Bought a drone yesterday and going to do some cool photos and video's soon...

Just an update and I started a thread regarding this but it was closed shortly after. I have been trying to purchase another drivers side exhaust manifold since mine cracked and after talking to todd at vivid racing he was sure sam at gtm could fulfill that order. Paid half up front and waited 6 weeks because sam told tod at vivid that a new batch of manifolds were due in the end of February. Again this is not bashing gtm in any way but I just wanted to let people know that I tried to place an order through another company to get a part from gtm for my existing turbo kit. To make a long story short, I had to request a refund due to gtm not being able to fulfill the order. Todd at vivid racing is a great guy and did everything he told he was going to do if gtm did not come through so again I'm needing another exhaust manifold.... I know I can have my existing one welded but would prefer a new one just for peace of mind. My new motor now has almost 3k miles and smooth as butter..

Well.... don't worry. They are working hard to right things over there.

How's the drone vids coming along?

Actually I crashed it today because I just had to fly it in the agility mode. Luckily I only broken one of the legs on the landing gear.. If you get one I can't say enough great things about the 350 qx3..

I feel you on this topic as i also had cracked manifolds and tried to purchase replacement with no luck so i just had to have them welded and coated. The welder i use did a great job and put extra metal in the areas where they were crack. They came out good and i just hope they hold up.

COSMO, gonna use your thread since I don't feel like opening up a new one. I've not caught up much.

Are you still sticking to the GT28RS turbos? I'm thinking in the future if I were to build up my motor I'd like to switch out the turbos for the GTX variety. Of course, that'll require a new manifold to the turbo. I rather not dump another $8-10k on a turbo kit and re-use and retrofit stuff. I'm pretty sure the existing manifolds would be useless by the time I decide to drop the motor and get new turbos. What do you think?

cosmo, in regards to you needing a new manifold have you seen this >
370Z Twin Turbo manifold - interest thread - DIY turbo kit - MY350Z.COM Forums

@jaytirbhaw, we definitely need someone who can fab us some manifolds to fit Garret turbos, and then have a shop retrofit the pipes to our existing kits. I'm sure it'll be cheaper than dumping money on a brand new kit. Plus, be able to install external wastegates.

I may upgrade to the 2871 or 2876 depending what will fit down there..

Garrett GT2876R Turbocharger

Jon @ Z1 suggested the same thing when I do built block. With the GTX swap they made 609whp @ 9 PSI with the stage II piping, GTX swap.

O rly? :)
https://cms-sites-media.s3.amazonaws...lag_2_meme.jpg

So I guess we're all in the same boat about the manifold. I'd definitely look into upgrading to the GTX turbos when the motor decides to quit, but I'm going to run the stock block and Stage II turbos for as long as I can. There's no point rebuilding the GT28RS once it's off the car.

Don't blame you. Nice whip btw glad your keeping it.

Stock block with our TT kit and fuel return is 550whp on 93 octane all day.

May even keep my GT28RS if I do built block haven't decided. Yes the turbos would be maxed at 15ish PSI, but only driving her 4 to 5 hours a week isn't much abuse.

Different is the GTX's would complement the power curve for better pulls and obtain 50 to 60ish more whp compared to the GT28RS.

but

You have ask yourself, is it worth the extra $1600 for the swap?

When it is time to drop the motor for a build, the manifolds will need to be replaced as well. At this point, I would have to decide whether to rebuild the turbo or get a new pair of GTX turbos.

You have a lot miles on your kit. GTX all the way and just sell the 28RS.

Well after finally having time to tear down my car again it seems my cracked manifold is much worse than I thought and come to find out there are now 2 cracks... Pics will be up soon.. Thank you GTM..

Holy crackhead! !

YzGyz

What are your symptoms? I'm about to do a smoke test in the next month or two.

I read about Paige Baker's blue Z, and supposedly the destruction of her engine was caused by the cracked exhaust manifold. It sat for 2 years, and now it's a built beast like yours.

Well for starters I noticed a rich condition on bank 2. At first it wasn't that bad but now my plugs are fouled and you could hear an exhaust leak. I'm now trying to decide what to do next if I should possibly put a stock motor back in and sell the car or design my own turbo kit using a 6466 precision turbo.. Much time and money wasted kinda puts a bad taste in your mouth when even thinking about going with another turbo kit.. :icon14::shakes head:

After talking with Charles and cjm, it appears the greddy manifolds have the same issue. So now I have a built motor and awesome fuel return system with No boost... lol

Gtm tt kit - crack manifold - MY350Z.COM Forums

Not sure if the GTM manifolds are the same for DE/HR/VHR like I read the Greddys are, but this might be worth looking into.

Somebody has got to be able to make a set of GTM replicas here in the States. I bet there are a lot of Z/Gs with this same problem.

This is an inherent issue with Cast iron manifolds... Sucks bro...

Hey thanks for the help but at this point I really don't know if I want anything gtm on my car. I'm looking at a set of oem exhaust manifolds on ebay and use that instead of anymore cast..

I don't think anyone with a 370z has done a precision 6466 T4 with a 3" charge pipe on a built motor.

IMO, the route I'd like to take is to figure out how to retrofit a new pair of snails and manifolds to the existing kit. It's fine the way it is besides a few improvements here and there. It might be cheaper and less time consuming, and the result is still a nicely boosted car.

Other route is to part the entire kit and switch over to F.I. TT kit. That would be my other option if all else fails. I can't fund any of this unless I sell the house and live in a small box - not a problem since I'm still single with no kids haha.

It's a real shame because if it wasn't for the exhaust manifolds cracking its a very good kit..

Quick Google search points to some stainless steel custom turbo headers. Maybe get some quotes? I don't know much, nor am I able to pursue anything let alone keeping it maintained.

To be honest I would consider a bp kit over the FI mainly because of cost.. It would just be too hard to replicate the ones we have now with no guarantee it would work or anything..

Not to mention the new z should be out next year and it is supposed to be forced induction so there's no telling what these guys are going to do who currently make turbo kits for our cars..

Upgrade, upgrade, upgrade

I finally got my blackstone oil results since I switched to synthetic and the break-in is looking pretty good so far..

That's great news! I just sent mine off a couple days ago so I'll be interested to see what they show.

Well just to let everyone know I have decided to ditch the gtm crap on my car and go with a custom precision 6466 single turbo kit.

6466 ball bearing
T4
.96 AR

Now these specs aren't set in stone so I may make some changes..

.96? So this isn't a twin scroll? And can you get a "custom" kit for cheaper than the BP kit you aforementioned?

It's funny you mention that because I actually sent sasha a pm a few months ago and Never got anything back.:eek:

From what I have researched better performance with the undivided with big runners.

I remember seeing somewhere a while ago Charles was going to make some new manifolds for his own kit to run some bigger turbo's, might have been on facebook or something. Have you asked him about that? Might be a better way for the $$? Would just be a shame to not use your existing kit cause of manifolds.

Charles at cjm was actually my first choice but after texting him a few days it seems he's having issues with getting things together and has no idea as of yet to when his kit would be available... Trust me I'm ready to spread my wings here since I do have a built motor.. I know with that turbo that 850whp is reachable but to be honest I think I will keep things around 750whp that way I wont have to upgrade my 1000cc injectors.. As far as the spool up goes I'm not too concerned because no matter what tire you run it isn't possible to get traction anyway in the lower rpm's..

fair enough man, I understand the not wanting to wait part haha.

keep us updated! always thought about getting someone to build me a single turbo kit but don't really have anyone I'd trust around me who have tackled similar builds before, gl with it all!

cosmo are you planning on running 93 octane or e85 ?

I'm hoping to stay with 93 octane since I don't have too many E85 options close by...:tup:
Hell I even tried calling gtm just so I could speak with sam himself on making things right but the phone just rang and rang...