JWT camshaft for the Maxy.

[PBfrEAk]

I'm just trying to run different ideas to see what I want to do.

I have the turbo idea pinned down as far as what needs down, how much it will cost, how much time it will take and where I can find most of the parts.

Ideally if I end up going the turbo route I'd like to rebuild a separate VG and then just swap the whole thing into my Max.

I was also thinking of keeping it NA for now and just doing a few things. Thats when I stumbled upon the camshafts available through JWT.

This may be a N00B question but oh well. Realistically how much gain will I see from getting this camshaft?? And as far as install, is this something I can do at home?? I'm sure its recommended to rebuild the whole top end while I'm in there...but say I just wanted to swap in the new camshaft...hard??

I'm fairly competent with engines, and along side my father and uncle, we might as well be pro mechanics (you get what I mean).

Thanks for the info.
Modified by PBfrEAk at 11:19 AM 1/20/2008

[PBfrEAk]

Any one have any input??

[mtcookson]

Sorry about the delay, I was going to respond and completely forgot somehow.

As far as power, cams are said to be one of the best mods for an NA VG30E... but I've never seen any dyno proof. I have no doubts you will see a good increase in power, I just don't know how much you'll see.

As far as changing them... you probably won't be able to change the cams while the engine is in the car. At the very least, you would have to tilt the engine up enough to slide the cams in and out.

If you're planning on doing some tuning while you're at it and moreso bumping the redline to get even more out of the cams, I'd recommend getting JWT's valve springs while you're in there. I believe they're a slight upgrade over stock and should be able to support the 7,000 rpm redline that the VG's are generally set to (JWT does this with their ECU mod).

[PBfrEAk]

Ok so if I did do the cam's I would have to get my ECU redone then??

I figured I would upgrade the valve springs. I also wonder if you know how big is too "big" as far as duration.

I was figuring on going with the 270's...their the stage II cams from the Z store. They are on there for the 87-89 300zx but I think they will work in my car as well because as far as I know that is the W style block.

Thanks for the input...I've just been going back and forth on whether to sell or keep my car...I'm still on the fence...but this is tempting me a little more...

[mtcookson]

You wouldn't have to at all... but if you did that will only maximize your gains and performance.

The stage 2 cams should still work great on an NA VG. I've not studied the whole science of cams yet but I believe they're just doing an all around cam that will work good in both NA and turbo applications.

[PBfrEAk]

Alright...well thanks for the info...definitely cleared some things up a bit.

Awesome!!

[FoxFire]

you MIGHT get 200 crank with a cam, intake, without porting or headersyou might get 230 with an aggressive angle/porting job and header with a cam

You have to get n/a cams for n/a performance, if you get n/a cams and later turbo it, it wont work out very well with the bigger overlap

for easy power go with a nitrous systemyou could get around 275-300 with nitrous without a cam

Cam and head work from redz31 http://www.redz31.com/pages/headwork.html#cams

[PBfrEAk]

you MIGHT get 200 crank with a cam, intake, without porting or headersyou might get 230 with an aggressive angle/porting job and header with a cam

You have to get n/a cams for n/a performance, if you get n/a cams and later turbo it, it wont work out very well with the bigger overlap

for easy power go with a nitrous systemyou could get around 275-300 with nitrous without a cam

Ok thats what I was figuring was 200 crank with just cam and intake/exhaust.

Now the question I have is if I get turbo cams now but don't turbo it right away...would that cause problems other than the fact that I won't be using them to their full potential?? Or will I have problems with it running??

As for the Nitrous yes that is a route I considered but like you said thats "easy" power. I may be a poor college student but I'm a poor college student who's not a fan of nitrous. Haha!!

[FoxFire]

The exhaust manifold pressure will be reversing into the combustion chamber while the exhaust valve is still open.

The exhaust manfiold is more pressureized then the intake on most turbo applications. so you want a very low overlap, higher lift cam for turbo.

explains alot About cam selectionhttp://www.mx6.com/forums/1g-f....html

go withSchneider Racing Cams270-62H

as for nitrous its about 1000 $ for a good system (cheaper used)even if you got on it everytime you drive it, every day, a 75 shot will last a month with 25$ worth (10lbs)

i got a friend running a 50shot on his honda, hes had a 5lb bottle for 3 months now.

[mtcookson]

I would actually avoid Schneider cams. They have been having major quality control issues from what I've seen (specs aren't what they're supposed to be).

You may look into going with Isky, they can do a custom grind and can put together a set of cams that should work for what you want. I haven't heard anything bad about them yet.

[PBfrEAk]

The exhaust manifold pressure will be reversing into the combustion chamber while the exhaust valve is still open.

The exhaust manfiold is more pressureized then the intake on most turbo applications. so you want a very low overlap, higher lift cam for turbo.

explains alot About cam selectionhttp://www.mx6.com/forums/1g-f....html

go withSchneider Racing Cams270-62H

as for nitrous its about 1000 $ for a good system (cheaper used)even if you got on it everytime you drive it, every day, a 75 shot will last a month with 25$ worth (10lbs)

i got a friend running a 50shot on his honda, hes had a 5lb bottle for 3 months now.

Thanks for the info on the cams...but according to mtcookson,

I would actually avoid Schneider cams. They have been having major quality control issues from what I've seen (specs aren't what they're supposed to be).

You may look into going with Isky, they can do a custom grind and can put together a set of cams that should work for what you want. I haven't heard anything bad about them yet.

maybe Isky will be a better choice...I'll have to do more research...

As for the nitrous...like I said...I may be a poor college student (meaning the best choice budget wise for quick hp with the least amount of money MAY be NO2) BUT I'm a poor college student who doesn't like nos.

I'm not saying its cheating or a cop out. Its a legitimate power getter but it just doesn't suit me. I don't want my power only when I push a button or only when my bottle is full.

I want power anytime my GAS tank is full. It may cost me more money but that just means it will take me more time to get it done!!

[Dattebayo]

Many many years ago, I remember reading something about that you could take the rocker arms off another vehicle and use them in a VG for added performance as well. These were stock rockers off a different car, and were supposed to be lighter or something like that. Any truth to that or am I just mad in the skull?

[mtcookson]

I've not heard of that before but I'll ask around and see what I can find out.

[Dattebayo]

Hey, thanks. I'll have a look over at Z31.com and see what they say about it.

[mtcookson]

Definitely let me know if you find something on it, that would be some great info.

[Dattebayo]

Nothing as of yet, but can you tell me if the Maxima rockers are any lighter weight then the 300Z rockers, and also if the turbo rockers are beefier than the non-turbo ones? This maybe what I was after now that I have had time to think about it...

[mtcookson]

I've not noticed any differences between all of the ones I have. I can double check but I'm pretty confident they're all the same.

[Dattebayo]

Argh! I hate it when I can't remember stuff from 10 years ago! I can remember crap like which bolt heads are what size on the VG but not what rocker you can use to free up some power?!? Useless!

And BTW, z31.com is where I originally got the info from, but their archives are NOT what they used to be. I hate the internet.

[mtcookson]

Looked around myself and couldn't find anything. I did see that they use the same rockers in the RB30E... but that doesn't help much. They are aluminum stock though, if I remember correctly, so really I don't see too many gains there.

Pretty much the best way to get gains in that area would be solid, roller lifters. The rollers would help reduce friction and the solid lifters would allow you to use a much more extreme cam profile.

You could probably make the rockers a little more lightweight for some extra power but they would definitely be custom.