MR2 Roadster Owners Club

The Workshop => Performance Related => Topic started by: inside on August 18, 2016, 15:16

Title: 2zz cam wear and replacing camshafts
Post by: inside on August 18, 2016, 15:16
So today my mechanic called me and he said he noticed cam lobe wear when fixing leak on the rocker cover... and said it must be fixed at once.

I went to look at it and got cam lobe wear on 3 lobes on the intake camshaft. Exhaust camshaft is fine. He said I need to replace at least intake cam and all 4 rocker arms.

Now I'm contemplating if I should upgrade camshafts since I must cover some parts and work anyway.

I've been looking at se7en st2 cams, and still waiting for availability response. However, I still need rocker arms which I can get good used ones from se7en (separately not available).
My mechanic said if I choose new cams, I should also use new rocker arms.. now that doesn't seem to be the practice when installing stage2 cams.

Any ideas what to do?
Title: Re: 2zz cam wear and replacing camshafts
Post by: inside on August 18, 2016, 15:19
Off course, the most reliable and cost effective option is to buy intake cam + 4 rocker arms... which comes as a set for £300-ish.

Stage2 cams with 4 used rocker arms would be around £600-ish, but with all 8 rockers arms new around £1100 (and 2 new oem camshafts).
Title: Re: 2zz cam wear and replacing camshafts
Post by: JoeCool on August 18, 2016, 15:56
I'd buy the intake cam and followers for $200 from Ebay (if available) and sell the camshaft separately to get cheap followers!! AFIAK the stage 2 cam uses standard followers.
Title: Re: 2zz cam wear and replacing camshafts
Post by: cabbydave on August 18, 2016, 19:03
Check the oil spray bars in the rocker cover as well, there is a reason the cams have worn
Title: Re: 2zz cam wear and replacing camshafts
Post by: inside on August 18, 2016, 19:39
Dave: Cheers, will check that they flow ... visual was ok. Can't really imagine what can go wrong there, as the engine is pretty clean otherwise...
Title: Re: 2zz cam wear and replacing camshafts
Post by: inside on September 10, 2016, 21:05
Just an update. In the end I decided for new stock intake camshaft (comes with rockers) and got the car back this week.

Works for now, even seems to give out a bit more power.

For the peace of mind will send oil to analysis after few hundred miles, so that I'm sure nothing is "wiping" any more  s:) :) s:) .