I hope so! I built the 2.0 because I had been given a block and crank, and the head with the car when I bought it and I bought the hta71 on sale and I got the cams on sale lol. All in all I think I probably have like $1500 to $2000 into the build.
I would have built a long rod 2.4 otherwise and gone with a green most likely.

I also bought the FP race manifold (the cast one) because it's on sale for $275 and I couldn't pass it up. I'll probably gasket match it to the head if it needs it, probably will. I can't wait to see what it'll do. I've actually never driven an Evo that was putting down real amazing power. I think my friends RS on the 9 turbo was the only other one with a stock size I've driven.
I drove mine with a 6262 before it was mine and it was cool on boost but would be terrible to daily.

 

Really excited to see your results. I have the 71hta on my IX. It makes 450/400 and pulls like a freight train. I can't imagine pushing its limits further with a built block. Very jealous.

 

I'll probably go to Tscompusa for a tune so hopefully he'll be able to get some awesome power out of it and share with the group.

My goal for my sr20 swapped 240 was to trap over 120 in the quarter and since I traded it for the Evo, that goal still stands. Next spring we will see what it'll do.

I am quite jealous of the mivec gains the IX has over the 8. I briefly looked into getting a 9 head and wiring for it but I had just replaced my entire chassis and engine harness (had previously been tucked and had some weird issues) plus I already had an AEM V1, not a great aftermarket ecu but arguably better for tuning than a Romd stock one. We'll see if I regret not swapping to the stocker. I can handle the not starting for a few cranks but the other issues I had need to go away and I think they will since my engine had 140,0,35,40 compression and leaked oil like mad.

 

Meh. A 2.0 is gonna run forever with no problems. I decided to stock with it too

 

https://www.evolutionm.net/forums/ev...1hta-evo8.html

Here is what I was able to do on a stock bottom end, S2's, 9.8 hotside on 93. Never had the chance to turn it up on E85 but it is a great turbo. Even with running a 10.5 hotside you'll start running out of steam at or around 7k. But, like I said it is an amazing turbo for the price.

 

Wow you made 300tq really quick! That's my goal, but I'm afraid some of my mods are going to limit my low end power and slow spool down. Those were some great numbers on a MD too.
I wonder how much an O2 dump dump would have helped of any. I guess before the turbine was the restriction though. .

 

You can't slow spool on a 71HTA

 

This

 

Sure you can cold side boost control is how I implemented traction control. vent the reference line to the top port of the bov. keeps shaft speed though the roof , and I killed a couple 71s with my unorthodox ways.

I had a 71 with s2 cams and Skunk 2 manifold, external dump and stock exhaust manifold. an absolute street and twisties monster.

 

Why would you want traction control?!? lol

Good to know, man I can't wait to get this thing on the road. I haven't been able to work on it at all this week.

I know ratsbud used the stocker cut down, but what WGA does everyone else use? I dont suspect this thing will be able to hold a ton of boost out the top and as long as its still making decent power to 7k I won't worry about the boost. I was originally going to get the "25psi" WGA form FP but I can't find it on their site. I have a 3 port and the AEM to tweak the boost, I have read about others using a manual boost controller on the line to help it keep the flapper closed or something and then control the top end with the EBC. thoughts?

Another thing I'm worried about affecting spool is my turbine housing looks like total crap. Its not just cracked it has chunks missing from the volute.

 

I have the FP 18psi WGA. Works perfect. Good for 36psi.
I wouldn't run a 25psi wga. That would leave you with no safety net.

 

the 25psi WGA opens much earlier. mine did. probably has a lot to do with turbine back pressure. after all were on a stock turbine pushing more than the stock compressor ever dreamed of. I've used a bunch of wastegate actuators. a cut stock one was cost effective however . sparky let me have one of his which I can't recall the preload on it. in fact I still owe it to him... years later crap..

 

I got my car running today and got to drive it around a little bit before we had to leave.
Oh man, having a good running engine makes such a big difference it driveability and startup! (obviously) I think I'm more excited about that than anything else after having 3 years of fighting the dang AEM to get the car started.
It's not so bad having to crank it over 2 or 3 times for it to fire then it roars to life and doesn't have to be peddled to keep it running.


I got into no more than 7psi just real quick, I'm pretty sure I either have a massive boost leak, my intake is whistling, or this is the coolest sounding turbo ever. Just taking off from a stop is so much different than before, I ran it up to probably 4k or so and got into 5 psi, maybe a bit more and it felt really good, then again I'm used to the miata everyday and a dump truck would feel fast by comparison.

I cannot wait to get the engine broken in, get bigger injectors, run out of fuel pump, mod it, and turn it up some more to see what this thing will really do on a built 2.0!

 

Ya they say those turbos with the fap covers are loud

 

I have a Green with that cover. I dunno about loud, but it does whistle a bit. Just enough to hear at lower RPM and have fun with.