Cams & Other stuff..

[Canadian]

I'm starting to piece together parts for a motor build, and cams are something I'm stuck on. Can I get some advice? Since I'm 5AT and on the JWT 530bb kit I know I'm not going to make big power, and I'm looking for the best cam for my application. I was looking at the BC 264 cam, it seems to have good results. I was also looking at the Cosworth 270 cam, and I was told by my local mechanic that my 5AT may have a rough idle with anything bigger than that - does this makes sense?

So far I'm probably going with 8.5:1 Cp pistons and eagle rods with a haltech.

I don't have a huge budget as I'm looking to do just a simple build, nothing crazy. Will probably go with HR headstuds and head gasket. Any recommendations on my rod/piston selection or anything else? I'm still learning about internal parts, so I'm trying to gather what info I can.

[TTG35forT]

Check out this thread:

http://my350z.com/forum/forced-induc...treet-car.html

I have a preference for Wiseco pistons, and they thend to be the most econimical. They are made with 2618 aluminum, which may be overkill. For a light to moderate build, 4032 pistons should be sufficient. But then again, other than Mahle, I don't know who makes 4032 pistons for our car. I'm not sure whether going with 4032 Mahle's will save you any money.

The thread I posted the link to describes the difference between the 2618 and 4032 alloys when it comes to pistons.

At any rate, any combination of Eagle, GTM, Carillo or Pauter rods with Wiseco, CP, or Arias pistons will be fine. I have not heard much about the Mahle pistons, but those might be fine too. Also, as the thread notes, the 4032 allow should have some benefits for a mild mannered street car.

BC2 are good cams and well proven. You can just use those and call it done, or you also can take a look at JWT and GTM cams. The JWT "S" series cams can be used with stock valve springs, but not the "C" series.

Apparently, the HR head bolts should be good to about 650 whp. Madscientist experienced head lift using them with the HR headgasket around 680 whp. It was his opinion that the issue was the rod bolts, not the head gasket. I have not heard of any other issues with the HR head gasket. Cass007 on the My350Z forum is using them in a mid 600 hp build with no problems. Also, GTM and JWT both recommend the HR head gasket, and GTM is using them on a 1,000 whp build that is underway.

[Canadian]

Thanks for the help. I'm going to go with CP 8.5:1 and Eagle.

Can I get someone opinion on injector sizes for 500whp? Would DW 600cc's be big enough?

So far my parts list consists of:

ARP Main Studs
ARP Connecting Rod Bolt Kit
BC Stage 2 Cams
BC Valve Springs
CP Pistons
Eagle Connecting Rods
VQ35HR Headstuds
VQ35HR Headgasket
Rev-Up Oil Pump
Water Pump
VQ35 Patherfinder Cooling Kit
ACL Rod Bearings
ACL Main Bearings
ACL Thrust Washers
Haltech ECU
Walboro 255lph Fuel Pump
AAM Stage 1 Return Fuel System
Deatschwerks 600cc Injectors

I got some of the parts from Glex25's parts list, hope you don't mind.

Am I missing anything here?

[Glex25]

Everything looks good 600cc injectors is good for 500whp.

You don't need the ARP Con rod bolt kit since the eagles comes with them already.
I canceled my order on those

But if you want 600cc let me know I'm upgrading my DW 600cc and getting 1000c HKS.
They have less than 10 miles on them since my car has been in the bodyshop and
has only been run when I was tuning the car.

[Canadian]

Thanks. When will you be selling them? You can PM me the info if you want.

[TTG35forT]

You may want to think about a Motordyne 5/16", AAM 5/16" or other equivalent pleum spacer. That will certainly make getting hp easier.

Ceramic coating the exhaust manifolds, turbine housings and downpipes will help keep your engine bay significantly cooler. (It will also very slightly improve turbo spoolup, but the improvement probably won't be noticable).

You should probably get 1 step colder spark plugs.

I would also suggest an oil cooler.

[seymore4]

How much whp is the 530 kit good for?

I just paid the deposit on my motor build too :P

CP pistons
carrillo rods
cosworth bearings
hks head gasket
arp head studs
CJM dual fuel pump assembly & return fuel system
1000cc injectors

I've got a Rev-up so we're leaving the heads/cams alone

...fun fun fun

[Canadian]

Originally Posted by TTG35forT

You may want to think about a Motordyne 5/16", AAM 5/16" or other equivalent pleum spacer. That will certainly make getting hp easier.

Ceramic coating the exhaust manifolds, turbine housings and downpipes will help keep your engine bay significantly cooler. (It will also very slightly improve turbo spoolup, but the improvement probably won't be noticable).

You should probably get 1 step colder spark plugs.

I would also suggest an oil cooler.

Yeah, I will get the motordyne 5/16 spacer. I already have basically ever cooling mod I can do (thermostat, koyo radiator, etc.) including an oil cooler. I will be running 1 step colder plugs as well, as that is what I have right now. I'm going to be buying stuff over the next few months, and I hope to have everything ready by next summer. I need my car for school and I don't have a month of downtime between now and then. Once I have everything ready hopefully I'll start the build.

[Canadian]

Originally Posted by seymore4

How much whp is the 530 kit good for?

I just paid the deposit on my motor build too :P

CP pistons
carrillo rods
cosworth bearings
hks head gasket
arp head studs
CJM dual fuel pump assembly & return fuel system
1000cc injectors

I've got a Rev-up so we're leaving the heads/cams alone

...fun fun fun

Who is doing your work? I'm on SS box right now so I need to upgrade to a new ECU, thats going to take a huge chunk of the build. The 530s are good for high 400s I believe. There is a local guy in Vegas running 430whp with cams on the 530s at 8lbs of boost. I was overboosting earlier this year and the car saw upwards of 13psi and DAMN it felt fast. So if I can run 13psi safely I'll be happy.

[seymore4]

Intec Racing in Kent WA. Lawrence Ojas (the owner) has a lot of experience tuning TT vq35de's with Osiris, and seems to think we shouldn't have a problem breaking 500. I guess the 530bb kit is good for around 12 psi? we made 403 whp @ 7psi, and with a built motor you can pull a lot more timing so we should make some good power once we get it back together.

Lawrence tuned a couple TT 350z's on the east coast and made around 650 whp with stock rev-up cams and heads so I'm leaving mine the way it is.

And DEFINITELY invest in a new EMS. I'm running Osiris, but everybody has their own opinion as to what's best.

[str8dum1]

^ wait you bought all that stuff to use on a 530bb kit?

[seymore4]

No, I bought the 530bb kit first and then ended up building my motor.
I'll probably end up upgrading the turbos next winter.

Go big or go home, right?

[str8dum1]

i dunno, there's 'go big' and there's 'waste money'

well at least max out what you have 1st since you bought parts for a 800 hp build. 20 psi!

[Canadian]

Can I get someones opinions on AAM's fuel return stage 1 kit vs. the CJM in my list? I can get the AAM cheaper so I'm looking at that instead.

[seymore4]

We will definitely max it out I'll post up dyno sheets when it gets done