CharleyH .

Thanks! I’ll definitely try both the SR1 and SR3. The house racing series at AMP has a lot more competition in SR1 so I’m inclined to go that direction but I’ll keep an open mind.

What a great topic! I'll come at it from the other side: Radicals are slow, fussy, and expensive compared to proper SCCA sports racers like, say, a Stohr WF1 or an ex-IMSA Lites car. We have a fello...

From this weekend's rain-soaked Divisional. Gonna have to get a better camera than my AIM. Won the group ahead of a Beasley P2 and also set the GTX track record.

July 2022 with Spring Mountain Powertec America. The damage on this engine after 25 hours on-load was minimal but needed a new clutch and transmission parts. I would imagine there are many standard ...

On your SR8 it is fitted to the bell housing/oil tank. Cannot remember which side but it is an anodised plate on the bottom of the tank, the same one which has the drain plug in. 150° is the default r...

Thanks David. Very important correction in post number 2, you wrote "The Mustang GT3, built for IMSA GT3 race series, cost about 250k in 2017. (The updated FIA GT3 2023 version from Ford will certain...

I called the Radical engine department in the UK, and I was able to talk to I think the lead engine rebuilder as well as another engine tech. They both confirmed that the refresh schedule for the 150...

Thanks Dan and Charley for the input. I have sent an email to Spring Mountain for clarification, and I will likely send another to the factory. It would be useful to hear what they have to say, alth...

You are correct. In my ECU log book data, I have the following for on-load: On-load engine speed (rpm): 4000 On-load throttle position(%): 25.00 On-load vehicle speed (kph): 48.3

@charleyhradicalsportscarregistry-com Thank you very much. Just going through the car nose to tail getting a good baseline for maintenance and safety. Won't see the track until spring up here.

I used the above information to make voltage readings and changes to my MBE ECU TPS. Take the TPS voltage readings with the ignition on. It does not change with engine running or not. The TPS cover wi...

Complete SR3XX headlight assemblies are all gone, 1 of 2 GDU's are gone as well already and 2 sets of wheels are gone in just 24 hours.

@nautoncall .... Attachment : IMG_3607.jpg See other recent replies for Tasmania's climate which will determine if this is relevant for you... As mentioned in the other posts, I only blank the ...

@charleyhradicalsportscarregistry-com ... here's my solution to that happening... Nothing a bit of 'fly-screen' material won't fix... and the restriction to air flow isn't a problem in our climate he...

@stephen ... certainly never had a problem getting the GDU/gearbox temp up on mine... in fact quite the opposite. I've got some of those stick on temperature guides and they tell me the outside surfa...