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Engine Rebuild Question....

Dil-Dog

By Dil-Dog,
in R Series (R30, R31, R32, R33, R34)

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Dil-Dog

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Hello,
i am building a 350z drift missile with a florida imported Aristo 2jz GTE VVTI


My partner and I are trying to make it as "budget friendly" as possible while still retaining reliability and decent performance. We have a build list of new parts such as top mount manifold, turbo, gaskets, studs, oil pump, water pump etc etc. 


So here is my question.... while the engine is out, we were planning on doing all the rotating assembly bearings and we were wondering If it would make sense that we pull the pistons out, clean it up, then replace all rings, then finally hone the cylinder bores with a honing pad/stone ourselves. 

I know that you shouldnt trouble the rings and bores if you are making good compression but if the engine is out... wouldnt it be a good idea? Is this too risky? i have seen a few people who have just got a hone and new rings and reused the stock rods and pistons but i would like to know if honing is something you can do your self and still achieve good results. 

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https://www.sau.com.au/forums/topic/481218-engine-rebuild-question/
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Dil-Dog Collaborator

Dil-Dog

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EDIT: look i know that you  "CAN" do it your self and there is a few videos on youtube who show them selves at home with a drill and what not but i want to know if what they are doing is wrong and if they are just a set of bone heads. so yeah thats my question... lol ?

hardsteppa Grand Master

hardsteppa

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Yes, you can. The main issue is the drill speed too fast and it cuts too shallow a cross pattern. Something slow, eg cordless drill on low speed and a fast up/down motion, will work fine. Does't need long to work. Yes you should replace with new rings while out, and from there yes you should re-hone.

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phelbas Enthusiast

phelbas

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  On 24/09/2020 at 6:42 PM, Dil-Dog said:

 

I know that you shouldnt trouble the rings and bores if you are making good compression

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If you pull it to pieces and the cylinder bores don't show much wear and the rings look good why touch that at all unless you are paying to do it right?

GTSBoy Grand Master

GTSBoy

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  On 24/09/2020 at 10:55 PM, phelbas said:

If you pull it to pieces and the cylinder bores don't show much wear and the rings look good why touch that at all unless you are paying to do it right?

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Actually, This ^.

Just because you pull it apart doesn't mean you automatically do anything. The only thing you have to do is carefully inspect and measure everything. If the bores are round and especially if there is no nasty lip at the top and especially especially if the hone marks are still visible, then doing anything to the bores is unjustified. You always assess what you have before deciding what you're going to do to it.

Unzipped Composites Rising Star

Unzipped Composites

Posted
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  On 24/09/2020 at 11:28 PM, GTSBoy said:

You always assess what you have before deciding what you're going to do to it.

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And then forget what you decided and mash the go button on that Nitto stroker kit.

  • Haha 1
phelbas Enthusiast

phelbas

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  On 25/09/2020 at 1:07 AM, Unzipped Composites said:

And then forget what you decided and mash the go button on that Nitto stroker kit.

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what are you talking about.

PS if anyone wants 6 HKS step 2 2.8L H-beam rods I got from yahoo auctions on a whim, let me know. Cheap.

Unzipped Composites Rising Star

Unzipped Composites

Posted
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  On 25/09/2020 at 4:16 AM, phelbas said:

 

what are you talking about.

 

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Humorous reference to the natural tendency to completely blow the budget despite the intentions going into the build. 

phelbas Enthusiast

phelbas

Posted
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  On 25/09/2020 at 5:13 AM, Unzipped Composites said:

 

Humorous reference to the natural tendency to completely blow the budget despite the intentions going into the build. 

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i was attempting my own humorous reference to accidentally purchasing hks h-beams (and a billet crank, which a workshop “lost”) 

hardsteppa Grand Master

hardsteppa

Posted
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hey, each to their own...but, if i'd picked up a 2nd hand unknown engine, I had it apart, and was rebuilding it to ensure it was fresh and ready to last for me, there's no way i'd be sticking with the rings that were in it; i'd replace them along with bearings, water pump, timing belt, anything else that might " look fine". A set of rings is like 200 bucks, a hone does effectively nothing to the bore size, and pulling out and dismantling the engine is one Fkton of work, as anyone that's ever done it knows, so replace them while it's all apart, if budget isn't the utmost concern.

  • Thanks 1
r32-25t Grand Master

r32-25t

Posted
Posted
  On 25/09/2020 at 8:57 AM, Duncan said:

Are you putting a 2jz in a 350z for a cheap project?

4th time this week, thanks skid factory.

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Adam lz has put more Jz engines into cars then the skid Factory

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