gt28rs vs 19T vs 16g: getting parts ready - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 01-14-2010, 06:20 PM   #41
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Originally Posted by wayne_curr View Post
They are pretty much just drag racers but also consider that even the B18b head still flows A LOT better than any head that goes on a miata.
For the most part yes, but when you look at dynos you see that many people running t3/t04's still have pretty good low end. As far as the B18b head flowing better, Im sure it flows better, but really not that much better.
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Old 01-14-2010, 06:25 PM   #42
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With the Tein Flex I have traction with crappy Nitto Neogens in 2nd and lots and lots of power and torque.
i'm on rs-2s in 40* weather which might have something to do with it.
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Old 01-14-2010, 06:37 PM   #43
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Originally Posted by Full_Tilt_Boogie View Post
wrong.

some hondas are capable of revving to 9, most are not.

the B18B from the LS integra is very similar to the mazda BP in power output, power band, rod ratio, etc. It limited to about 7500 rpm on the stock bottom end.
people still run 30r and even 35r turbos on them.
the miata community is phobic of large turbos, there is no denying it.
not really, all you would need to rev that to 8200 is b16a or b18c head swap, and with the type r cams springs and retainers or the type r valve train swap mention in the post i was reffering to 9k is common. b18a and all of the b20 blocks going past 8k is not recomended, but b18a1 and b18b and all the factory b series twin cam vtec engine are more than able. And no i'm not a honda fan anymore but i do still work at a honda dealer.
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Old 01-14-2010, 08:44 PM   #44
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Originally Posted by djp0623 View Post
You need to get on a dyno so I can see you rnumbers at 22 psi. I wish you had a 1.8 so I would have a better idea of what to expect on my car. I would like headroom to 350hp


This Saturday! Same dyno.
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Old 01-14-2010, 08:47 PM   #45
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300tq or bust.
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Old 01-14-2010, 08:50 PM   #46
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Wow, shouldn't have brought up the Honda =\ Anyways, I just got home from the local miata shop and the head dude happened to have a 1.6 head that he's been working. There's quite a bit of metal missing from the intake and exhaust ports compared to a stock 1.6. Should help with spool and power, regardless of turbo choice.

Considering the way I drive, wanting to make sure I don't drop out of boost between shifts, and wanting the ability of 300hp, the gt28rs is probably going to get the nod.

Thanks for the help!
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Old 01-14-2010, 09:00 PM   #47
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300tq or bust.


If that your guess?
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Old 01-14-2010, 09:15 PM   #48
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I made 305tq at 18psi. If you can't match that at 22psi there's a large quantity of fail in the .64 housing, lack of displacement, or lack of flow ABSURDity.
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Old 01-14-2010, 09:33 PM   #49
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I made 305tq at 18psi. If you can't match that at 22psi there's a large quantity of fail in the .64 housing, lack of displacement, or lack of flow ABSURDity.
Well there's definitely lack of displacement....... 1.6 bored .20 over
Lack of absurd flow with my bagi cast mani and bell mouth 2.5" dp

I'm pretty happy with how the turbo is performing, going from 16 psi to 22 with meth made a HUGE difference according to my butt dyno and the fact that I can spin tire thru 2nd gear.


I was going to be happy with 280/250 but you now have my expectations up.
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Old 01-15-2010, 01:12 AM   #50
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Originally Posted by levnubhin View Post
Well there's definitely lack of displacement....... 1.6 bored .20 over
Lack of absurd flow with my bagi cast mani and bell mouth 2.5" dp

I'm pretty happy with how the turbo is performing, going from 16 psi to 22 with meth made a HUGE difference according to my butt dyno and the fact that I can spin tire thru 2nd gear.
The question i have: what would your numbers translate to a .20 over 1.8 with similar manifold and exhaust. if i can only get to 300hp i'll be disappointed. since i have put so much money into this motor. I'd want to put a bigger turbo on, but like brain said; late spool will start to kill fun. What are the specs on the 3071?. If spelling sucks i apologize. i cant see what i'm typing because my phone keyboard is in the way. F***ing awsome levnubin!. Give that dyno hell. i'm counting on you to put up big numbers.j
Alright, I tried to clean up the spelling
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Old 01-15-2010, 07:37 AM   #51
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OP: Is this on a 100% stock 1.6? Or is the motor going to be built?
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Old 01-15-2010, 09:47 AM   #52
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If spelling sucks i apologize. i cant see what i'm typing because my phone keyboard is in the way. F***ing awsome levnubin!.
bored at work much?
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Old 01-15-2010, 09:54 AM   #53
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All you gays building cars with a 1.6, internal gate, or cast manifold need to get jobs.
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Old 01-15-2010, 10:20 AM   #54
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All you gays building cars with a 1.6, internal gate, or cast manifold need to get jobs.
Or you can just redistribute your wealth like some other dude I know of.............
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Old 01-15-2010, 10:33 AM   #55
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Originally Posted by djp0623 View Post
The question i have: what would your numbers translate to a .20 over 1.8 with similar manifold and exhaust. if i can only get to 300hp i'll be disappointed. since i have put so much money into this motor. I'd want to put a bigger turbo on, but like brain said; late spool will start to kill fun. What are the specs on the 3071?. If spelling sucks i apologize. i cant see what i'm typing because my phone keyboard is in the way. F***ing awsome levnubin!. Give that dyno hell. i'm counting on you to put up big numbers.j
Alright, I tried to clean up the spelling
Are you using 2554 as per your sig? Stock IM? Really expect 300 from that setup? You and I seem to be on the same track, time-wise, on our builds. I should have my built .5mm (.020) overbored 1.8/'00 head back in like 2 weeks. I'm on 2560, no port work, stock IM, tubular ex mani. I'll be fueling with E85. If I get 300 I will probably suck my own ****. Maybe I am wrong-headed in sticking with the tiny turbo, but I am looking for instatorque from <3000 pulling second gear out of turn-around cones.
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Old 01-15-2010, 10:35 AM   #56
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Or you can just redistribute your wealth like some other dude I know of.............
I'm looking for chicken to flip.
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Old 01-15-2010, 10:38 AM   #57
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Originally Posted by webby459 View Post
Are you using 2554 as per your sig? Stock IM? Really expect 300 from that setup? You and I seem to be on the same track, time-wise, on our builds. I should have my built .5mm (.020) overbored 1.8/'00 head back in like 2 weeks. I'm on 2560, no port work, stock IM, tubular ex mani. I'll be fueling with E85. If I get 300 I will probably suck my own ****. Maybe I am wrong-headed in sticking with the tiny turbo, but I am looking for instatorque from <3000 pulling second gear out of turn-around cones.
Currently on 2554, but buying the same turbo levnubin is using.
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Old 01-15-2010, 10:38 AM   #58
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I'm on 2560, no port work, stock IM, tubular ex mani. I'll be fueling with E85. If I get 300 I will probably suck my own ****.
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Old 01-15-2010, 10:40 AM   #59
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bored at work much?
I was waiting for a friend at a beer joint. I just can't stay away from this place. I love you guys
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Old 01-15-2010, 11:09 AM   #60
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I'm looking for chicken to flip.

Any breast?
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