LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What's involved in a complete tune up?

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Old Mar 11, 2004 | 06:01 PM
  #1  
kevinCHOPTICON's Avatar
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What's involved in a complete tune up?

I have down now:

New NGK plugs and Accell 9000+ wires
Mobile 1 10W-30 Oil and Filter
Flush cooling system and add 160* thermostat
New filter (K&N cai)
Transmission and Diferential oil
Bleed breaks and fill with new brake fluid

Any others?

Is this too daunting to do by myself? I have off next wednesday so I was thinking of getting the materials this weekend and servicing my Z on wednesday.
Old Mar 11, 2004 | 06:06 PM
  #2  
BlackDog's Avatar
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From: LakeLand, Florida
Power steering fluid
Old Mar 11, 2004 | 06:17 PM
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ibanez6rg's Avatar
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From: Cincinnati, OH
Fuel filter.
Old Mar 11, 2004 | 06:20 PM
  #4  
Spinner's Avatar
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From: Fort Benning, GA
Oil Change
Plugs/Wires
Air Filter
Fuel Filter
Trans Filter (optional)
Fuel Injector Cleaner/Throttle Body butterfly cleaner
Trans Fluid Flush
Power Steering Fluid Flush
Diff fluid change (Be sure to use limited slip additive)
Tire Rotate+Balance if applicable
Brake Inspection
Oxygen Sensors
Old Mar 11, 2004 | 06:39 PM
  #5  
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The only thing I see missing that's improtant is the Fuel Filter.
As far as doing these tasks yourself I have the following advise

1) Have a good set of tools and some basic experience working on cars, the less you have of these the more time you should allow yourself to learn

2) Get organized the night before and start early because you have afull days work ahead of you.

3) Have enough ramps and or jack stands to get you car well elevated, that will significantly help with the Fuel Filter, tranny and Differential fluid changes.

4) You will need a new gasket for the differential cover because if it's still the stock cover you will have to remove it to drain the fluid. And you will need to pick up some Friction Modifier to add to the gear oil (ask the parts store or GM dealership for some)

5) You didn't say if you had an automatic or manual, if you are doing a change on an Automatic again you will need a new gasket for the pan and filter, keep in mind that you will only be replacing about half of the fluid because some will remain in the Torque Converter. For an automatic it might be worth paying to have the fluid flushed/changed at an Quicky Lube to thoroughly change all of the oil (about $69.

6) The plug and wires will take you the most time (~3-6 hours), here's where it helps to have a large variety of extensions, short and long spark plug sockets and lots of patience. Do a search for tips to see others experience but I found the following helped.
- disconnect the battery
- remove the alternator (allows access to #2 plug and is required to reroute wires)
- the front two can be accessed from the top while standing
- the middle four by laying across the engine and reaching over
- the back two from underneath with your head toward the rear of the car and your feet sticking out the front.
- remove and replace one wire at a time so you don't get mixed up (you can use a Magic Marker to lable them if you want)

Finally, I would recommend that you break it up over 3 days
- Oil & filter, air filter, coolant and thermostat day one, be sure to bleed the system after (doing the throttle body bypass mod is also a easy way to get a few extra HP, a 3/8" male/male nipple fitting and 2 small hose clamps, do a search for pictures/tips)
- Plugs and wires day two
- Fluids and fuel filter day three
- Wait to bleed the brakes until you have to change the pads and have a bud to help pump while you are under the car (not sure what the recommended interval is for brake fluid but it's probably the lowest priority)

Have fun
-
Old Mar 11, 2004 | 06:48 PM
  #6  
93Z4ME's Avatar
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If yours is a 95 or later here is a link for the Throttle Body Bypass

http://shbox.com/1/tb_bypass.jpg
Old Mar 11, 2004 | 06:49 PM
  #7  
kevinCHOPTICON's Avatar
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thanks guys that really helped.
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