About to start my first turbo build... b16a

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24-08-2009, 11:34 AM
MacDiZZle

Quote:

Originally Posted by Lukezen27

NO NO GT28r is not to big in fact pros use GT30's with 0.63 rear for VTec B's

You need to remember hit'n VTec adds a huge amount air flow

Not to mention the smaller the turbo the higher chance of your motor going pop

wonderful thanks lukezen now im really confused! :p what would YOU do if you were in my situation?
24-08-2009, 11:38 AM
Lukezen27

Quote:

Originally Posted by MacDiZZle

wonderful thanks lukezen now im really confused! :p what would YOU do if you were in my situation?

If this was my first turbo build I'd buy a rev harder kit from the US hands down..

They come with a GT2871R plus everything you need witch is great coze you miss stuff left right and center building your own lol
24-08-2009, 12:42 PM
B16

Brad, when you can come for a drive in mine and you'll see what the 2860rs with the .86 rear feels. I love it! The 2871r is also a great size turbo.

Luke, I'm lacking understanding, why would a smaller turbo be more likely to blow up a motor?
24-08-2009, 12:55 PM
Lukezen27

Quote:

Originally Posted by B16

Brad, when you can come for a drive in mine and you'll see what the 2860rs with the .86 rear feels. I love it! The 2871r is also a great size turbo.

Luke, I'm lacking understanding, why would a smaller turbo be more likely to blow up a motor?

Added heat man

The smaller they are the hotter they run at the same PSI
24-08-2009, 01:21 PM
FastFwd

Quote:

Originally Posted by B16

Brad, when you can come for a drive in mine and you'll see what the 2860rs with the .86 rear feels. I love it! The 2871r is also a great size turbo.

Luke, I'm lacking understanding, why would a smaller turbo be more likely to blow up a motor?

To explain what lukenzen said...turbos have an officency rating. When the turbo runs outside of it officency rating it starts to cause more heat than good.

GT28's can run upto 28psi Theoretically but air temp that would be pushing out would be extremely bad for the motor.
24-08-2009, 01:43 PM
Limbo

it think your confused with turbos

GT28R - GT2560R
Next stage up - GT28RS - GT2860RS
Next stage up, then u have GT2871R & GT2876R

The u get to the GT30 range

Just rem that each turbo is bigger so they get laggier as they go up.

Also on a small turbo when they become less efficient they have a tendency to choke up the engine, & some of the exhaust does not pass through properly, which can lead to extra heat & motor pinging etc...

GT28R with a .64 rear would be the smallest i'd go, anything smaller than that is gonna choke up top.
24-08-2009, 01:47 PM
MacDiZZle

ahhh thats makes more sense then lol i thought by GT28R you meant the GT2876R

the rest i knew
24-08-2009, 01:49 PM
Limbo

GT2876 is an odd turbo. It has problems due to its compressor turbine being too big for its exhaust turbine.

I'd stay away from that one if i were you. It was built for large twin turbo setups.

Biggest in the GT28 range would be the GT2871r, if you want bigger your better off going for a GT30 range
24-08-2009, 01:58 PM
MacDiZZle

Quote:

Originally Posted by B16

Brad, when you can come for a drive in mine and you'll see what the 2860rs with the .86 rear feels. I love it! The 2871r is also a great size turbo.

Luke, I'm lacking understanding, why would a smaller turbo be more likely to blow up a motor?

sounds goods man! thursday alright?
24-08-2009, 05:05 PM
FastFwd

I reckon...short ram manifold, gt2860r (AKA gt28rs, AKA Disco potato) China cooler...nothing to massive. Paint it black and mount it cleanly behind your stock bumper. Keep internal gate if you going to stay around 8psi. Hondata ecu, 400-500CC RC injectors. Get dump to cat 3inch then high flow cat and use your 2.25 exhaust for now That will be enough. I reckon you'll get 160kw on 9-10psi
24-08-2009, 05:31 PM
ZeForce

Quote:

Originally Posted by MacDiZZle

Im not actually that concerned on actual power number... any power increase is great and something like 150kw would help my track times heaps if i can get that. as i said earlier im more concerned about driveability. i dont want crazy amounts of boost up high with a huge lag down low but rather a steady power curve that will produce power right throught to redline. the turbo that will do that for me is the turbo i want lol

Sounds like you want a disco potato (GT2860RS)

btw guys GT3071R and GT2871R both have 71mm compressor wheels and both have similar efficiency maps, the biggest difference between them is the turbine (the GT30 actually have more efficient turbines)
24-08-2009, 10:10 PM
MacDiZZle

Quote:

Originally Posted by FastFwd

I reckon...short ram manifold, gt2860r (AKA gt28rs, AKA Disco potato) China cooler...nothing to massive. Paint it black and mount it cleanly behind your stock bumper. Keep internal gate if you going to stay around 8psi. Hondata ecu, 400-500CC RC injectors. Get dump to cat 3inch then high flow cat and use your 2.25 exhaust for now That will be enough. I reckon you'll get 160kw on 9-10psi

Quote:

Originally Posted by ZeForce

Sounds like you want a disco potato (GT2860RS)

btw guys GT3071R and GT2871R both have 71mm compressor wheels and both have similar efficiency maps, the biggest difference between them is the turbine (the GT30 actually have more efficient turbines)

im sold! gt28rs it is!!!! im still coming round to see urs but matt haha it will be my virgin experience in a turbo honda!:o

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