Looking for the pros and cons of different cam setups.
02-02-2006, 12:11 PM
#1
Play with my balls
Thread Starter
iTrader: (151)
Join Date: Sep 2002
Location: Charlotte, NC
Posts: 6,542
Looking for the pros and cons of different cam setups.
What are my pros and cons with each of these setups? In terms of drivability and reliability. Why would one be better than the other? Why would one not beneficial over the other. In what applications are each of these setups used....ie, N/A, FI, etc...? I'm trying to find out as much as I can about these before I act upon my purchase and end up with something I can not use. I understand the basic functions, but any further insightful info will help me in my quest to. GO FASTA!!! 
NISMO R Tune setup 262 degrees of duration .426" lift on the intake side
256 degrees duration on the exhaust side
NISMO's Spec 1 setup 276 degrees duration .433 " lift. The exhaust cam is 256 degrees duration with .413" of lift.
NISMO's Spec 2 cams are for the ultimate in top end power. 284 degrees of duration, and .433" lift on the intake side, exhaust cam features 268 degrees duration with .413" lift.
NISMO titanium valves weight INT (genuine 51.4g→NISMO 31.0g) EXH (genuine 46.8g→NISMO 28.7g).
Tomei
256 duration with 10.2 mm lift - offered in intake and exhaust cams
264 duration with 10.22 mm lift - offered in intake and exhaust cams
268 duration with 10.5 mm lift - offered in intake and exhaust cams
Originally Posted by NISMO
NISMO R Tune setup 262 degrees of duration .426" lift on the intake side
256 degrees duration on the exhaust side
NISMO's Spec 1 setup 276 degrees duration .433 " lift. The exhaust cam is 256 degrees duration with .413" of lift.
NISMO's Spec 2 cams are for the ultimate in top end power. 284 degrees of duration, and .433" lift on the intake side, exhaust cam features 268 degrees duration with .413" lift.
NISMO titanium valves weight INT (genuine 51.4g→NISMO 31.0g) EXH (genuine 46.8g→NISMO 28.7g).
Tomei
256 duration with 10.2 mm lift - offered in intake and exhaust cams
264 duration with 10.22 mm lift - offered in intake and exhaust cams
268 duration with 10.5 mm lift - offered in intake and exhaust cams
02-02-2006, 08:08 PM
#3
Originally Posted by Deckdout2
What are my pros and cons with each of these setups? In terms of drivability and reliability. Why would one be better than the other? Why would one not beneficial over the other. In what applications are each of these setups used....ie, N/A, FI, etc...? I'm trying to find out as much as I can about these before I act upon my purchase and end up with something I can not use. I understand the basic functions, but any further insightful info will help me in my quest to. GO FASTA!!!
You must have been bored at work today, or ticked that the slow **** rental Sentra beat you by 1.5 cars at the green light.
02-03-2006, 05:43 AM
#6
Turbo Cams vs. NA Cams
NA cams need overlap to help suck air into the cylinders for compression. Where as with a turbo, since the air is forced in, you don't want overlap or you're blowing some of your boost out your exhaust valves. Overlap is where the intake and exhaust valves are both open for a short period of time.
Most turbo cams have longer duration too, to try and squeeze as much air in there as possible. This is the basics you can use in making your decision.
Now my suggestion to you is, if your quest is to go fast, you really need to look at your goal. Are you going boost or staying NA. The key to a fast car is balance you want to make sure you include everything engine related are all on the same page. You have to consider all apps in your cam decision's or you will be so lost building your car.
NA cams need overlap to help suck air into the cylinders for compression. Where as with a turbo, since the air is forced in, you don't want overlap or you're blowing some of your boost out your exhaust valves. Overlap is where the intake and exhaust valves are both open for a short period of time.
Most turbo cams have longer duration too, to try and squeeze as much air in there as possible. This is the basics you can use in making your decision.
Now my suggestion to you is, if your quest is to go fast, you really need to look at your goal. Are you going boost or staying NA. The key to a fast car is balance you want to make sure you include everything engine related are all on the same page. You have to consider all apps in your cam decision's or you will be so lost building your car.
02-03-2006, 06:51 AM
#7
Play with my balls
Thread Starter
iTrader: (151)
Join Date: Sep 2002
Location: Charlotte, NC
Posts: 6,542
Originally Posted by SR20DEN
You must have been bored at work today, or ticked that the slow **** rental Sentra beat you by 1.5 cars at the green light.
02-03-2006, 07:18 AM
#8
Play with my balls
Thread Starter
iTrader: (151)
Join Date: Sep 2002
Location: Charlotte, NC
Posts: 6,542
Originally Posted by japmaxSE
Turbo Cams vs. NA Cams
NA cams need overlap to help suck air into the cylinders for compression. Where as with a turbo, since the air is forced in, you don't want overlap or you're blowing some of your boost out your exhaust valves. Overlap is where the intake and exhaust valves are both open for a short period of time.
Most turbo cams have longer duration too, to try and squeeze as much air in there as possible. This is the basics you can use in making your decision.
Now my suggestion to you is, if your quest is to go fast, you really need to look at your goal. Are you going boost or staying NA. The key to a fast car is balance you want to make sure you include everything engine related are all on the same page. You have to consider all apps in your cam decision's or you will be so lost building your car.
NA cams need overlap to help suck air into the cylinders for compression. Where as with a turbo, since the air is forced in, you don't want overlap or you're blowing some of your boost out your exhaust valves. Overlap is where the intake and exhaust valves are both open for a short period of time.
Most turbo cams have longer duration too, to try and squeeze as much air in there as possible. This is the basics you can use in making your decision.
Now my suggestion to you is, if your quest is to go fast, you really need to look at your goal. Are you going boost or staying NA. The key to a fast car is balance you want to make sure you include everything engine related are all on the same page. You have to consider all apps in your cam decision's or you will be so lost building your car.
In other words you are saying that if it's a NA setup a lower stage setup would be more beneficial, and a higher stage would be for boosting? This is my interpretation of that and it seems makes sense. Would a setup equivilant to the Nismo R Tune be more applicable to me? I also suspect that I need to upgrade the valve springs and rod bolts if I'm going to eventually raise my rev limiter as well to squeeze out that hidden power from any of these cam setups. Would this be the relationship of balance that you are referring to?
With installing cams is my lowend actually lost, or is it just a shift in the powerband towards the highend?
02-03-2006, 08:01 AM
#9
Now it depends on where you want that power to be achieved. Technically the lower the duration the lower the peak power will be achieved (x=RPM). For example the Tomei 264 is ideal for all around power. Now since your increasing the rev limiter anything around 264* 10.02" to say 270*10.9" duration is ideal for say an 8krev. You can go a little higher than this but IMO for safety you will need to go with dual valve springs and titanium retainers for added safety. 270 duration cam is a bit much for NA depends, your deff going to need to increase the airflow efficiency. For example increase the compression ration via changing pistons or heads. Stuff like this which I don't think you had in mind so I would stick with an all around cam something like a stage 2 and get the dual valve springs and titanium retainers for safety and reliability.
02-03-2006, 01:05 PM
#12
Did you consider the eBay cams? Apparently they have the same specs as the JWT cams: 260 deg duration, .428"(10.9MM) lift (got that from the JWT website) and those have seen some nice gains on a NA VQ35.
More details here: http://forums.maxima.org/showthread....ight=ebay+cams
More details here: http://forums.maxima.org/showthread....ight=ebay+cams
02-03-2006, 01:23 PM
#13
Play with my balls
Thread Starter
iTrader: (151)
Join Date: Sep 2002
Location: Charlotte, NC
Posts: 6,542
Originally Posted by japmaxSE
Do you plan on upgrading any other internals?
I'll get back to you on the post before this when I get home tonight.
02-03-2006, 01:27 PM
#14
Play with my balls
Thread Starter
iTrader: (151)
Join Date: Sep 2002
Location: Charlotte, NC
Posts: 6,542
Originally Posted by Puppetmaster
Did you consider the eBay cams? Apparently they have the same specs as the JWT cams: 260 deg duration, .428"(10.9MM) lift (got that from the JWT website) and those have seen some nice gains on a NA VQ35.
More details here: http://forums.maxima.org/showthread....ight=ebay+cams
More details here: http://forums.maxima.org/showthread....ight=ebay+cams
02-03-2006, 02:20 PM
#15
Originally Posted by Deckdout2
This is what actually resparked my interest. 1k plus for cams was hard to swallow. Not that they are not worth it, but I'd still like to get the Cattman headers first, which takes away a chunk of my modding funds. Swinging the group deal is a little more realistic for me, so yes I've been keeping up with that somewhat.
. I'll hit ya up on email sometime.
02-03-2006, 11:15 PM
#18
Originally Posted by Deckdout2
What feasible options do I have to work with besides what's listed? If pistons and heads are in that equation, then no. At least not at this time. As for the valve springs and rod bolts, yes those will be upgraded.
I'll get back to you on the post before this when I get home tonight.
I'll get back to you on the post before this when I get home tonight.
IMO Nismo Stage 1 or 2 for NA or Tomei Stage 2 or 3
JWT
Thread
Thread Starter
Forum
Replies
Last Post
spencerwh1
Maximas for Sale / Wanted
4
06-30-2016 05:44 AM