john h

I bought this from Amazon and it works well on my SR4: Not sure if your's in the same size. I don't use this one with an air gun, but I do use it with my big torque wrench.

In my SR4 the coolant swirl pot is always "burping" a bit of fluid each run. I ended up zip-tying an empty water bottle to the frame with the drain line from the swirl pot emptying there. I fill abo...

Really? Didn't know that. Hmm... (off to check the calendar...)

My wife and I were in London over the weekend and visited the Radical factory in Peterborough on Monday. I emailed the head office early last week and it was quite easy to schedule a time for us to vi...

Does anyone know if you can retrofit the SR3 diff onto an SR4?

Anyone offering a discount on transporting an SR4 from NJ to Spring Mountain? 😀

Charley, neat find, thanks. I do my alignments on my SR4 and have been considering hub adapters for awhile. I wonder if their "basic setup wheels" would work with our centerlock systems and a normal s...

Adding a few of my lowly SR4 at NJMP Lightning... Attachment : IMG_2451.JPG Attachment : IMG_2450.JPG Attachment : IMG_2449.JPG Attachment : IMG_2447 (1).JPG Attachment : ...

John, congrats on the SR3. Are you near NJMP? I track there frequently with the Drivers Club. I normally run in our yellow group for open wheel/sports racer cars. There are typically only 2 - 3 of ...

Easy way to jack the car up... Use the rear jack point, raise the car up until the front splitter almost touches the ground. Then, take a pair of race ramps (scissored together to make a block) or 6x...

Hi all, I'm looking for a rear sprocket for my SR4. Got one on order but I think it'll take a bit of time. Called around, none of the dealers in the US have one. Would prefer a 47T but would take an...

Seems I might be the only SR4 guy on here! 🙂 Charley, I'll take them if you still have them. I'll PM you...

FYI in case it's helpful for others... The MBE 992 ECU that's in the Radical SR4 is hard locked so there is no PIN. I brute forced 0000 - 99999 (all four and five digit combinations) a few times with...

Posted by: hazelnut does it have an MBE ecu? i was thinking about the ecu map locks on the MBE ecus. they are only 4 digit numerical codes right? that means there's only 10k possible lock combinations...

Posted by: CharleyH Why do you want to modify the ECU mapping? Is there an issue with the Mapping done by Radical? I would recommend reaching out to Dan Phillips (Forum member) at RLM engines, or Geo...