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Mahle or Felpro are available for cheap through Rock Auto. They include the valve cover and spark plugs, but don't appear to include 12351-PR7-A00 or 12352-PR7-A00 (which appears to be for the portion of the valve cover that extends to cover the cam gears, which obviously won't have oil...

My engine glass gas struts are weak, made worse by the cold weather (hopefully on the way). I've got some SOS replacements, but I'm having trouble removing the OE struts. I planned on just removing the lower bracket and then upper ball, leaving the OE struts and upper and lower attachments all...

I installed this Endura Lite exhaust on my NSX last Fall (car was put back in service at the beginning of this year after major refresh). I paired it with Pride exhaust headers and HFC's. I found the whole set-up to sound awesome, especially for a quick backroad rip, but to be a bit aggressive...

I just finished a ton of work on the car and when I fitted the wheels again I was too enthusiastic snapping the center cap on. Dang! I broke a couple tabs off the back. Anyone have one? Or a whole set? A couple of mine are damaged....Thanks, Sasha

So, maybe I was snookered by the low price of the bushings, too, as others apparently were; I read a thread on here where the pay-off of replacing the OE bushings with the SOS bushings is imperceptible to many. I figured what the heck, I'm in pretty deep. But, if I've got to get the car...

I'm in the middle of a bunch of mods/maintenance, including replacing the alternator and compressor belts. So I figure I'd amortize my work and install the Cedar Ridge pulley shield from SOS. In theory, I can just remove the bolt at the end, pull the pulley, install the shield, and reassemble...

I'm mid-install on a set of new Pride headers. I've found some write-ups that appear helpful but contain broken links that don't help. So, here goes my short list of questions: -For the front bank header I gather I need to drop the Front Beam of the rear sub-frame? It looks like there are...

So, I read up on oil pan gasket installation before changing it while removing the small dent in the pan (which seemed to be successful). I got a new Fel-pro gasket, I elected to just use the Permatex Permashield only at the corners that correspond to the seams in the bottom of the block (I...

As I continue to try to make my "new" '91 as bullet-proof as possible with a long list of maintenance and OEM+ additions, I spent time reading the long threads about the oil pan gasket. Mine is leaking and I'm putting on exhaust headers, so why not address it now? My pan is slightly dented...

I've got a '91 and I've downloaded a PDF of the '91 FSM. Why does the manual say an oil and filter change requires 5.3 US qts. and on the air box there's a label that says 4.5? Which is correct?

I'm trying to pop off the plastic trim that forms an inverted channel along the passenger door sill, covering the edge of the carpet. I've popped the little hand bolster for egress off and removed the screw at the back, but I don't see how to disengage the front, up under the dash in the...

I've already got the PDF download, but it's cumbersome to use, especially out in the shop. Anyone with a hard copy who's willing to ship it?

I'm ordering parts to bring my new '91 up to snuff. I was fixin' to order a Cedar Ridge pulley shield from SOS and investigating my situation: what is the pictured crank pulley? It doesn't look OE to me....

I just bought a '91 with 83K and a sticker indicating a R134a conversion was completed. While conducting a PPI with the car sitting inside a service bay (i.e. in the shade in a conditioned space) I measured the temperature drop with an IR thermometer with the A/C running to be 30 degrees less...

Good Morning NSX Prime! Well, bucket-list car ownership achieved. I got back home to Durham, NC, last night with this bone stock red/ivory '91 (JH4NA115XMT000481) that I picked up on Tuesday in Minneapolis. After getting expensive shipping quotes from companies I didn't trust, and outrageous...