Ok, so I heard about a method of relieving positive bottom end pressure on honda motors. The person told me that by removing the two bungs on the back of the block and drilling and tapping them to accept an AN fitting, you can use a catch can to relieve the pressure, sorta like pulling your pcv valve but no leaking. I dont know if this is a good idea or not and I was looking for some more information on it, but has anyone heard of this? Is it a good idea like putting bungs on the valve cover for a catch can? Thanks guys






Modified by boostedek9 at 4:02 PM 1/30/2007

 

bump for more info!!

If this is true, I need to tell Joe while he is building my motor.....

 

Search for a thread started by user 'DASHER' about PCV systems and breather setups

 

searched and read, I see he talks about breathers and what not, but not much about the bottom end and if this is a good idea or not?

 

http://www.theoldone.com

If you are really against drilling the OEM fittings out and welding on, http://www.z10eng.com

#Z10-4006


Modified by a1320addict at 9:17 PM 1/30/2007

 

you don't need to do the AN fittings but if you fab it to make it work for the bling effect, make sure it's a lot larger than the -4 size you show in the pic.

 

scott just got done welding -12 bung on my two block fittings. get some steel weld-on bungs, weld them on, then drill them out.

some will say its a good idea, some will say its the dumbest thing you can do

 

http://www.theoldone.com/components/breather/

 

i think the valve cover is a beter idea to weld them onto. reason being those are oil drains and the oil is just going to run into them... of the valve cover you get the same effect with out waisiting as much oil

thats imo some people like this way, i dont.

 

Is it necessary to do both? to relieve pressure in the bottom end and the top? or can one just be done and the problem be executed

 

If you're having blow-by problems, off the back and the valvecover is the way to go

 

no i think the top its self is fine.

you have oil ways up to the top so that extra air is going to make it up there to be relived.

 

i also have two on the valve cover

 

True, well I guess I'm gonna try it out!