blowby

[a100pureplayaz]

hey guys just got rid of the infiniti j30 and picked up a friends 240sx with a sr its gotr a redtop and after having it about a week i realized it seems yo be having blowby someone told me basically not very familiar when i remove the oil cap air is coming out like pretty hard any ideas what this could be also what kind of oil should i use? thank you

[garagelu]

first you need to put some periods in your sentences so people can understand you. If you have a lot of air and especially white smoke coming out of your oil cap, your rings are getting weak and oil is getting past them. A little blowby is normal on turbo cars but if it gets really bad, your looking at a rebuild or a new engine.

Are you getting a lot of blue or white smoke coming out of the tailpipe? And how does the car run?

[a100pureplayaz]

hey sorry about that. there is some white smoke like on the initial startup but after the car warms us it stops. there is not smoke coming out of the oil cap at all. as far as the car runs it seems good a little rich.

[IanS]

you will have air blowing out of the oil cap because it is a turbocharged engine and there will be a little blowby, if you have no smoke (condesation steam on cold startup is normal) then you problubly have a good running motor, as to when you say its running rich, how rich do you mean, a list of general performance mods could help.

[a100pureplayaz]

front mount safc the air/fuel is not hooked up 10psi boost controller. thats about it i dont really want to do anymore until i get a wideband. also what kind of oil should i use and synthetic or not? thank you so much guys me and my brother both have 240sx's woth sr's so i will be here more often.