TurboSpec Cams ???
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TurboSpec Cams ???
Just wanted to find out from the Turbo-Charged 4th-Geners if they know or, are in the proccess of using Turbo-Based Cams. I know of shops that can resurface/grind existing cams into Turbo Spec. pretty cheaply, but will it result in better performance with turbo applications???? Also one must be able to suppliment an After-market ECU to accomidate the mod.. Feedback would be great. Thanks..
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The Turbo Spec Cams are resurfaced cams designed for engines with forced-induction. You should be able to get better timing. Aggressive valve lifting and higher Revs Peaks!!! It will maximize power with minimal overlap. Resulting in greater Torque and Top-end performce!! I'm not sure if the application was ever tested on a Maxima???
Originally posted by Jeff92se
What exactly are "Turbo spec" cams???? And regrinds usually suck
What exactly are "Turbo spec" cams???? And regrinds usually suck
Originally posted by Morfeus17
The Turbo Spec Cams are resurfaced cams designed for engines with forced-induction.
The Turbo Spec Cams are resurfaced cams designed for engines with forced-induction.
You should be able to get better timing. Aggressive valve lifting and higher Revs Peaks!!!
Better timing?? What timing? Ignition or cam timing? You can't change change the cam timing w/o cam gears and you can't change ignition timing w/o a reprogramed ecu. Why do you need higher revs w/ a turbo anyway? Not necessarily needed, wanted or warranted.
It will maximize power with minimal overlap. Resulting in greater Torque and Top-end performce!!
Now you CAN get them reground, but what exactly are you going to tell your cam grinder?? You have to tell them exact, duration, lift, overlap. You have to probably have to tell them HOW you want the lift ground in, steep ramps, gradual ramping etc....
Anyone want to talk emissions now??
Get ahold of Turbo95 and see if he's willing to share some info. He's the one to talk to.
Saying "turbo cams" is like saying one turbo is good for all applications.
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I do agree with you. I completely understand your point and all those veriables do play apart in performance tuning with Turbo setups. But what I'm saying is, if one wants to run high boost effectively!! It "MAY" warrent cams that can perform the job assuming that you do internals.. Its like running 15-20+ psi with stock internals. You are asking for trouble!!! I maybe wrong, but I don't think that our stock cams will endure high amounts of power by them selves.
But I do know that, they have shops which forge cams specifically to take high amonuts of load, and spec'd out for both balance ,torque and power. Some even go futher in reprogram your ecu to match the Cam setup for your application. Please correct me if I'm wrong.
Maybe Turbo95, may have more input on this matter??? Thanks for the info..
But I do know that, they have shops which forge cams specifically to take high amonuts of load, and spec'd out for both balance ,torque and power. Some even go futher in reprogram your ecu to match the Cam setup for your application. Please correct me if I'm wrong.
Maybe Turbo95, may have more input on this matter??? Thanks for the info..
Originally posted by Jeff92se
[B]
I know that they are. But there isn't just ONE set of turbo cams. Depends on what you are running in terms of compression, turbo, psi, valvetrain, internals and so on....
Better timing?? What timing? Ignition or cam timing? You can't change change the cam timing w/o cam gears and you can't change ignition timing w/o a reprogramed ecu. Why do you need higher revs w/ a turbo anyway? Not necessarily needed, wanted or warranted.
You know what you are talking about? Depending on what turbo you are running, you may want MORE or less overlap. And unless the cams are designed very,very well, it's difficult to get both torque and top end performance. It's usually a trade off.
Now you CAN get them reground, but what exactly are you going to tell your cam grinder?? You have to tell them exact, duration, lift, overlap. You have to probably have to tell them HOW you want the lift ground in, steep ramps, gradual ramping etc....
Anyone want to talk emissions now??
Get ahold of Turbo95 and see if he's willing to share some info. He's the one to talk to.
Saying "turbo cams" is like saying one turbo is good for all applications.
[B]
I know that they are. But there isn't just ONE set of turbo cams. Depends on what you are running in terms of compression, turbo, psi, valvetrain, internals and so on....
Better timing?? What timing? Ignition or cam timing? You can't change change the cam timing w/o cam gears and you can't change ignition timing w/o a reprogramed ecu. Why do you need higher revs w/ a turbo anyway? Not necessarily needed, wanted or warranted.
You know what you are talking about? Depending on what turbo you are running, you may want MORE or less overlap. And unless the cams are designed very,very well, it's difficult to get both torque and top end performance. It's usually a trade off.
Now you CAN get them reground, but what exactly are you going to tell your cam grinder?? You have to tell them exact, duration, lift, overlap. You have to probably have to tell them HOW you want the lift ground in, steep ramps, gradual ramping etc....
Anyone want to talk emissions now??
Get ahold of Turbo95 and see if he's willing to share some info. He's the one to talk to.
Saying "turbo cams" is like saying one turbo is good for all applications.
Donating Maxima.org Member
Joined: Jan 2001
Posts: 500
From: Boise, ID
Re: TurboSpec Cams ???
I think regrinding 4 cams will still be expensive and will take time to develop.
If one is inclined to improve top-end performance for a boosted 4th gen it would be much easier and cheaper just to get a variable intake manifold.
If one is inclined to improve top-end performance for a boosted 4th gen it would be much easier and cheaper just to get a variable intake manifold.
Well, you lost me there. Camshafts don't "endure" any more force than with normally aspirated applications. Maybe if you run very stiff valve springs or very high rpms. But that's more a factor of cam lift and engine revs. Not how much boost is run. I know you want to run boost. Why don't you get your car boosted first, then worry about cams. Because unless you have a pretty built short/long block, you will probably not be able to run enough boost to justify $1500-$2000 in quality billet cams anyway. Every gander at what nigel and Kevin are running on thier turbo/sc maximas w/ stock cams?? Get there first and then maybe you can start considering cams.
Originally posted by Morfeus17
I do agree with you. I completely understand your point and all those veriables do play apart in performance tuning with Turbo setups. But what I'm saying is, if one wants to run high boost effectively!! It "MAY" warrent cams that can perform the job assuming that you do internals.. Its like running 15-20+ psi with stock internals. You are asking for trouble!!! I maybe wrong, but I don't think that our stock cams will endure high amounts of power by them selves.
But I do know that, they have shops which forge cams specifically to take high amonuts of load, and spec'd out for both balance ,torque and power. Some even go futher in reprogram your ecu to match the Cam setup for your application. Please correct me if I'm wrong.
Maybe Turbo95, may have more input on this matter??? Thanks for the info..
I do agree with you. I completely understand your point and all those veriables do play apart in performance tuning with Turbo setups. But what I'm saying is, if one wants to run high boost effectively!! It "MAY" warrent cams that can perform the job assuming that you do internals.. Its like running 15-20+ psi with stock internals. You are asking for trouble!!! I maybe wrong, but I don't think that our stock cams will endure high amounts of power by them selves.
But I do know that, they have shops which forge cams specifically to take high amonuts of load, and spec'd out for both balance ,torque and power. Some even go futher in reprogram your ecu to match the Cam setup for your application. Please correct me if I'm wrong.
Maybe Turbo95, may have more input on this matter??? Thanks for the info..
Senior Member
Joined: Aug 2000
Posts: 2,806
Re: TurboSpec Cams ???
Why spend $800-1500 on a set of cams when you can buy a bigger turbo 
?. To properly do cams you have to buy new billets or non worn a.k.a. blanks from nissan. Then have the different specs reground onto them. Besides a HKS GT3037 is more than enough turbo for a VQ. You'd be throwing rods out of the block before that turbo is maxed out 
.
?. To properly do cams you have to buy new billets or non worn a.k.a. blanks from nissan. Then have the different specs reground onto them. Besides a HKS GT3037 is more than enough turbo for a VQ. You'd be throwing rods out of the block before that turbo is maxed out .
Originally posted by Morfeus17
Just wanted to find out from the Turbo-Charged 4th-Geners if they know or, are in the proccess of using Turbo-Based Cams. I know of shops that can resurface/grind existing cams into Turbo Spec. pretty cheaply, but will it result in better performance with turbo applications???? Also one must be able to suppliment an After-market ECU to accomidate the mod.. Feedback would be great. Thanks..
Just wanted to find out from the Turbo-Charged 4th-Geners if they know or, are in the proccess of using Turbo-Based Cams. I know of shops that can resurface/grind existing cams into Turbo Spec. pretty cheaply, but will it result in better performance with turbo applications???? Also one must be able to suppliment an After-market ECU to accomidate the mod.. Feedback would be great. Thanks..
Thread Starter
Senior Member
Joined: Mar 2001
Posts: 470
Agree.. I was just seeing if there were other options for guys willing do the extreme.
What I'm supprised about is, the turbo kit posted on the forum looks complete and the price is decent. Please, correct me if I'm wrong. But in his discription on items listed, he did not include headgaskets to lower the compression. Instead, he uses a fuel regulator only called (Vortech 12:1), I beleive. Would you need to have both a raised head and(Vortech 12:1) to prevent detination??? Also, how reliable is a (Vortech 12:1)??? Any detination yet???
What I'm supprised about is, the turbo kit posted on the forum looks complete and the price is decent. Please, correct me if I'm wrong. But in his discription on items listed, he did not include headgaskets to lower the compression. Instead, he uses a fuel regulator only called (Vortech 12:1), I beleive. Would you need to have both a raised head and(Vortech 12:1) to prevent detination??? Also, how reliable is a (Vortech 12:1)??? Any detination yet???
Originally posted by Jeff92se
Well, you lost me there. Camshafts don't "endure" any more force than with normally aspirated applications. Maybe if you run very stiff valve springs or very high rpms. But that's more a factor of cam lift and engine revs. Not how much boost is run. I know you want to run boost. Why don't you get your car boosted first, then worry about cams. Because unless you have a pretty built short/long block, you will probably not be able to run enough boost to justify $1500-$2000 in quality billet cams anyway. Every gander at what nigel and Kevin are running on thier turbo/sc maximas w/ stock cams?? Get there first and then maybe you can start considering cams.
Well, you lost me there. Camshafts don't "endure" any more force than with normally aspirated applications. Maybe if you run very stiff valve springs or very high rpms. But that's more a factor of cam lift and engine revs. Not how much boost is run. I know you want to run boost. Why don't you get your car boosted first, then worry about cams. Because unless you have a pretty built short/long block, you will probably not be able to run enough boost to justify $1500-$2000 in quality billet cams anyway. Every gander at what nigel and Kevin are running on thier turbo/sc maximas w/ stock cams?? Get there first and then maybe you can start considering cams.
Originally posted by Morfeus17
Agree.. I was just seeing if there were other options for guys willing do the extreme.
What I'm supprised about is, the turbo kit posted on the forum looks complete and the price is decent. Please, correct me if I'm wrong. But in his discription on items listed, he did not include headgaskets to lower the compression. Instead, he uses a fuel regulator only called (Vortech 12:1), I beleive. Would you need to have both a raised head and(Vortech 12:1) to prevent detination??? Also, how reliable is a (Vortech 12:1)??? Any detination yet???
Agree.. I was just seeing if there were other options for guys willing do the extreme.
What I'm supprised about is, the turbo kit posted on the forum looks complete and the price is decent. Please, correct me if I'm wrong. But in his discription on items listed, he did not include headgaskets to lower the compression. Instead, he uses a fuel regulator only called (Vortech 12:1), I beleive. Would you need to have both a raised head and(Vortech 12:1) to prevent detination??? Also, how reliable is a (Vortech 12:1)??? Any detination yet???
Donating Maxima.org Member
Joined: Jan 2001
Posts: 500
From: Boise, ID
Originally posted by Morfeus17
Agree.. I was just seeing if there were other options for guys willing do the extreme.
What I'm supprised about is, the turbo kit posted on the forum looks complete and the price is decent. Please, correct me if I'm wrong. But in his discription on items listed, he did not include headgaskets to lower the compression. Instead, he uses a fuel regulator only called (Vortech 12:1), I beleive. Would you need to have both a raised head and(Vortech 12:1) to prevent detination??? Also, how reliable is a (Vortech 12:1)??? Any detination yet???
Agree.. I was just seeing if there were other options for guys willing do the extreme.
What I'm supprised about is, the turbo kit posted on the forum looks complete and the price is decent. Please, correct me if I'm wrong. But in his discription on items listed, he did not include headgaskets to lower the compression. Instead, he uses a fuel regulator only called (Vortech 12:1), I beleive. Would you need to have both a raised head and(Vortech 12:1) to prevent detination??? Also, how reliable is a (Vortech 12:1)??? Any detination yet???
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Thats what I thought... Well my question know is with this Turbo-kit, is it "Recommended" to keep the comperssion as "IS" with-out raising the head??? And using the Fuel Management Unit only, will be safe on our motors runing boost??? Highload = lowering compression = Raised Head.. Normally, Having good fuel management, plus raising the head is ideal to cope with high engine loads. Maybe I'm wrong.
How long has this kit been street proven??? Any issues yet??? Or are there any revisions in this turbo-kit package???
How long has this kit been street proven??? Any issues yet??? Or are there any revisions in this turbo-kit package???
Originally posted by Y2KevSE
The Vortech 12:1 Fuel Management Unit only provides more fuel. It doesn't lower compression.
The Vortech 12:1 Fuel Management Unit only provides more fuel. It doesn't lower compression.
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Yes!!! That make perfect sence... Running boost over 10psi requires raised head and internals.
Originally posted by speedtrip
As long as you keep the boost reasonable there's no need for a head gasket to lower the compression ratio. But if you want big boost, 10psi or more, than a head gasket would make more sense. So would an engine rebuild and a strenghted transmission! The supercharged guys use the vortech FMU and colder spark plugs with good success in preventing detonation. The vortech fmu is reliable as it's the same one all the supercharged max's are using.
As long as you keep the boost reasonable there's no need for a head gasket to lower the compression ratio. But if you want big boost, 10psi or more, than a head gasket would make more sense. So would an engine rebuild and a strenghted transmission! The supercharged guys use the vortech FMU and colder spark plugs with good success in preventing detonation. The vortech fmu is reliable as it's the same one all the supercharged max's are using.
No one's running over 10psi with that kit, thus no one has bothered to lower the compression, its simply not necessary for how much (or little) boost they are running. Pulling back the timing, colder plugs and correct AF ratios are currently used to stave off detonation at the boost levels currently being run.
Mardi-GRas's latest invention looks real promising
Originally posted by Nealoc187
No one's running over 10psi with that kit, thus no one has bothered to lower the compression, its simply not necessary for how much (or little) boost they are running. Pulling back the timing, colder plugs and correct AF ratios are currently used to stave off detonation at the boost levels currently being run.
No one's running over 10psi with that kit, thus no one has bothered to lower the compression, its simply not necessary for how much (or little) boost they are running. Pulling back the timing, colder plugs and correct AF ratios are currently used to stave off detonation at the boost levels currently being run.
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Okay!!! Well I guess I'm jumping the gun here.. Thought guys were craking over 10 psi's with that kit.. Just curious .. Thanks for the feed-back...
Originally posted by Nealoc187
No one's running over 10psi with that kit, thus no one has bothered to lower the compression, its simply not necessary for how much (or little) boost they are running. Pulling back the timing, colder plugs and correct AF ratios are currently used to stave off detonation at the boost levels currently being run.
No one's running over 10psi with that kit, thus no one has bothered to lower the compression, its simply not necessary for how much (or little) boost they are running. Pulling back the timing, colder plugs and correct AF ratios are currently used to stave off detonation at the boost levels currently being run.
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