Forced Induction Discussion of turbos , superchargers , and nitrous upgrades on the G35

Talk to me about FI Cams

Old Feb 23, 2010 | 07:51 PM
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Talk to me about FI Cams

I've seen so many different ones, HKS, BC, JWT, Nismo, etc. What are the differences? Which is best for my applications, Greddy 18G twins?
 
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Old Feb 23, 2010 | 08:33 PM
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Your sig implies that you've got a Vortech.

If you look around, it is NOT recommended (or worth while) to do cams unless you are building the motor.

Search for a while, here or my350z.com for a response.
 
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Old Feb 23, 2010 | 10:12 PM
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Vortech is gone, i'm running greddy twins on a built motor but before the motor goes back into the car I need to decide on cams.
 
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Old Feb 23, 2010 | 10:28 PM
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Not the best bang for the buck. What did you build on your motor already?
 
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Old Feb 24, 2010 | 12:45 AM
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From: BOSTON
Rods, pistons, bearings, head gaskets, head studs.
 
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Old Feb 24, 2010 | 12:54 AM
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From: Plano
I would do black nitride coated valves, new springs, upgraded drive shaft from the driveshaft shop
 
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Old Feb 24, 2010 | 10:13 AM
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From: BOSTON
I looked on driveshaft shops website, doesn't seem like they have driveshafts for G35\350z, just looks like they have rear axles.
 
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Old Feb 24, 2010 | 10:14 AM
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Originally Posted by HomieG35
Lol, I'd just go for the most lopey...
I don't want loopy lol, I want stock idle Homie... haha
 
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Old Feb 24, 2010 | 11:10 AM
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Depends on your goals. Generally speaking, if you want more top end, go with longer duration cams. If you want better low rpm performance, you want a shorter duration cams.

I am partial to the JWT cams because they provide more lift for a given duration than any other cams I have seen for our cars. The upside to more lift is that, in general, you get more air/fuel mixture into the cylinders. The downside is that you can't run those cams past about 7300-7500 rpm.

If you want to run past about 7500 rpm, you will want a cam with lower lift. In that case, take a look at the GTM and Brian Crower cams. Also, you should have a billit girdle to add rigidity to the block.
 
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Old Feb 24, 2010 | 07:38 PM
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From: Ladera Ranch / San Clemente
Originally Posted by TTG35forT
Depends on your goals. Generally speaking, if you want more top end, go with longer duration cams. If you want better low rpm performance, you want a shorter duration cams.

I am partial to the JWT cams because they provide more lift for a given duration than any other cams I have seen for our cars. The upside to more lift is that, in general, you get more air/fuel mixture into the cylinders. The downside is that you can't run those cams past about 7300-7500 rpm.

If you want to run past about 7500 rpm, you will want a cam with lower lift. In that case, take a look at the GTM and Brian Crower cams. Also, you should have a billit girdle to add rigidity to the block.
+1000000000000000000000 Good info!!

Personally I like the lopey sound...thats what I would go for.
 
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Old Feb 24, 2010 | 07:59 PM
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Terry is right, A good cam is the JWT S1 they are not super aggressive I am running JWT C2 I had JWT S1 and by changing to the C2 it moved my power band up up about 500rpm. I went from putting down 525ft/lbs @ 4500rpm to putting 525ft/bs at 5000rpm after swapping out cams. If you look on Jimwolftechnology.com I think it has good descriptions of his cams. I would advise you to get the JWT valve springs if you get the cams, they are not overly expensive.
 
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Old Feb 25, 2010 | 07:55 AM
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Originally Posted by Sylvan Lake V35
Terry is right, A good cam is the JWT S1 they are not super aggressive I am running JWT C2 I had JWT S1 and by changing to the C2 it moved my power band up up about 500rpm. I went from putting down 525ft/lbs @ 4500rpm to putting 525ft/bs at 5000rpm after swapping out cams. If you look on Jimwolftechnology.com I think it has good descriptions of his cams. I would advise you to get the JWT valve springs if you get the cams, they are not overly expensive.
+1

JWT states that you must use their valve springs for their "C" series cams.

Their "S" series cams are designed to be compatable with stock valve springs, though you would probably want to use the JWT valve springs if you want to push much plast 6500 rpm.
 
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Old Feb 25, 2010 | 01:31 PM
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Yeah theres no doubt im gonna be using JWT valve springs with the cams, only thing is are the "C" series cams a lot more loopy? I heard the S1's are not...
 
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Old Feb 25, 2010 | 02:55 PM
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From: raleigh-wood NC
are your worried about sound or about power?
 
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