Just ordered my Rebello 3.0, now what

[oranngetang]

Crazy camo! Must have been pretty bad to strip it down, looks like a lot of work. Nice new looking brake booster!

[Kurbycar32]

It was pretty gnarly.  the PO sort of spray painted it half assed and i think there was some truck bed liner rolled on in certain parts.  I would have just put a new coat of paint on but i was pretty confident that it wouldn't stick, hence the strip

[oranngetang]

What color is it going to be?

[Kurbycar32]

Its an epoxy coat in black.  Should be invincible

[oranngetang]

So... Can anyone say with these Rebello 3.0 engines, that the valvetrain is much louder, almost like a diesel kind of sound in the valve cover when it's running? It's a new to me sound, my L24 never made.

[madkaw]

Interesting ! Trying to think why valve train would be much noisier?

Maybe time to double check valve clearances?

[oranngetang]

Well with only about 30 minutes of runtime since the break-in/dyno/re torque, I doubt it.

[LeonV]

Well with only about 30 minutes of runtime since the break-in/dyno/re torque, I doubt it.

 

I don't.

 

Valve clearances change rapidly during the break in period, as the valve and seat break in to each other. It's common to do many valve adjustments during the first ~1000 miles of a new engine,

[madkaw]

It's an easy quick check and necessary with solid lifter heads. Just check them and eliminate that, plus you can have a peek under the valve cover for anything else that looks odd.

[oranngetang]

I can't push a 0.010" feeler between any of them with a 'warm' engine, and everything looks clean and tidy in there. When I have the time I'll take it for a good boot and adjust to 0.010/0.012 while hot. Read on Zcar that 0.001" is equivalent to 5* of cam timing on a stock L24, seems like an excessive amount, but the credentials sound legit.

 

Any idea what Dave runs for lash on his cams, or would it vary each grind?

[madkaw]

I wouldn't trust any answer except from the builder

[Zed Head]

Doesn't Rebello run their engines for a break-in period?  Or is that only if you ask for a dyno sheet?

 

Many of the performance cams run a tighter lash than stock.  I agree with madkaw, just do exactly what the builder says to do.  He's built hundreds or thousands of these.  If it were mine, I would make a video or sound file and send it to him.  You might have a problem that can be fixed before it does extra damage.  Or even call him first and tell him it's very noisy.  He might have a procedure he wants you to follow.

 

On the lash - you can't stick a .010" in there but what can you?  What is the actual measurement?  Lash grows as the engine warms up, but if you're starting with a valve open when cold, you could "burn" or warp it.  Best to get a real number.

 

Bummer that it's not an easy break-in.  Extra noise on a new engine is not normal.