New Injectors and Rear Calipers

Bumblestook is 22 years old now and it's still got the original injectors. I doubt the spray pattern is still good so I had originally though about getting the injectors bench flow tested and cleaned. However, I was able to source some brand new Honda S2000 injectors from Japan and I've said to myself that for as long as I can source new parts from Honda, I'll do that and hoard my old parts as spares. These injectors are impossible to find from the US but I was able to source them directly from Japan for less than what dealers here charge for them. 

Fresh OEM Honda S2000 Injectors

New injectors on the fuel rail

Fuel rail going back in

Last year I also noticed that my rear calipers were starting to bind a little especially on initial laps of any track day. They've seen better days and probably could use a rebuild but same story here, I was able to source some brand new rear calipers from Honda and that seemed like the smarter thing to do so I could keep the old ones as spares.

1 of 2 new rear calipers

Driver side rear caliper installed

Passenger side rear caliper installed

Of course if you're replacing calipers you're going to have to bleed the brakes so I went ahead with a flush with some fresh Motul RBF660 brake fluid.

Fresh brake fluid

Thanks to SJF for getting this done for me today.

Maintenance Update:

Mileage: 65,179

- 2 new rear OEM calipers

- 4 new OEM injectors 06164-PCX-010

- Motul RBF 660 brake fluid flush

Voltex Swan Neck and Houndstooth Interior

I ordered a 1550mm Voltex Type 7 Swan Neck wing for the S2000 well over a year ago and it finally arrived over the winter. I got a spare trunk to install it on and dropped it off with Eric at K2 Autobody so he could paint it. While it was there I decided to also repaint the rear bumper and rear over fenders which had suffered some pain peeling and pitting over the years. Unfortunately the paint pigments have changed over the past 7 years so even though they have the formula for my paint (Rio Yellow Pearl), it doesn't actually match so they had to adjust the formula to try and match it as best they could. It's a good match but it's still a tad lighter compared to the rest of the car but I think it still looks fine. 

New Voltex wing installed

Reinforcement plates riveted in place (1/8" rivets)

Another angle of the rear wing

While the body panels were out to get painted, I also dropped off the cushions for my Recaro Pole Positions and door panels to have to reupholstered. I had it done 7 years ago in yellow/black Tomcat pattern which is very JDM but I was never really super happy with it because the color was a bit too light. Last year I had the seats in my Cayman reupholstered to yellow/black houndstooth and not only did I really love the pattern but it was a better match to the Rio Yellow of the S2000 so I took this opportunity to have the S2000 interior redone as well.

Houndstooth reupholstered interior

Houndstooth reupholstered interior

Houndstooth reupholstered interior

Since I removed the J's racing front tow hook as part of my front splitter install since the tow hook interfered with the proper mounting of the splitter mounts, I picked up a Raceseng tow strap instead and installed that.

Raceseng tow strap

J&L Oil Air Separator

After discovering oil in the PCV when I had it replaced recently, I decided it might be a good idea to put a catch on the Jeep to prevent that stuff from getting back into the intake. I picked up a J&L Oil Air separator which was an easy enough install. Reviews seem pretty good. I'll see how much oil this catches at the next oil change. 

J&L Oil Air Separator installed

Hard line disconnected

Catch can plumbed in.

Racebred V2 Quick Release Splitter

In the end of 2022 I picked up a Racebred V2 Quick Release splitter for the s2000 just as I went to order my Voltex wing. I didn't want to install the splitter without the wing because of aero balance so I waited and since the wing took over a year to arrive, here I am now 15 months later installing the splitter.

Splitter installed

It's a pretty nice piece but the bracket is designed to go flush against the frame and those pieces are actually angled up slightly so if you install it out of the box the splitter is actually angled up a little which isn't what you want aerodynamically. I had to shim it using 2 x 3/8" fender washers at the front to get a slightly downward angle instead.

Now correctly angled

Removed center under tray and trimmed fender lines

The center under tray had to be removed and the fender liners trimmed so it wouldn't get in the way. While the splitter is "quick release", there are two bolts on each side holding it in place for added security so you need to remove those to pull the quick release pin. It's possible to do through the fender liner with the wheels removed but I wouldn't really call that "quick". 

Bumper reinstalled

It looks pretty decent and functional installed but because the CR lip isn't flat, there's a gap between the splitter and the bumper towards the center. This is not ideal from an aero perspective so I ordered their air dam to go with this. I'll likely have to remove the bumper again anyway since I noticed a but of the bottom part of the lip hits the splitter bracket so I'll have to trim that and I'm debating removing my J's racing tow hook since it's sandwiched right now between the frame and the bracket and I don't think that's ideal. 

Timing belts and fixing leaks

Looking back at the records, looks like the timing belts were last done 5 years ago. That's a "long" time for a 944 so that was on the top of the list of maintenance items I wanted to take care of. I also found no evidence of the motor mounts ever being replaced so I got a new set of OEM Porsche motor mounts. You want to stay OEM on the motor mounts because they are fluid filled and provide the right amount of damping. The cheaper aftermarket mounts die very quickly especially the one that sits closest to the header from the heat.

Service work done at Hybrid Motors

I dropped the car off with Marcelo at Hybrid Motors last week and they were able to turn the car around in less than a week. I had them source the timing belt, water pump and new rollers and while they were in there I also had them replace the motor mounts. Good thing I did as they were seized up there and worn pretty badly. They appear to be the originals from 1991 so they were long overdue. I also continue to see both an oil leak and power steering leak from the car before dropping it off so I had them take a look at it. The power steering leak was coming from the hose going out of the power steering reservoir. This is a common failure point so a new hose was installed.

New power steering reservoir hose

For the oil leak, it turns out the factory oil cooler was leaking. We could've tried just replacing some seals but instead I had them acquire and replace the entire oil cooler to make sure everything was just new and perfect. If the outer seals are going, you don't know what else could fail internally and cause coolant and oil to mix. 

New OEM oil cooler installed

Another common wear item is the cam chain guide. I had them replace that as well along with a new valve cover gasket to make sure I don't get any leaks after that work gets done. This is nice preventative maintenance as cam chain guides are made of some kind of hard plastic that can disintegrate over time. Not something I want in the engine. 

Old cam chain guide looking very tired but intact

The engine is humming along smoothly now with no leaks to concern myself about. I know I'm going a little overboard but I do treat every car I own as something I might own for a very long time so I try to make sure they are all brought up to proper maintenance rather than wait for things to fail. 

Old oil cooler

Old rollers and seals

Old motor mounts, timing belts, PS hose

Maintenance Update

Mileage: 96,660

- New OEM timing belts

- New OEM water pump

- New OEM timing belt rollers

- New OEM oil cooler

- New OEM valve cover gasket

- New OEM cam chain guide

- New OEM motor mounts

- New power steering reservoir hose