View Single Post
Old 04-06-2009, 11:27 PM   #25
Scooby Specialist
Member#: 33458
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: PA
Your BOV sounds lame
93 RX7+09 Forester


Originally Posted by flycaster View Post
That's a good guess - if you put 2618 slugs in and set them to the usual amount of clearance (.003 - .004"), there's no way you're going to get stock-like cylinder/piston/ring wear. Every time you warm them up the pistons wobble around until they get hot and swell. That's simply the trade off for having pistons that are far more tolerant of abuse (i.e., detonation).

FWIW, I have a little over 40K on my $4K Cobb motor. It still runs great, makes beacoup power, and has good compression...but it is starting to burn more oil and the leakdown loss is, slowly, starting to go up. I figure maybe another 15K miles, 20K if I'm lucky, and then I'll have to make the decision to either rebuild/replace it and rebuild the heads, or move on to a different car.

Having said that, I'd do it exactly the same way all over again. The loss in longevity is worth, imo, the substantial increase in strength and ability to withstand the inevitable "uh oh." Simply put, I knew it was going to wear faster, but I also knew it wasn't going to catastrophically break and leave me stranded out in the boonies somewhere. The old "pay to play"...end of story.
...Yea, mine has been developing a thirst for oil.
* Registered users of the site do not see these ads.
CKxx is offline   Reply With Quote