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Re: balance shafts Posted by saabsince 93b [Email]  (#972)  [Profile/Gallery]
(more from saabsince 93b) on Fri, 28 Oct 2011 20:46:21
In Reply to: Re: balance shafts, AlS, Fri, 28 Oct 2011 16:39:21 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Removing the balance shafts is a bit controversial in the 95. Nick Taliafaro likes it in a 2.0 engine, but is not too hot for doing it in a 2.3. I believe the shafts were introduced on the 9000. That and heavier flywheel is supposed to make the engine as smooth as a v6.....or that is the idea.
Mas was new OEM from eeuro.
I did put in a new center and driver side trans mount. The passenger side was new a year ago and good.
I had the indy pull the engine and strip it and remove the head. I brought the head and the short block to the machine shop with pistons and bearings. I researched how to block the balance shaft oil passages and the machinist knew how to do it as well. I had the machine shop strip the motor, clean it, paint the block, and bore the pistons and surface the head.
I also brought them the flywheel and pressure plate and they balanced the crank, flywheel, and pressure plate individually.
They then checked the piston weights, miked the crank, and bacically blueprinted the engine. I supplied the WIS specs to them. They then assembled the engine, and torqued the bearings.
They took the head apart, beadblasted it and checked the valves and guides. We replaced all 8 exhaust valves, and 8 guides. We used Canyon guides rather than OEM. My machinist likes them better than OEM, and they are a special bronze alloy. Oem are cast iron and cost $66.00 each! Canyon are $6.00 each.
He removed the old guides and installed the new ones. He ground the valve seats and install the new valves.
I installed the hydraulic lifters and the cams.
Everything went back to the Indy shop and they assembled the engine. I bought lots of new parts. CPS, oil pressure sender, all new coolant hoses, new head bolts, oil pump, water pump, starter, tensioner and pulleys. New serpentine belt. thermostat, temp sensor, cam chain, lots of seal, exhuast manifold kit. eeuro was a good supplier, as well as genuine saab and Iowa City Saab. We also needed 5mm longer bolts of the right tensile strength for the flywheel.
Aero clutch, slave cylinder, new clutch hose.
Cost was about the same as the used engine + things like motor mounts, water pump, starter etc.....but I would have done most of these with the used engine anyway. Once we went for the new engine we did all the "while we are in there" stuff.
I want to run this motor for a very long time and I want it right.
I am not sure where the vibration can be felt. Idle is very smooth. Maybe a little coarser than stock, but very smooth. The engine is very tight so I am sure it will be a little worse when it is looser. My biggest impression is that it is a bit "coarser" at some mid range RPMs. Hard to say. I do know it revs much much better from 1800 rpm or so in any gear. Even driving normally it is in the boost a bit very easily.
_______________________________________ NOW OWN: 2000 95 Imola Red Aero 5 door stick - my ride HAVE OWNED: 2003 95 Black Aero 4 door auto Mary Ann's car 2004 95 Black Aero 5 door wagon 2001 95 Silver Aero 4 door stick 2001 95 Silver Aero 5 door wagon automatic 1999 95 Combi stick 1997 9000 Aero stick red 1988 900 SPG black 1988 900 Convertible black 1985 900 3 door turbo spg kit silver 1979 900 3 door turbo early 900 production 1966 96 2 stroke red 1960 95 wagon red 1959 93b light yellow
, Fri, 28 Oct 2011 08:41:32, Fri, 28 Oct 2011 12:51:39, Fri, 28 Oct 2011 15:14:05, Fri, 28 Oct 2011 15:18:06, Fri, 28 Oct 2011 20:46:21 <-- Viewing This Message
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