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Old 01-05-2007, 12:07 AM
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Location: sibley IA
Posts: 182
Make: chevy
Model: cavalier z24
Engine: ld9 2.4l
2.4l LD9 Engine Rebuild

Well i thought i would post some pictures and show you the rebuild.

Heres the built list........


Cold Air Intake
Turbo Tech Solid Trans Mounts
Car Customs Upper & Lower Motor Mounts
Bill's & Stan's Header
2.3l Quad 56mm T/B
Ported HO Intake Manifold
2.5" Custom Exhaust
Manifold Adaptor Plate
Stage 2 JBP LD9 Cams
Ported & Polished 2.4l Cyl Head
Stanless Steel Polished Valves Stock sized
HO Valve Springs
HO Valve Retainers
2.4l LD9 Keepers
Felpro Head Gasket Set
Blocks Oil Passages Bored
Cyl Bored .020 Over
Wiseco 10.5:1 Comp Pistons
Eagle H Beam Rods
2.3l Oil Pump Conv
Knife Edged 2.4l Crank
Modded 2.4l Oil Pan
Lightend Crank Pulley
Lightend Fidanza 8lb Flywheel
Stage 3 Clutch & Pressure Plate
Team Green Lsd Insert

2.4l head i ported my self








spec stage 3 clutch pressureplate and fidanza 8 lb flywheel



on the header is a customs down pipe i made


Here are a few pics of the ports






Polished T/B



JBP lifters


eagle rods vs stock


The resson iam rebuilding
Valves hit the pistons



Also making a custom dash bazel for my gauges oil press egt a/f


And finally the car the engine will be going in




Ill be posting more pics when the pistons come in from Karo at Carcustoms.net

Questions & coments?

Thanks,
Paul Tjepkes
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  #2  
Old 01-05-2007, 03:06 AM
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Make: Holdiac
Model: GTO
Engine: LS2
a dyno would be nice after it gets installed and tuned
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2005 Pontiac GTO LS2/T56 - 11.7 @ 120

2004 Pontiac GTO LS1/T56 - a 3100 grand am could beat it.
  #3  
Old 01-05-2007, 06:09 AM
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Join Date: Sep 2003
Location: Pittsburgh, PA
Posts: 2,098
Make: Pontiac
Model: Grand AM
Engine: 2.4L 5spd
Everything looks very nice. Are you going to get the turbotech upper mount to replace the insert? Whats the total cost?
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Old 01-05-2007, 10:53 AM
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Location: sibley IA
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Make: chevy
Model: cavalier z24
Engine: ld9 2.4l
well rite now i have spend a total of about $3200-$3500 on every thing.
The only thing i need yet is block and crank work
  #5  
Old 01-05-2007, 02:56 PM
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Join Date: Apr 2003
Location: Las Vegas
Posts: 1,434
Make: 2.4L
Model: Pontiac
Engine: Grand Am
swap out that a/f gauge w/ a true wideband.

260hp.
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v.1.0.GT30R - LD9 430+hp
v.2.0.GT4088R - new build - same car - more power
  #6  
Old 01-05-2007, 03:31 PM
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Make: Holdiac
Model: GTO
Engine: LS2
hmnn...

may be a nice list of mods for myself to shoot for.
  #7  
Old 01-05-2007, 03:42 PM
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Location: Mankato, MN
Posts: 575
Make: Pontiac
Model: 93 Grand Am GT
Engine: Quad 4 HO
that is going to be a serious car when it's put together! nice!
  #8  
Old 01-05-2007, 07:34 PM
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looks like a good build! the exhaust ports on the head look good, i'm not so sure of the intake though. anyways good luck with it and keep us updated!
  #9  
Old 01-05-2007, 11:12 PM
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Location: sibley IA
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Make: chevy
Model: cavalier z24
Engine: ld9 2.4l
yeah the exhaust is polished pretty good.
But on the intake side iam going to be taking it apart again to knife edge the lil please in between the two valves and poish it a bit more.
  #10  
Old 01-06-2007, 12:48 AM
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well i know most of the time camera's done do justice for ports on a head anyways but if your going to pull it back apart again, you should knife edge the exhaust joiners also.

how long do you figure untill its done?
  #11  
Old 01-06-2007, 05:47 AM
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Make: chevy
Model: cavalier z24
Engine: ld9 2.4l
i just heard it wasnt inportend to do the exhaust because it flows outward around that peace and for the intake side because you have air flowing in hitting the lil peace so when its knife edged it cuts the air apart flowing better.

what are the benifits on the exhaust side??
Probley better flow but any ressoning on why.
  #12  
Old 01-06-2007, 12:56 PM
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Quote:
Originally Posted by Paul View Post
i just heard it wasnt inportend to do the exhaust because it flows outward around that peace and for the intake side because you have air flowing in hitting the lil peace so when its knife edged it cuts the air apart flowing better.

what are the benifits on the exhaust side??
Probley better flow but any ressoning on why.
its all about smoother transision and opening up the ports, taking that exhaust port and knife edging it makes a smoother transmission from each valve to the opening meaning less "swirling" it also opens up each side just alittle bit more. You have to think and imagine how air flows through the port.

a good test for port flow is a wet test to see how smooth your port is, take a pressure washer to the port and see how smooth the water comes out, if you have a noticable spot where theres a solid stream instead of "misting spray" then there is something there that is disrupting the flow...
  #13  
Old 01-06-2007, 01:06 PM
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Quote:
Originally Posted by Twisted View Post
a good test for port flow is a wet test to see how smooth your port is, take a pressure washer to the port and see how smooth the water comes out, if you have a noticable spot where theres a solid stream instead of "misting spray" then there is something there that is disrupting the flow...
???? a pressure washer? "misting spray"? those two do not seem to go together. i don't understand.
  #14  
Old 01-06-2007, 02:55 PM
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Quote:
Originally Posted by zppr17j View Post
???? a pressure washer? "misting spray"? those two do not seem to go together. i don't understand.
go try it you'll find out, as the water goes through the port it will "fan" out into a mist type spray. (no i'm not talking into a garden hose type mist) but it'll be smooth, no bumps or heavy streams of water.

if i get a chance i'll dig out my 2.4 head and do a wet test on it to show everyone.
  #15  
Old 01-06-2007, 04:21 PM
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Make: Holdiac
Model: GTO
Engine: LS2
Quote:
Originally Posted by Twisted View Post
if you have a noticable spot where theres a solid stream instead of "misting spray" then there is something there that is disrupting the flow...
?

don't you want a nice solid stream coming out of the port?
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