Ok sorry if this is a repeat but through searching through the all the cam threads i could find i couldnt find any tips on installing the 3.5 cams into the vq30de-k. I was wondering if it is better to pull the motor or just pull the heads? I would appreciate all the help from those that have done this. I am currently waiting on the cam adapters. Thanks for all the help guys

 

what do you need cam adapters for? the 3.5 cams arent just plug and play in the dek? wondering because I have plans for this as well. what mods are you running with these cams?

 

in order for the 3.5 cams to work in the 3.0, you either need to get your cams drilled or get cam adaptors. cam adaptors seems like the more rational choice. It doesn't involve you getting your cam drills and is about the same price as getting your cams drilled.

 

You don't have to pull the motor or the heads. Are you sure you're familiar enough with the process to tackle this yourself? Just wondering...

 

Well im waiting for the adapters to come in and then i might attempt to do this. I have never pulled the cams on a vq but i have minor automotive experience. This is why i made this thread so that those guys that have done this could help me out. All help will be appreciated greatly. Also has anyone dynoed this mod?

 

The process of how to remove and install cams in a VQ is documented in the Haynes manual. The only difference when installing the 3.5 cams is that you're going to have to install the spacer/adapters.

 

you dont need to pull the heads or engine because the cams are mounted on top of the head and only require disconnecting timing equipment to get to them...i think.

 

Ahh kool i gotta find that thing first, lol. Thanks alot for the help keep it comeing. Also do you guys recommend getting a safc2 or anything else to help with the air to fuel ratio. I was thinking of maybe running a zex wet kit with this. Ofcourse upgrade the fuel pump and all but thats for next year. Do you think i should dyno tune after installing the headers? Also i have my timeing advanced would that be a problem with the cams?

 

I am looking a getting some 3.5 altima cams, the are the same as the maxima 3.5 cams right? I know, same vq35de but just making sure! also I was thinking about getting jwt valve springs to match with the 3.5 cams in my de-k. Is that a good choice? I know stephenmax makes adapters, do I just tell him I need 3.5 cam adapters for a de-k?

 

All VQ35 cams are the same except the RevUp (7000 rev limit), 01-04 Pathfinder, and the VQ35HR.

You need to space/drill or adapt all VQ35 cams to use with VQ30 timing equipment.

To change the cams you need to take off the timing chain cover, lower oil pan, timing chain system, valve covers, and Intake manifold. You then have to check a lot of clearances and make sure you don't mess anything up in the process. If you don't have a lot of VQ experience I wouldn't recommend doing it yourself.

 

are the 01-04 pathfinder cams or revup cams somemthing we might want to look into? I know we probably dont know much about the vq35hr yet, but anyone know how those may work?

 

wha about the jdm cams on ebay? Anyone dyno those yet? How r those compared to 3.5 altima or 350z cams in terms of performance?

 

The Rev Up ones are more aggressive, so you might want to look into those.

The Pathfinder are less agressive, somewhat more rare, and I am not sure how the spacer/drill applies. They could be direct swap or they could need a different spacer.

 

With the adapters i am getting i was told that i do not need to drill the cams. What i was wondering is would their be a timeing problem with running these cams?

 

JWT knockoffs > rev up cams.

 

Thanks Nismo, I purchased those of ebay. I cant wait until somone actually gets sum dyno, 1/4 mile runs and charts.

 

are the rev up cams the same as the 350z cams? so basically jwt knockoffs on ebay > revup > 3.5max and altima cams? which are > than de-k > de?

I am wondering if I need to change valve springs with the 3.5 cams in my de-k? use the dek valve springs? or 3.5 springs? or jwt springs? or 350z springs?

also, will the 3.5 heads bolt up to the 3.0 de-k? would I want to do this?

 

help........

 

Rev up cams are only found in the Z33 track edition w/ 300 hp as well as the G35C w/ the same hp.

Try reading the sticky in this forum that has this information


http://forums.maxima.org/showthread.php?t=299441
http://forums.maxima.org/showthread.php?t=414267

 

The highest whp VQ35 4th gen sports these cams. That says enough. Search on altimas.net also. Thats where you will find the dyno.

Mike

 

so 3.5 cams with 3.0 heads and 3.0 springs. what is this set up like?

 

Dude please try to keep your questions concise. It's seriously aggravating to have to answer like 101293823 different questions in one post.

The DE-K valve springs will be fine.
Yes. No.

 

alright. sorry. thanks.

 

. .

 

What about just running the intake cams? Heard theirs problem with the exhaust cam timeing or some sh like that

 

Not worth the time/effort

 

well is there a problem with running all 4 cams with adapters? timing wise like he said on the exhaust cams?

 

No.

10beans

 

For an extra reference to this thread, a possible setup which "has been done" onto my car is this:

03 maxima block
03 maxima crank
02 pathy crankcase
02 pathy heads
02 pathy pistons-flat top
ARP crankcase bolts
ARP rodbolts
JWT 3.5 valvesprings
JWT 3.0 camshafts (no cam drilling, nor adapters are needed)
4th gen's mevi iintake manifold
4th gen's Cattman Full exhaust
02 pathy throttle body
still got lots more into it, EU, Wideband, Fuelpump, FPR,...

 

because taking in more than you can get out is bad, you might end up with the burnt mixture being stuck in the cylinder after the exhaust stoke, meaning the air coming in might not leave after burning.

 

Ok so from what i gather im gonna need an wideband o2 sensor plus either safc2 or vafc2. The reason for the vafc2 was i was wondering about maybe opening the vias sooner or maybe later? What you guys think