Infiniti G35 VQ35DE Rev Up Engine Specs, Issues, & Swap Guide

Overview of the Infiniti G35 Rev Up Engine

The Infiniti G35 sport coupe was produced from 2003-2007 and featured a 3.5L V6 engine. In 2005, Infiniti introduced the "Rev Up" engine for the G35 which had increased horsepower and torque compared to the regular VQ35DE engine.

What is the Rev Up Engine?

The G35 Rev Up engine, officially called the VQ35DE Rev Up, uses variable valve timing technology on the intake valves in order to optimize power delivery. This allows the engine to produce an extra 24 horsepower and 6 lb-ft torque over the regular VQ35DE engine. The result is 298 horsepower versus 274 horsepower from the standard VQ35DE engine.

Hardware changes between the Rev Up engine vs the regular VQ35DE include:

• More aggressive camshaft profiles
• Secondary timing chains/guides
• Different oil passages

These hardware changes along with optimized variable valve timing enables the Rev Up engine to produce more peak horsepower at higher rpm.

Benefits of the Rev Up Engine

There are several advantages that the G35 Rev Up engine offers over the regular VQ35DE:

• Higher horsepower - 298 hp vs 274 hp
• More torque - 260 lb-ft vs 258 lb-ft
• Better throttle response
• Higher redline - 7500 rpm vs 6600 rpm
• More exciting driving experience

The extra power and higher rev limit give the G35 coupe livelier acceleration and performance, making it more fun to drive both on the street and on the track.

Issues with Rev Up Engines

While the Rev Up engine offers great power gains, it does have some known issues that potential buyers should be aware of:

• Oil consumption - Rev Up engines tend to burn 1 quart of oil every 1000-2000 miles.
• Timing chain issues - The secondary timing chains are prone to stretching over time.
• Carbon buildup - These engines are prone to carbon deposits on intake valves and in combustion chambers.

Thankfully there are solutions to these problems, including upgraded timing chains, catch cans for reducing oil blowby/carbon buildup, and regular maintenance.

Purchasing a G35 Rev Up Engine

For those looking purchase a G35 Rev Up engine, either to swap into your G35 or use for a different Infiniti/Nissan VQ35DE powered vehicle, you can find used ones available online.

Where to Buy a Rev Up Engine

Some top places to buy a used Rev Up engine include:

• eBay Motors - Lots of engines and full motors available
• Facebook Marketplace - Search local listings for a good deal
• Infiniti/Nissan forums - Members often sell used engines
• Local auto recyclers - Call around to junkyards and recycling centers
• Japanese engine importers - Import low mile JDM Rev Up motors

When searching for one, try to find a complete Rev Up engine assembly with wiring harnesses, electronics, and accessories included. This will make the swap process much simpler.

What to Look for When Buying

Important things to inspect and ask about when shopping for a G35 Rev Up motor:

• Mileage - Lower miles equals less wear
• Compression test - Ensure good cylinder compression
• Oil leaks - Look for leaks around gaskets and seals
• Timing chain noise/operation - Listen for rattles on cold start
• Modifications - Avoid heavily modified engines
• Maintenance records - Ask for service history if possible

Ideally you want an engine with less than 100k miles on it, strong compression test numbers, no leaks or noises, stock/lightly tuned, and some kind of service history.

Average Costs

Prices for G35 Rev Up motors can vary quite a bit depending on factors like:

• Mileage
• Location/shipping
• Accessories included
• Electronics included
• Condition
• Modifications

Some average starting prices are:

• VQ35DE Rev Up engine only - $800 - $2000+
• Long block engine - $1500 - $3000
• Complete Rev Up engine swap - $2000 - $4000+

The full engine assemblies with electronics and accessories intact tend to cost more but make for simpler installs. Expect pricing to be higher on lower mileage, imported JDM engines as well.

Installing a G35 Rev Up Engine

VQ35DE Rev Up Engine Swap Compatibility

The VQ35DE Rev Up engine can be swapped into multiple Infiniti and Nissan vehicles. Compatible vehicles include:

• 2003-2007 Infiniti G35 coupe/sedan
• 2003-2006 Nissan 350Z
• 2002-2007 Nissan Altima V6
• 2005-2010 Nissan Pathfinder
• 2004-2008 Nissan Maxima
• 2004-2006 Nissan Quest

Essentially most cars equipped with the standard DE, non-Rev Up VQ35 engine can accept the Rev Up engine minus some ECU/wiring differences in Altima models.

VQ35DE Rev Up Engine Swap Process

High level overview of swapping in a G35 Rev Up Engine:

1. Remove non-Rev up engine, transmission, accessories etc.
2. Install new Rev up engine, mate to same transmission
3. Connect engine wiring harnesses, link ECU
4. Connect coolant lines, A/C lines, PCV system etc.
5. Verify oil pan and pickup clearance to front crossmember
6. Complete all accessory drive belts, mounts, power steering
7. Prime/bleed cooling system, install intercooler piping if turbocharged
8. Final check and inspection before starting

An engine hoist, basic hand tools, and an understanding of Infiniti/Nissan VQ35DE engine bays will be required. For those less mechanically inclined, a professional VQ or G35 specialty shop can handle the entire swap process for you.

ECU Tuning & Customization

To really unlock the most power from your Rev Up swapped VQ35, ECU tuning is recommended. A professional tune will optimize things like:

• Timing maps
• Fuel maps
• Target boost levels
• Rev limits
• Gear based tuning tables

Beyond simple ECU optimization, popular customizations for Rev Up motors include turbocharger, supercharger, and nitrous kits. With supporting mods, over 500 wheel horsepower is achievable from modified high revving Rev Up engines.

FAQs

What causes oil burning issues on G35 Rev Up engines?

Infiniti Rev Up engines are prone to high oil consumption issues due to the more aggressive cam profiles and increased blow-by gases passing the pistons and oil control rings, leading to oil being burned off in the combustion chambers.

Do Rev Up engines require premium gasoline?

Yes, because of their high compression ratio and tuned ECU programming, Rev Up VQ35 engines need premium 91+ octane gasoline to reduce the chance of detonation and engine damage.

Can a Rev Up engine be turbocharged?

Yes, many G35 & 350Z owners install single and twin-turbo kits on their Rev Up VQ35 engines. With proper tuning and engine reinforcement, over 500+ horsepower can be achieved.

What transmission works best for a Rev Up engine?

The 6-speed CD009 manual transmission is the most commonly used and recommended transmission for high-power Rev Up engine builds due to its strength and performance capabilities.

How much oil does the Rev Up VQ35 engine take?

These engines take approximately 6.9 quarts of oil including oil filter. Always check your dipstick to verify oil level. Mobil 1 or other synthetic blend oils are recommended for maximum protection.