Tomei's 268: ok with stock engine?
 

Are the tomei 268 cams ok to be installed in a stock engine, or are forged internals, stronger valve springs, etc... need to be installed?

You should get Ti retainers and stronger valve springs. I think you will need heavy duty lifters as well. go to www.sgpracing.com and call Kyle. He can get you everything you need.

We had a brief discussion about these...

Stock internals should be fine for these cams. These aren't "insanely wild". If you plans on raising the redline, forged internals would be a smart idea.

No need for "heavy duty" lifters.

Nissan has the entire array of lifters available - you tell them what you need and they send them.

Dude, the 268's make power up high. They will shift the powerband into a higher RPM range. Do it right and get heavy duty everything if you want to play with the power in the 5K-7K range. A TS ECU will put you up there and allow you to better access the range as well. When you replace cams, especially with 268 or 272 and up, you may as well build the valvetrain to take some power and RPMs. You are already there. It is better than having a part fail and destroy 10 other parts around it.

edit!!! I just want to clarify that I am not saying you need FORGED internals such as rods and pistons for chrissakes. I am saying VALVETRAIN parts for anyone who might PM as unclear.:)

FLY BY Z
 

Any suggestions on valves! Last month during my engine rebuild there were no aftermarket valves available so to save time I went with stock! My mistake!!!!!

Re: FLY BY Z
 

Mjedens, this is one reason why I have not begun to build my motor yet!:) I am waiting until everything is available and proven. I'm no pioneer!:p I was hoping to watch you and learn. All I would suggest is asking some of the valve companies (manley, etc.) if they could replicate a stock valve if you sent them one and if they could forge it or make a strong one however they feel necessary.. Good luck!

Install time?
 

What is the typical install time for a set of cams?

Install Time
 

Ricochet - I've heard that the average is 8 - 10 hours. R U going with the 268 cams? I'm leaning toward the 264's myself. Everyone keeps telling me that the 268's don't come on until over 4k rpms. I'd like a little more midrange power so I'm looking at a step below the 268's. Good luck with the install!

Gene

Aww man! 4K comes pretty fast when you put your foot in it! Besides, more power below 4K just makes it easier to spin the tires. Anyways, good luck with the cams, I can't wait for mine, but I am.:)

Ferrera valves are real good, you can get them made for our car if they don't have any. I think I spelled it right.

I'm heavily considering the 268 cams.

Here's another question, are the cams ok to install now if I choose to go FI down the road later?

I don't have an unlimited budget. So I'm only looking into cams + install.

If I'm looking to install cams only, should I just go with the Nismos since they've been tested to run fine with the stock engine?

I would base it more off of where you want the power to be. Down low and more torquey or high RPM HP or something in between. The Tomeis are cheaper than the NISMOs and they have 256, 264, and 268s. I believe the NISMOs are 262s. So if you want a very streetable cam then the Tomei 256s will be nice and mild, provide an increase in power down low to mid range and be cheaper than the NISMOs. If you want the middle of the road the 264s should be ok but MAY need ECU tuning but could probably get by with what the dealer can do to it. The 268s will def. need Technosquare or an equivalent. Enjoy the cams and keep us updated!

What is the duration of the stock cams?

Intake 238, exhaust 240, both 9.20mm lift, according to Tomei's website

Have you guys consider JWT CAMS for the Z? Performance Nissan has them now for $1100.

what is the WHP of the Tomei 264 vs Nismo 262?

with this cams can I only change the cams... everything else can be stock?

Thanks!