Hey Fellas

A few days ago when I started up my S I noticed that it was idling kind of rough and wouldn't rev real smoothly while driving. I also noticed that if I hit the throttle while it was cold at low RPMs a faint "tick tick" noise would come from under the hood for a second or two.

After the car is warm, no problems. I haven't been VTECing since the issue surfaced, so I'm not sure if I'm making all my power but things seem fine after the car is warm. I'm takin my car in to Church Auto tomorrow but I was wondering if you fellas had any thoughts/ideas? Thanks

 

My guesses:
-timing chain tensioner (or valve related issue)
-MAP sensor

 

Just got back from Church Auto

xviper, it looks like you hit it on the nose...appears to be valvetrain

Sean had the cylinder head stethiscoped and said that there's definitely some unwanted noise coming from the front half of the head, and that it could be a retainer

My S will be headed over to Tony Fuchs to have the work done. I might throw on some 650cc injectors and a 9 lb pulley while its there.

What I'd like to know is, how did my valvetrain fail when I haven't been reving past 8K? My stock injectors are maxed out past 8400 RPM so I've got a soft-touch limiter at 8200 RPM for the time being. Maybe its just time for a new valvetrain (my S has over 100K miles on it)

Any thoughts?

And does anybody know how much one of those super trick high-flow heads from alaniz go for?

 

there is one for sale right now from bigpurp! grab it if you can!

https://www.s2ki.com/forums/index.php?showtopic=320652

 

Does anybody know how well an Alaniz head will work with a daily driven S?

I'd like to pick one up but I don't want to sacrifice too much drivability because I drive my S about 100 miles a day

Anybody out there running an Alaniz head on a daily driver?