john h

Sweet! Is that you driving, Jonathan? And which car?

Well, the problem is fixed. Seems the previous owner or the shop he had working on the car had the fuel lines to/from the tank reversed. So the return was hooked up to the external inline pump and the...

I bought a fuel pressure gauge set but none of the connectors fit the fuel rail AN fittings and I didn't get a chance to buy one. But I disconnected the elbow at the end of the fuel rail and ran the p...

My 2004 SR4 (which appears to be very similar mechanically to an early SR1) seems to be having issues getting enough fuel pressure. From what I can tell, I only have an inline fuel pump, probably a Bo...

Hi everyone. I'm planning on selling my SR4 (chassis #7) shortly. I've used it as a track day car since purchasing it in August 2018. I just don't have time to use the car anymore, although it's st...

Wheels studs from Radical are pretty short. I suggest using NAPA 64143781 ( or the equivalent Dorman 610-543 ( . Gives an extra cm or two of length. I also like these wheel nuts from NAPA:

Updating the brakes and shocks on my SR4 (mechanically identical to an SR1 and the suspension seems to be identical to an SR3) and ran into something I thought was odd. I removed the front left shock....

Quick update... Am ordering new shocks (standard AVOs) and springs. Also getting new Wilwood calipers and pads and will be updated my rotors. Calipers, pads and rotors are still from when I bought t...

Forgot to mention... I ran four very hard 25 - 35 min sessions on VIR South. I didn't have any of the sore forearms that I normally get after two - three sessions in my SR4. Given that caster isn't r...

The last year or so, I have been feeling pretty beat up at the end of a few 20-25 min sessions in my SR4. I always get a lot of steering kickback in corners and the ride on the straights has always f...

@Graemed -- do you happen to know the size and length of the grade 12 bolt you purchased? I forgot to measure and size that bolt when I was working on this and I have the car at the track garage righ...

Hi Graeme. Thanks, that makes sense. Socket cap screw should have a small OD on the head. I have to admit, I haven't been successful in visualizing how the Nik links work. I tried loading as well...

I've been running Hoosier scrubs bias ply slicks since day one. In corners, I get a lot of high frequency kick back, almost like the tires have lots of flat spots. Straight line isn't an issue. It's...

On my SR4 (same as an SR1), I cannot remove the right side Nik link bolt. It hits the back mounting point for the front part of the upper wishbone mount before the bolt can be removed from the Nik li...

Just in case anyone else needs this info... The McMaster rod ends work fine and do have 1/2" longer threaded ends. It appears that the older Prosport/Clubsports offered two upper wishbones: Th...