D-Rob

Over the years, we have had the opportunity to work with a few individuals in the supercharged K-Series community that push the boundaries of convention.

Saturday, we were blown away (no pun intended) by the results of what would have been considered impossible just a few years ago. I remember in 2008 when people said 350whp was an impossible ceiling for a blower-only K-Series engine.

Tim's Accord came to us from the midwest Saturday for K-Pro tuning on his built K24 powered by a Magnuson 2,300cc twin-screw blower, complete with a custom intake manifold, a HUGE water-to-air charge cooling system (that includes a gargantuan trunk-mounted reservoir), and E85.

The results were astonishing. Never have we encountered so much boost pressure on a supercharged four cylinder application, nor have we seen such efficiency from an aftercooler system. IAT's started in the low 70degF range, and through a 7-second ramp test, peaked only at 115deg.



Adding several bags of ice to the large trunk-mounted reservoir resulted in sub-ambient starting temperatures (the dyno logged 62deg as ambient in the room), and finishing temps under 100deg. It was able to maintain these temperatures for about an hour. After the pull, the temps would quickly drop right back down to 39-43deg until loaded again.



For those unfamilar with Roots-blown engines, temperature control is the key to making big power. The blowers themselves are essentially giant heat pumps, so to see charge temperatures under 100deg with almost 30psi of boost pressure is incredible.

Sleeved K24 (89x99)
11:1 compression
IPS KSC '11 cams
Magnuson 2,300cc blower
Custom manifold (Xcessive runners, HUGE aftercooler core sandwiched between the blower and the runners)
Custom aftercooler setup (trunk mounted tank, LARGE heat exchangers)
Custom inlet
Custom header
3" exhaust
Donkey Power Injection 2,200cc injectors
Walbro 450lph pump
K-Tuned 90mm throttle body
Custom 4" intake
Water/methanol injection
Boost-by-gear
Hondata traction control

Tuned by Derek Robinson with Hondata K-Pro on E85 @ 29psi

623whp / 471wtq were the final results. Without ice in the cooling system, it still produced 604whp / 447wtq.



The torque curve is absolutely insane, and to be honest, a bit scary to see at first. I have never heard of a Honda four cylinder making almost 400ft-lbs of torque as early as 3,000rpm. I don't like to talk about 'records,' but I think if I were, this would be pretty close to the most powerful Roots-blown Honda four in history if I had to guess. If someone knows of any higher, speak up!

Here are some photos of the setup/car. It's literally the coolest thing I have tuned in ages; a built, monstrously-supercharged Accord sedan.





Thanks!

AZ_CIVIC

iTrader: (1)

That is pretty damn cool!

GEN2 LS

iTrader: (3)

Wow talk about torque, great numbers Derek! Any vids?

mar778c

iTrader: (1)

Saw this on Facebook. Tremendous results.

Boost4Breakfast

Props. Out of left field we have a blower back in the game. Impressive results and a simple set-up! Guaranteed that this build will serve as a model for a new blower-driven trend in Hondas. Soon we'll have 2.6 K's with 3.4 crushers knockin on 1k. Going to be exciting....

Schister66

Holy ****. That's a serious torque curve for a 4 cylinder.

NotARaCist

iTrader: (1)

That coolant tank in the trunk can't be light...how much weight did that add? At least it has that beautiful torque curve to pull the weight.

DC_Legacy

Amazing, seriously!

Aradin

I'm blown away by that torque curve. That thing must be a blast to drive.

LTCxD2B

Insane1!1!1! ... Must feel like a muscle lol

m4xwellmurd3r

Holy crap, near or above 400ftlb from 3k-7.8k??? That things a friggin beast!

DA-NINE

How can you post this without a dyno video???


Car is baddass and a sleeper in an accord sedan chassis. What kind of transmission is behind this torque monster

Geis

Jesus christ this is nuts. I'm with NotAracist though, the water tank + the supercharger setup must have added a considerable amount of weight. But who cares lol

DC_Legacy

Amazingly powerful and flat torque curve to give any Rotrex owner a run for their money but that roots blower is bigger than the kit SC Magnuson uses for the 6.2L GMC/Chevy 1500 trucks......its's displacing nearly the same volume as the entire engine displacement it self!

Imagine wheel spin is a constant without the Hondata TC however who would build something this torque prone and not have the intention of using this on a track with slicks....

Would also be a blast driving through the mountainous hillsides of PA too.....just would hate to lose traction during icey/rainy weather...

V-SPEC 1

That's awesome.

SPOOLINmatt

Im all about some supercharged street madness. Turbo for the track of course.

CD8

He wants 305/30/18 tires!!!

effin

iTrader: (1)

Wowzers. Good way to start the year off! I want to see a dyno vid!!!! Woot woot

Schister66

Dyno vid or BAN!

But seriously, you can't leave us hangin like this...

D-Rob

He's got a bunch on his Instagram account.

timot_one

BlazedD

iTrader: (17)

Congrats, Tim!

Kaan

iTrader: (3)

x2

now go get some groceries and pick up the kids!

crazyjetsfan22

iTrader: (5)

D-Rob

Awesome numbers!

Need some in car Vids of this in action Tim once your trans is set up!

diatibe24

Why?? Am I the only person who is on the fence between this is bad *** and at the same time pointless.

Wouldn't that be down right dangerous to drive (In the bad way)? It just seems kind of pointless to go through all that for just a dyno queen.

timot_one

Thanks for the comments everyone. I tried posting something last night, but something goofy happened and it erased my post. I'll give this another shot.

So, to address some of the comments and questions. The water tank in the trunk is about 25-30 lbs and it holds 10 gallons of water, which would weigh in at 80-85 lbs. All in all, the added weight isn't noticeable considering the amount of tq this set up makes. It's also a full interior Accord sedan with an audio system. I would have used a different chassis of weight was a concern. This car is really meant to be a freeway bruiser to take people by surprise. I'm planning on attending a few standing mile events this year to see how I like it and if I want to get more involved.

My transmission is a stock TSX with a LSD. It was my back up transmission after had knocked off all the teeth from 4th gear. I had booked a retune with Derek and didn't want to cancel my appointment, so I used this trans for the dyno and to work out any bugs I may encounter with this new set up. I'm building another transmission with a PPG synchro 1-4 set up. That should hopefully be ready in before the weather gets warm out here. My street tire set up will probably be some 275's, but I do want to get a set of 305's to put on a pair of wider wheels for track events and additional "fun".

Unfortunately, I have only driven it once since I brought it back. I was taking it easy because it's a fresh motor and I found out how fragile my gears are with this much torque about a month ago. We got some snow last night and they don't really do a good job of cleaning up the roads in my area. There are a few small bugs that I'm also working out right now, so this gives me some time to correct them.

For those that are looking for a dyno video, I posted one on my Instagram. I have the same screen name as I do here. I believe Donkey Power Injection also posted a different video that I sent them. As soon as the roads are clear and the bugs are worked out, I'll have a few more videos posted. Thanks for everyone's interest.

I want to thank Derek for posting this. I'm not active over here as I am other forums. I'm grateful for his interest in my build and the time he took to tune my car and answer all of my questions while I was building this set up. Hopefully there will be more updates in the future.