Alex's Nissan 350Z (High Compression) Engine Build!! By HMS

[Hybrid Motorsports]

When Alex's beautiful 350z developed a rod knock, He decided an oe replacement would do the trick, Well when the replacement failed to be in less than satisfactory condition, He decided a engine build would be the best thing for peace of mind....

But he also decided stock would be a bit boring, & forced induction is so cliche He decided to spice things up a bit and go the high compression n/a route!!

Sweeeetttt!! This should really wake up the big VQ!

So we began:



























link to shop forum:Hybrid Motorsports - Tampa Racing

[Hybrid Motorsports]

So we got the engine separated from the transmission & on the engine stand, And began the tear down process:

[Jared Noriega]

Go balls out and press the "win" button

[tuner88]

Go balls out and press the "win" button

[Hybrid Motorsports]

Got a bit more into the engine:



































Almost ready to be machined.

[Hybrid Motorsports]

Well we got the engine completely disassembled and the finding were a bit more than what we expected.













We found catastrophic bearing failure on 2 rods & 2 mains:

The writing on the bumper when the car came in was of fitting description:

[Hybrid Motorsports]

Well Now some goodies



Some new headers for a more freer flowing engine:



High compression +20 wiseco forged pistons:





Piston comparison:







Eagle H-beam rods:





Rods comparison:





ACL bearings:



OEM gasket kit:

[Hybrid Motorsports]

So we gathered the parts and brought it to the machine shop, The machine shop of choice was Engine Lab of tampa.

This shop was chosen due to the quality work that has been put out from them, And the fact we've heard good things about their customer service.

So the owner Dave Deegan & his staff were very informative & was nice enough to give us a full shop tour of their facility:

[LongFellow]

How much power are you aiming for? If you really want to make some power read up on SG-Motorsports 350z longtube headers and intake manifold development.

SG-Motorsport | Development

[bikeimports]

Appreciate the info: As far as I know there is no real goal at the moment, Things change by the day with this build, Hopefully Alex will chime in and shed some light.

[Hybrid Motorsports]

So we've finally gotten everything back from the machine shop & the work was excellent as we expected:

The block was bored & honed cylinder matching the pistons, The crank was too far out of spec and was not able to be machined so a replacement was purchased and machined within spec.

The Bottom end was fully blueprinted and balanced (balanced rotating assembly)

You can't see in the card below how much it was off: initial spin .vs. final spin











Arp mains & rod bolts:





New rear main seal / installed:





yeah the good stuff lol:



Arp Head studs / installed:









Stay tuned as we move onto the head and it's specs in the next post!

[kris1732]

Awesome job guys keep up with the good work...

[Blackzenki82]

beautiful...

[Hybrid Motorsports]

So moving on, The heads received similar treatment:

-Lightly decked to ensure it flatness (good seal)
-3 angle valve job
-JWT valve springs & retainers
-Valve lash adjustment re-shimmed
-Cams journals line bored to correct our scouring problem
-New valve seals..etc...







To aid in the breathing process some Jim wolf technology (JWT) 261 cam's were added into the mix:



Old vs New:





And our assembly begins:

[Hybrid Motorsports]

Awesome job guys keep up with the good work...

beautiful...

Thanks Guys!