has any one using DEK camshafts in 95-99 maxima.
are they better?? what i can excpect from them?? any differance or somethink??

 

VQ35 cams would be better.

 

but it needs extra modifications

 

You are thinking of undertaking the complicated 12 hour (if you're a professional, and I know you're not) install of camshafts that will gain you approximately nothing but you don't want to do the slight extra modification to use camshafts that would actually give you gains? Sweet.

What can you expect? A bunch of work that is likely over your head and no discernable gains.

 

The exhaust cam on the DEK is slightly more aggressive. Not much at all. Not even enough to look up in the eFSM. Either get some JWT cams or get some VQ35 cams or better yet get some aftermarket VQ35 cams.

 

You only need 4 20$ JWT spacers to make VQ35 cams work, for twice the gains.

 

which aftermarket vq35 cams do you want recommened or u think the regular 3.5 cams would do

 

wow did i miss something. what kind of gains can you see with the vq35 cams? and have many others done it?

 

i wanna know that too

 

Instead of using just the 3.5 cams, use the whole dam* 3.5.

 

I agree with this. You're going to end up paying out of your behind just to get the VQ35 cams in there, might as well go the whole ten yards and do the whole swap.

LEMAR

 

And to think that the original poster only wanted DEK cams to begin with ...

 

I know...I love how these sorts of things turn out on the .Org

 

Depending on how the VQ35 intake cam is drilled, it can make a difference.

Running the specs in Dyno2000 with the VQ30 the DEK exhaust cams perform better than any stock Nissan VQ35 cam, except the '01~'02 Pathy VQ35 cams. This is using FSM cam data. The FSM gives the specs of the VQ35 cams with the VTCs shut off and as such the cams (except for the Pathy) are very peaky.

If you feel like you want to go thru the ordeal of changing cams go with some JWT VQ30 ones. But if you want some cheap used cams to waste your time on try DEK exhaust cams all around or '01~'02 VQ35 Pathy cams. They would show some gains, but probally not worth the time.

REMEMBER THIS IS DYNO2000 SOFTWARE SPECULATION, SO IT'S NOT TO BE TAKEN AS 100% FACT

 

The amount of labor to swap out the cams or to just throw the whole 3.5 in there will not be a huge difference.

 

now, wil that be good to boosted car since they need conservative cams and all

 

Not so much conservative cams as conservative overlap. Increased duration and lift will help out FI as long as you don't have excessive overlap and end up blowing air out the exhaust port.

 

Hmm, i was just about to start a thread on this. The only thing is, i have a vq30dek motor sitting in my back yard. look below for pics

Since i have the motor sitting around, and the dek cams are readily available, would this be something worth doing? What kinda gains would i be looking at? from the looks of it, it sounds like its WAY too much trouble to do this for the gains. I figured since i have the dek cams laying around i could try it and see....

thoughts?

 

Wouldnt it be just a camm swap from the VQ30Dek to the vq30, also didnt someone post that you dont have to take the motor out to do cams??

 

You don't have to take the motor out to switch out the cams. The point is that it takes a long time to do it. With the engine out of the car, you can swap out the cams in an hour. In the car....4-8 hours if you know what you're doing, 12 hours if not.

Swapping in DE-K cams are a waste of time and money. 3.5 cams would be much better for the same amount of time and a little more money ($80). Or heck, just swap in the whole 3.5 or DE-K.

 

It makes sense if you can tackle a cam swap might as well do the engine swap. I'm sure the price of getting the cams wouldnt be that far from the whole engine. Especially if you choose to take out the engine to make work shorter. Swap in a new one. . . so I feel.

 

I was debating doing this basically because i have the dek cams laying around doing absolutely nothing....

I know its a huge ordeal to do it, but if the gains are anything over 5hp (wich i would assume not...someone prove me wrong ), i would be willing to test the waters out and give myself a lil project...

 

I'd rather put the 00vi on.

 

to that.

 

Just for reference sake, here is some cam information (originally provided by SR20DEN):


Note: CVTC Off where applicable.


Engine: VQ30DE
Model Years: 1995-1999 (Maxima/ '96+ I30)

Intake__Lift: 8.55mm
Exhaust_Lift: 8.55mm

Intake__Duration: 232º
Exhaust_Duration: 232º

Intake_Opens: 3º BTDC
Intake_Closes: 49º ABDC

Exhaust_Opens: 49º BBDC
Exhaust_Closes: 3º ATDC

Overlap: 6º


-------------------------------------


Engine: VQ30DE (K)
Model Years: 2000-2001 (Maxima/I30)

Intake__Lift: 8.55mm
Exhaust_Lift: 9.0mm

Intake__Duration: 224º
Exhaust_Duration: 232º

Intake_Opens: 3º BTDC
Intake_Closes: 41º ABDC

Exhaust_Opens: 49º BBDC
Exhaust_Closes: 3º ATDC

Overlap: 6º

-------------------------------------


Engine: VQ35DE (1)
Model Years: 2001-2004 (Pathfinder)

Intake__Lift: 9.0mm
Exhaust_Lift: 9.0mm

Intake__Duration: 230º
Exhaust_Duration: 232º

Intake_Opens: 3º ATDC
Intake_Closes: 53º ABDC

Exhaust_Opens: 46º BBDC
Exhaust_Closes: 6º ATDC

Overlap: 3º

-------------------------------------


Engine: VQ35DE (2)
Model Years: 2002-2005 (Maxima, and a slew of others)
CVTC: Intake

Intake__Lift: 9.5mm
Exhaust_Lift: 9.5mm

Intake__Duration: 238º
Exhaust_Duration: 240º

Intake_Opens: 6º ATDC
Intake_Closes: 64º ABDC

Exhaust_Opens: 52º BBDC
Exhaust_Closes: 8º ATDC

Overlap: 2º

-------------------------------------


Engine: VQ35DE (3)
Model Years: 2005 (G35 Coupe, 35th Anniversary 350Z)
CVTC: Intake and Exhaust

Intake__Lift: 10.5mm
Exhaust_Lift: 10.5mm

Intake__Duration: 248º
Exhaust_Duration: 248º

Intake_Opens: 2º ATDC
Intake_Closes: 70º ABDC

Exhaust_Opens: 70º BBDC
Exhaust_Closes: 2º BTDC

Overlap: -4º

 

Not too good with all that technical stuff. But im trying to read up on this $hit lol.

Basically the gains would be VERY minimal. The differences dont really seam that large at all...

 

wow those 05 rev cams look very nice .

 

Ok so basically you guys say you can put the vq35 camshaft into a VQ30DE engine, with just 4 20$ JWT spacers.
I'm asking this because I went to a Nissan dealership and asked if I can put the camshaft from the 350Z (the VQ35) and they said no .

 

ya that made it sound so easy... is it really just that simple? replacing them with spacers to fit?? cause that would be pretty sick... what would you need for tuning when you change cam timing? i've got a vafc 2 with my 00vi

 

That sounds sick.

 

It's a PITA and not worth it. It's a total waste of time. 02-03 350z cams aren't that much better than DE cams. If you want decent cams, you get Rev-up cams. If you want good you go with aftermarket cams.

Cams do NOT affect the air/fuel ratio. There is no A/F tuning for cams. But tuning with a EU, you can safely advance your ignition timing more than you could with stock cams, giving you more power.

 

If you go to a nissan dealer and ask if you can put a 3.5L into a 3rd, 4th, or 5.0gen, they'll say no. Ditto if you ask if you can put a 6 speed into a 4th gen.

It won't work without modification. Nissan dealers don't do custom modification. They do what the factory service manual tells them to do.

 

Do you have some recommendations on Rev-Up cams or aftermarket good/decent ones.
I would appreciate that.

 

Rev-up cams are 05-06 350z/G35 stock cams. You can get them pretty cheap off ebay or from 350z and G35 forums, like $100-200.

There's plenty of good aftermarket cams-JWT, Brian Crower, Tomei, Nismo. They're not cheap though ($1000-1200) because you're actually buying 4 cams, not 1 like you would with a small block.

Which cam you select depends on your goals.

IMAO, if you can't do the work yourself, it's not worth it. It's just too much money. You're probably looking at $1000 or more for labor to install these. Same for custom engine and tranny swaps/work.

 

Thanks a lot.
I won't do the work myself. I have a mechanic friend who will help me. Or better he is going to install them when I do the engine overhaul.

 

are these cams good for boost or N/A? what about the HR cams?

 

One more question. For the Rev Up cams I will need a rev up oil pump , but I cannot find one for the VQ30DE and I do not know if the VQ35DE one fits.
Every mentioning of the Rev up pump is related to 3.5 swaps.
If anyone has an idea where I can buy one or if the 3.5 rev up pump fits my 3.0. Water pump also.
Some links or pointers will be highly appreciated
Thanks.

 

......umm because the oil pumps are exactly the same. There is no 3.0 modified rev-up oil pump its just the rev up oil pump. And who says you need a rev-up oil pump to run rev up cams? That must be an unwritten rule i didnt hear about.

 

I searched the forum for other guys who used rev up cams and all of them used rev up oil pumps. There is a thread comparing the Vq35de pump I think it's stock and the rev up oil pump. So I thought I will have to use one when I will put in the rev up cams.
I do not mind putting in a rev up pump , but I don't know if the VQ35 pump has the same dimensions as the Vq30 one. If it has them it's perfect.
Can anybody set me straight on this one.

 

They all fit just the same. If you were contemplating on reving your 3.0 with rev-up or aftermarket cams past 7000 rpm it might bring you some peace of mind, otherwise it is not needed.