BB 2002 S2000 to S2500 Stroker Build
Hi and thanks for stopping by! :hello:
I've been on S2KI for about 13 years now and I have loved interacting with this community over the years. My old username is OVER9000! if anyone remembers me. I wanted to document my journey with my S because it has been a car that has been very impactful in my life. I'm not going to lie, this is rather daunting to me. There's a lot that I can share, but I'll try to just stick to the basics and come back to this post to add some more backstory and color. I'll start off with a build sheet for my S as it sits today and then have its history below that. Engine - F25C Stroker (Bored & Stroked F20C)
The Journey I bought my 2002 Berlina Black S2000 with 66k miles in 2010. I believe I am the 6th (and hopefully final) owner. I daily drove my S for about 10 years until 2020. I have had so many journies and learned so many lessons from this car. It has taught me about patience, self-control, responsibility, dedication, persistence, and more. I got my S when I was 18, so it has been with me through some transformative years and has undergone some transformations itself. My goal with my S has been to maximize enjoyment with an intent to prioritize function over form. I really wanted to get to know the car in its stock form, so I attended many many autocross events while I was in college. Sometimes twice a month. That was so much fun and a time in my life that I look back on fondly. I have also made it out to a few HPDE track days and plan to attend more once I have this 2.5L stroker build broken in and sorted out. In 2019, with the help of Inline Pro, I set out on my journey to build my first 2.4L stroker F20C. It was such a whirlwind of new experiences that required me to learn many new skills and do more than I ever thought I was capable of doing. It was my first time wiring and setting up a standalone ecu, so that was a challenging feat in itself. I made it through it and learned some valuable lessons along the way. Unfortunately, in early 2020 I had to retire the 2.4L stroker motor after only about 1,000 miles due to cylinder scoring and loss of compression on cylinder 2. This was rough and weighed on me heavily. It was all my fault too. I tried my hardest to be kind to myself and take it as a learning experience. I'll come back and add more info on what caused the damage. F24 Stroker Engine Removal & Disassembly - Album Earlier in 2023 I decided to pursue building another bored and stroked F20 engine with any parts that I could salvage from my last stroker. The crankshaft and rods were able to be reused, but it needed new pistons. I had used a spare F20C block for my first stroker build, so I used my original F20C block that came with my S from the factory. I sent that block to Inline Pro and see what they could do. The scoring in the cylinders was pretty deep, so they had to install sleeves. I went with their closed deck iron sleeves and discussed options for bore size. I weighed my options and decided to go big with an 89mm bore and 89mm pistons. This required me to send in my cylinder head to have the combustion chamber bowl machined to accept the taller and bigger pistons. John at IP is awesome and offered to do this machine work for free, which I am so grateful for. I returned the favor by going ahead and buying a set of IP dual valve springs with titanium seats to have installed on the head while it was there. I took delivery of the short block and cylinder head in late July and started assembling the engine in August. I have had a few setbacks and lessons learned, but it is all coming together. While I was waiting for the block and cylinder head to be worked on I started a side project to tear down my original transmission as well as a spare rebuilt transmission to combine whatever parts were in the best condition. I managed to find a BNIB OEM second gear set, so I decided to pull the trigger on that and installed that in the refreshed transmission as well. I have spent a lot of time cleaning and restoring old parts as well as making sure any repairs are done right. As of November 2023, the engine and refreshed transmission are in the S and ready to be started up for the first time. I will post more updates as I work through inevitable first startup issues and get the engine running smoothly with the Elite 1500 ecu. Feel free to ask any questions below and remember to enjoy your S and have fun with it! ***Pics Start Here*** https://cimg1.ibsrv.net/gimg/www.s2k...401cd09bfb.jpg Finally on the ground after being on jack stands for over a year! https://cimg2.ibsrv.net/gimg/www.s2k...902c8fbd35.jpg https://cimg1.ibsrv.net/gimg/www.s2k...05891d9703.jpg https://cimg0.ibsrv.net/gimg/www.s2k...d2fced3aa6.jpg https://cimg0.ibsrv.net/gimg/www.s2k...2ce4e35e33.jpg One of my HS senior pics when I was 18 shortly after getting the S in 2010 https://cimg1.ibsrv.net/gimg/www.s2k...e2e4a85138.jpg Back when it was clean and stock with 66K miles on it. Pic taken shortly after I got it. https://cimg2.ibsrv.net/gimg/www.s2k...2a131d35a7.jpg I wish it still looked this fresh. |
11/10/23 F25 Stroker Build Update: It's so close to running! I'm in the troubleshooting process of finishing up this build and I'm so ready to be over this hump. I've made a lot of progress in the last few weeks though.
Over the last month I've cleaned the engine bay a bit, installed the new engine in the S, got all of the electrical connectors and hoses connected, installed the refreshed transmission, and replaced hardware where necessary. This week I got it off jack stands for the first time in a year and it's 99% ready to be fired up. I have been diagnosing electrical issues and updating the Haltech software and settings for the last few days.
Hopefully that takes care of this issue and allows the S to fire up! If anyone has any other ideas or suggestions feel free to let me know! https://cimg7.ibsrv.net/gimg/www.s2k...a0c462e936.jpg https://cimg7.ibsrv.net/gimg/www.s2k...e8a949d5ff.jpg |
Hope you make good power! Whats your estimated compression? Also you need to run a 3 inch exhaust.
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