0.63A/R or 0.82A/R turbo for Civic?
Posted by Ducky_Duck420@reddit | projectcar | View on Reddit | 9 comments
Hey, new here!
I'm thinking about turbo converting a 1.4l civic as a fun little track day project.
My goal is pushing about 300hp since it's going to be about 900kg (convert that to freedom units however you like).
I have a T3 0.82A/R turbo laying on the shelf collecting dust, but I feel like that would give the wrong power curve. I think the better option would be going with a 0.63A/R T6 since that would give me better power in the low rpm's (about 1000rpm difference I believe).
Thank you for opinions in advance, and please skip the comments about pushing 300hp in a D14 civic, I have pushed greater numbers in worse engines. We want to keep a good tone here right?
Jack_ButterKnobbs@reddit
If the turbo is just sitting around whats the harm in throwing it on and seeing what it does. If you dont like how the power comes on then change turbos.
Solid_Enthusiasm550@reddit
A 1.4l 4cyl. Wouldn't even make any boost until 7,000+rpms with a (T6) turbine housung.
I think you meant T4.
Ducky_Duck420@reddit (OP)
T3 was what I meant, thanks for pointing that out!
Solid_Enthusiasm550@reddit
What turbo is it, compressor wheel size, turbine wheel size?
The .82 would probably give a 10<15hp boost but spool a few hundred rpms slower.
Is it a manual or automatic car?
Doctah_Whoopass@reddit
stock d series rods aren't gonna handle 300hp, they're tiny little toothpicks and it gets dicey past 220hp. Fortunately, you can get aftermarket rods and pistons for not much, since its common to use Suzuki gran vitara pistons to lower the compression, and a longer forged rod to get things aligned nicely. Here is what I'm talking about. With that long of a rod and the short stroke of a d14 (usa never got those ones, we have d15 at minimum) it'll probably be very rev happy which will be fun with a turbo.
Ducky_Duck420@reddit (OP)
The plan was going all forged internals anyways, it's not like I want this project done this year anyways. But I might look into the vitara pistons!
Barra350z@reddit
Look at a compressor map and see
Ducky_Duck420@reddit (OP)
I did indeed, thank you for pointing that out!
aredd007@reddit
Still too big unless you’re going for a top end drag build. Compressor map would help but this will make boost very late in the rpm band on a 1.4L.