07-23-2009, 01:07 PM
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| Senior Member
Join Date: Jul 2006
Posts: 485
Car: 1989 GTA Engine: 350TPI w/ Speed Density Transmission: 700r4 Axle/Gears: Borg warner 3.27 | To rebuild or to not rebuild?
Hey guys, if you read in my other thread, I have a knock coming from the lifter galley. I recently tore the intake manifold off and checked my roller lifters. Upon taking the valve cover off, I found metal shavings. It was nothing the oil filter couldn't handle, but I'm sure they're throughout the engine.
The engine has a light miss at idle and during acceleration and has lost power (most noticeable after it shifts into 3rd or 4th gear), but has decent power at full throttle. I believe that whichever lifter is bad, tore at my camshaft and rounded off one (or more) of the lobes.
I have every intention of rebuilding the motor over the winter while the car is put away, however, I would like to have a fun car for the remaining summer and half of fall. I'm obviously going to replace the camshaft and all 16 lifters, but would you recommend a full rebuild now? Or could I wait until winter time to do the full rebuild, and just replace the valve train at this point. The engine only has ~80,000 miles on it, it is mostly stock and will remain N/A until after the full rebuild. It's getting painful to drive it. I'm tight on cash so a rebuild now would just be with economy grade parts, not even ARP studs, however if I wait till winter, I can do a much better rebuild more suitable to my plans.
What are your opinions, could I just replace the lower valve-train and run it till storage? Or is my only option a thorough rebuild. Thanks in advance! | | |
__________________ Don't worry, I wouldn't take me seriously if I had a name like mine either. (aka douchermann)
1990 Formula - GONE!
1989 GTA - 350/700R4 from formula, straight exhaust with side exit by passenger tire. Engine is TPI with speed density setup.
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