Sunday, January 29, 2017

Ready for the 2017 Season

Usually Bumblestook hibernates all winter long but the relatively good weather we've been having has allowed us to complete all the modifications and prep work for the 2017 racing season well ahead of schedule. First order of business was to get some fresh fluids in there.

Oil and Transmission fluids changed - 1/29/2017
While working on the car last week we noticed that the exhaust flex bolts had rusted quite a bit so I opted to replace those now since I was ordering some parts from Honda anyway.

Replacement exhaust flex bolts - 1/29/2017
Exhaust flex bolts to header replaced - 1/29/2017
Finally, we set the sway bars to the settings I wanted as a starting point for this season (1 hole from full stiff in the front and full soft in the rear). We also did the first alignment for the season. Since I have more tire and slightly wider track up front, I decided to reduce the front camber a bit but leave the rest the same to keep the general balance. There will be undoubtedly many more alignment adjustments throughout the year but I think this is a good starting point.

Front:
-3.4 camber
5.2 caster
0 toe

Rear:
-2.5 camber
0.06 (1/16") total toe in

Ready for alignment - 1/29/2017

Alignment specs - 1/29/2017

Big thanks to SJF Performance for getting all the work done before the early season rush. Bumblestook is ready for the first event in 6 weeks where we'll be able to test all the changes.

Saturday, January 21, 2017

New ATS Diff and Replacing a Bad Knuckle

Last year we identified additional items that needed to be replaced over the winter. The ATS diff that I had been running for the past 3 years was still working but the clutch packs were starting to slip. Rather than have it rebuilt, I opted to send Lupa's spare OEM diff housing over to Karcepts and have Brian install the new ATS Spec III Type DD LSD in it. Since we had a break in the weather this weekend, SJF Performance installed the replacement pumpkin as well as replaced the passenger side axle with the matching spare to the driver side axle that broke during Nationals as a precaution. We also noticed that one of my rear diff mounts was installed backwards so we corrected that as well.

ATS Spec III Type DD LSD in AP2 diff housing
SJF Performance - 1/21/2017
Passenger side axle replaced - 1/21/2017

SJF Performance - 1/21/2017

When SJF was installing the new camber joints last year, he found that the threads on the passenger side front knuckle were cross threaded from a previous installation. He was able to tap and fix the threads but we weren't super happy leaving it that way. I picked up a used AP1 passenger side knuckle and he replaced the wheel bearing and hub and installed a fresh set of ARP extended studs so I could keep the old knuckle as spare complete unit.

New wheel bearing - 1/21/2017
New OEM hub with ARP extended studs pressed on - 1/21/2017
Spindle, new bearing and hub all pressed together - 1/21/2017
This completes all the major mechanical work that needed to be done over the winter. She only needs an alignment and new fluids before the season starts.

Sunday, December 4, 2016

Going Wider

One thing I haven't done to Bumblestook because she was already working well was to try to go with wider tires up front to make it a square setup and increase front grip. With the significant gap we had to the Mazdaspeed Miatas at Nationals, I really have no choice but to try and extract every bit of performance I can get within the limits of the rules. Now that the season is over, SJF Performance was finally able find the time to work on this.

Circuit Garage S2000 front overfenders - 11/26/2016
We mounted the 315/30/18 Hoosier A7s on the 18x11 front wheels leaving the 315/30/18 Hoosiers on the 18x12 in the rear. I previously had 295s up front which were slightly stretched on an 11" wide wheel so the 315s are actually a better fit anyway. I technically don't need 18x12 in the rear but if I can't get the car to balance the way I want on the square setup, I'm leaving the option to go to 335s in the rear. I used to also run 10mm spacers in the front to get maximum clearance and to try and compensate slightly for the wider tire, I went to a 15mm spacer this time. To accommodate the extra tire width, I decided we should cut the OEM fenders some more and add overfenders so I picked up a pair of Circuit Garage S2000 front overfenders. Sadly these overfenders cost about as much as pre-made wider OEM style fenders but since those aren't Street Prepared legal, I had to go this route instead.

Make more room up front - 11/26/2016
It was clear early on that these overfenders had pretty bad fitment and would probably take a body shop a fair amount of time to mold properly to the car. Rather than use the entire overfender, we decided to just cut them up and just use the portion that overlays with the top of the OEM fender. I had my OEM fenders previously widened professionally by a body shop so they were shaped really nicely but unfortunately they were only nice because the shop used a fair bit of bondo to sculpt it into form. Some of the bondo cracked while cutting the fender away. Not a big deal but this was definitely going to end up being a case of function over form.

Front over fenders mocked up - 11/26/2016
Since I didn't know if I'd end up just destroying these fenders after a few events I was reluctant to have them professionally painted so I found a company that sells OEM color paint in spray can from (automotivetouchup.com). They give you a can of base coat, medium coat and clear coat each of your car color. I was a bit skeptical especially since Spa Yellow is often hard to match but SJF and I were both surprised at how well the color matched (at least from a reasonable distance away). Since we were going to color match the front fenders, I opted to also paint the rear over fenders the same color after we cut them up a bit more for extra tire clearance in the rear as well.

Automotive Paint - 11/26/2016
Over fenders painted - 11/26/2016
At the last run of the final event this year, the passenger side front fender got ripped out completely. Luckily I was able to get a pair of brand new ones for a steal from Dan who had it lying around in his garage so SJF installed the new one.

New passenger front fender installed and trimmed for tire clearance - 11/26/2016
The new square setup and the wider front track is going to completely change the balance of the car. Unfortunately, the Gendron front bar and Ankeny rear bar I've been running for years now don't have sufficient adjustment for this setup so I replaced both with a fresh set of Karcepts sway bars instead. I'm running the largest front bar Karcepts makes for the S2000, 1.375" OD with 0.25" walls. For the rear I'm using the standard Karcepts S2000 rear sway bar used by the STR cars (which I also have on Lupa). SJF also noticed that the tabs on the rear subframe used for rear toe adjustment had been warped from all the rear grip so he straightened them out again.

Karcepts 1.375" OD, 0.25" wall front sway bar - 12/4/2016
Karcepts S2000 rear sway bar - 12/4/2016
After we got back from Nationals, we also noticed that the offset camber joint was leaking so we replaced both sides as well with a fresh set. I want to run Solostorm next year for data logging but didn't want to have a tablet mounted in my field of vision so I picked up an NVidia K7 Shield K1 tablet along with a RAM Tablet mount (RAMHOLTAB12U), RAM Diamond adapter (Ram-B-238) and RAM V-Base strap clamp with 1" ball arm which we hard mounted behind the passenger seat.

Tablet mount behind passenger seat - 11/26/2016
We also drained the remaining E85 in the fuel tank and put in pump gas again for winter storage. We still have a few things left to do over the winter to get her ready for next season but thankfully a lot of the major work has been completed.

Front overfenders - 12/4/2016
Color matched overfenders - 12/4/2016
Painted rear overfenders with weather stripping - 12/4/2016
Front overfenders viewed from above - 12/4/2016

Thursday, October 20, 2016

End of Year Maintenance

Lupa did pretty well this year putting down some miles. Despite not really racing her past early this season, she did go to Lincoln and we drove up to Vermont and New Hampshire to catch some Fall foliage a few weeks ago.

Driving up Route-100 in Vermont - 10/2/2016
Before tucking her away for the end of the season I wanted to make sure she gets a good once over. I took her over to SJF Performance where we change the engine oil and diff fluid. Glad to report the diff fluid still shows up as nice and clean. I then got her aligned because I wasn't sure if the alignment shifted after competition miles on concrete.

Alignment - SJF Performance - 10/15/2016
The alignment slipped a little bit but overall still in good shape. The rear camber bolts were starting to get a bit hard to adjust so we replaced the rear driver side bolt, nut and washer and will do the same passenger side next time. I also somehow gained camber in the rear despite the ride height not changing. Not sure what's causing that other than me having fresh tires but we couldn't get it less than -2.3 so the final alignment settings were:

Front:
-3.3 camber
5.6 caster
0 toe

Rear:
-2.3 camber
0.06 per side toe in (1/8" total)

I also installed the Science of Speed hood dampers, new PIAA wiper blades (18" driver, 20" passenger) and removed the Valentine One radar detector wiring since frankly I never use it. I also replaced the USB cable going from the head unit to my phone with a flat one so I could route it better and replaced the phone holder with a RAM mount X-Grip version.

Science of Speed Hood Struts - 10/14/2016

Saturday, September 24, 2016

Final event for Bumblestook in 2016

It's been a long grueling season for Bumblestook and she's performed her best this year in the 4 years I've been campaigning her in BSP. After last event I came down with the flu and was planning on not being able to make it today but thankfully I recovered relatively quickly. We took her for her final runs in 2016 with the NNJR SCCA to burn off the last remaining Ethanol so she can be filled with pump gas for Winter hibernation.

Ready for her final runs this year
NNJR SCCA - 9/24/2016
It was the most perfect Fall day. Started out cloudy with some showers but by the time we ran, the course was dry and the sun eventually came out to heat everything up. Unfortunately due to the lower than usual turn out, we were almost hot lapping the cars for the 2-driver cars in Pro class making tire and engine cooling a bit problematic. Thankfully with the temps in the low-70s that helped make things a bit more manageable.

NNJR SCCA Autocross - 9/24/2016

Hez ended up getting taken down in PAX by Jeff Hurst in Tamra's DSP RX8 but was able to take FTD of the "normal cars". I think this further extends Hez's lead into the driver's championship in NNJR and should be enough to hang onto it even if we just run Lupa in STR for the final event in late October. I think I was finally happy with the way I drove her today. Maybe it's because I've been stuck at home all week or because I just feel super relaxed but I just felt I could push her and she'd push back and all would be good. I ended up 7th in RAW and 7th in PAX. What a great way to finish up her season.

BONUS:

I got to drive Dan's 997 911 for one run today. It was fun but very different from a S2000. Not sure what I was expecting but it definitely requires a different approach to driving. I think after this car gets fully developed it's going to feel awesome. Thanks for the drive Dan!

Steguis driving Dan's 911 - 9/24/2016

Tuesday, September 20, 2016

Advans

Before we left for Nationals, the Hyperblack Advan RSII 17x9 +63 wheels I had ordered for Lupa finally arrived. Since Clyde would be making a long trip, I didn't put the wheels on until we got back. I ordered a fresh set of 255/40/17 Bridgestone RE-01Rs that I had SJF Performance mount on these wheels upon our arrival. I think it's really put the finishing touches on Lupa. I think Lupa can still look low key with these wheels on and with a weight of only 15.6lbs, they are also highly functional.

New Shoes - 9/18/2016
New Shoes - 9/18/2016

SCCA Solo Nationals 2016

Clyde drove Lupa to Lincoln from NJ and arrived on Labor Day. We had some Test and Tune time scheduled the following day and I also invited James to codrive with Clyde for Nationals. James would fly in with his dad on Tuesday. It was the first ever trip to Nationals for all three.

Clyde and James at the Practice Course
Lincoln, NE - 9/6/2016
We went straight to work tweaking the car for concrete. From my experience doing the practice course and what I felt during the ProSolo, the car would have to be set up with some slight push in order to work effectively on the competition surface. They did 3 hours of testing on Tuesday and on Wednesday, it started off with quite a bit of rain that ended up in drying conditions so they were able to get a feel for the car in all conditions. They did 2 more hours on of practice on Wednesday for a total of 5 hours.

More practice - 9/7/2016
Next day was day 1 of competition. STR would be competing on the West course. James coned his first run but was subsequently able to find more time on his next two runs. Clyde coned his first run, set a time on his second but lost it on his 3rd run for a DNF.

SCCA Solo Nationals
Photo by: Perry Bennett
On day 2 they ran on the East course where James put out the same performance as the day before with a cone on his first run and finding more time with each subsequent run finishing up in mid-pack in the very large and competitive STR class. Clyde went for broke, spun his first run getting a DNF, coned twice on his second run and then finally setting a clean run on his last run. Luckily for STR, they all managed to get their runs in before the intense rain that would wreak all kinds of havoc with Nationals this year.

Overall, we really didn't have any expectations for Nats. Both Clyde and James were new to the car and she hadn't undergone nearly the same kind of development as the rest of STR. That being said, Lupa finishing mid-pack out of 64 drivers was beyond what I could've asked for. More importantly the guys had fun at their first nationals and I expect both will be back again next year.