At least the rod didn't break and SWOLE the block. That weak rod outcome could have been much worse. It happens on FI engines if the rods were not upgraded.

Has anyone heard from Midnight since New Years Day?

Vsr seems to be having fuel problems with his car so he's not a happy camper..

I'm still here! :hello:

:iagree: Yes, Cosmo is right, it hasn't been very thrilling lately. We've been having some fuel related issues, however, Bobby gave me a call today saying he's isolated the problem and is addressing it so if all goes accordingly I could have some final results later this week!

Can't wait to see the results...

Vsr
 

Here is a little story for you all.....

Bobby did my 40th with the kit they offer and after their final tune, I laid down 528 to the wheels at 10PSI. I took my car to Derek at ART for a few minor tweaks and she ran tight.

My only complaint ever about my 40th was that she burned oil from day 1. Not bad, but if I missed an oil change or was late it would not be a good thing.

Well, while having new suspension installed at the Nissan dealer, I asked them to check the oil. Long story short, the burning oil issue is a known problem with "some" 2010 engines, so after an oil consumption test, I was granted a new short block from Nissan.

Installed and ready for pickup. I drover her home and noticed the suspension was lower than I asked for, STILL, and my exhaust seemed to be dragging more than normal and had a small leak. They told me the V-band clamp was cracked and I needed to get a new one. I did, drove her back to Nissan and left it with them for a clamp install, suspension adjustment and a couple other minor things.

The next day I am to pick her up, all tight and the way I wanted her. Around 2pm I got a call from Nissan saying we had a problem. Turns out that during the test drive, they blew a rod, the piston slammed into the head, shattered a valve or 2 which got sucked into the turbo.

I was given a BS story at first of 4th gear low RPM which I immediately didn't buy. Monday I got the truth and entire story......just as expected, a hard 2nd gear pull on a motor with 27 miles and 8PSI is a bad combo.....

SO, here I sit, with no ETA, waiting for my Turbo to be rebuilt by Boost Labs (awesome guy there, Kirk), and a new motor install, complete motor. The only thing coming over from my old engine is my 750cc injectors.

Side note to all 370 Boosters, make sure to change out your plugs to GTR plugs or you'll melt them. Learned that at time of install.

First off...sucks bud. Here's to you getting back up and running soon :tup:

They granted you a new motor even though you were boosted? That's a nice dealer.

Just a question but do you not have a valet map? I would never drop my car at a location other than my tuner without the valet map turned on.

Were you running stock plugs with the turbo kit? Is that standard for the VSR setup?

I do, but am an idiot for not turning it on. The plug comment was just for information. Bobby did put GTR plugs in at time of install. I just wanted to throw that out there as it came to mind while writing the original post.

Ah...yeah running the hotter stock plugs with a FI setup is not recommended:rofl2:

Subscribed!!

I hope someday install a Turbo kit to my Z

Wow granted a new motor after a turbo build from the dealer.. That's shocking! Sorry about your luck.. I know the feeling. We can't all be winners in the FI lottery I suppose. So Nissan is giving you another new engine after they blew up the other one they replaced your original with? Bet they change their policy now.. Lol. Valet mode ftw for sure!

Bobby called me again this morning and sounded optimistic that the troubles they've been having are almost gone completely pending some tuning! Keeping my fingers, toes, and anything else crossed that it can finally be finished tomorrow when the tuner gets there.

good luck on the tuning bro!:tup:

Hey man, If he doesn't get the tuning right, I highly suggest getting your car tuned By Martin while your car is in Tampa. He is highly respected with tuning Nissan's and was one of the first people around to crack VVel tuning when nooone around the area had any clue. But its your money do as you please.

Got some numbers tonight, car did really well! Issues were finally resolved but we did have one minor setback. The wastegate spring was maxed out at 14psi so with that said on E85 and a conservative tune it made 603rwhp with a peak of 545ish rwtrq! Trying to get the vid from Bobby, however, it is posted on their Facebook page. I took a screenshot of the graph for now. We are going to switch out the spring next week and go for 700+ as long as we can anchor the rear end down. My tires suck for this kind of power and the car is on stock suspension. There's a chance it could've put down more if the tires didn't light up the dyno. But I'm relieved and estatic with the current results. The curve is very nice.. and I'm told it is running solid! Bobby might throw on some slicks from another car for another pass with the stiffer spring to see what happens. That's all I really have at the moment but I'll be sure to share more as it comes.

Thanks

Congrats!

Nice...What turbo comes with that kit?

Precision 6266

Standard or Twin Scroll?

Sorry it's JB so I guess standard? Vband setup

That's related to the inlet flange.

Twin Scroll
http://cdn2.bigcommerce.com/server31...0.1280.jpg?c=2

Regular
http://www.himni-racing.com/images/T3_stageIII.jpg

My bad.. Mine is V-Band inlet .82 A/R with V-Band discharge

Looks like this.. Pictures are hard to find that just came up quick.

Ah...not twin scroll. V-band connections on both ends is nice though :tup:

:tiphat: thanks, does make it easy to place or remove. Plus with the way their manifold is setup and location of the turbo I don't know if there'd be enough room for that size a flange?

Yeah...it does look like a pretty tight fit for that kit.

It also gives me an idea why the VSR and BP kit, running the same turbo, produce completely different power bands.

Do you have a graph I can check out with your powerband? Wondering how much difference there is..

sub'ed

Although they are both 6266 turbos, they are drastically different when it comes to performance due to the turbine housing size.

The V-band turbine (.82 a/r) is significantly smaller in physical size, and flows a lot less than the T4 1.15 a/r. I would only ever suggest the (largest available) 1.32 a/r for built engines...why?:

When I performed flow tests on the BP 1.15 a/r turbine by measuring the EBP (exhaust back pressure...pressure in the exhaust before the turbine) I found that the 1.15 a/r turbine is optimal for up to 600whp (6-14 psi of boost on pump gas) on this engine. Pushing more than that is possible, but efficiency goes out the window. The VHR is extremely efficient, and moves a lot of air...so the larger turbine IMO is the only way to go.

Basically, you do not want the exhaust back pressure to exceed the manifold boost pressure by more than 2 fold. So, if you are at 12 psi of boost, the EBP should not exceed 24psi. The 1.15 a/r turbine was tested at around 18 psi of EBP when the manifold pressure was at around 11-12 psi.

What most people forget is that whatever comes out of the compressor side is sent to the combustion chamber, fuel is added, and the mixture is ignited. All this hot gas has only one way out, and that is through a turbine housing. If the turbine is small, the exhaust will not vacate the combustion chamber as efficiently, in tern not allowing fresh new air to enter. (Yes, some goes through the wastegate, but most has to go through the turbine).

This is why I am so excited about the all new PTE 6870 turbo. It has a larger compressor wheel, but more importantly a much larger turbine wheel (high flow capability). This turbo should be the number one choice for those that have their engines built, and really want to push things the extra mile.

Alright. So I'll pose a question. My dose the smaller turbine a/r produce more HP at a lower psi? Likewise why does the smaller turbine produce less low end torque?

Guess that was two questions

I'd have to see the two kits on the same dyno, with the same timing map for a true comparison. I think VSR uses 2.5" charge pipes with the OEM MAF sensors, and my customers find that the MAF sensors are maxed out in 2.75" charge pipes at around 530whp, while VSR has been able to push them much further than that in pipes that are 18% smaller. Again, side by side runs on the same dyno/conditions would be a good comparison.

This pull was also on E85...very different than pump gas.


On a side note...hope that nobody takes my posts as a negative comment towards the VSR kit. VSR has made a lot of these, and they have proven themselves to perform very well. It is very different than what I offer in a kit, and some customers will find that the VSR kit is superior to the BP kit, and vice versa. It will all depend on the customers comfort level, and what they are looking at doing with the car. At the end of the day, if you step on the gas, and it puts a smile on your face...that is all that matters.

He has the uprev maf's btw and a built motor with 10.1 cp pistons..

I was only asking because all the VSR kits seem to make more HP at lower PSI levels but have lower torque numbers overall than the BP kits. Since it's the same turbo, although a different A/R ratio, I was trying to get a free education as to why that might be

How did this thread become a debate between the 2 kits when the subject thread is vsr turbo kit? I have heard nothing but good things between both kits as well.. Congrats on getting your car up and going again thanks for the dyno numbers...

It's not a debate. Was just a simple question. Don't make it something it isn't man :rofl2:

It's all good fellas.. I find it interesting as well as very informative. Thanks for the knowledge Boosted Performance. Like you said each kit is different in several ways and all depends on what the customers wants and needs are.. At the end of the day if it makes you happy that's all that truly matters!

I can't say what the diameter of the charge pipes is off hand but I thought they were 2.75 but without measuring I can't be sure. I'm sure I can get that info from Bobby though. I like the BP kit for what it is and it's obviously proven. Few locals around me have the kit on G35s. I also love the kit I chose to go with which is also proven. One of the biggest things for me was I liked the appeal of a top mount single. It's nice to be able to pop the hood and show the goods. The mid mount and twins don't really allow that easily. VSRs kit fit my needs cause I didn't have the resources or time to DIY and didn't like the extra labor of dropping the engine with twins or not being able to see them. BP is great quality I just don't care for my turbo being underneath the car lol. At the end of the day we are all boosted brothers.

Thanks for following my progress and the support. I'm just glad that the Z is almost ready to come home better than ever! Now if only spring would get here quicker..

Can't wait to see the dyno of 19psi on E85.. Please keep us posted..

You should post your boost curve also.

Will do! Not sure if they will push 19psi though prob more like 16-17psi I'm thinking. Although it may need more.

Man I don't really have anything to post. I hoped Bobby would jump on and post some graphs but he's probably just waiting till the finale. They're suppose to do a video with the car so that should be interesting.

Todays the day!!!!!

I thought the stock manifold is only good up to 17psi? Good luck!!