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Engine Rebuild!

  #1  
Old 11-15-2010, 12:43 AM
R2P
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Default Engine Rebuild!

So a little while back my Blazer started knocking and I thought it was rod knock. Bought a new crank and main/rod bearings from autozone and pulled the engine.

Long story short, the bottom end was showing wear but everything was still good, leaving me with only one possibility remaining for the knock: Stuck lifter.

Since the engine was already out I decided to replace... everything almost.





Open crankcase, everything looked fine.


Right now I got the intake and heads off and pistons out, ill take a pic soon.

Ordering parts tomorrow, here's the list:

http://www.lunatipower.com/Product.aspx?id=2366&gid=297

http://www.summitracing.com/parts/CRN-10751-12/

http://www.summitracing.com/parts/FEM-1855M/

http://www.summitracing.com/parts/SLP-224-43469/

http://www.summitracing.com/parts/SLP-260-1738/

http://www.summitracing.com/parts/SLP-55403B/

http://www.summitracing.com/parts/SLP-E-920K/

http://www.summitracing.com/parts/STL-WH699P/

http://www.summitracing.com/parts/ACC-130141/

http://www.summitracing.com/parts/TAY-84235/

http://www.summitracing.com/parts/PSM-70-1355/?rtype=10

http://www.flowmastermufflers.com/sh...oducts_id=4156

http://www.summitracing.com/parts/LUN-73943-12/

http://www.summitracing.com/parts/ARP-233-3701/

As well as honing the cylinders and getting a 3 angle valve job done.

Well, that's where I'm at with it. Questions? Comments? Suggestions?
 
  #2  
Old 11-15-2010, 12:56 AM
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Looks like a good start, gonna do anything with the pistons ?
 
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Old 11-15-2010, 01:06 AM
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New pistons are on the list. I don't really think I need them but eh, why not? Only bottom end parts I'm reusing are the rods. If I was gonna replace those I'd go with lightweight ones but they're super expensive.
 
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Old 11-15-2010, 01:12 AM
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why a 2.25" in n out muffler? or are you going duals?

I thought the oem was 3" in and 2.25 offset out?
I would go 2.5" myself.
 
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Old 11-15-2010, 01:17 AM
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When I had my catalytic converter changed out they told me to get one 2.25" in/out... so that means my OEM piping is 2.25" into the muffler, the pipe on the other side of the muffler looks to be the same size.

I'll measure before the muffler is ordered to be sure though, thanks.
 
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Old 11-15-2010, 02:30 PM
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Originally Posted by R2P View Post
When I had my catalytic converter changed out they told me to get one 2.25" in/out... so that means my OEM piping is 2.25" into the muffler, the pipe on the other side of the muffler looks to be the same size.

I'll measure before the muffler is ordered to be sure though, thanks.

Go 2.5 and dont do duals.
 
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Old 11-15-2010, 05:05 PM
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What about single in/dual out in 2.25"? I have that on mine & it sounds great but not offensive. Having a B/L helps a lot with installation if you're going to route the other out the drivers side.
Depending on the year of the blazer, I don't think a 'true dual' setup is possible.
 
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Old 11-18-2010, 07:16 PM
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Ordered a 2.5" I/O. Some parts came in today according to UPS tracking, I'll check when I get home. Are the head bolts on these engines reusable? Forgot to order those but if they're not needed then I'll leave 'em out.

Also, can anyone link me to a good guide for setting cam/ignition timing? Getting the timing right is my biggest concern in this rebuild. Especially considering I've never taken an engine apart before. :P
 
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Old 11-18-2010, 07:45 PM
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most headbolts are TTY (torque to yield). I would not recommend reusing them as they stretch when you tighten them.
 
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Old 11-21-2010, 11:25 PM
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Okay all the parts arrived except rocker arms, valve springs, and head bolts.

Honed the cylinders yesterday and will be cleaning the pistons off sometime this week to put the new rings in, then the crank can be installed.

Here's the block before it was honed:


Dirty little pistons:


Does anyone know what type of lifters come stock in these engines? My old lifters are rollers, I thought roller lifters were more of a performance part.
 

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