Car: 2015 CTR FK2
Join Date: 28th October 2015
Location: midlands, uk
Thanked 220 Times in 197 Posts
Abingdon done, what a day and what a car!
car was almost faultless and the issues i did have were all temperature related.
bearing in mind, mine is slightly modded (see my sig) and ambient was around 23C today, and probably 35-40c track temp, it coped very well.
car was flushed through with ATE Typ200 brake fluid a few weeks ago.
first things to get me a bit worried was the brakes. first few laps and brakes perfect. after that they pedal had more travel but after checking things out, no air or anything abnormal could be found. pedal was slightly longer traveled for the day but got used to it and i think actually helped modulate the pressure better. A few sessions i had the front pads dimly glowing when i returned to the pits but oil and tyre temps were the weaker links on the car. Oil peak temp was upto 130c so the STACK pro-control guages i recently fitted were FAR better than the imid option. very bright, colour change and blink when things get too hot. tyre performance seemed to correlate to the oil temps with todays temps.
I did have a little moment that -1'd a cone. off to speak with the marshalls and thats when we saw some smoke from the rear brakes (i was still in the car). probably end up upgrading the discs when their worn since i've got the ProjectMu NS pads on the rear.
everything went well upto lunch so off to get fuel. 2/3rds needed so fuel consuption was far less than i expected. I was expecting 1.5-2 tanks for track only, but probably could of done it on 1 tank including the 1h traveling each way.
first trip out, after 8-10mins and my last lap before coming in, and the first mechanical problem hit. 20 meters after the pit entance a loud bang and all power lost. had to do a full lap at 25-30mph. Thankfully i just blew a boost pipe off. the one i thought i'd have issues with at some point; the one that connects to the hard-pipe over the gearbox, just below the intake system. need to look into a solution - probably just get a better type of jubillee clip than anything more involved.
I assume it was temp related - just such a hot day the hose softened up and popped. not running any extra boost, so could occur again/to others.
blowing the boost pipe delayed the driver training by 20mins, but once sorted, off we went. not wishing to blow my own horn, but he couldn't find much wrong at all. first 3 laps he was just watching. lap 4&5 was more general driving talk. by the 6th, he did find something i thought they'd pick up on; braking too late/too much speed on entry and by a similar point, too eager to start the corner so often ran wide & sharper than i should on the exit. I'm very surprised it's just that as it's all been watch & learn others and my own experience. done 1 track day before, the odd handful of kart events and never had anything more the the learner driver stuff to get your road licence in the first place.
The dunlop RT2 tyres seemed a bit soft with the temps today (didn't stand out as an issue on track). outter edge of the loaded tyre is fairly torn up and causing a mild but very fast vibration on braking. need to see how they fair on a cooler day, but suspect i'll need something stiffer, more track focused and/or front camber adjustments. would love to see a similar environment for the ps4s's and how they cope with airfield/track days. I've got a feeling something like cup2's could be a better choice for me.
I ran around 40-42psi front & 30psi rear hot temps. rears didnt need much tweaking as it just felt right. fronts were raised from 34psi hot to try and reduce the sidewall wear.
I was seeing about 6psi increase between cold and hot temps.
so, end of the day, it's a good starting point for my 1st CTR trackday, and a good start to the year.
i cant say i found the rear end brake issues that others have mentioned. not once did i think the rear was going to pass the front, nore did it even hint at oversteer.
I do have videos, but not pulled all the content off the dash cam cards, so they'll come sometime over the weekend.