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nismo kid, August 24, 2015 in Z31 Series - 300ZX
Degreed the cam
Tossed in the LS7 lifters & trays.
Installed cylinder head dowels. Lightly lubed the threaded sections of the ARP Head Stud with ARP lube. Then threaded them into the block hand tight.
After that I coated my head gaskets with copper spray & slid them over the studs.
Carefully lowered the cylinder heads down over the head studs.After that I lightly applied ARP lube to the washer & threads of the nuts. Then I installed the washers & threaded the nuts down hand tight. Following GM's recommended torque sequence I tightened the 7/16" nuts in 3 equal steps to 80 ft lbs. The 5/16" nuts were torqued to 25 ft lbs.
Continuing on I tossed in my pushrods & set the rockers in their respected places. With the engine in the number one firing position, I tightened exhaust valve rocker arm bolts 1, 2, 7, and 8 to 22 ft lbs. Then I tightened intake valve rocker arm bolts 1, 3, 4, and 5 to 22 ft lbs. I rotated the crankshaft 360° & tightened exhaust valve rocker arm bolts 3, 4, 5, and 6 to 22 ft lbs. Last but not least I tightened intake valve rocker arm bolts 2, 6, 7, and 8 to 22 ft lbs.
After a few rotations I double checked all the rocker arm bolts with my torque wrench. Now that made sure I had no binding issues it was time to install my valve covers & Meling oil pump. I installed the Meling oil pump following their directions. Using 3 .0025 feeler gauges equally spaced between each rotor. Plus 3 more equally spaced .0025 feeler gauges between the largest rotor & pump casing. Then torqued the pump bolts to 18 ft lbs. Then secured pump cover using supplied bolts with a bit Loctite 242.
Next I installed my timing & rear main seal covers using some Alignit tools. These things come in handy. After the covers were aligned I installed the seals.
Moving on I installed the Improved Racing oil pan baffle into my F-Body oil pan. It's a shame that something so nice won't be seen.I also deleted my oil level sensor but using Dorman Drain Plug 65221.
The balancer started looking lonely on my work bench so I slapped it on followed by the ARP Balancer Bolt.Installed the F-Body windage tray & pick up tube. Rotated the engine a few more times to check for clearance. Then tossed the oil pan on.
To finish up the 4.8 I installed the water pump & valley cover.
With the 4.8 together I needed to find a clutch. I originally ordered clutch but they requested I buy theirflywheel. Which informed that would be useless for me. Well that struck a cord with them. So I explained my setup & they told me the LS wouldn't even fit in car. I told them to Google my car which must be mystical unicorn ROFL. Got my refund and began searching for another option. Found a couple options. In 1 hand there was an affordable 700-800$ clutch. In the other there was a 2100$ clutch that was way more than I needed. The 1st clutch appeared to fit my needs & had a nice price to match. So I gave the clutch maker a call. They informed me that my set up would be pushing to the limits of that clutch. They've had people make 800+hp but on less torque producing V6's. Not wanting to be held back by my clutch I went with option 2. It hurt in the beginning. Hell this clutch cost more than my car, turbo, engine & transmission combined lol. But it'll aid me obtain my goals & pay for itself in the long run. Due to the fact it's a twin disc & can be rebuilt. I went with Ceramic & Rigid Organic disc combination per Clutch Masters recommendation. The clutch comes with acustom flywheel that allows you to back the LSX with a Z32 transmission. With that said they're made to order. I was quoted 3-4 weeks for them to make it. I figured it was likely another week for shipping. Boy was I wrong. My clutch was delivered in just 10 days!While I was waiting on my clutch I went ahead & had my starter rebuilt.
I also converted my power steering rack to manual
I ordered some grease fittings for the finishing touch. But I'm still waiting on them to arrive. That way I could grease my steering rack during routine maintenance. I'll add some pics in my next update. Sold vs Factory rubber bushing & Installed manual rack with new sold bushing.
Here's my new clutch & flywheel in all their glory.The standard length LSX flywheel bolts were just a tad to short. So I ordered some extended length ARP bolts #244-2902. Now I installed the flywheel & clutch onto the 4.8.
Decided to clean the transmission up a bit.Installed the clutch fork dust boot, chromoly pivot ball, 350z clutch fork, throw out bearing & sleeve Then I mounted my transmission to my engine.
I finally installed my engine & transmission back into my Z!It's beginning to resemble a car again. Lol
I told myself I wouldn't install the kit until I got it Ceramic coated but I couldn't take it anymore.
With the engine & transmission in I began to install more parts from my collection. Installed the rebuilt starter. Purchased a new brake booster, z32 brake master cylinder, z32 clutch master & slave cylinders.Decided to paint my booster prior to install. Installed the brake booster, brake master cylinder & all the clutch hydraulics.
To finish up the 4.8 I installed my injectors, fuel rails, intake manifold, billet EGR block off, alternator, billetbelt tensioner, & serpentine belt.I also reworked/wire tucked my gold box harness. I relocated the coil packplugs & coolant temperature sensor plug without any cutting of the harness.My main goal is reaching180+mph in a standing mile. I'd also like to trap 135mph+ in the 1/4. I wouldn't mind seeing if this little 4.8 can make 600whp on E85. It'll still be stock bottom end & stock cylinder heads. I'm not really too concerned with a dyno sheet. I'd be ecstatic if I could reach any of my goals with this little 4.8. I should have another small update within the next couple months. Thanks for stopping by.
Need more pics lol no, great build and documented to the max. I forget, what sump did you use with this?
Thanks for the kind words. I'm using the Improved Racing oil pan baffle with the factory Camaro pick tube.
Thanks, and that cleared the power steering bits on the rack OK? Will probably use electric power steering on my Z31 which will allow more front space for the sump.
By using the Dirty Dingo engine mounts 4th gen Camaro/fbody oil pan clears the rack perfectly. Here's the thread on the Dirty Dingo mounts. http://forums.hybrid...ts-for-the-z31/
I also attached some clearance pics with the turbo kit off.
Thanks again, your whole build is a real credit to you.
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