jcm987 Posted April 29, 2020 Author Share Posted April 29, 2020 3 hours ago, peteslag said: That was the other one I was eyeing up actually, thanks for getting back to me. My car is almost completely standard so I think that will be sufficient for my needs. My first few track days were on old cracked bridgestones so not much chance of high cornering g. My next few will be on brand new PS4's so it will be good to have peace of mind. I'm at the Silverstone Porsche club track day in August, can't wait! It was one of the first mods I made, in fact before I even went on track I think. The PS4's are amazing tyres, you will probably notice a big difference. Link to comment Share on other sites More sharing options...
jcm987 Posted April 29, 2020 Author Share Posted April 29, 2020 I don't think I have pictures of the fitting process, just these ones of the diff comparison. I'll check my work computer if there are any more. Have you ordered one? I can't wait to try it on the track. My old man was the master mechanic doing most of the work on this. I was basically the tea boy! Link to comment Share on other sites More sharing options...
peteslag Posted April 29, 2020 Share Posted April 29, 2020 1 hour ago, jcm987 said: It was one of the first mods I made, in fact before I even went on track I think. The PS4's are amazing tyres, you will probably notice a big difference. Yes, a good friend of mine put me onto PS4's, not had a chance to see how good they are yet. This is me at silverstone, completely standard everything! I've put better pads in, better tyres and will have the baffled deep sump. I'm really looking forward to investigating the differences. Link to comment Share on other sites More sharing options...
Dougle_turbo Posted April 29, 2020 Share Posted April 29, 2020 1 hour ago, jcm987 said: I don't think I have pictures of the fitting process, just these ones of the diff comparison. I'll check my work computer if there are any more. Have you ordered one? I can't wait to try it on the track. My old man was the master mechanic doing most of the work on this. I was basically the tea boy! Love it! Not ordered one yet...... Did the back lash etc need measuring or was it a case of swappinging the ring gear and bearings over and making sure they are fully home? Everytime I watch this video, it seems like a fairly straight forward process..... Link to comment Share on other sites More sharing options...
Popular Post jcm987 Posted June 13, 2020 Author Popular Post Share Posted June 13, 2020 Update time: 2 track days down since the winter work was completed and the car feels better and faster than ever. In fact, I think it's now done, complete, finished, no more performance related modifications.... Sitting in torrential rain in a traffic jam on the way home convinced me not to go full race/track car. I need music, air conditioning and some comfort on the long journeys. So now the goal is reliability and maintenance, how boring! So here's a picture of me yesterday lifting a front wheel at Castle Combe. 4 Link to comment Share on other sites More sharing options...
peteslag Posted June 19, 2020 Share Posted June 19, 2020 On 13/06/2020 at 17:46, jcm987 said: Update time: 2 track days down since the winter work was completed and the car feels better and faster than ever. In fact, I think it's now done, complete, finished, no more performance related modifications.... Sitting in torrential rain in a traffic jam on the way home convinced me not to go full race/track car. I need music, air conditioning and some comfort on the long journeys. So now the goal is reliability and maintenance, how boring! So here's a picture of me yesterday lifting a front wheel at Castle Combe. It looks like you are flying around that track..............literally! Great photo. 1 Link to comment Share on other sites More sharing options...
Popular Post jcm987 Posted June 19, 2020 Author Popular Post Share Posted June 19, 2020 Cheers! A couple more pictures from Castle Combe. 2 Link to comment Share on other sites More sharing options...
Popular Post jcm987 Posted July 25, 2020 Author Popular Post Share Posted July 25, 2020 A while ago I made the mistake of thinking Parr had made a mistake with the suspension geometry front camber, as it was significantly less than I usually ask for. It turns out they made no mistake at all. The front strut brace I fitted (pictured) limits the camber adjustment at the top mounts and basically takes the camber back to stock. No fun there. I basically have 3 options: Sell the strut bar and go back to aggressive camber, take a drill and grinder to the strut bar holes or live with baby camber settings without modifying the bar... Well it's due to rain the next few days and I have a big pillar drill to play with! 1 1 Link to comment Share on other sites More sharing options...
Hunty Posted July 25, 2020 Share Posted July 25, 2020 Well depends if the strut brace has made enough difference, I'd expect the camber makes a more noticeable difference than the brace. If you drill slots in the strut brace, will it still be as effective? Link to comment Share on other sites More sharing options...
Lennym1984 Posted July 25, 2020 Share Posted July 25, 2020 (edited) What camber were you running before? I may have a solution that will allow you to keep the strut brace but you'll be limited to 1.5-1.75 depending on how low you are ETA: scratch that, I see you already have the gt3 LCAs Edited July 25, 2020 by Lennym1984 Link to comment Share on other sites More sharing options...
jcm987 Posted July 25, 2020 Author Share Posted July 25, 2020 3 hours ago, Hunty said: Well depends if the strut brace has made enough difference, I'd expect the camber makes a more noticeable difference than the brace. If you drill slots in the strut brace, will it still be as effective? I can't tell any difference with the strut brace. Yes it should still be effective as it the goal is to just alter the holes to allow the top mounts to move a few mm inwards. Link to comment Share on other sites More sharing options...
Lennym1984 Posted July 26, 2020 Share Posted July 26, 2020 11 hours ago, jcm987 said: I can't tell any difference with the strut brace. Yes it should still be effective as it the goal is to just alter the holes to allow the top mounts to move a few mm inwards. If you have adjustable LCAs, why don't you just add more shims? Link to comment Share on other sites More sharing options...
jcm987 Posted July 26, 2020 Author Share Posted July 26, 2020 46 minutes ago, Lennym1984 said: If you have adjustable LCAs, why don't you just add more shims? Because they're already maxed out with shims. Link to comment Share on other sites More sharing options...
Lennym1984 Posted July 26, 2020 Share Posted July 26, 2020 What camber are you running??? I thought you could get to around - 2.5 with the adjustable LCAs? Link to comment Share on other sites More sharing options...
jcm987 Posted July 26, 2020 Author Share Posted July 26, 2020 Yes you can, but you will also need to move the top mounts inwards, which is now restricted by the strut brace, I had up to -3 before. Link to comment Share on other sites More sharing options...
Popular Post jcm987 Posted August 6, 2020 Author Popular Post Share Posted August 6, 2020 Cayman revelation: It's the ultimate pizza delivery car! I should copy right that before some millennial YouTube steals it. I'm using the Cayman as a daily for a couple of days before Castle Combe and shock horror my local pizza shop have started charging for delivery. Being a tight ass, I didn't fancy paying the whopping £2.50 for delivery, so did the logical thing. Get the jack out, increased the front ride height, folded myself into the bucket seats, put the harnesses on and carefully negotiated the maze of speed humps at 2mph to the shop. Much to the annoyance of the junior estate agent (I'm guessing) in the black BMW 1 series behind. Turns out the roll cage and engine cover net is perfect for securing a pizza box, keeping it perfectly level and importantly, hot. Pizza stayed in the centre of the box, didn't touch the edges at all. So if work takes a downward turn, I now know I have the ultimate pizza delivery car. 2 Link to comment Share on other sites More sharing options...
Popular Post jcm987 Posted August 12, 2020 Author Popular Post Share Posted August 12, 2020 (edited) The little cayman survived 30+ degrees at Castle Combe and run flawlessly all day, same couldn't be said for me. As I gradually melted, my driving got worse and worse. According to the eBay temperature gun the discs/callipers clocked 500 degrees even after a long cool down lap, and the AP racing temp strips topped 295C! It's a cliche to preach to track day newbies, just focus on brakes first, but this really drives that point home. Still the best modification by a mile, race discs/pads, motul race fluid, braided lines, larger cooling ducts and GT3 master cylinder. Works a treat. First time using Nankang AR-1 tyres and our new homemade geometry setup and very happy with the result. We went 7 tenths quicker than the previous month on used Toyo R888r in similar conditions. Accidentally got into the 1'17s fairly comfortably which was a surprise due to the heat. Lots of fun chomping on the rear wing of a purple 991 GT3RS through every corner, only to be left for dead on the straights. I've attached our homemade geometry for fun. Now any expert will be quick to tell me I'm wrong and this setup is no good. But as mentioned before, we couldn't achieve the previous camber due to the struct brace and was running out of time after fitting new track rods. So instead went for more front toe out, slight rear toe in, dropped the ride height as much as possible front and rear and changed driving style. The result is amazing, very planted front end with zero understeer. It's not for the faint hearted as its pretty twitchy and requires you to pay attention, but it's a track car. I have no interest in driving fast on the road, so as a compromised setup it did the job pretty well. Next up Snetterton. Edited August 12, 2020 by jcm987 2 Link to comment Share on other sites More sharing options...
Lennym1984 Posted August 13, 2020 Share Posted August 13, 2020 What was the front tyre wear like with that camber? I had mine on track on Friday (running similalr front camber to you) and I was pleasantly surprised (stil got shoulder wear but much improved over stock). Link to comment Share on other sites More sharing options...
jcm987 Posted August 13, 2020 Author Share Posted August 13, 2020 2 hours ago, Lennym1984 said: What was the front tyre wear like with that camber? I had mine on track on Friday (running similalr front camber to you) and I was pleasantly surprised (stil got shoulder wear but much improved over stock). It was pretty good, I didn't notice any considerable wear considering how hot it was. Link to comment Share on other sites More sharing options...
Founder Beanoir™ Posted August 15, 2020 Founder Share Posted August 15, 2020 I think I’d have failed in that heat, no AC?? Which Motul brake fluid are you using? Link to comment Share on other sites More sharing options...
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