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Track Day 11- Streets of Willow CW - Delrin Bushings

The time between these last few track days was quite significant, clocking in at over 30 days. I generally am trying to run at least a track day a month, so this was quite the gap from that goal. However California was having a ton of rainy weather, which when combined with the Holidays meant that I had a large gap to tackle a project on the C5 I'd long been neglecting, installing Delrin bushings from Borg Motorsports.

Service / Modification Notes

This page will serve as a place for me to keep notes on various details about maintaining and servicing the bike. It is currently in it's infancy, but will grow to contain useful information that I will likely need to refer back to at any given point.

Oil Changes:

Oil weight: 10w-40 winter 10w50 for 90+ degree days

My oil of preference remains Honda GN4. Best for the price, best additives package, I trust it.

Oil Capacity with filter change:

Initial Setup & Test Ride

One thing I cannot deny is that when I get a new toe, I get an itch to go shred it! Unfortunately for my bike but fortunately for the local extreme drought, it had been raining a ton lately. That meant I simply couldn't really take the bike out to a lot of the trail systems, both because they were a soupy mess, but also because the other riders I knew weren't interested in riding in the wet.

2006 Yamaha WR250F

Dirtbiking is something I used to love doing but fell out of. The reasons were numerous at the time, but one of the largest contributors was a lack of space to work on my bike combined with a KTM that just demanded constant work. Dealing with that bike burnt me out and made me miss my far less maintenance intensive Yamaha's. I sold the KTM, the friends I dirt biked with got out of it, and so I moved onwards to other hobbies.

C5 Alignment - Starting Point Suggestions

This is a very much ongoing document that is currently in the early phases. I am trying to capture as much information here as I can for retention by the community at large along along with establishing baseline suggestions.

Some of these values may contradict each other. There are a lot of combinations that work, and there are a lot of considerations such as control arm bushings, suspension configuration, tires, your local tracks demands, etc etc.

Useful Links

Track Day 10- Streets of Willow - Rollbar, 5 pt harnesses and fixed coil-over

10th track day is at Streets of Willow with Xtreme Speed track events!

Repairs, upgrades and general plans for this track day:

So there were three significant upgrades done to my car going into this track day.

Autpower race rollbar installed in a C5 corvette.

C5 Corvette - DIY Accusump & Oil Cooler Install

When it comes to things you worry about on a car you track... blowing up a significant part of the drivetrain is a serious concern for most. The engine blowing up is definitely one of the biggest concerns in that regard, and definitely one of my largest concerns with my C5 corvette.

While some folk build their cars for maximum power, I've chosen to focus on reliability and handling. One of the main areas you can take a C5 corvette and increase reliaibility is through ensuring the oiling is good and the engine temperatures don't get too high.

Track Day 3 & 4 - Now with more downforce and a fresh clutch!

Between the last track session and this one we were able to accomplish a fair bit! Coming into the track weekend we'd sorted out, fixed and upgraded the following.

C5 Corvette Sway Bar Sizes & Leaf + Coilover Spring Rate Research Notes

While researching coilovers and then subsequently researching why the QA1 coilovers understeered and drove like shit, I took a lot of notes on sway bar diameters along with spring rates. A lot of informaiton I took from other folks and from various forum posts. Here's my collated information from researching these things.


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