Spec V, first build, about $1000
08-05-2007, 11:14 AM
#201
0.5 BAR
Thread Starter
Join Date: Dec 2006
Posts: 141
Re: Spec V, first build, about $1000
the higest cylinder pressures are going to be higher near peak VE.
Static compression ratio is involves stroke as the whole length, dynamic takes into consideration the point in the stroke where the intake valve closes. With Nissan's Continously Variable Valve Timing there is a range of, I belive, 37* of crank rotation that the cam can be manipulated between in real time. Even more if you were to modify the internals of the cvvt unit. That would allow tuning to create a plateau of VE as opposed to a peak. The largest factor in determining dynamic CR is cam phasing.
Notice the flat TQ output, and notice how it comes on at 3k......... the Turbo spools sooner than that but Nissan tuned the ECU so that nothing really exciting happens before 3K. The cam timing just isn't ideal to utilize the boost being produced below 3K.
Static compression ratio is involves stroke as the whole length, dynamic takes into consideration the point in the stroke where the intake valve closes. With Nissan's Continously Variable Valve Timing there is a range of, I belive, 37* of crank rotation that the cam can be manipulated between in real time. Even more if you were to modify the internals of the cvvt unit. That would allow tuning to create a plateau of VE as opposed to a peak. The largest factor in determining dynamic CR is cam phasing.
Notice the flat TQ output, and notice how it comes on at 3k......... the Turbo spools sooner than that but Nissan tuned the ECU so that nothing really exciting happens before 3K. The cam timing just isn't ideal to utilize the boost being produced below 3K.
08-21-2007, 09:47 PM
#203
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Join Date: Dec 2006
Posts: 141
Re: Spec V, first build, about $1000
Should be going to the track Saturday, I fully expect to need new tires if I don't get my junk yard dual stage boost controller put in. 11psi is nice, except to my tires. 
...........or I'll end up going to Flordia to help put the motor together and back in a 500whp Spec V (should be 500+ w/ the upgrades)
But, I'm full of ---- according to some people
...........or I'll end up going to Flordia to help put the motor together and back in a 500whp Spec V (should be 500+ w/ the upgrades)
But, I'm full of ---- according to some people
10-28-2007, 10:36 AM
#205
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Join Date: Dec 2006
Posts: 141
Re: Spec V, first build, about $1000
I got bored and I've been meaning to do this for a while.
Yes, that's the start of a cold air box
I've added a 2 stage boostcontroler. It uses an EGR control solenoid from a random car, and a push button momentary switch mounted in a shift **** I made from 2 part epoxy. Hold the button run a more tire friendly 5 PSI, let off and run whatever the MBC is set for. I've been meaning to crawl under the car and make a bracket to hold a micro switch that is engaged by shift linkage so it becomes automatic when in first and 2nd gear.
Yes, that's the start of a cold air box
I've added a 2 stage boostcontroler. It uses an EGR control solenoid from a random car, and a push button momentary switch mounted in a shift **** I made from 2 part epoxy. Hold the button run a more tire friendly 5 PSI, let off and run whatever the MBC is set for. I've been meaning to crawl under the car and make a bracket to hold a micro switch that is engaged by shift linkage so it becomes automatic when in first and 2nd gear.
10-29-2007, 06:46 PM
#207
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Join Date: Jul 2006
Posts: 0
Re: Spec V, first build, about $1000
Originally Posted by memphis060
Good job, I hope you never need to jumpstart your car in a rainy day anymore…
Get the ---- out of here, you don't belong. this is not a site for you to show up, sell ---- on first post and talk dumb ---- with no proper intro. Post **** and know your ------- role.
Lets See some tire shredding Vids.
10-29-2007, 06:52 PM
#208
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Join Date: Dec 2006
Posts: 141
Re: Spec V, first build, about $1000
Originally Posted by memphis060
Good job, I hope you never need to jumpstart your car in a rainy day anymore…
10-31-2007, 03:04 PM
#209
0.5 BAR
Join Date: Oct 2006
Posts: 53
Re: Spec V, first build, about $1000
Originally Posted by 97EconoBox
Please don't pollute this thread with random dumb ---- that doesn't really matter. you're kidding right? The dude boosts a Spec V and you give him ---- because of where he put the battery?
Get the ---- out of here, you don't belong. this is not a site for you to show up, sell ---- on first post and talk dumb ---- with no proper intro. Post **** and know your ------- role.
Lets See some tire shredding Vids.
Get the ---- out of here, you don't belong. this is not a site for you to show up, sell ---- on first post and talk dumb ---- with no proper intro. Post **** and know your ------- role.
Lets See some tire shredding Vids.
As I said before to Big J… impressive job!
