300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Hello,

I'm building a turbo kit for my stock head and block b18c1 engine. I'm aiming for between 300-350 hp tops. My emphasis is low to mid range turbo spool and power only (not high horsepower numbers), since my priority for the car is stoplight-stoplight driveability with occasional autocross. I'll be using a go auto cast turbo manifold with Hondata S300, and I plan to keep the stock GSR IM w/ IABs.

Will the Garrett Gen II GTX2860r w/ .63 AR turbine housing be a good match for my power and driveability goals? Or would some other GTX variant be a better option (e.g. Gen II GTX2860r w/ .82 AR, or GTX2863r)?

If the Garrett Gen II GTX2860r w/ .63 AR is a good match, is this a fair price? $1398.55 w/ 5-bolt .63 AR turbine housing. https://www.turbokits.com/Turbo_Char...ng_Turbo/6355/

TIA!

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Yes. Perfect for autocross, 280whp-300whp usable power and torque. 5 bolt turbine housing, in a .63A/R means it's in a ford-style housing and although archaic, is just fine.

Dont expect that bigger number without high knock-resistant fuel.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Perfect, thank you!

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

So there's a remarkable difference between discharge types? 5-bolt vs 4-bolt vs V-band?

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Not in power but in ease of installation, better efficiency in checking your issue (if any), weight, gasket leaks, etc.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Also in terms of downpipe placement for people who are trying to keep certain amenities. 5 bolt or vband makes it possible to clear the AC compressor.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

:thumbup: This is why I'm going with the 5 bolt downpipe.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

At a cost of installation/maintenance headaches. (lost bolts, gasket leaks, etc)

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Can you run vband and keep A/C and PS? I thought only 5 bolt could do this?

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

This is what I thought as well.

Shodan: I haven't ordered the turbo yet, so please let me know if there is a better turbine housing option that will allow me to run a/c and p/s with a cast manifold.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Really, for any exhaust manifold, if you can't do the v-band, the 4-bolt version works just fine, and allows you to change manifolds later without having to get a second turbine housing.

I'll PM you further information about the best way to do that, shortly

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

ebay cast manifold for b series really needs the 5 bolt housing becuase it is about 1/2" shorter (pokes out less). I have a 4 bolt outlet and it wont let me use a 3" with a d series ac compressor. wish i got the 5 bolt.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

The key is the manifold type/manufacturer, and the radiator (depending upon chassis ) and the fans. So we need to know more about what the OP currently has

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

I'm using the go-autoworks cast B-series turbo manifold, and as of now, I'm on the OEM radiator. If and when I upgrade the radiator, I plan to stick with a full-size replacement.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Are you using the entire kit?

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

I'll add three things here:
1) yes that turbo will be perfect for your goals
2) get the installation kit with it. This will ensure you have the correct size oil restrictor fitting, and you definitely want to run coolant through the turbo.
Standard coolant hose with hose clamps is fine to use. Just T into both heater core hoses.
3) you definitely don't need a 3" exhaust. 2.5" will work perfectly, and will allow more room around everything. I would suggest a vband housing, but there are no 2.5" vband housing options, so I say stick with the 5-bolt.
Just be careful when making the downpipe for it; 5-bolt housing flanges like to warp a LOT when welding the pipe to it, and create leaks. A lot of times the flanges are actually not even flat even when brand new before welding them to anything (cough Vibrant cough cough). You may need to take the flange to a belt sander to flatten it out after it's made. And don't bother with a 5-bolt flange gasket, just use the Copper ultra high temp RTV to seal it.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Thank you for the info! When you say installation kit, are you referencing the installation kit that is optional for the turbo in the link I posted in the first post?

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

I think he means the oil return flange, oil restrictor, etc from them. I tend to disagree, because the turbokits.com components that they sell are rather sub-par. Most are aluminum, prone to cross threading, and I don't like the quality of their lines. If you want to get the good stuff, Head to B&R Fittings for that equipment.

Specifically here. Select the "GT" series options to work with the Gen II GTX2860R stuff

Oil return line kit

oil feed line - including option for "GT" restrictor option

Water Cooling kit - Use the "BANJO FITTING" Option for ease of installation


On a last note. There's nothing wrong with the 3" exhaust system for this turbocharger or car. Yes, 2.5" is possible, but you're not saving any money and doesn't allow you to change turbochargers should you change your mind or change your build. You'll be fine with that , even at lower boost pressures.

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Awesome, thank you!

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

You will want to stick with the T3 5 bolt housing when paired w/ the cast manifold...NOT a vband or 4 bolt housing when trying to retain a/c and a full length radiator. 5 bolt turbine, B compressor.

A shot of an a/c Street X kit w/ recirculated dump, GTX turbo option, catchcan, etc that was done a while ago...

https://scontent.fhsv1-1.fna.fbcdn.n...2e&oe=5D4F8EC8

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

Excellent, thank you! Is that full size radiator part of your kit? If not, do you sell it?

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

I'm sure he'll sell one to you, but items like radiators, injectors, management, fuel rails, clutches, flywheels, and other supplementals, are not part of any turbo kits. But any quality, full sized aftermarket rafiator with the supporting fans will work. (Koyo, Fluidyne, Skunk2, etc)

Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?
 

That is a Fluidyne radiator w/ Spal fan combo...which is separate from the turbo kit itself.