Hello,

I've just done a slight OEM rebuild of my B16A2 (EDM 1.6l DOHC OBD1 VTEC)

Hope i dont forget something, so what was done is:

-Honda HG

-Water pump, timing belt kit

-All gasket was changed by full Honda, except the one that i can't find at my honda dealership ( oil pickup gasket and igniter seal )

-Skunk2 Valve stem seal

-Valve all cleaned and seat grinding, they were place in a mandrel to clean so i hope no one is bent in my mind

-Piston / rod not replaced, only ACL bearing clearance check "OK", Hastings piston rings



I think that's all i can remind for the moment, but i surely forgot something ^^

So my engine, at the beginning, from the first start just does a little knock knock, not like a spun bearing but a consistently noise that is present at iddle to 2500-2900, after that i can't hear it (maybe buy the exhaust noise /engine noise)

I previously found some tape right in the oil pick up.... just don't think to clean the oil pan and so... I'm gonna check as soon as possible the bearing but the noise i truly caming from the timing belt size.

I can see the oil light sometimes flashing when the idle drop down while steering and braking at the same time (idle drop to 650è700 rpm), just bought an oil pump waiting for it.


What's your opinion on that noise? I'll reccord a video to show you.
The LMA is the first gen one, the middle rocker while pushing on it isn't really easy to press so..?

Done 2 valve latches adjustement, but the engine was running like 2 hours ago at this winter time, is it ok? I'll do it again to be sure.


Thank's in advance.

 

it's probably piston slap, because I'm guessing you re-used the old pistons, and honed the cylinders a little with a drill-hone?
how many miles were on the engine before you took it apart?

 

What are you calling a piston slap ? I never heard about it sorry ^^

I can hear a noise coming from the front engine too, I was supposing the lma...
It's exactly what I do...

Just put a new piston ring and hone it really slightly.

It was approximately 230 000km.

Thanks

 

Here is the engine noise when it's really cold, it's amplified, we can't here that so loud for real, warm video still uploading.



Here is one when warm :

Thanks for your help :D

 

I forgot to precise that when idle is really low, just installed an oil pressure gauge... The result is really really bad..

When the engine is cold at 1600rpm oil pressure is at about 350-400 kpa which seems to be good.

But when it is warm, it is down to 10-30kpa which is really really low, so that could came from the engine bearing right?
The oil level Is good, change is really fluent after the rebuild.

 

is it an electronic oil pressure guage, with an electronic sensor? or is it a mechanical oil pressure guage with a hose running to the guage?

 

It is an eletronic gauge with an electronic sensor...

I think i'm gonnay buy an other one but it's an emergency to get it quick and we don't have such thing in here^^

 

every electronic oil pressure guage I've ever seen or used in person has been terribly innaccurate at hot idle. they all do what yours is doing, and everyone freaks out because of it. they always seem to read only 1-5psi on ther guage when the pressure is really at 20-25psi.

That is why I always use mechanical guages, they're the only ones I've found to be accurate at all times

 

That's really strange as I see a lit of people use it ^^
Yeah it's really inaccurate I think but, the oil light blink sometimes when it drop down so it's not good too :/

 

The oil warning indicator light on the instrument cluster illuminates at or below 7psi of oil pressure. Unless your engine is idling at 500 RPM, you will NEVER see this indicator illuminated with a healthy running engine. If you see the oil light come on anytime ABOVE idle speed... turn the engine off immediately to avoid additional engine damage.

 

7 psi, that's good to know, I was searching for this value.

It's just flashing one time when the idle drop really like at 600rpm, I think that my oil pump is bad cause I just wipe my oil pan and when I get the oil pan I see some gravel down of it and the oil pickup was clogged... I hope that nothing is damaged inside :/

 

Hello,

i came back with a new and 100% functional oil pressure gauge.

So at cold for the first start i only got like 4 bar at idle, and jumping down to 0.2 bar at idle when oil is at 80-84°C.

Know i didn't have anymore the vtec oil pressure code, it's 4.3bar in VTEC(only for test..) and didn't move up, i just recently change my oil pump .

As we can here from the first video, would it came from an spun bearing?