Found a really cheap GT3776R - any feedback?
#1
Senior Member
Thread Starter
iTrader: (7)
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 754
Total Cats: 68
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Anyone use one of these on our little motors? Expecting some bs spool time but I'd like to hear it from you. Can't seem to find much when searching...
I'm running the GT2860RS to it's limit as is.
I'm running the GT2860RS to it's limit as is.
#4
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I've driven a 30r bp and it hits hard at around 5.
I've driven a 35r bp and it hits shortly after (5500-5700ish?)
So a guess would be that this thing would be cookin by 6k. Which gives you roughly 1-1.5k worth of powerband. If you're going for a highway queen or plan to rev to 8 you might pull it off. Would be interesting to see the results lol
Post full specs for a "better educated guess"
I've driven a 35r bp and it hits shortly after (5500-5700ish?)
So a guess would be that this thing would be cookin by 6k. Which gives you roughly 1-1.5k worth of powerband. If you're going for a highway queen or plan to rev to 8 you might pull it off. Would be interesting to see the results lol
Post full specs for a "better educated guess"
#6
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
iTrader: (10)
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,987
Total Cats: 359
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I have a customer with a genuine 3076, hitting full boost (29psi) at 4000rpm. He called me the other day as he wants to upgrade to a 3782. I was skeptical at first, but the maps looks good on that beast.
#10
Elite Member
iTrader: (12)
Join Date: Nov 2009
Location: Harpers Ferry WV
Posts: 1,516
Total Cats: 20
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
DO IT!!!! You will need to spin the motor a little higher but seeing your signature you can do that no prob. Faeflora is spinning his to 8k with stock head no problem. That turbo will come in like a train in high rpm. I am slightly bias because I like a bigger turbo over a smaller one anyday.
#11
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
iTrader: (10)
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,987
Total Cats: 359
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
He has already found a used 3782 locally for $700.
His setup:
1.8VVT, fully forged
Custom header manifold
80mm exhaust (3.2")
BE oil pump
FIC 1150cc EV14 injectors, M-Tuned fuel rail
Snow Performance S3, port WI kit
Tial BOV and EWG
Enhanced MS2 ECU
His setup:
1.8VVT, fully forged
Custom header manifold
80mm exhaust (3.2")
BE oil pump
FIC 1150cc EV14 injectors, M-Tuned fuel rail
Snow Performance S3, port WI kit
Tial BOV and EWG
Enhanced MS2 ECU
#13
Senior Member
Thread Starter
iTrader: (7)
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 754
Total Cats: 68
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
DO IT!!!! You will need to spin the motor a little higher but seeing your signature you can do that no prob. Faeflora is spinning his to 8k with stock head no problem. That turbo will come in like a train in high rpm. I am slightly bias because I like a bigger turbo over a smaller one anyday.
#18
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
OP there is better options then a GT3776R, even for 'cheap' IE $700-800 dollar range there is a few Borgwarners that will outperform it. Look into this turbo:
http://www.full-race.com/store/turbo...670-turbo.html
Eating that GTX3071R's ***!
![](https://www.miataturbo.net/attachments/engine-performance-56/34940-found-really-cheap-gt3776r-any-feedback-borgwarner-s200sx-7670-turbo-content-14.jpg?dateline=1329968803)
#19
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I've driven a 30r bp and it hits hard at around 5.
I've driven a 35r bp and it hits shortly after (5500-5700ish?)
So a guess would be that this thing would be cookin by 6k. Which gives you roughly 1-1.5k worth of powerband. If you're going for a highway queen or plan to rev to 8 you might pull it off. Would be interesting to see the results lol
Post full specs for a "better educated guess"
I've driven a 35r bp and it hits shortly after (5500-5700ish?)
So a guess would be that this thing would be cookin by 6k. Which gives you roughly 1-1.5k worth of powerband. If you're going for a highway queen or plan to rev to 8 you might pull it off. Would be interesting to see the results lol
Post full specs for a "better educated guess"
See my videos for 1st and second gear samples. Small turbo guys who ride in my car at lower speeds say it is very peppy.
![Party Kitty](https://www.miataturbo.net/images/smilies/birthday[1].gif)
Totally wrong. My car can still turn and is lots of fun coming out of a turn in second or third gear. I am not a track guy but if I wanted maximum track power though I would probably go for a 62mm turbo and run e85 or race gas and more and go for 600hp.
OP I ran a GT3071 for a few years and it was a lot of fun but it wasn't enough power for me. It was fast but not faster than god and I did lose a couple of highway races.
The 3776 is not that much bigger. Go for it and you can probably make a solid 450hp. Much more fun than where you are now but a bigger turbo will be even more fun.
#20
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
1st: 9psi @ 8000RPM
2nd: 20psi @ 8000RPM
3rd: 33psi @ 6500RPM
4th: 33psi @ 6000RPM
5th: 33psi @ 5800ishRPM
33psi is max boost. Would probably hit 40psi at that RPM too. Will find out.
Note that my 1:1 gear is 5th since I have a six speed.
Thread
Thread Starter
Forum
Replies
Last Post
Zaphod
MEGAsquirt
47
10-26-2018 11:00 PM
Frank_and_Beans
Supercharger Discussion
13
09-12-2016 08:17 PM