Tore down intake manifold, fuel rail...NOW...Suggestions sought.

[txtorquemade]

Just pulled my intake, throttle body, thermostat housing.
Replacing the gasket and all the hoses, vacuum and coolant with the kit from BavAuto. Also replacing the thermostat housing, thermosat and both coolant sensors.

While I have the fuel rail out, sending the injectors to be cleaned flow matched, new orings. Maybe just new injectors. Any input from anyone on this? New fuel line and return fuel line.

• Thinking of hot tanking the intake and throttle body to get them squeeky clean then powder coating them, black I think.
• While Im at it, and I have a t belt and WP sitting in the garage.
• Thinking Ill tear into that side of the engine as well.
  WPT-Belt and tensioner.
• I also have crank seal and cam shaft seal on hand.Also have a set of belts that will go on.
• Spark plugs, dis cap, rotor, and new set of wires ought to go well with all this R and R.
• Guess I will hot tank and powder coat the valve cover, of course, new gasket there as well.
  
  Ok guys, what else? I dont want to go this deep again on this car. What else can I do while Im this torn down? Should I go ahead and just pull the head and do valve springs and guides or what?
  
  Input is appreciated. BTW Im in NO hurry to complete this job. Well.. 3-4 months tops as IM moving then.
  
  Please chime in. JLevie.. your thoughts most appreciated Sir.
  
  Thanks in advance.

[Naplm00]

Just did this same job,

intake gaskets ar a must, as well as some of the coolant hoses that run under the intake mani.


Starter may also be a good idea.


buy some studs for intake and exhaust incase you snap any, also get the Orings for the "bitch tube" or oil retunr tub under the intake mani

[StereoInstaller1]

See, I personally can't imagine getting that deep in an M20 and not pulling the head to re-do the valve guide seals, doing the timing belt and cam/oil pump seals...but hell, at that pint you might as well pull the motor!

[NC325iC]

thats not really what i would consider deep into the motor, once you pull the head, you are deep into the motor.

i think your list sounds good as long as all seals are replaced

[jlevie]

Personally, I'd pass on the hot tanking and powder coating. While it will make things look spiffy, it won't make the engine run any better. That money would be better spent on a head refresh (valves ground, new seal, and possibly new guides).

Send the injectors to http://www.rceng.com/ for cleaning and flow testing.

[StereoInstaller1]

thats not really what i would consider deep into the motor, once you pull the head, you are deep into the motor.

i think your list sounds good as long as all seals are replaced

Didn't say it was all that deep, did I ?

But by the time you pull the intake off, you might as well pull the head and freshen up...unless it was done in the last 50,000, max.

[txtorquemade]

See, I personally can't imagine getting that deep in an M20 and not pulling the head to re-do the valve guide seals, doing the timing belt and cam/oil pump seals...but hell, at that pint you might as well pull the motor!

I knew it ...I knew it... LOL...

Pull the head huh? Well... I cant say IM not thinking about it, but Im trying to keep this at a reasonable cost.

Ok... .how much? JLevie? SI....whaddayou guys think about this?

Thanks for the input....

[txtorquemade]

Bump for answer....

How much am I looking at to pull the head, valve guides, regrind, whatever??

[kenika65]

First take some pics of your intake ports and post them then let us determine if needed by carbon build-up and whatnot...

If anything to clean it up get the intake and valve cover sand blasted and pressure wash the engine compartment, I went with rebuild injectors b/c I don't want to have to do this again, but ended up having to b/c of an injector leaking at the top of the injector...

Here is a pic of the valve cover in Harley Davidson wrinkle finish and intake silver...