05DC5s K25 K10s Build Thread a Twisted Loop Racing Production

Special thanks to:

Blake Automotive

Sammy

Nikos

Ed Senf

Moseley

Chunky

ASP and Stefan

K20a.org

MCP

IPS

ERL

Endyn

King Motorsports



All good stories start somewhere and mine started like this. I was browsing the forums one day and came across an ad for a $2500 k24. 12.5:1 Compression, rods the whole assembled bottom end and decied I wanted to upgrade from my setup at the time of just bolt ons cams and a tune. This was the beginning of the sickness, no symptoms yet but the fever would soon show.

I began planning out what I would need to do to complete the swap and had small reasonable goals at the time. I wanted to just put my cammed head on a high compression 2.4 block and enjoy the added tq and hopefully break 250whp.
Then I started thinking...hmm...my Toda header would be far from ideal for a 2.4 and prolly won't fit well so I really ought to get a custom header that would suit my build. After trying to get in touch with another popular custom header maker with no success I contacted ASP and placed my order.

Doing some research I knew that since I wanted my horsepower to peak at 8100 a 4-1 header was the way I wanted to go along with that I got a reverse cone/megaphone with a turn down so I could unbolt my exhaust at the track. Turn around time was awesome I had my header in a little over 2 weeks even with me calling for a turn down attachment at the last minute. Thank you Stefan!



Now I was begging to feel a little feversih. I had a 2.4 high compression block on the way with a proper header for it and I was going to use Toda cams? I began to question if that would really give me what I wanted and since I now had a proper header why wouldn't I get proper cams...so I purchased a set of IPS KME cams to really give me the synergy I had from my basic 2 liter build. Now surely my 250whp goal can grow to 260.



The fever grew... but I have a fat pig of a car...this is an RSX not an EG and while 260 will be fun and I am sure I will love the tq I need every bit I can get cause I mean 700lbs well it's a lot. So I decided that a ported head would be sweet for my build it's going to make me hold onto tq longer and perhaps if everything goes well I could reach 270...remove a little weight and thats 10:1 power to weight. Surely this is a great idea so I ordered it.



Wait! Now I've messed up. The KMEs are meant to go with a stock head, 99mm stroke and I just ordered a ported head so now I am beginning the spiral and ordered parts that are making my “upgraded” parts obsolete. Quite a sickness this obession has become. I changed my order and sent back my just received KMEs to get a set of K10s.

Full on fever has set in and I am delerious. I contacted Endyn and sent them a brand new RBC to be ported for a K24, I ordered a set of Mugen MF10s, a Skunk2 70mm tb to go along with my ported RBC, a carbon fiber hood, a deka battery, hytech oil pan baffle and since I found out I had a base model injen cold air intake I replaced it with a type S version. I had my ASP header ceramic coated too.




A bit of time had passed and I still didn't have my block but as my luck would have it I got offered a deal to upgrade the K24 to an ERL sleeved 89x99 K25 for little more than the cost of a set of rods and bolts. Obviously I took the offer. The extra bore from the 89mm will go nicely with my new K10s.



Now since I had been waiting on parts to show up for such a long period of time the shop that is primarily a regular service shop had gotten busy and since my project wasn't really what they do it got back burnered a bit but the main tech and the shop owner have been good to me for years and have become friends so they worked through it with me and eventually it got done.

Dyno day came and it was raining so I was really bummed out about that and concerned I would be dissapointed with my numbers. Apprehensively I watched as the car came to life and the power began to climb. Eventually resulting into 290/204. While It wasn't the 300 number I hoped might happen I was still pleased and the car sounded sick.

Build Specs-

Engine Block:

Erl 89mmx99mm Sleeved Block
K20a.org Rods
Wiseco 12.5:1 Compression Pistons
Stock Crank

Head:

Ips K10 cams
PRB Ported head for K10 cams
Supertech Flat Faced Valves
Supertech Springs and retainers

Bolt-ons:

Endyn Ported RBC w/ Hondata IMG
Skunk2 70mm TB
Injen Cai
ASP 4-1 header with reverse cone/megaphone
Kteller 3in Exhaust

Videos:
Dyno- http://www.youtube.com/watch?v=23PS9Eg4cCE
Block- http://www.youtube.com/watch?v=q4dxRLvpwWg

 

Nice build. Weird, id expect 300whp with the parts list you listed.

 

Nice numbers, what are the specs on those K10 cams?

 

Thanks man. I will have to get back to you on the specs on the cams.

 

wicked..

 

sick! just plain sick! good job on your built!!!!