Hey my engine is getting built and is almost done. I'm gonna be running the gt35r pl kit ,I've read its hard to make 500whp with the t3 gt35r, my question is what would be the best alternative, turbo wise with this kit, I have a new 6266 vband .82ar I was thinking about cutting the t3 off and making it vband but I thought I would ask for some opinions before I cut up the kit and its journal bearing wasn't sure how much it would affect spooltime also, any help would be appreciated thanks. Btw my power goal is 600whp with pump gas /or e85

 

500whp isn’t a problem with this kit at all… I made just over 500whp with stock exhaust manifolds recently; on 91 octane gas too… this was at ProEFI’s dyno. Another local Z made 600+ whp on E85 with the same kit. I’d recommend upgrading to the 1.06 exhaust housing though, but that’s all you’ll need to make 500whp on pump.

 

ThatV35guy, recently made 507whp. That was without a return fuel setup. Once, he adds a return setup his car will easily make more. So, I'm not sure where you heard it was hard to make 500whp.

 

Beat me to it!

 

Here’s the dyno:



I’m running a built short block, stock heads, Deatschwerks 600cc injectors, a Walbro 255LPH fuel pump, and factory return less fuel system, for now at least (waiting to install bigger injectors, pump, and CJM Stage 0 RFS).



Edit: Hey Mike! How’s the Z coming along?

 

It's getting there. Hopefully it will be ready to fire up by Saturday. It's just been too hot! I can't wait to get it back out on the street.

 

Nice! Thanks and there was a thread when i searched, about powerlab won't make 500 hp had like 18 pages or something, I plan on 1000cc injectors and stage 1 or 2 cjm fuel return with a dw 300+Lph fuel pump, is that housing required? I can put my precision 6266 on instead. If that will yeild better numbers I have 2 turbo don't really want to spend 400 for a different housing and what's all needed to run e85? I really wanna keep it to 93ocatne

 

I am really wanting 600whp should I just ditch the gt35r? And put the 6266 on? Is there a better turbo option also is the stage 1 or 2 cjm fuel return overkill for 500-600whp? Would the stock rails and the cjm stage 0 suit me fine? With a dw 300+lph pump?

Dw1000cc injectors,stage 2 fuel return,snowperformance stage 2 meth kit, power lab gt35 kit with built block with jwt s1 cams, hpx maf sensor,possibly megan headers and 3.5" single exhaust after downpipe, that's what my plans are I also have the kenitix velocity intake mani,and unorthodox underdrove pulleys what kind of power could this setup produce with 93 pump? Tuned with osiris

 

How available is E85 in your area? This is a DD right? If your tuned for Meth it will become a pain. Unless you build your tune around 93 and use it strictly as safety. But still your going to have to monitor that and you will fill your cab with gauges if you want to do it right.

Id go with rails. Why go that big and then risk starving the engine for fuel and popping it? You can find an entire used setup for like $300 on here. Thats pennies compared to what you are dumping into this. Plus if your going with only a 300lph you will need the flow.

FYI. I went with E85, cosworth rails, -8 feed line split, -6 return, 340lph and ID1000's. My duty cycle was 76% making 507whp corrected.

 

I made 554hp and 584 tq on my powerlab setup. Running e85 stage 2 cjm return system, 340 pump and 850cc injectors. Osiris tune by Mac autosports in Denver.

 

You will go much further on that 6266 turbo. Journal bearing won't affect initial spool time enough to even notice. what it does is reduce lag between shifts since the shaft can spin more freely it doesn't lose speed when you go off the accel pedal.

The 6266 has made mid 600 hp on pump gas without any issues. It can be pushed into the mid 700's on higher octane. I personally think garrett turbos are junk and the seals fail too easily on them. People might argue differently since there are only a small amount of people using them but in the greddy twin kit it's common for seals to go bad and every other platform that runs garrett are plagued with frequent rebuilds.

And yes, they are correct you need a way bigger exhaust housing to get those numbers. The standard housing (.8 or something) on them will choke down the engine since greddy uses a small turbine. I know there are probably 2 or 3 guys on here getting mid 500's on the PL kit but there are more than 10 on here that have dumped tons of money to barely break into 500hp at respectable shops (dynosty) with that kit so that's where the skeptism comes from. My personal friend switched to a PL kit from a vortech and couldn't break 500hp even after dropping tons of money and doing everything that Intense told him to. He was mid 500's on his vortech t-trim so it wasn't the engine.

I'd use the precision turbo if it was me.

 

The PL kit will make 500whp on pump all day; you just have to pickup the 1.06 exhaust housing. I think I paid $350 for my housing, it’s a direct swap too, I didn’t have to modify the downpipe, etc. …so, if you don’t want to modify the exhaust piping, keep the 35R and swap the exhaust housings (you’ll need E85 to make 600whp though). If modifying the downpipe and up pipe isn’t an issue for you then go with the larger Precision turbo.

 

Nice! Do you have a dyno/build thread? I’m looking to upgrade my fuel system and switch to E85 too.

 

If I switched to vband would the .82 vband housing flow more than the gt35r t3 .81 or whatever it comes with and it it be worth switching too and there's a few places for e85 not a lot and it is not the dd

 

No, I don’t think they there’d be any appreciable difference… just get the 4 bolt 1.06 housing if you’re using the 35R.

 

Are you talking about the vband for the 35r or the vband precision?

I think sasa looked up flow on the vband that is offered through precision verses precision t3 .81 a/r and the vband flows more like the t4 that precision offers due to the cross sectional area. If this is the same case with the garrett turbos then the vband will flow more but I'm not sure if it will flow more than the 1.06 t3 or not.

 

I am going to convert the pl kit to accept the vband 6266, that turbo is an upgrade in their new kits, I will be getting stage 2 fuel return or maybe stage 0 and mod the stock system a bit ,1000cc injectors and probably a single pump that will work good with e85 but well see I may just stick too 93 pump and see what she can do

 

FP Super94 turbo if you are serious about making 600+whp, and it just bolts right on. Highest HP 67mm turbo right now

http://trueevo.com/forums/showthread...in-Performance

http://store.forcedperformance.net/m..._Code=Turbo-FP

 

If you are converting anything, get a T4 flange welded up to the up pipe, buy a 6766 T4 .81 or .96 turbo, and call it a day. That will get you well in to the 600's on pump gas.

 

If you get the CJM stage 0 buy the dampened fuel rails he has and then just upgrade your supply line by building your own 8an SS braided line. The stock supply line is too small to get good flow if you wanted e85.

As for fuel pumps the new walbro 485 seems to be about the best bet for single pump e85.