Motor Swaps

niall · Joined: 06 Sep 2007 Posts: 153

Ok so it's not a conversion but i am doing a full rebuild so there will be alot of usefull information.

the full link is here http://www.aus300zx.com/forum/showthread.php?t=266103

but ill cut/paste the most important stuff here

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As most of you will remember the headgasket failed on my zed after being badly overheated. i have still been driving it for the past 2 months anyway but today i finally pulled the engine out. lucky for me i have a 2 post hoist and snap on tools so it makes it a bit easier.

I have taken about 100 photos throughout the removal so if amyone needs to see a pic of something in particular or measuremnets of something then let me know.

Car on the hoist.

The current Zed replacement

The engine bay at 9am today

Half stripped out

This is how i looked when i left at 5pm

I started at 9am on my own, then the young apprentice ( a different one) came to help and then my brother came just as we were taking it out. i decided to drop the box out from underneath because i wasnt sure if it could be removed with the motor. it was real easy to take out, it only took us about 15 mins to remove it! from start to finish it took us 5 hours to remove the engine/gearbox and all the goodies. i dunno if this is a good time or not , i guess it is . we decided to take the front bar and a few things like that off since ill be putting on the new AB flug bumper anyway, i forgot to get the AC degassed on friday and my auto elec doesnt work on saturdays s we pissed around to take the engine out while leaving the AC compressor and pipes still sealed up in the bay.

Once the engine was out i pulled the plenum , LH turbo+ manifolds, water pump, cambelt covers and a few other things . this took me about 90mins. then a few beers, fish and chips and home i went.

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niall · Joined: 06 Sep 2007 Posts: 153

well about another hour got us to here.

with a headgasket that is not badly blowing it is difficult to see what has gone wrong. this picture iis out of focus but you should be able to see that rust colour on the headgasket ring and the top of the bore.

another hour got us here. the internals were in remarkable condition, it could have easily gone without a rebuild except for there was quite a bit of piston to bore clearance, i will measure it tomoro but at an estimate i would say its over 6 thou which is quite a bit

here you can see the main bearing girdle, good engineering

pic of a piston with my thumb for reference. you can see the skirts are very short
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niall · Joined: 06 Sep 2007 Posts: 153

Well i got the word back from the machine shop that the bottom end is in perfect condtion and could do with just rings and bearings. but since it has been off the road long for a while i figure i may as well go all out, at this stage im gonna sink big money into the block, so it can take what ever i thow at it later on. Some of the things we're looking at

JE forged pistons with inverted ring placement
Forged 4340 steel rods with 7/16th ARP studs
ACL race series bearings
Total seal rings
Crack tested and nitrided crank
ARP main stud kit
Copper head gasket

On the head and manifolds,

Port and polish the head
extensive port work on the factory exhaust manifolds
Post and polish the secondary intake manifold and match to plenum
Drill and tap exhaust manifold for Nitrous jets, (for nitrous spooling)

Thats most of what will be done on the engine, i have not decided on the bolt on stuff yet, but maybe 2 KKR380's custom dumps into a twin 3 inch de-cat sytem. with 2 custom double size side mount coolers, nismo injectors, twin fuel pumps and a wolf 3d
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niall · Joined: 06 Sep 2007 Posts: 153

Here are the latest pics. I got stuck into this stock motor build. Got a rebuild kit for well under 1000 bucks. all good quality too. The only thing OEM i got is the headgaskets and headbolts.

I did the coolant gallery modification but i knocked the core plugs back in the rear before i took photo's , so the ones i got will have to make do.

I did the cylinder oning myself and it turned out real nice.

The pics pretty much do the talking, so here goes.

[IMG]

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niall · Joined: 06 Sep 2007 Posts: 153

Here's some pics for you fellas of my FMIC installation. Im not finished yet but i thought id get some pics up as i go.

Ive been taking a while because im building guides and ducts, also cutting the front bar and messing around with the air filter.

Here's some pics

I havent finished trimming this bracket but it gives an ide of where i mounted it

Same thing here. i havent finished these. and i think this is where the splash tray goes so ill figure something out there

First cuts of the bar. i think ill angle the cuts down to meet the lower area

The air guide buit onto the reo bar

Somewhere close to where the filter will go. it will be protected from water and that once im done

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Heres a pic of the air guide built onto the reo bar

Again. Not finished yet Very Happy

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Here's a mock up of the side guides. It looks better in person.[/QUOTE]
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Chrispy · Joined: 03 Nov 2007 Posts: 53 Location: Brisbane

looking good Niall. How long till she's running again?
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Having dillusional dreams of V8 Z happiness...

niall · Joined: 06 Sep 2007 Posts: 153

Thanks Chris. Im hoping to finish in a month, maybe 6 weeks, it all depends on parts and machining time, the heads are the big hold up at the moment.

As soon as its done and run in, ill take a spin up to Samford and see what u think of it in person.

I gotta get it finished soon since Ash is "camming" his SS Wink

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