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No, you won't really find any gains there without some serious head work (bigger valves, wild cams, etc) Can't believe its been nearly 7 months since the last update, anyway 😁 After switching to RS29 for Cadwell Park above, the brakes were running hotter than ever (smoking during pit stop)...

Yep, back in 2011. 3 ponts and a fine. It was a small trailer, with a MK1 Clio on it. Get the wrong traffic officer and your not getting away with it. My advice... just do the test and forget about it. Isn't difficult whatsoever. In 8 years and many tens of thousands of miles towing, I've been...

You'll probably also find your gearbox heat exchanger thermostat is showing its age too,... I first changed the stats at around 90k, back up to 90-92C all the time. Then after about 30k I started to see a slight drop, only 5-10C or so. Unfortunately, you cannot replace the heat exchanger...

Mines had a hard life being used for a lot of towing (across Europe and UK), along with being mapped the entire time

If you also look into the 6HP26 documentation/manuals, the correct service/drain/fill procedure is all based around temperature and the car being 100% level to get it spot on - shame its not just as simple as 'changing the oil'. I factored in the box rebuild price when I got the car nearly four...

Yeah I paid £300, so its in the ball park. Yes, 100% should be on the BMW system if its always been there (they won't have touched the box though unless it had a warranty job related to it, considering they class the oil as lifetime ?

If its not been serviced before, in my opinion I wouldn't touch it, its debatable whether it had an effect on mine or not. I had mine serviced at a ZF centre @ 100k, then it went with the clutch E fault at 130k anyway. My mates E91 has 140k on it, never serviced no issues. Another E90 went at...

Rebuild with new torque converter, new solenoids and all the associated stuff (10L ZF lifeguiard oil etc), at a ZF specialist.... was around £1800

The E6x platform is solid, M57 is a brilliant lump but you can't compare it to the newer stuff for economy (but like you say why buy a 3.0 diesel for economy!!) Mine has tested my patience in the past 120k miles at times, but on the whole been great (E61 has more issues with air suspension...

Generally the cars in Class B/A are well built, but some people are not interested in attention to detail. Aside from the bodywork post=qualifying, I'm pretty happy with it. Like you say thogh, I wouldn't be happy with some of the cars on the grid, but everyones different and if it passes...

To be honest I went there with zero expectations, being the first outing and many other unknowns. It would have been great to run the full length, but these things happen - it was the 205 that had a hard hit into the wall, and thankfully the driver was OK, but 750MC made the correct decision...

With Cadwell Park quickly approaching, one of the last jobs was to sort the rear towing eyes. This involved removing the standard rear bumper mountings, so the tow wires could bolt through the chassis legs, and then making two new mounts for the bumper itself. Time consuming, but got there...

Standard M10, or timeserted to 11mm? Using a stud you have got far less risk of pulling the thread, as your loading up the stud and not pulling/turning on the thread itself whilst tightening. Considering I have had one pull, I would never go back to it.... as I had paid for the block to be...

Pretty much - the iron block and M52 head have been taken to the machining/clearance limits also. The block is from a 325 - I could save 20kg in the engine block alone by using an M52 (328) block as it is alloy, but I have had issues with head bolts pulling in the past so the reliability of the...

M50 Iron Block M54B30 Crank, Rods, Pistons M52B28 Head (Same throughout the 323/325/328) Cams ARP Hardware (Rods/Mains/Head Studs) VAC Oil Pump ATI Superdamper Jenvey 45mm ITBs S50B32 Exhaust Manifolds + 2.5" Single System Probably a few other bits I forgot about ?

I have a set here that I use when I have a passenger seat back in the car, no issues ? It depends what access you have to equipment for making things like that, without access to someone with a full workshop I wouldnt' have been able to make my own

Driftworks sell them for the 'passenger' side also, same principal, just reversed ?

Only a small update this time, but another change non the less. I have ran the Driftworks E36/46 specific sidemounts for a while, but wasn't 100% happy with how far back the seat was (I had approx 30mm more space behind the seat). The Driftworks mounts work well as they shift he seat right over...

Cheers. When properly pushing I see between 100-110, slightly higher when in hot air behind other cars, it seems happy there. Take it with a pinch of salt as every sensor has a slight amount of variation, and I'm measuring in the flow rather than statically in a sump say. I don't run anything...

Functionality wise, spot on, after some initial fine tuning with the throttle linkage. I'm now on the same pad all round, and have moved to the AR-1 (80TW vs 220TW of the RS-R), so expect to make some significant tweeks on the test day @ Cadwell. The only 'issue' I had was a leaking Tilton...

Unfortunately there won't be one ,but if you want to know any further detail just ask ?

I added four -6AN bulkhead fittings into the spare wheel well, essentially the same idea as the differential cooler lines. There is a pair on each side of the spare wheel well, the O/S being the feed and return from the main in tank pump, and the N/S going to the fuel rail/engine. These lines...

So after two track days I was stuck with the same issue, and the only bulletproof solution in reality was a swirl pot and external pump. I originally wanted to avoid doing this, as its a considerable amount of work, and I didn't want fuel lines running inside the car if I could help it. After a...

Long overdue update - after the bearing/flange were replaced, we went over to Cadwell for a track day. I wanted to do a day here before going back to race in July, even though I've driven it many times over the years its always good to go back. The day was half successful, but thankfully...

Post trip check over resulted in nearside rear hub/bearing play. Looks like Spa finally killed off the bearing. After stripping it down, the hub flange had also heavily worn in the bearing. So both bearing and hub flange were replaced. Spanner checked the rest of the rear end and...

Thats exactly it, makes it much easier to install/fit and forget. They are not cheap but in the grand scheme of things could prevent a lot of (electrical) damage!

Yeah, the second cable runs to the bulkhead like you mention. Sorry the picture is from the incorrect perspective really - its still isolated, as the battery is not earthed to the chassis. The battery earth is connected to the isolator directly. Obviously, if this cable is severed or comes in to...

If I was using a mechanical 'manual' style isolator, sure, without a doubt it would be fused traditionally. With using a solid state isolator, which essentially replaces the battery earth lead, it instantly breaks the circuit in the case of a dead short to ground. Its essentially a re settable...

So after Oulton Park there were a few small jobs I needed to sort before heading to Spa for two days. I had an intermittent issue with the wide band at Oulton, reading incredibly rich, which I put down to a bad sensor as the car felt fine - but to be sure I wanted to run it at EFI to ensure all...

Had a good couple of days - what car were you in? Quite a few things to update, I will get it posted soon!