EP RACING VG30 BILLET MAIN CAP & GIRDLE KIT

Been a long time coming that the VG30 crowd has been in need of a better setup for housing the crankshaft.  The stock girdle is riddled with flexing issues and being made in a single piece design makes it a machinists nightmare to do a line hone job on the main saddle (housing bore).  The need of keeping the crankshaft fixed can be challenging but now its going to be made quite easy with our new billet main cap system.  Made of billet 4340 these are precision cnc machined and come pre-bored to within .005″ off center so the end user has less work in having the main housing bores sized accordingly.  You will still be able to retain the standard ARP 8740 main studs or you can opt to purchase L19s (not required or suggested) but if you want to go that route you’re more than able to since this main cap system you are able to hone/size each cap independently from another.  Main caps will be black zinc coated to prevent corrosion and come ready to be final machined.

In addition a new billet girdle has also been designed to lock in all the caps together to give the lower housing even more rigidity.  Made of the same 4340 material you’ll be reassured that the quality and attention to detail are second to none and offer the best solution for the lower end of your VG30.  This kit works for both VG30E models as well as the VG30DE (TT) models.  An upgrade to the caps that will be available is an exterior oil shed coating which aids in keeping oil drained back down to the sump of the oil pan.

No pricing or ETA yet but check back for details soon.  Hoping to debut the final production part beginning of the new year.

EP RACING Z31 FORGED PISTON KIT

This is the newest forged piston out on the market that we have designed in conjunction with CP Pistons. This is a true 9.5:1 piston. Once compression is calculated this piston puts the engine at 9.2:1 compression PERFECT for boosted applications.  GTP inspired to bring you the absolute best in performance, these pistons model the early style pistons that were used exclusively in the GTP series back in the late 80’s and early 90’s GTP SOHC engines. A blend of the old school with the new school these pistons feature attributes from a SOHC cylinder head profile (2 valve) and coupled with a DOHC lower half design features based off the DETT model engines.  Z31 owners get the best of both worlds!

Piston Specs:

  • Full Forged 2618 Aluminum
  • Twin oil feed with radial groove for pin bore
  • HD wristpins
  • Full floating pin bore design
  • Lateral gas ports
  • Steel Nitride top ring
  • Napier Second Oil ring standard tension
  • Flat top design
  • Valve reliefs are 1mm over sized for aftermarket valves
  • Radial side wall for added strength

Available in any bore size, the customer has an endless selection at his or her disposal. 94mm pistons shown below.

Pistons are made to order and take approx. 4-6 weeks for completion.  Please feel free to email me for pricing and or questions.

 

 

EP Racing VG30 8QT Racing Oil Pan

Oiling systems,  they plague us in the VG30 world.  Hell nearly every engine has an oil deficiency but its what we do to correct the issue that makes or breaks us in having reliable engines.  The VG30 has a small oil pan capacity of 4qts…yes that’s right!  You read that right 4QTS!!!!  A pure bread pedigree Nissan work horse was only given 4qts of oil for its survival, that’s extremely low for the amount of oil this engine really utilizes.  So what does one do?  Well after seeing what options were on the market and what was being sold for the VG30 I decided to make the ultimate wet sump oil pan that brought all the facets of modern day racing technology to the Z32 community.  I spent right at a year developing a new racing oil pan of which took countless measurements to ensure what was about to be designed and made was in fact the best pan people could buy for their Z32.

I decided that once my figures were solid I would contact Moroso to produce my design.  I chose them as they are unquestionably the world leader in oil pan technology.  The second you mention Moroso you immediately think oil pans and oiling systems, so of course this was the right decision to make.  I made the call over to them and spoke with some of my buddies I knew back in the R&D department.  Gave them the run down on what I wanted and they drew up the CAD drawings to showcase what my vision was.  The first design sort of resembled the stock pan but on more of a race feel look and approach.  It was only rated at approx 6qts….still not enough for my liking and I felt we had more to improve upon.

A test pan was fabbed up and sent over to me to do a test fit and see how things were.  Again as I mentioned there was more improvements but without a rendering in front of me to physically test out I was only speculating at best on where we could go.  So I mocked up the test pan and dropped a block in a chassis I had and noticed a BUNCH of extra room that could be utilized.  So back to the drawing board I went into improving my design.

So as you can see a lot of room was still present for me to occupy.  This lead to me designing a new and improved version which incorporated a secondary kick out, drop back front on the sump, a newly designed oil pick up tube, and a windage screen.

With this rendering I was 100% a go with the production.  A last few minute updates to the pan and it made it a bit easier for the pan to be installed for when you drop the engine in and a few provisions for oil returns and oil cooler return was done.  I also integrated an oil temp sensor bung for ppl to utilize for data logging.  I thank the members of tt.net for bringing up that valid point to have it included.

Here is the newly designed oil pick up tube.  This new design allows users to clean the screen portion between builds unlike the factory cone style which has to be replaced.

Here are the pans being made at the Moroso facility.  Professional grade!

Pans get final test with checking for leaks and then sent out to be black zinc coated.  This prevents corrosion and gives the pan a well deserved clean look!

And now finally back at my shop fully assembled to a race engine.  This oil pan screams performance.

 

To date this oil pan is the largest and best equipped oil pan on the market for the Z32.  A lot of time and effort went into producing this pan for the community.  I want to thank Moroso for bringing my creation to life, Rich @ RDZ, and the feedback from the community.  Without you guys this project couldn’t have happened.

Oil pan specs are:

8qt capacity

Constructed of brand new sheet metal

4 trap doors (45 degree tilt)

Newly designed pick up tube

Built in Windage Screen

Magnetic Drain Plug

Oil Temp Sensor Provision

Zinc Plated

Twin Kick outs

If you have any questions please feel free to email me at tech@epracing.net

Oil pans are available for purchase now!

GT30s w/ a New Look on Life

Alex P. contacted me some time ago to discuss availability on my oil pan and a few options for his engine, this lead to a long conversation which ended with him getting a full build done.  I was excited to talk to him because of what parts he was running and planning to do with his build.  Its not everyday you get customers willing and wanting to invest into their assemblies like he was doing.  It was a real treat to work on his outfit.  Alex is utilizing a few upgrades to include my newly introduced 8qt racing oil pan.  When the time came to finally fit the pan onto the block, it just looked like it was meant to be.  This entire build was an honor for me to do.  Alex spared no expense in getting the right work done.  I’m eager to see what kind of power he makes with this setup.

Mod list includes:

EP Racing Spec Block

Wiseco Pistons .040″

Pauter Rods

Clevite Main & Rod Bearings

MSP Manifolds

Garrett GT3071s

EPR HSO Modified Crankshaft

EPR Ported Oil pump

EPR 8qt Racing Oil Pan

EPR Bearing Coating Service

EPR Piston Coating Service

EPR Black Onyx Turbocharger Coating Service

EPR Manifold Coating Service

All new gaskets/seals & check valves

JWT valve springs

Mild Ported Cylinder Head

Stock Cams

950HP Shortblock from HELL!

I got a phone call from Mr. Petar K.  that I’ve been helping throughout the years.  He called me looking to possibly get an engine built.  Of course I was eager to build something for him so we discussed options and narrowed in on what could be done for his needs.  He had a severe deadline which sort of had me worried but everything was contingent on his decision that had to be made by that following Monday.  Monday came and he pulled the trigger to have a full short block assembly made.  I was sweating bullets to get him this block done and it came together without issue and done actually a little early.  Knowing what this short block was capable of, I certainly had no idea what his final plans were (turbos etc) till after he came and picked up the engine but knew what type of power he was aiming for.    Fast forward a week later and I called to check in with him to see how the progress was going with the rest of his assembly.

Things were going together as planned.  He was anxious to get things up and going for the up and coming dyno day he was scheduled for.  Everything installed and running smoothly, he pulled up on the dyno and pushed out a whopping 789RWHP / 950BHP!  WOW… I got a call from my Petar after he had gotten tuned and he was very excited that he just put down this type of power.  I sat back and was in awe that something I just built with good parts and a solid attention to detail just put down an obscene amount of power.  I mean as an engine builder you build your outfits to handle the power (and some) but it put my modifications to the test and it shined the entire rev band.  It makes me happy that I can see my assemblies work like this especially when I have customers as excited as I get when I get the news.

My hat goes off to you Petar!  Have fun and be safe out there!

 

Petars Mod list:

EP Racing Spec Shortblock

CP Forged Pistons .040″

SCAT H-Beam Forged Connecting Rods w/ ARP Rod Bolts

Clevite Main & Rod Bearings

EPR Bearing Coating Service

EPR Piston Skirt Coating Service

EPR HSO Crankshaft Modification

EPR Cylinder Bore Coating Service

JWT R5 Camshafts

JWT HD Valve Springs

ARP Headstuds

MSP Manifolds

Garrett GTX 2867 Turbochargers

WIN Factory Fuel Rail Kit w/ 1000cc Injectors