rebuild vs replacement engine
#1
Registered User
Thread Starter
rebuild vs replacement engine
My car has 150k 05 De ... Thinking proactively I got a quote from sw engines... 2245$ for a 38000 mile engine vs ripping the engine out sending to a engine builder for a stock rebuild for more money? I don't know why people rebuild there engine when buying a replacement is cheaper and easier... I plan on a vortech and stating under the stock De limit 400hp. Anyone else compared?
#4
While I haven't done a Z. My general experience is engine replacement is way easier than engine rebuild. The hours to pull and install a motor are still there. Add in machine time and assembly etc.
Rebuilding a short block with stock spec internals is always futile in my mind. (not that the platform is known for high power)
BUT....
Replacing a stock motor with a stock motor isnt a bad idea IMO.
My reasoning behind that is once you crack a motor open, you open a can of worms.
Rebuilding a short block with stock spec internals is always futile in my mind. (not that the platform is known for high power)
BUT....
Replacing a stock motor with a stock motor isnt a bad idea IMO.
My reasoning behind that is once you crack a motor open, you open a can of worms.
#8
General & DIY Moderator
MY350Z.COM
MY350Z.COM
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I'll take the opposite position and state the case for rebuilding. By taking the engine apart and rebuilding, I can spec it the way I want. Built shortblock with low compression pistons and reinforced hardware? Or maybe I need to open up the clearences for a high compression engine slightly. And knowing what type of components, say ARP fastners, Cosworth pistons, Nissan comp oil pump, etc. can be spec'd offers another custom touch. The options for what you can do IF you know what you're doing are endless. By the completion of the project, it's great knowing it's YOUR creation.
#9
Registered User
Thread Starter
I'll take the opposite position and state the case for rebuilding. By taking the engine apart and rebuilding, I can spec it the way I want. Built shortblock with low compression pistons and reinforced hardware? Or maybe I need to open up the clearences for a high compression engine slightly. And knowing what type of components, say ARP fastners, Cosworth pistons, Nissan comp oil pump, etc. can be spec'd offers another custom touch. The options for what you can do IF you know what you're doing are endless. By the completion of the project, it's great knowing it's YOUR creation.
Ipp short block + vortech + tune 5 to 600hp = not a reliable de more heat more parts.
I don't see why people go over 400hp (unless your in serious comp) for another 100hp or so and have to jump through all them hoops. I think 375hp would be a blast in a sub 3000lb car. My car prolly has another 100k in it before it's outof compression being optimistic.
#10
I'll take the opposite position and state the case for rebuilding. By taking the engine apart and rebuilding, I can spec it the way I want. Built shortblock with low compression pistons and reinforced hardware? Or maybe I need to open up the clearences for a high compression engine slightly. And knowing what type of components, say ARP fastners, Cosworth pistons, Nissan comp oil pump, etc. can be spec'd offers another custom touch. The options for what you can do IF you know what you're doing are endless. By the completion of the project, it's great knowing it's YOUR creation.
If your gonna keep the car forever, rebuild it. You will never get that money back. Thats why I still have my mustangs. It is a good feeling to complete something so big and hear it run shifting through the gears etc. On the same note you might baby it knowing how much blood sweat and tears you put into it jsut to blow it up being dumb lol.
Personal experience: Built isn't bullet proof. I have seen motors fail from reusing old parts and seen motors fail because a new part failed during break-in. I have personally shot a hole through a forged piston..... hahaha good times
#12
#15
You would have to get with the shop and the engine supplier to figure that one out.
Last edited by D3vst8r96gt; 02-18-2015 at 11:52 AM.
#16
Bro you sound like you know what you doing. I have 2003 Z that currently has 65K miles. Due to my impatience after replacing my exhausts I neglected to check the oil and took my baby for a ride. A few days after that the engine started to blow some smoke. I took it to a tuner shop and they told me one of the pistons was bad. So now I'm looking to replace the pistons with forget pistons. I'm pretty good with my tools, but I'm afraid to mess up the engine more than what's already done. What other parts would I need in top of pistons, rods, rings and bearings to fix my Z? I don't want to be taken that's why I do most of my work not to mention that save $$$ to invest in my baby. Please let me know when you get a chance. Thanks
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