Valve Cover Venting

[honestabe]

Well guys i was wondering is there any difference between the internal valveing between the two generations of 1JZ's cause the old ones had the valve cover vent into the y-pipe and the newer one into the Turbo-a pipe, that we know, but was there anything internaly too, i mean anything else inside the valve covers that made them any different?

Adam

 

[bloodasp90]

you stole my thread.. but i was asking this to basicly ask since the internal perssure inside the head as it builds up under higher loads..

 

[honestabe]

I know, I'm a bastard aren't I? I even told you I was doing it too :biglaugh:

 

[honestabe]

Anyone?

 

[honestabe]

Bueller? Bueller? Has anybody seen Feris Bueller???

 

[Dylan JZ]

I think you're thinking too much into this.. I didnt notice any difference between all three sets of valve covers I had internally. my mechanic took them apart IIRC for other reasons. my motor is a 2nd gen TTR motor..

 

[honestabe]

well there was some differences between the 1st and 2nd generation 1J's, that's why me and Eric are asking.

 

[Dylan JZ]

only differences were the turbo a pipe change and a different one way valve on the intake side.. thats the only change thats documented AFAIK and the only one I've seen.

 

[honestabe]

That's what I was thinking but wasn't sure.

 

[OneJSupra]

only differences were the turbo a pipe change and a different one way valve on the intake side.. thats the only change thats documented AFAIK and the only one I've seen.

The stock 1-way bleeder valve on the intake cam cover is known to fail. The recommended replacement is to use 2JZ PCV valve.

 

[honestabe]

I did that upgrade a week after getting my 1J.