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R34 Rb25 Neo Valvesprings And Hardware?

BlackBox

By BlackBox,
in Engines & Forced Induction

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Dose Pipe Sutututu
Dose Pipe Sutututu

lunacy to toss the VCT, each to their own

Mick_o
Mick_o

DUMB.....

Piggaz
Piggaz

PSI is VERY relevant.I can't see how power can make any difference seeing that both valves are shut when it goes "bang". Boost pushing against the intake valve is a big contributing factor in float.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

I've got a set installed on a motor I'm slapping together as well.

85lb seat pressure with titanium retainers because I was upsold by my mate LOL.

Will spin the motor to 9k RPM, will have a balanced crank and Spool Import billet oil pump gears along with matching pump collar.

Funny part is, will be on stock rods, stock pistons with ACL Race conrod bearings.

#wishmeluck

  • Like 1
GTSBoy Grand Master

GTSBoy

Posted
Posted
2 hours ago, Dose Pipe Sutututu said:

I've got a set installed on a motor I'm slapping together as well.

85lb seat pressure with titanium retainers because I was upsold by my mate LOL.

Will spin the motor to 9k RPM, will have a balanced crank and Spool Import billet oil pump gears along with matching pump collar.

Funny part is, will be on stock rods, stock pistons with ACL Race conrod bearings.

#wishmeluck

Titanium retainers are a very very good idea.  I recently juggled a set of Performance's normal retainers and the stock Nissan ones.  The Performance ones are massive.  Easily three times as thick and heavy as the stockers.  I wouldn't do that to my engine.  The Ti ones would be an easy upsell.

CHRIS MW33 Apprentice

CHRIS MW33

Posted
Posted
7 hours ago, Dose Pipe Sutututu said:

I've got a set installed on a motor I'm slapping together as well.

85lb seat pressure with titanium retainers because I was upsold by my mate LOL.

Will spin the motor to 9k RPM, will have a balanced crank and Spool Import billet oil pump gears along with matching pump collar.

Funny part is, will be on stock rods, stock pistons with ACL Race conrod bearings.

#wishmeluck

good luck buddy, cams and turbo in the works?

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
2 hours ago, CHRIS MW33 said:

good luck buddy, cams and turbo in the works?

I have basic Tomei 260º/ 9.15mm cams going in with a Hypergear 45SAT (ceramic BB version) going on. Should make a modest 400~420kW at the wheels.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Don't give up VCT, worse thing to do. GTR owners are paying thousands to retrofit them to their RB26 motors.

Purpose of the car: track work, drift, might dabble in roll racing too. 

Goal: 4k of usable RPM.

CHRIS MW33 Apprentice

CHRIS MW33

Posted
Posted

i see drag only in mind and daily driver. i will not operate in the vct region most of the time therefore why bother retain the vct? vct shuts off at about 4700rpm. i will be in 5+k

 

revving to 9-9.5k should give me about 4k usable range as well

 

 

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
12 minutes ago, CHRIS MW33 said:

i see drag only in mind and daily driver. i will not operate in the vct region most of the time therefore why bother retain the vct? vct shuts off at about 4700rpm. i will be in 5+k

 

revving to 9-9.5k should give me about 4k usable range as well

 

 

You can control the VCT cut off point and also VCT will assist your turbo spooling. Furthermore it's a street car youll need that low down to move around traffic.

Worse idea ever removing VCT. If you want brappy cams that support VCT look at Camtech cams.

CHRIS MW33 Apprentice

CHRIS MW33

Posted
Posted
Just now, Dose Pipe Sutututu said:

You can control the VCT cut off point and also VCT will assist your turbo spooling. Furthermore it's a street car youll need that low down to move around traffic.

Worse idea ever removing VCT. If you want brappy cams that support VCT look at Camtech cams.

car will start on launch control at 4.5k rpm i dont drive car around in traffic. and camtech cams are at twice the price.

 

seems better to toss the vct and go larger cams.

 

Mick_o Grand Master

Mick_o

Posted
Posted
3 hours ago, CHRIS MW33 said:

car will start on launch control at 4.5k rpm i dont drive car around in traffic. and camtech cams are at twice the price.

 

seems better to toss the vct and go larger cams.

 

DUMB.....

  • Like 2
CHRIS MW33 Apprentice

CHRIS MW33

Posted
Posted
42 minutes ago, Dose Pipe Sutututu said:

You give a man a hammer everything looks like a nail.

I have had it on and off on my current engine....i see no major gains. Maybe it's not working blocked or something.  Systems aged she's and fail over time as well. I will revisit it later as changed won't be made immediately

CHRIS MW33 Apprentice

CHRIS MW33

Posted
Posted
1 hour ago, admS15 said:


The man has a point but your welcome to ignore the advice and remove a fantastic engine feature coz racecar.

Also think about Wat was said.... I Drag Race and I never operate in the vct range fantastic or not it is useless if the engine nerves sees the vct. Launch control is 4500rpm weeks vct turns off at 4700 therefore I see 200rpm of vct then I stay above 5k rpm between shifts. Car is not a track car. Vct makes no sense to my setup.

 

Larger cams would be more useful since I will be operating in the 5k plus region 

We are not here to all have like minds. We will all have different ideas and minds at some point. 

but u should consider another possibility 

admS15 Grand Master

admS15

Posted
Posted
Also think about Wat was said.... I Drag Race and I never operate in the vct range fantastic or not it is useless if the engine nerves sees the vct. Launch control is 4500rpm weeks vct turns off at 4700 therefore I see 200rpm of vct then I stay above 5k rpm between shifts. Car is not a track car. Vct makes no sense to my setup.
 
Larger cams would be more useful since I will be operating in the 5k plus region 
We are not here to all have like minds. We will all have different ideas and minds at some point. 
but u should consider another possibility 

Dude you said on the previous page drag only and daily. Wtf. So if you intend on driving it at all on the road you would be a fool to remove vct. Clearly u have your mind made up. Good luck to you but my crystal ball says that you'll look back in the future and think those guys where right. So, will this thing be driven on the street or not? That should be what your decision is based around. Also vct will not hurt performance on the drag strip.

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