An N/A guy looking to the darkside. Help me build boost!

[Da Infammus 1]

+1000

Wish I had cash in time to get yours. Now I just have money sitting waiting for the CES manifold and picking a turbo lol.

[Da Infammus 1]

Being TS manifold, running a divided .84 would choke the turbo. I did countless hours of research on this. He would be better off getting either the 1.0 6466 or dropping down to a 6266 with a 1.0 TS. What he gain in spool by running a .84 divided on a 6466 would wouldn't outweigh the loss up top. Therefore if he wants the early response , its better to drop down a size than choke a bigger turbo. Make sense ?

Basically I have come to the conclusion, you can have 700 wheel and lose the hard hit, or you can have 650 wheel and have the hard hit. Take your pick. Can't have cake and eat it too. Unless he can run E85 or race fuel, then he can have both with a 6266. Make 700 and have response with 27-30psi.

But there is no good that will come out of a 6466 with a .84 divided back housing.

You could try it, put a pressure gauge in line and make sure your less than 1.5X. I must have spent 100 hours trying to decided and figure out if a .84 would work.

Is pushing a 6266 to 30 psi constantly out of its efficiency range though?

[Butters Stoch]

Is pushing a 6266 to 30 psi constantly out of its efficiency range though?

Not a gen2.
You would be much better off pushing a 6266 gen2 to 30psi than you would be pushing a 6466 to 25 psi with a .84 back housing. The heat and EGT's would be sky high.

My vote is, if you want big power 750+, get the 6466 with a 1.0.
If you want the response and 650 get the 6266 gen1 with a 1.0. If you want 700 and the response, get the gen2 6266 with the 1.0.
Anyway you look at it, you will need at least the 1.0 back housing. The 0.84 is too small.

[vollosso]

Sorry i forgot he was divided. .8x open housing. Im running a .68 open because its all they had and i am happy with it.

I dont know what size divided to give advice there.

[pbonsalb]

GTX4088R vs PT 6466...thoughts? Pretty much narrowed down to those two that I'd feel comfortable with as a first turbo.

What are you thinking for your second turbo?

[Da Infammus 1]

What are you thinking for your second turbo?

Lol, haven't thought that far ahead

[pbonsalb]

You are starting out with an 850 rwhp turbo, and called it your first, so I figured you would be going for over 1000 rwhp soon.

[Da Infammus 1]

You are starting out with an 850 rwhp turbo, and called it your first, so I figured you would be going for over 1000 rwhp soon.

Engine being installed made 800+whp and had more in it I was told, so that's a possibility. I'm not gonna start with it at 800 myself though, it might be overwhelming.

[pbonsalb]

Butters can get pretty good deals on both the turbos you are considering. But you also might want to look at smaller turbos that will have a broader power band and maybe even more power under the curve on 93 pump plus meth. If you are tuned for E85 then you can probably spool the bigger turbos soon enough. Choice also depends on driving style -- whether you want instant power in any gear or you ate willing to row the gears to make sure you are in the power band.

[GG///M3]

I'd go with the garret turbo

[Da Infammus 1]

I'd go with the garret turbo

Why? I haven't seen any real issues with BB PT turbos, I'm favoring them over garrett. The car won't be driven often enough to put a ton of miles on it, but when it does get driven I'll be driving it hard about 70% of that time.

[pbonsalb]

Probably the non watercooled center section is fine for a street or drag car. A drift or track car turbo would benefit from water cooling. I think the PT are a good value for a street or drag car.

[Da Infammus 1]

Bought a few things for the build, got more planned. I was still wondering if I should try my VAC 286 N/A cams with the turbo setup, but don't want to waste time doing a mod like that if it wouldn't benefit from it. Then I went onto VAC's website and saw these:

https://store.vacmotorsports.com/bmw...rts-p1433.aspx

I wonder what the difference is between these and the ones I have. Probably duration? Because lift on the intake cams seems to be identical, and obviously the exhaust cam has even more lift than my N/A cams. I'd email VAC and ask, but I'm pretty sure their answer will be to buy the turbo cams without giving me any sort of reasoning why and how they're different, being that their customer service/information has been deplorable since day 1 in my eyes although the product themselves have been great.

Edit: went to go compare those to the ones I have on their site and they've taken down all the info for the N/A set, smh. Guess I'll have to pull out the cam card and see if I can compare that way

[vollosso]

What turbo do you have?

[rajicase]

What more have you bought and planned?

DETAILS!

[NY98M3]

Keep what you got, proven performance

Save your $ and get driveline upgrades

[Gordo0208]

Keep what you got, proven performance

Save your $ and get driveline upgrades

Dude shut up! Lol I need his NA cams!!
Don't listen to him! Splurge like he does!
Just. Buy. The. Turbo. Cams.
=D

[Da Infammus 1]

What turbo do you have?

Haven't bought one yet but I'm 95% sure it'll be a 6466.

What more have you bought and planned?

DETAILS!

Bought a turbo manifold, fuel system sans injectors, intercooler, miscellaneous odds and ends. Next up are AKG engine and tranny mounts and turbo so that I can start putting things in place.

Keep what you got, proven performance

Save your $ and get driveline upgrades

I agree, but if I can get some more power out of it with something I already own then why not? Plus I loved the lope sound of my old setup, I'll miss it lol.

Dude shut up! Lol I need his NA cams!!
Don't listen to him! Splurge like he does!
Just. Buy. The. Turbo. Cams.
=D

Shuttup, you lol.

[rajicase]

Do NOT get the akg bolt through trans mounts. I got them and had them out and sold within a week. They were god awful. I have no issues with NVH for the most part. But those were insane. I have the akg poly motor mount, no problem with it. The bolt through trans mounts OMFG...

[vollosso]

Do NOT get the akg bolt through trans mounts. I got them and had them out and sold within a week. They were god awful. I have no issues with NVH for the most part. But those were insane. I have the akg poly motor mount, no problem with it. The bolt through trans mounts OMFG...

:ppp not like anyone told you so mr.rods

[Da Infammus 1]

Do NOT get the akg bolt through trans mounts. I got them and had them out and sold within a week. They were god awful. I have no issues with NVH for the most part. But those were insane. I have the akg poly motor mount, no problem with it. The bolt through trans mounts OMFG...

Gotchya, thanks for the tip. What tranny mounts do you have to replace them, OEM?

[vollosso]

Gotchya, thanks for the tip. What tranny mounts do you have to replace them, OEM?

the rubber with enforcer ones are pretty nice. Uuc and rogue have them

[rajicase]

I just put my oe ones back in but I'd go with vollossos suggestion if I was buying new again.

[rajicase]

:ppp not like anyone told you so mr.rods

Lol I couldn't fathom them being that bad man. Unreal. If I revved my engine in neutral I could feel my teeth vibrating lol.

[E36 HateR]

I have the bolt through trans mounts, i dont really get much nvh.