Ok here is my problem i traded my car for a Lsvtec coupe. Love the car. But after driving it, it spun a rod bearing not 2 bad but it did. i caught it fast so it didnt dmg the crank. Now i changed the oil like ur supposed to cause the metal in the oil pan from the bearing.(5w30) and now its tapping sounds like its comming from the head not 2 sure though. was thinking valve tap. Ok so now symptoms. when i start it cold start it makes a fast tapping sound then stops. When i drive it it does the same sound at higher rpms or underload i can say but its not loud. I thought a valve tap is at idle also so thats why im counfused. the motor is a b18a1 and the head is gsr.

 

probably the lifters

 

Wouldnt lifters make a tapping sound 24/7? it does it for a split second when i cold start it after that sounds gone. And does it when i drive and i hit the gas, when i let off the gas it stops.

 

I had the same problem. I bought a ls vtec motor off of here dropped it in and went to knocking. come to find out the bearings were to small so I changed them and changed the oil every other day. Still had the tapping so I adjusted the valves and that didn't work. The last thing I did was retard the time and that is what worked for me. My ls vtec use to do it at start up and start tapping around 3500.

 

It's a rod bearing, it just isn't that bad yet.

Keep driving it, you'll find out quick...

*< 100 miles, I'd bet on it.

 

ok,...you say it spun the rod bearing....did you actually replace the bearing? mic the rod? mic the crank? or did you just change the oil????

 

I mean, unless I'm mis-reading something in his headache of a statement.

I've killed many motors in my day, hell my last D15 died just like that.
Knocked at cold start, then stopped, quiet as a mouse at idle, I could drive it and short shift around 3K rpms, right when it would start to knock.

Yet, say in my old Eclipse, 420A, it spun a bearing at cruising speed and knocked its ass off constantly.

It's all about the bearings themselves, and most Honda's aren't rebuilt with OEM bearings...

 

sorry to hear OP's misfortune.. the motor ran strong, before this mishap....gl getting it right

 

New rod bearings standard size

 

So first gear today it stalled now it won't start or crank over sounds like it try's but doesn't do shit