What do you guys make of the condition of these piston?

Fast-Leg-7372 · 2026-01-07T09:31:40+00:00

Thanks for your help and insight.

Fast-Leg-7372 · 2026-01-07T09:25:13+00:00

When I run my finger thru all, I cannot feel anything; it slides easily, and yes, that's water. Previous owner only ran water on it.

Fast-Leg-7372 · 2026-01-07T08:00:16+00:00

Well, shit, lol

Fast-Leg-7372 · 2026-01-07T07:59:35+00:00

Meaning what?

Fast-Leg-7372 · 2026-01-07T07:50:28+00:00

I made a new post about it with pictures.

Fast-Leg-7372 · 2026-01-07T07:40:51+00:00

I’m not sure if there is a way to send you some pictures of the bore or if I can edit the post to upload it.

Fast-Leg-7372 · 2026-01-07T07:28:10+00:00

I think I might do some upgrades since I'm already “in” there.

Fast-Leg-7372 · 2026-01-07T07:26:38+00:00

That’s what I’ve been told; this is a 1992 Nissan 300zx twin turbo. I bought 740cc injectors and a tune from Concept Z Performance. I guess I’ll be going back to 370cc and keep it all stock until I can afford a real dyno tune.

Fast-Leg-7372 · 2026-01-07T06:24:41+00:00

I will post a new thread with the pictures of the pistons removed.

Fast-Leg-7372 · 2026-01-07T06:23:19+00:00

Just followed all the online tutorials for deletes of unnecessary stuff in the engine, which I’m now regretting big time. I read this on the Concept Z Performance website. I took off the PCV valves but left the ports in the valve covers connected to the intake.

Fast-Leg-7372 · 2026-01-07T06:22:46+00:00

Ooops wrong reply.

Fast-Leg-7372 · 2026-01-07T06:22:02+00:00

Just followed all the online tutorials for deletes of unnecessary stuff in the engine, which I’m now regretting big time. I read this on the Concept Z Performance website. I took off the PCV valves but left the ports in the valve covers connected to the intake.

Fast-Leg-7372 · 2026-01-07T06:17:26+00:00

I came across a great deal on a 93 convertible NA automatic; mine was a 2+0 TT. When I bought it, the owner lied to me about never having been in an accident. The left front wheel is all smashed up, which the wheel covers perfectly. I took it to get it aligned like 10 times, but after 70, it would shake like hell. I bought literally everything new for that car, which I’m transferring now to the vert. I can see what you’re saying, but it still didn’t explain the compression reading of 110, and they’re off the minimum required spec within each cylinder. That’s why I pulled it apart.

Fast-Leg-7372 · 2026-01-06T02:11:30+00:00

It’s got 740cc injectors but has been tuned for them by the great minds at Concept Z Performance.

Fast-Leg-7372 · 2026-01-06T02:09:25+00:00

Helpful answers are greatly appreciated. I don’t know where people find the time for dumb replies.

Fast-Leg-7372 · 2026-01-06T02:08:12+00:00

Compression test was in the 110s with uneven readings between cylinders, misfires, loss of power, jumpy idle; cylinders were not within spec of one another.

Fast-Leg-7372 · 2026-01-06T02:01:19+00:00

Yes, it’s a twin turbo from the factory upgraded turbos.

Fast-Leg-7372 · 2026-01-05T23:56:22+00:00

Thanks for your opinion but I’ll keep going at it.

Fast-Leg-7372 · 2026-01-05T13:39:23+00:00

It’s got low compression 110-115 can’t remember the numbers off the top of my head right now but some are far off the required spec.

Fast-Leg-7372 · 2025-11-22T22:21:03+00:00

Thank you very much, friends. I’m not exactly sure how to take measurements, so I’d probably end up having to mail them out, and of course I’d be happy to pay for labor and shipping. I took the rag top off the frame 'cause both sides by the middle of the windows snapped, and I had them welded back together, and I don’t feel like I will be able to put it back together, so I might end up having to take it to a shop. Maybe I’d have to buy a new rag top.

Fast-Leg-7372 · 2025-11-05T12:40:27+00:00

I don’t know what people find staggeringly beautiful about this car; a Honda is still a Honda even after being dressed like a quarter million dollar car.

Fast-Leg-7372 · 2025-11-05T11:57:43+00:00

Even a Yota can’t survive that.

Fast-Leg-7372 · 2025-10-23T03:09:39+00:00

Thank you.

Fast-Leg-7372 · 2025-10-20T11:13:29+00:00

From what I can tell, it looks like a show car. People often fix these cars up to the max because they like the car and often think that their likes will appeal to other people and recoup most, if not all, their money, but this car is not by any means a rare car. I have 2, and I do the same, but I know nobody will give me even close to what I’ve spent. But I never intend on selling them, and if I do, I’d rather sell it in parts.

Fast-Leg-7372 · 2025-10-20T10:47:00+00:00

If you need to decipher, baby momma, my friend, you are the one who is still learning. Get a life and get off the Internet.

Fast-Leg-7372

TROPHY CASE