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Old 02-16-2012, 12:16 PM   #1
dyno
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Smile OG 2003 350z engine rebuild: Please advise

Hey Guys,

My baby got hurt. I am working with Project Import in Orange, California. The guys told me there was metal in the engine oil when they drained it and that I would have to either replace the engine or get it rebuilt. I would like to get some of your opinions on what they have suggested so far. I had the option to replace the engine with a salvaged one for around 3k but we can only find engines with 100k plus in milage. I only have around 55k miles on my motor and have always wanted to rebuild the engine and keep it NA. Trying to go for mods that will offer the most bang for buck. Really appreciate any advice you guys can give me in terms of mods to do and which manufacturers parts to go with. Unfortunately, I have a lot to read and learn as I do not know much about engines and rebuilds. I am going to spend the weekend reading through some threads so I can get a better grip on my situation. I have been quoted $9,000 so far and do not want to spend much more than this. No intention to go F1 in future. Thought I would get started getting some opinions, spend time learning, and then finalize and get started with the build. I've been out of the game for a while now and am excited about this, thanks ahead for any advice

Thermal clean block and heads
Surface mill block and heads
Compete valve job on cylinder heads
Bore and hone cylinders .25mm over
Micropolish crank shaft
All new bearings
Balance of rotating assembly

Manley Sport Compact - Connecting Rods - NISSAN 3.5 VQ35DE/T H/B

CP Piston Nissan - VQ35DE 3.770 (95.75mm) +0.25mm 1.167 11

Nissan OEM cylinder head gasket set

Nissan OEM engine gasket set

Assembly of engine - reassemble new engine with all new timing chains. using engine gasket set. replace all gasket as assembling. all parts torque to factory specs as needed. used Nissan sealant on all necessary sealing surfaces. Installation of aftermarket camshafts

Kelford RaceCams - Mechanical Cam Set; Stage 1 NA Cam; For Mild Normally Aspirated Engine Builds; For Fast Street Performance

ARP HEAD STUD KIT: NISSAN VQ35

EXEDY S/P ORG CLUTCH KIT: 350Z 03-UP/G35 03-UP

DC SPORTS HEADER: 350Z 03-04/G35 03-04 (CERAMIC)

Turbo XS Race Pipe Nissan 350z(2003-2006)

SKUNK2 INTAKE MANIFOLD SPACER: 350Z 03-06 / G35 02-06

Over bore of throttle body

DENSO IRIDIUM SPARK PLUG

Nissan OEM thermostat assembly

Nissan OEM thermostat gasket

Nissan OEM oil filter
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Last edited by dyno; 02-16-2012 at 01:31 PM.
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Old 02-16-2012, 02:17 PM   #2
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We're there any signs of a problem?

How do you know they're not full of isht?
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Old 02-16-2012, 03:59 PM   #3
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Hey Igear, I'm not sure. They simple stated that they found metal in my oil and that this means that my engine is toast. Do you think I should get a second opinion on the car first? Or take the car to a nissan dealership and have them inspect it? In the past I've noticed the nissan dealership has lied and tired to get me to fix things that didn't need fixing so I really do not know who to trust. The car had a sound coming from the flywheel/clutch, shut down on the road and wouldn't start up again, and I had it flatbeded to the shop. The shop said that the engine did start again. I told them that I had been using the car for 3 days on low oil, and they replied that the engine was gone.
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Old 02-16-2012, 06:46 PM   #4
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I would highly recommend getting a second opinion, especially since there were no warning signs you mentioned. If it is going to cost you 9 grand, a second opinion is well worth your while.
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Old 02-16-2012, 10:45 PM   #5
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suspect imo
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Old 02-17-2012, 05:45 AM   #6
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cant comment price wise as too many variables, but skip the throttle body boring
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Old 03-08-2012, 03:10 PM   #7
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Default Engine is dead

Took it to Nisan, engine is dead

Dealership
New Engine: $12,000
Used Engine (80,000 miles): $8,000

Ended up finding an engine with 40,000 miles for $2k

Mods: DC Headers, Motordyne ART test pipes, 4.08 final drive, Quaife Diff, Used Engine Install. All for around $5,500
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Old 03-16-2012, 06:11 PM   #8
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Are you dyno tuned? what is your numbers?
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Old 03-16-2012, 07:21 PM   #9
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Still sounds high to me. Be patient. There are bone stock de's
For $800 in good shape if you're patient. Watch eBay and cl all around your market.
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Old 04-14-2012, 03:10 PM   #10
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Oh man! The Quaife and 4.08 Gears are so awesome!. I ended up getting a new ACT clutch as well. Car drives better than ever, and has dramatically improved in acceleration. I am going to get the ART pipes installed and get the UPREV tune and finally get the dyno done. I will let you guys know where I am at afterwards. Thanks for the info guys
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Old 05-05-2012, 08:40 PM   #11
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How much did you end up spending on everything? which route did you go..new motor or just rebuild? it sounds like rebuild but the space in dates makes it a little hard to interpret.
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Old 05-06-2012, 02:33 PM   #12
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Hey

I ended up skipping the rebuild. Just got a used engine with UR Headers, MD ART Pipes, Quife + 4.08, and Uprev. People were so right about tuning, by far the best thing to do once you're done with all the bolt-ons. The ART pipes with the FI exhaust sound sooooo damn beautiful. Thanks for all the input guys
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Old 05-08-2012, 01:28 PM   #13
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Up to 301whp / 280tq
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Old 05-08-2012, 01:34 PM   #14
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Approx. how much $$$ did you end up dropping?
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Old 05-08-2012, 01:37 PM   #15
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Around 8-12k for everything I've done with the car. Had a lot of fun along the way and thoroughly enjoyed the NA route!
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Old 05-08-2012, 08:56 PM   #16
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Quote:
Originally Posted by dyno View Post
Up to 301whp / 280tq
Prooooooveit.

I am getting 4.08 gears now. Glad to hear you like.
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Old 05-09-2012, 06:47 PM   #17
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Quote:
Originally Posted by dyno View Post
Up to 301whp / 280tq

301whp on a DE without cams??
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Old 05-10-2012, 08:46 AM   #18
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Sounds like he was on the church dynopack to me....closer to 265-270whp on a dynojet (SAE).
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Old 05-10-2012, 11:34 AM   #19
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looks like he lives in MA though
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Old 05-10-2012, 04:16 PM   #20
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Looks like Orange County, CA to me...
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Old 05-10-2012, 04:16 PM
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