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

 
Old 03-11-2019, 11:56 AM
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Default 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!
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Old 03-11-2019, 01:14 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by 0ptimus prime View Post
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!
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.
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Old 03-11-2019, 01:52 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by TheShodan View Post
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.
Perfect, thank you!
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Old 03-11-2019, 02:28 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by TheShodan View Post
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.
So there's a remarkable difference between discharge types? 5-bolt vs 4-bolt vs V-band?
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Old 03-11-2019, 07:45 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by Txdragon View Post
So there's a remarkable difference between discharge types? 5-bolt vs 4-bolt vs V-band?
Not in power but in ease of installation, better efficiency in checking your issue (if any), weight, gasket leaks, etc.
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Old 03-12-2019, 05:00 AM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by Txdragon View Post
So there's a remarkable difference between discharge types? 5-bolt vs 4-bolt vs V-band?
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.
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Old 03-12-2019, 10:38 AM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by Chance EG View Post
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.
This is why I'm going with the 5 bolt downpipe.
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Old 03-12-2019, 07:26 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by 0ptimus prime View Post
This is why I'm going with the 5 bolt downpipe.
At a cost of installation/maintenance headaches. (lost bolts, gasket leaks, etc)
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Old 03-12-2019, 08:28 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by TheShodan View Post
At a cost of installation/maintenance headaches. (lost bolts, gasket leaks, etc)
Can you run vband and keep A/C and PS? I thought only 5 bolt could do this?
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Old 03-12-2019, 10:37 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by B00STD View Post
Can you run vband and keep A/C and PS? I thought only 5 bolt could do this?
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.
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Old 03-13-2019, 11:34 AM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by 0ptimus prime View Post
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.
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
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Old 03-13-2019, 02:09 PM
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Default 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.
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Old 03-13-2019, 11:24 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?


5 bolt 3 inch downpipe with a/c.......dual backdoor intercooler..... huge pain in ***. Not finished yet trying to find the correct way to mount the fans.

Last edited by Cole D; 03-13-2019 at 11:27 PM. Reason: Adding information
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Old 03-14-2019, 05:36 AM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by TheShodan View Post
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
Originally Posted by turbociv910 View Post
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.
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
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Old 03-14-2019, 09:55 AM
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Default 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.
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Old 03-14-2019, 04:12 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by 0ptimus prime View Post
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.
Are you using the entire kit?
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Old 03-15-2019, 04:25 AM
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Default 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.
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Old 03-17-2019, 06:28 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by motoxxxman View Post
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.
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?
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Old 03-18-2019, 11:47 AM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by 0ptimus prime View Post
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?
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.

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Old 03-18-2019, 12:28 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Awesome, thank you!
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Old 03-20-2019, 04:34 AM
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Default 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...

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Old 03-20-2019, 02:36 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by Autoworks View Post
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...

Excellent, thank you! Is that full size radiator part of your kit? If not, do you sell it?
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Old 03-20-2019, 05:20 PM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by 0ptimus prime View Post
Excellent, thank you! Is that full size radiator part of your kit? If not, do you sell it?
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)
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Old 03-21-2019, 03:38 AM
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Default Re: 300-350hp limit on stock B18c1 - GTX2860r Gen II?

Originally Posted by 0ptimus prime View Post
Excellent, thank you! Is that full size radiator part of your kit? If not, do you sell it?
That is a Fluidyne radiator w/ Spal fan combo...which is separate from the turbo kit itself.
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