Hey guys, I just got an EVO 9 and wanted to put a turbo kit in it. I am looking to build the car up slowly and was wondering how a HTA 3586 Spool would fair on a stock Block.

The Mods I'm going to purchase are:

4.5" BR FMIC
3.5" ETS Exhaust
BR Double Pumper
2000cc Injectors
E85
Exedy Twin Disc Clutch
GSC S2 Cams

 

That will be a good turbo for stock block. Doesn't spool too late or too early.

 

When will it start kicking in? Also when will I see full boost?d

 

first off you should search in the tuning & results area for dyno graph! also add big injectors to your list if you dont have them already

the hta86 is a pretty big turbo for a stock long block, it will have its limits for sure if you want your motor to last and get the most out of the turbo! if you do plain on building the motor and pushing your setup then its a great turbo.. my guess the car wont start moving till about 5k rpm's and obviously your not going to be revving it too long either, so are you looking to run high boost with e85?

lucky for you that your so close to buschur's


John

 

fyi, I run a hta 86 on my car. I do have a built block, but I am currently on the power level that would still be safe for a stock block. My car on strictly pumpgas put down 470whp and 398ft lbs of tq on buschurs heartbreaker. You wont get a more real dyno number than his dyno lol.

I would run this on stock block all day! I run a 2.3, plus my housing on the hta86 is a small .63 due to being bolted to an original ams t3 style kit. BUt the spoolup with the combo if the .63 housing and extra displacement is amazing!

It will be sort of laggy, but certainly not laggy enough for the streets. Its just a plus that it wont hit till higher in the powerband. Its things like that that keep the stock block from throwing rods!

 

Just out of curiousity, what is your spool/powerband looking like? Also, are you on pump or e85?

The evo I recently bought currently has a GTX3076 with 1.06A/R and ATS t3 kit. The car spun a bearing and the block is bad, so a stock 2.0 longblock will be replacing it. Main plans for the car will be dd and track duty, power really is not one of my goals, more or less response and driveability on the track. All of which leads me to the debate of swapping to a .63 A/R.. I plan on tuning the car on low boost regardless, would swapping turbine housings make a worthwhile difference? Excuse me if any errors/missing information, new at this

 

A 1.06 rear would be crazy laggy on a 2L! I'm running a GTX3071R with a .82 on my 2.5L skyline on E85 and full boost (25psi) is about 3800 but its internally gated on a stock manifold... Problem with going to a .63 on a GTX3076 is the hotside will probably choke before the compressor is maxed out.. You will need to run a good sized gate (or 2) to keep pressure in the manifold down or at least wmi or E85 to keep egt's down

 

The GTX3076 levies a substantial spool penalty when used at moderate power levels (e.g. 500whp), which is what a stock block can be expected to reliably withstand. As is, this turbo with .63 A/R T3 turbine housing will support 600whp on E85, which is comfortably beyond anything you should be seeking. The 1.06 A/R T3 housing on the turbo presently reflects an inexperienced decision by its previous owner, and is doing you absolutely NO favors where spool and response are concerned.

Drop the 1.06 like a bad habit and go to the .63. It won't be any world beater where spool and transient response are concerned, but it will markedly improve what you have at this time. Also, you will need to retune this car, so you should be researching the most competent EVO tuning you can find in your region in the meantime,.

 

I would probably add a Buschur Ported Intake Manifold and Throttle Body to that list.. just to maximize your gains on the stock block.. HTA86 is a great turbo.. just keep the torque low and your stock block will stay happy..

 

I appreciate your input, it has helped me narrow down my options. I guess the previous owner wished to go about a unique route.. At this point I will either swap to the .63 or swap the setup for a stock setup plus cash altogether. As for late spool and slower response, I suppose really don't mind too much as it could serve learning tool to carrying momentum, unless it really is extremely laggy (Will do a search, however if anyone with a similar setup could chime in on driveability/rough spool range that'd be awesome). Listed at the top of my budget since the beginning of the build has been the (dual 91/e85) tune, which was also the first priority in researching so that region is covered. Reason for posting in this thread is because I figured my previous post is similar to the topic, if it is however irrelevant or thread jacking, let me know and I'll take it to PM.

 

I hit full boost by 4500rpms. Im on pump now still.

 

This is an even better idea for you, as stock frame turbo options are twinscroll configurations that spool much better than an open .63 A/R T3 with superior transient response, and deliver the peak power you're after with far better power under the curve.

 

I'm looking to build the car in stages, hopefully by next winter I can go and build the block. I was looking into the ETS TwinScroll HTA 3586. If not I might just go with the fp black and do a turbo upgrade down the road.

 

The FP Black makes good sense. Stock frame turbo options support power ranges through 600+whp with suitable fuels while delivering more power under the curve and superior transient response than aftermarket T3 based options, and at roughly half the overall cost. There are a great many out there who would have been better off, both power wise and financially, with a stock framed setup than where they are now.