I have had the Harrop S/C fitted by Harrop for only a week now, so i can only comment on initial impressions.
As shown in the videos it almost looks OEM N/A if it wasnt for the "Supercharged" lettering on the top of the unit, at least to those not knowing what to look for.
In car there is zero whine, its completely stealth which avoids any unwanted attention which i am happy about.

I went for the 90mm pulley (95mm was std), which i was told provides 10psi at 7000rpm approx.
According to the dyno sheet provided i'm getting 280nm torque at 5000rpm through to 5750rpm and just under 180kw at 6750.

For me, i am shifting at around 6000rpm which feels like its sweet spot, at least for traffic light take offs and general road fun.

I have an auto trans with an Invidia Q300 catback and 45000klm of the clock, no other power train mods.
I am lucky enough to live not far from the main Harrop plant so the decision to go with them was easy. As far as a company to deal with, i cant praise them highly enough, very professional and happy to answer my most basic questions. They even contacted me a few days after install to make sure i was happy with everything.
Mileage seems to have suffered a little but that may just be a result of my now extremely heavy right foot. ;)
I have discovered that torque is a drug and i'm now an addict, so already considering the E85 upgrade.
Cheers

Good to hear you're enjoying your kit! Can't wait to get mine installed. I will add you to the owners list.

When I get mine installed on the 24th I will report back to you.

Yes, the Harrop kit has a bypass valve.

Was there feedback that 90mm is still fine for stock internals?

So here's a snag... Got this email from Neal at The Racers Line. He's doing the install and Harrop sent this to him regarding the availability of the kit today. Looks like I'm gonna have to wait a bit longer :cry: :

"We’re currently experiencing some high demand on 86/BRZ SC kits presently and we’ve got a backorder situation where we’re currently waiting on our casting facility to supply product for us to turn into completed superchargers. We estimate at this stage it will be likely that the first opportunity for me to supply a kit will be either late this month or early September.

Please pass on our apologies to your customer for the delay, however rest assured this is a temporary stock issue.

If your customer is able to wait, we’ll be able to send you a sales order for confirmation as soon as possible."

Bummer, but good on Harrop for good communication and transparency. I'm actually surprised that they have a shortage since I thought they do their casting in-house like Edelbrock does, so they would've been fully aware of the orders coming in.

Yeah so far they seem to be a pleasure to do business with. I have Neal at the Racers Line doing the install and back-and-forth to Harrop, so I'm not directly dealing with them. Not sure as to why there would be a supply shortage :iono:

Sweet, I may just drop by during the install to spectate (I work nearby the shop sometimes). Keep us posted :thumbup:

Yeah you should! Always good to shoot the shit and stuff. When we get notice from Harrop that the kit has shipped Neal and I will figure out a date and let you know on here. I plan on taking pics of the install and posting to here as well.

Yes Sh1FTy, during discussions with sales I'd specified I didn't want a "grenade". When they told me their tuner had suggested the 90mm pulley I questioned it and was assured it would be fine. I guess every engine can be different and shit can happen but I know through some local forums of a couple of guys running this setup and no reports of issues.

Great to hear Neal is getting his mitts on one of these. I'm waiting in the wings to hear how things go regarding install, tuning, etc. I'm praying the sti strut bar will be able to be used post install to keep things as is. :thumbup:

I'll keep you posted. The STi strut bar should be ok. The Harrop clears the Cusco with a couple inches to spare and they are about the same height.

Thanks for that Andrew, really useful.

(Without wanting to use and abuse you....) do you think if I did the full exhaust and took the whp up to around 270, that would be as safe for the stock internals as keeping the stock exhaust on? It would be running the same pulley/boost so I assume that's the same amount of stress on the stock engine......

Yup I'm a victim of this too - my install has been delayed twice. New install date is the 20th.

It's not the peak whp that's the issue. Also, go based off info from Mark and the well quoted info from @Matt@Cosworth.... 270 peak who is not an issue.

Ugh, bummer! BTW I will add you to the owners list as well. Exciting that several of us are installing this kit concurrently!

Haha, must seem like I'm asking everyone the same question until I get the answer I want.....

I will speak to Mark about it. But there seems to be a decent amount of expertise/experience on this forum too. An extra 20whp without loading extra stresses on the stock internals is quite tempting. Probably fails the HP vs £££ test, but would save some weight too.

Just after opinions. I know that ultimately there are no safety gaurentees and that's what comes with the aftermarket world I'm getting myself in to.

Yeh it is. Not that I've been to any car meets, but it seems like there is a novelty factor with this kit which I wasn't aware of when I got it.

It's more common here than in the US, which is unusual. Abbey seem to have sold well with them, I guess the Edelbrock seems the obvious TVS1320 choice if you're in the States, CARB tune and no need to import. We don't have much of a choice about importing and the E-Force has yet to make it to our shores AFAIK. I was considering the Edelbrock for that reason.

I stumbled on this kit and I love how the cooling is built into intake manifold. I am planning on buying all of my parts to do one giant build in a few years after my warranty goes out. I like this, the Edelbrock, and the Cosworth. I want to learn more about this kit.

If warranty is what you are worried about do the Edelbrock. 30000 mile powertrain warranty.

I am going to keep the car stock until the warranty is up. I want my Son to be old enough to build it with me.

Hi Guys long time lurker on forums. My car is booked in with Harrop on the 29th to get the kit installed and with the oil cooler. Can't Wait!

Congrats Mate, you will love it.
What size pulley you going with?


Haha, just realised, I'm dropping mine off on the 29th as well for some MCA coilovers!

At this stage the std 95mm, looking at your numbers you seem to have pick up some more torque going with the 90mm, might ask them about that

What MCA are you getting? I have had blues for 7 months now with my daily , no issues

I am getting the X series (X-C), the extra comfort ones. I currently have a set of Pedders eXtreme reds but the dampening is too hard for me. The slightest lump in the road almost knocks the fillings out of my teeth.

Now this is news! Awesome to hear that you will be stocking these products and even more awesome to hear you'll potentially be doing some testing on the SC! Good stuff Neal!

kuczynskika, I hope the "near future" is soon mate, the suspense must be killing you! :drool:

It is killing me! Haha the near future is as soon as Harrop sends the kit. Hopefully early September if not sooner.


Sent from my iPhone using Tapatalk

3k problem free miles.

Mike at Moto East tuned the car and everything is running great!

I did put in new sparks, clutch, and trans/diff fluid when doing the install.

Whelp, I guess I'll have 2 reasons to visit Nevada around October. My buddy stationed there, and your Harrop supercharged car :p

Good to hear. 3k miles trouble free miles but.... are you lusting for more power yet?

Mine went in to be fitted today - I'm getting the clutch and the trans/diff fluid too, but no new sparks - how come you did these if you don't mind me asking?

Edlebrock got their CARB EO numbers. Harrop should be happening too. Just a matter of time I bet.

Hell yeah. The SC will def be in by then. We can go for a ride.

I came from MR2 Turbo models where this was standard maintenance before an upgrade. I was around 43k miles (69000 km) with a fully aspirated setup at the edge of the local AKI rating allowed. The plugs looked great (Thanks Circuit Motorsports for that great tune!), but I wanted with the engine torn apart for all difficult maintenance completed before the scheduled maintenance was due. Used stock plugs for the replacement too. MotoEast says the tune looks great on 93 AKI as the system stands. My oil temps are not cresting over 83 C with hard street driving, if that helps any. I want to log at a track and dyno soon for you all.

Totally want more power! I just know that I'll get myself into more trouble than it's worth to give my right foot that liberty. Several times I've had to glance down to cut my burn short from zero kmp/mph to limit after noticing a Sheriff or Constable cruising to an upcoming intersection.

Clutch Masters FX350 with the lightened flywheel included is too much chatter and lack of rotational momentum for most drivers. Several friends immediately stall the car out without the extra forgiveness. A hunting idle is common if you dont have good throttle control and ease it into idle.

After doing several fluid changes on tracked WRX and WRX STI for friends, I don't want to take a chance on my rear diff or trans receiving less than optimum lubrication.

So I was thinking of keeping this idea to myself until a reveal, but considering the fact that I am going to wait for CARB approval and for a house purchase (per wife) before getting the kit, I figured why not pass on the idea and have someone else figure it out. I wanted to create custom water pipes for the coolant lines that route against the body of the engine like how the other pipes on the car do. Specifically, to route two lines to the right and two to the left to create a cleaner look.

I wish I could go through Subaru's parts bins to find pipes that would work. If someone gets to this task before me please post pics and parts, but if not, don't hold your breath, but that is the plan, and I'll post what I do.

Maybe it's too soon to ask but can you expand on this more? Do you know how much track testing they did? I prefer the performance from positive displacement blowers, but the main issue for any track setup is how it handles heat. I see the dual intercoolers up top and wonder about their capacity and what kind of real world IAT temps are seen on tracks when being punished. I'm actively looking at different setups. I see how this is different than the Edelbrock. PD compressor reliability is not an issue... but I don't see enough about how they are handling the heat to convince me this will work at Sebring in the summer.

Maybe these are better questions for those guys so they can share what they really did to test this setup.

Thanks.

The big advantages to the Harrop SC Kit over the competition is the intercooler design, and being able to assure IAT’s on hot days is a massive priority for them.

Here is a data log from lap 5 of a 10 lap time attack session, so everything was at its peak temperature. They are running a built motor now, with more boost then the standard pulley, so even more heat.

http://i208.photobucket.com/albums/b...psbzqc9gld.jpg

".....we have an engineer devoted to keeping temps under control be it oil, water, charge air or thermatic soak, so we do consider ourselves well versed."