Valve clearances

[maq]

I have a B18A block with a B18B head. My exhaust cam is from a B18A, and the intake came is from a B18B.

I assume i would use the valve clearances from the B18A for the exhaust and the ones for a B18B for the intake?

My valves are knocking really bad and i have adjusted them before but only to their max tolerances, my feeler gauges didn't go small enough, need to get some new ones.


Is 0.007" good for the intake?

 

[cabezzzdb8]

Non vtec cams are the same spec no matter if theyre are from a A or B motor, if the noise is that bad i suggest a leak down test to make sure the valves are not bent, search for the crearance of the valves, takes 2 seconds

 

[maq]

Would bent valves hinder the power of the the car? Could i do a compression test or is a leak down the only way to test it?

 

[cabezzzdb8]

Would bent valves hinder the power of the the car? Could i do a compression test or is a leak down the only way to test it?

If theyre slightly vent may notice may not, compression check works too

 

[maq]

I've watched a few videos on youtube, one was a B18C, other one was a prelude VTEC and both of them sounded like my motor. It's the valves but i just don't remember them sounding as mechanical as they do now before i replaced the head.

http://www.youtube.com/watch?v=4vZHIOGLNBU

 

[Aussie]

You probably didn't adjust them correctly. You may know the clearances and know how to do it but there's a knack behind adjusting valves that takes a lot of practice to get right.

 

[BrokenTalon27]

You probably didn't adjust them correctly. You may know the clearances and know how to do it but there's a knack behind adjusting valves that takes a lot of practice to get right.

Yup. Valve adjustment is one of those maintenance topics I let the Master Tech at work or the guys over at Secret Services handle for me. I don't quite have the knack yet.

 

[suspendedHatch]

No I think your problem is how you adjusted the exhaust cam. If it's a B18B head, then you need to adjust the valve clearances to B18B specs. The B18A specs are very different.

I have valve adjustment tutorials on my site in my sig for both the B18A and B18B.

 

[cabezzzdb8]

No I think your problem is how you adjusted the exhaust cam. If it's a B18B head, then you need to adjust the valve clearances to B18B specs. The B18A specs are very different.

I have valve adjustment tutorials on my site in my sig for both the B18A and B18B.

:lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol:

The only differences betwen the a1 and b1 head is the intake manifold, everything else is the same

 

[BOURGEON]

Hi
I am new here but I want to share

B18A2 engine
Intake can be 15 -16
egzaust can be 20-21

You will hear nothing from engine.Works like WATCH.

 

[suspendedHatch]

:lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol::lol:

The only differences betwen the a1 and b1 head is the intake manifold, everything else is the same

Not true. Not at all. Having had an A1 and a B1 head all taken apart in front of me, I think I'd know. But you can start by looking up the valve clearance specs to confirm what I just said.

I wasn't even able to use the same tool to adjust the valve clearance. The A1 uses 12mm lock nuts while the B1 and C1 use 10mm.

Laugh it up.