've heard of them.
EFI Dynamics
Fact 12 Cavehill Ind Estate
Cavehill Rd
Lilydale
VIC 3140
Phone: 03 9735 4513
Fax 03 9735 2334
Website: www.efidynamics.com
Email: info@efidynamics.com |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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lolo
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503 Posts
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Posted - 03 Jul 2006 : 9:30:36 PM
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Sweet,yeah thats what I mean by compatible but that kinda stuffs my plans lol I figured Id get as much out of the engine in n/a form and so I dont have to do that much when I strap a turbo on..... oh well thanks.... wat about roller rockers... what are they are they compatible with forced induction??? and what do they do??\\
I think I sound a bit like a dunce but Im never gonna know if I dont ask someone lol |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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mouce
National Driver
1525 Posts
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Posted - 03 Jul 2006 : 10:18:09 PM
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Roller rockers reduce the amount of friction between the rocker arm and the pushrod. The lower the friction the more power available to the wheels. Often the ratio is increased if you fit after market ones. A higher ratio means that the valves open a little further, allowing more air-fuel/exhaust in/out of the cylinder.
Yella Terra do some really nice ones. If you put in higher ratio rockers though, you may not need to bother changing your cam for quite a while. Most of the time, 'custom' cams are only ground to give increased lift (not duration). You get the same effect from a set of higher ratio rockers.
If you're just thinking of getting the most out of a n/a engine, then roller rockers are a good move, but a good port/polish would be much more of an improvment. That's a bit more work though. Roller rockers can be installed by just about anyone with a good tool box.
Yeah...they are quite alright for f.i. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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lolo
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503 Posts
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Posted - 04 Jul 2006 : 8:34:35 PM
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| Cheers, it looks like I'll go with roller rockers. |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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mouce
National Driver
1525 Posts
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Posted - 04 Jul 2006 : 9:34:26 PM
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Even if you just keep them at the standard ratio the allow the surface to 'roll' over them rather than the traditional ones where it needs to slide.
You think you'll up the ratio a bit? |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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lolo
Fully Licenced
503 Posts
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Posted - 04 Jul 2006 : 9:58:29 PM
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| hell yeah, I want a noticable kick in the pants... what ratio dou you think will do.... what range of ratios are there, im willing to spend up to $800... |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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mouce
National Driver
1525 Posts
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Posted - 04 Jul 2006 : 10:49:28 PM
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The highest I've heard of is a 1.9:1 roller rocker, but when you start increasing the ratio you also need to look at the clearance to the rocker cover. Put a higher ratio in and you may need to put a spacer in so that your rocker cover still clears them.
Clearly the higher the ratio the greater the opening of the valves. To get the most out of them you should probably look at a custom memcal too, but the higher ratio rockers on their own should be noticable.
For the life of me I can't remember the ratio of the stock rockers. But I've heard of a lot of people putting in the 1.6:1 roller rockers from Yella Terra, and I've heard a lot of good things about them.
Again...EFI dynamics should be able to point you in the right direction. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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lolo
Fully Licenced
503 Posts
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Posted - 04 Jul 2006 : 11:46:31 PM
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| Cheers mate, what would Aussie's Fastest V6 to be do without lol when Im on the front page of Street Commodores I swear I'll give ya a plug |
Marcus Rogulic R.I.P (1980-2007)
"The Good Die Young" |
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Brum
P Plater
65 Posts
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Posted - 27 Jul 2006 : 8:44:13 PM
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Just wondering, is there any point in putting in roller rockers if i have a stock engine and exhaust? Will i need to change anything, like can i still run a stock memcal? And is there going to be much power gain for the money involved? How much roughly do they cost?
Cheers...  |
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mouce
National Driver
1525 Posts
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Posted - 27 Jul 2006 : 9:27:00 PM
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If the engine and exhaust is going to stay stock I'd probably not bother. If you were going to look at full length sports pipes then I'd say that they could be useful, and I say could. Because you don't NEED to get them.
Higher ratio roller rockers normally give a bit of an increase in performance. But I'd say that there are cheaper and easier mods to perform before you think about them. Anyway to get the most out of them you'd need to upgrade a few other bits and pieces.
For instance, a CAI would really help, as would sports pipes, and the memcal...you can run the standard one, but to get the most out of them a slightly modified chip would probably help. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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