Dumb Questions Re: Cams

Posts specific to the 3.0 litre NA H6 engine

Dumb Questions Re: Cams

Postby Chovies » Wed Jul 22, 2015 7:54 pm

Hey All,

As my title suggests im pretty much about to ask some questions based off the 0% knowledge i have on the subject so here goes haha.

I want to get the whole "lumpy cam" thing going on my Spec B liberty, yet i have no idea on a few things;

- I don't know what sort of products to search for, Performance camshafts is what i thought it would be.

- Can you buy them off the shelf or do i have to get custom made ones ? I see price for shelf kits can be $500-$1000 and customs are just.... dayum...

- Do i even need to get the cams to make the lumpy idle or can you just get that sound via a tune ( i have heard you can tune that in )

- Am i even on the right track in my research haha


I will be buying a raptor SC kit around the end of year so i will be hoping to get the cams/sc/tune in around the same time.

Anthony
Chovies
 
Posts: 9
Joined: Sun Apr 27, 2014 12:44 pm
Car: 2008 4GEN 3.0R Spec.B

Re: Dumb Questions Re: Cams

Postby BillyCorgi » Wed Jul 22, 2015 8:13 pm

Your 3.0R engine has variable intake valve timing and lift.
The intake cam system was designed by Porsche.
You should not need to touch the camshafts.
Consider to get a Kido tune first.
Get your Short Shift Adaptor viewtopic.php?f=68&t=30525
Get your Gear Shift Rejuvenation Kit viewtopic.php?f=68&t=31240
Get your Centre Differential Rebuild viewtopic.php?f=6&t=31089
Want a custom built Brake Cylinder Stopper? viewtopic.php?f=6&t=31321
Need to hire a Guard Rolling Machine? viewtopic.php?f=6&t=31899
Get your BillyCorgi's "Not-4-Wimps" Chilli Sauce
User avatar
BillyCorgi
 
Posts: 1804
Joined: Tue Aug 20, 2013 10:11 pm
Location: Bankstown Area, Sydney
Car: Liberty 3.0R-B Wagon E85 Flex Fuel
Real name: Peter
Profile URL: www.facebook.com/CorgiWerx

Re: Dumb Questions Re: Cams

Postby Adrian2627 » Thu Jul 23, 2015 12:06 am

I'd written three different responses about lumpy cams, 253s, and posing when I realised you are probably talking about the sound WRXs make. That has nothing to do with the cams but more the exhaust system and the fact that the exhaust manifold runners are an uneven length to try and create a more consistent exhaust flow to reduce turbo lag. That's a very basic explanation but that's the sound you are hearing.
The EZ30 is an entirely different animal and the only similarity is that both engines are Boxers. When done properly the EZ emits a howl reminiscent of a 911 due in no small way to Porsche's influence in it's design. Trying to get an EZ to sound like a 20yo inefficient WRX will be undoing all that good work especially if you are thinking of supercharging. Save your coin, get the SC kit and a proper exhaust and leave all the crew driving old WRXs sitting at the lights wishing their cars sounded as sweet as yours.
Adrian2627
 
Posts: 1056
Joined: Mon Jan 07, 2008 6:11 pm
Location: Gold Coast
Car: BP5F (MY09) Legacy 2.0 GT Spec B
Real name: Adrian

Re: Dumb Questions Re: Cams

Postby Daytona » Thu Jul 23, 2015 4:26 am

When I first got my 3.0R, I always liked the sound that Subarus are associated with and was curious as to why the H6 didn't sound like that at all, in fact, the H6 didn't make much of a sound at all! Well, she did inside the car when you planted your foot. I started a bit of a journey to make the car go faster more than sound at first.

What I did first was change the headers and cats. I stuck hiflow cats in (100cell) but do kinda regret that. As soon as the headers and cats went in (cats are Xforce) a huge amount of raspiness and overall and the car sounded really bad. I had some work done to put in a couple resonators before the collector and it got rid of a lot of the rasp.

This was with a the 3rd cat deleted but the rest of the exhaust was stock. Then came the catback, also from Xforce. I ended up only using the Y pipe and mufflers from that, the Xforce resonator is pretty useless. I replaced that with a larger, 22" resonator. Car started to sound better. I probably would not recommend Xforce as brand though!

At the same time I was messing around with the exhaust was tuning.

In addition to the actual exhaust, what I've found changes the tone of the exhaust is the tune and also the fuel type. In NZ you can't get the fancy stuff (easily) so I'm running on Gull Force 10 and that has actually removed the last of the raspiness I had (I was using Shell 95 before).

Anyways, long story short - as Pete and Adrian have said, the H6 is a beautiful engine and the sound it produces is nothing like a WRX type sound. In my opinion it's way better and she really does howl when she's free breathing. I have to get my butt in gear and get some videos of what my car sounds like, but it's pretty awesome. There are various clips of what she sounds like opened up online though.

When I take her up to 6k and beyond through real twisty roads - it is an absolute blast.

As Pete mentioned - look into tuning as a first step. You can get a lot of extra performance with just a tune. I would then definitely look at the exhaust before the sc install as that's generally a requirement of the sc kit anyways.
Daytona
 
Posts: 102
Joined: Mon Mar 02, 2015 9:45 am
Location: New Zealand

Re: Dumb Questions Re: Cams

Postby Chovies » Thu Jul 23, 2015 6:44 pm

Not looking at the actual note/ volume coming from the exhaust, i already have a full exhaust system and im happy with the sound.

I'm after the sound that cams bring while idleing, most commonly heard on V8's but you can get a similar sound on other cars.

Here's the idle sound on a rexy.
https://www.youtube.com/watch?v=OLyXLbTr3sY

I literally am just doing this as a poser, if the price is good im not fussed on the cams making performance i just want the sound haha
Chovies
 
Posts: 9
Joined: Sun Apr 27, 2014 12:44 pm
Car: 2008 4GEN 3.0R Spec.B

Re: Dumb Questions Re: Cams

Postby BillyCorgi » Thu Jul 23, 2015 6:55 pm

When I was a youngster and you wanted a lumpy idle to impress, you would pull out the choke?
Ah, take me back to Big Chief on Parramatta Road next to Duck Creek.
Anyone else here remember those days?
Get your Short Shift Adaptor viewtopic.php?f=68&t=30525
Get your Gear Shift Rejuvenation Kit viewtopic.php?f=68&t=31240
Get your Centre Differential Rebuild viewtopic.php?f=6&t=31089
Want a custom built Brake Cylinder Stopper? viewtopic.php?f=6&t=31321
Need to hire a Guard Rolling Machine? viewtopic.php?f=6&t=31899
Get your BillyCorgi's "Not-4-Wimps" Chilli Sauce
User avatar
BillyCorgi
 
Posts: 1804
Joined: Tue Aug 20, 2013 10:11 pm
Location: Bankstown Area, Sydney
Car: Liberty 3.0R-B Wagon E85 Flex Fuel
Real name: Peter
Profile URL: www.facebook.com/CorgiWerx

Re: Dumb Questions Re: Cams

Postby KiDo_Tuning » Fri Jul 24, 2015 4:23 pm

10 degrees of cam advance at idle, will give the brap brap noise you crave
KiDo Racing Tunes Info: HERE

Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people
User avatar
KiDo_Tuning
 
Posts: 2801
Joined: Sun Jun 10, 2012 11:53 pm
Car: Subarus + Nissans
Real name: Matt

Re: Dumb Questions Re: Cams

Postby BigBCalais » Sat Jul 25, 2015 12:00 am

KiDo_Tuning wrote:10 degrees of cam advance at idle, will give the brap brap noise you crave


Is there any dangers to doing this?
dr20t wrote:Simple rule. If you act like a dick then you deserved to get dicked

06 Blitzen 6mt
'Lightly' modified: Eyelids, HIDs, Outback bonnet, 2 1/4" Exhaust with HiTech mufflers, Lip spoiler, E̶n̶k̶e̶i̶ ̶T̶6̶s̶ ̶1̶8̶x̶8̶.̶5̶ ̶w̶h̶e̶e̶l̶s̶, Rays 57Valkyrie 18x8.5, Sti Pink Springs, Kido tune, Brembos
.
User avatar
BigBCalais
 
Posts: 377
Joined: Sun Mar 09, 2014 1:13 pm
Location: Vic
Car: Black 06 Blitzen 6MT
Real name: Bryce
Profile URL: viewtopic.php?f=10&t=26522

Re: Dumb Questions Re: Cams

Postby Kesh » Sat Jul 25, 2015 2:31 pm

I would love a lumpy idle haha!
Kesh
 
Posts: 77
Joined: Wed Apr 15, 2015 10:08 pm

Re: Dumb Questions Re: Cams

Postby 666 » Mon Jul 27, 2015 5:08 pm

BillyCorgi wrote:When I was a youngster and you wanted a lumpy idle to impress, you would pull out the choke?
Ah, take me back to Big Chief on Parramatta Road next to Duck Creek.
Anyone else here remember those days?


Hey you were there too! I remember Big Chief fondly, Saturday Night drive to the City always started at Big Chiefs.

And I though I was the only Old Bloke on this forum!

Thanks for the memories.

Rob
666
 
Posts: 122
Joined: Sat May 28, 2011 10:21 am
Car: Spec.B
Real name: Rob

Re: Dumb Questions Re: Cams

Postby KiDo_Tuning » Tue Jul 28, 2015 11:23 am

BigBCalais wrote:
KiDo_Tuning wrote:10 degrees of cam advance at idle, will give the brap brap noise you crave


Is there any dangers to doing this?


O2 sensor eater and poor vacuum at idle
KiDo Racing Tunes Info: HERE

Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people
User avatar
KiDo_Tuning
 
Posts: 2801
Joined: Sun Jun 10, 2012 11:53 pm
Car: Subarus + Nissans
Real name: Matt

Re: Dumb Questions Re: Cams

Postby BillyCorgi » Tue Jul 28, 2015 12:57 pm

So O2 sensor destruction should happen with software advance OR with a permanent cam timing regrind?
Get your Short Shift Adaptor viewtopic.php?f=68&t=30525
Get your Gear Shift Rejuvenation Kit viewtopic.php?f=68&t=31240
Get your Centre Differential Rebuild viewtopic.php?f=6&t=31089
Want a custom built Brake Cylinder Stopper? viewtopic.php?f=6&t=31321
Need to hire a Guard Rolling Machine? viewtopic.php?f=6&t=31899
Get your BillyCorgi's "Not-4-Wimps" Chilli Sauce
User avatar
BillyCorgi
 
Posts: 1804
Joined: Tue Aug 20, 2013 10:11 pm
Location: Bankstown Area, Sydney
Car: Liberty 3.0R-B Wagon E85 Flex Fuel
Real name: Peter
Profile URL: www.facebook.com/CorgiWerx

Re: Dumb Questions Re: Cams

Postby KiDo_Tuning » Tue Jul 28, 2015 1:37 pm

BillyCorgi wrote:So O2 sensor destruction should happen with software advance OR with a permanent cam timing regrind?


Both, the overlap has fuel ignition in the manifold.

Ask late model V8 guys with the Megadeath cam who long their O2 sensors last
KiDo Racing Tunes Info: HERE

Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people
User avatar
KiDo_Tuning
 
Posts: 2801
Joined: Sun Jun 10, 2012 11:53 pm
Car: Subarus + Nissans
Real name: Matt

Re: Dumb Questions Re: Cams

Postby BillyCorgi » Tue Jul 28, 2015 2:24 pm

Thanks Matt,
So the desire for a lumpy camshaft is a folly?
Better "pull the choke out"?
Get your Short Shift Adaptor viewtopic.php?f=68&t=30525
Get your Gear Shift Rejuvenation Kit viewtopic.php?f=68&t=31240
Get your Centre Differential Rebuild viewtopic.php?f=6&t=31089
Want a custom built Brake Cylinder Stopper? viewtopic.php?f=6&t=31321
Need to hire a Guard Rolling Machine? viewtopic.php?f=6&t=31899
Get your BillyCorgi's "Not-4-Wimps" Chilli Sauce
User avatar
BillyCorgi
 
Posts: 1804
Joined: Tue Aug 20, 2013 10:11 pm
Location: Bankstown Area, Sydney
Car: Liberty 3.0R-B Wagon E85 Flex Fuel
Real name: Peter
Profile URL: www.facebook.com/CorgiWerx


Return to 3.0R & 3.6R engine specific

Who is online

Users browsing this forum: No registered users and 8 guests