which turbo for a b18c2?

[TEGZOTIC]

planz changed and never got around 2 turboing the dc2...
now driving a 180sx with a gt2871r 0.86..
i definatly wouldnt recomend a massive turbo on a honda tho. its useless. you will have huge turbo lag, and unless your boosting to 17psi min your not in the efficiency range. and i doubt many ppl will be doing that here as your all high comp.

[Weq]

planz changed and never got around 2 turboing the dc2...
now driving a 180sx with a gt2871r 0.86..
i definatly wouldnt recomend a massive turbo on a honda tho. its useless. you will have huge turbo lag, and unless your boosting to 17psi min your not in the efficiency range. and i doubt many ppl will be doing that here as your all high comp.

I know this turbo. Its stupid. it boosts so late on an SR and doesnt even make the power to back it up. Friend had the same setup. I guess its the whole fact its T28 based. All the nissan guys are scared of the T3 framed turbos. Just for your information, switch to a GT30R and u will gain middrange, and massive topend!

the 2871R was designed for twin applications. Large bores.

[TEGZOTIC]

I know this turbo. Its stupid. it boosts so late on an SR and doesnt even make the power to back it up. Friend had the same setup. I guess its the whole fact its T28 based. All the nissan guys are scared of the T3 framed turbos. Just for your information, switch to a GT30R and u will gain middrange, and massive topend!

the 2871R was designed for twin applications. Large bores.

yeah your right the .86 has way 2 much turbo lag if your not planing on running more than 20psi. the gt30 .64 is a better option but reason i didnt chose that is because i would have top go high mount of the 180, which would get me defected in 5seconds,lol but im pritty happy with the 2871,, but should have chose a lower rear aR.

[Weq]

yeah your right the .86 has way 2 much turbo lag if your not planing on running more than 20psi. the gt30 .64 is a better option but reason i didnt chose that is because i would have top go high mount of the 180, which would get me defected in 5seconds,lol but im pritty happy with the 2871,, but should have chose a lower rear aR.

Yeh did u get the t04e 4" compressor cover too? We were running 20psi on my friends, making around 250kw. I used to like driving it, it wasnt all that bad above 5000rpm. Was run to drive. It just had nothing below, and no partial throttle boost. gaahhh. I mad the mistake too. i used a T3 based GT2871R on my civic, .64A/R. Same problem, no partial throttle boost and the power it made just didnt justify the lag.

[TEGZOTIC]

Yeh did u get the t04e 4" compressor cover too? We were running 20psi on my friends, making around 250kw. I used to like driving it, it wasnt all that bad above 5000rpm. Was run to drive. It just had nothing below, and no partial throttle boost. gaahhh. I mad the mistake too. i used a T3 based GT2871R on my civic, .64A/R. Same problem, no partial throttle boost and the power it made just didnt justify the lag.

nah i got the 3" comp cover.. boosts at around 4krpm,, anything below that and its basicaly on zero,lol so yer a fair bit of lag,, i know ppl spooling up at the same rpm with gt30's..
but im quiet happy with the power its making. hondas should boost a bit faster as there high compression engines. but its not like you can run a lot of boost on high comp..
thats y i say big turbos are useless unless your going to be boosting in there efficency range which is usualy 17psi+.

[Weq]

nah i got the 3" comp cover.. boosts at around 4krpm,, anything below that and its basicaly on zero,lol so yer a fair bit of lag,, i know ppl spooling up at the same rpm with gt30's..
but im quiet happy with the power its making. hondas should boost a bit faster as there high compression engines. but its not like you can run a lot of boost on high comp..
thats y i say big turbos are useless unless your going to be boosting in there efficency range which is usualy 17psi+.

Its a good point, but remmber that compression and VE of a motor has an impact on compressor efficeny of the turbo

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Its a good point, but remmber that compression and VE of a motor has an impact on compressor efficeny of the turbo

It might change the operating points but it doesn't change any characteristics of the compressor.

[Bludger]

planz changed and never got around 2 turboing the dc2...
now driving a 180sx with a gt2871r 0.86..
i definatly wouldnt recomend a massive turbo on a honda tho. its useless. you will have huge turbo lag, and unless your boosting to 17psi min your not in the efficiency range. and i doubt many ppl will be doing that here as your all high comp.

your car lags cos sr20's run low compression

running a big turbo on Hondas you will get less lag cos its a high compression engine....

off boost, there is virtually no lag

[TEGZOTIC]

yeah thats true but i can run a lot more boost then a honda can because of the compression. unless you can afford c16 fuel or something so it doesnt detonate

and yes once your ofboost you are LAGING , thats what lagging is... sr20's arnt that bad of boost,,, they just seam slow ass when you compare when boosting..
personaly i dont care about lag so much anymore,, iv totaly changed my setup now.. forged pistons, gtk550 turbo, ect ect, aiming for an easy 300rwkw's ,,, so lag is a must but dont realy care as im buiding it for drag\street purposes.

[string]

and yes once your ofboost you are LAGING , thats what lagging is... sr20's arnt that bad of boost,,, they just seam slow ass when you compare when boosting..
personaly i dont care about lag so much anymore,, iv totaly changed my setup now.. forged pistons, gtk550 turbo, ect ect, aiming for an easy 300rwkw's ,,, so lag is a must but dont realy care as im buiding it for drag\street purposes.

You are confusing LAG with BOOST THRESHOLD. Lag is the TIME it takes for you to build boost once you plant the throttle. Boost threshold is the engine RPM at which you build boost.

Sadly 99% of the world doesn't know the difference.

[Weq]

You are confusing LAG with BOOST THRESHOLD. Lag is the TIME it takes for you to build boost once you plant the throttle. Boost threshold is the engine RPM at which you build boost.

Sadly 99% of the world doesn't know the difference.

This turbo provides both in ample quantities.

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This turbo provides both in ample quantities.

Doesn't matter when you drive a nissan, it's all about the number on the dyno sheet.