FWD vs RWD VQ35 Differences (Lengthy) - Maxima Forums

Go Back  Maxima Forums > Advanced Performance > All Motor
Reload this Page >

FWD vs RWD VQ35 Differences (Lengthy)

All Motor All Motor Advanced Performance. Talk about Engine Swaps, Internal Engine work. Not your basic Y pipe and Intake Information.

FWD vs RWD VQ35 Differences (Lengthy)

Old 02-23-2008, 01:35 PM
  #1  
No more Maximas...
Thread Starter
iTrader: (26)
 
pmohr's Avatar
 
Join Date: Jul 2005
Location: Oak Ridge, TN
Posts: 14,331
FWD vs RWD VQ35 Differences (Lengthy)

To try to cut down on the 'can I use a 350z motor in my car', or 'why can't I use a G35 or FX35 or (etc) motor for my swap?' type of questions.

Recently started as a tech at a local Nissan performance shop (AAM), so I had the opportunity to snap some pics (and hopefully be more helpful around here). The following pictures all have the blocks aligned in basically the same exact way for ease of comparison).

RWD Block (350z, FX35, G35, any RWD VQ35DE platform)


FWD Block (Maxima, Altima, Quest [IIRC], any FWD VQ35DE platform)


Mounting Comparison
  • RWD:
    • Large bolt pattern, maybe 8"x5" (from memory, definitely not accurate)
    • Mount cast positioned towards the timing cover
  • FWD:
    • Small bolt pattern, maybe 4" square (from memory, definitely not accurate)
    • Mount cast positioned towards the end of the block

Accessory/Manifold comparison
  • RWD:
    • Exhaust manifolds/headers curve backwards, away from the motor mounts
    • Accessory mounting points are located vertically along the front edge of the block (these are for the AC compressor, IIRC)
  • FWD:
    • Exhaust manifolds/headers head straight down, motor mount is offset and doesn't get in the way
    • Accessory mounting points are located horizontally along the lower edge of the block

Here's two side-by-side pics (blocks are aligned in the same position, however the FWD block has torque plates 'installed'):

Left side


Right side (crappy pic, but you get the point)






Basically, you can definitely use the RWD block in a FWD design, it would just require re-engineering of a lot of things. Not even minor things, but motor mounts, headers/exhaust manifolds, etc.

To use a RWD block in a FWD chassis
  • Custom motor mounts that extended towards the trans to utilize the center crossmember. Would most likely be weaker than the stock FWD mounts (on the FWD block) unless you braced the hell out of them.
  • Custom headers made to stretch around the custom motor mounts made above - as you can see the RWD mounts are just plain in the way of any sort of manifold that comes straight down.
  • Custom mounting brackets for all of the accessories, or try to customize the RWD accessories/mounting rails to work

Benefits of using a RWD block in a FWD chassis (assuming it will ever be done, not likely)
  • Turbo manifolds could go directly over to the driver's side without the typical FWD mount interference
  • Engines may be easier to find
  • Possible ability to use the revup engine (with all associated electronics of course)

Long I know, but trying to get the point across. If anyone has any questions, please post them here and I'll try to address them for you.

Last edited by pmohr; 06-24-2008 at 11:22 AM.
pmohr is offline  
Old 03-21-2008, 04:16 AM
  #2  
No more Maximas...
Thread Starter
iTrader: (26)
 
pmohr's Avatar
 
Join Date: Jul 2005
Location: Oak Ridge, TN
Posts: 14,331
Originally Posted by mastercoryd View Post
quick question, i know their mounted differently and may gain horse power from different headers, but why is the vq35 in a 350z have more horsepower is it just cuz of its boltons or is the vq35 in a rwd better? also whats a vq35hr just a rwd version of it or what?
The RWD VQ35 has different intake and exhaust manifolds, as well as different overall tuning and CVTC maps. Between all of those, you end up with more power.

The HR is a redesigned version of the VQ35DE; more power, stronger internals, CVTC on both intake and exhaust (like the revup), etc.
pmohr is offline  
Old 06-25-2008, 01:58 PM
  #3  
'Trynna' is not a word
iTrader: (19)
 
mtrai760's Avatar
 
Join Date: Mar 2001
Location: Seattle Area, WA
Posts: 7,081
Thread cleaned up, stickied, and closed. If anyone has anything RELEVANT to add, send me a PM.
mtrai760 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mkaresh
8th Generation Maxima (2016-)
21
03-12-2018 06:48 PM
mclasser
5th Generation Maxima (2000-2003)
16
02-19-2016 04:45 PM
doctorpullit
8th Generation Maxima (2016-)
60
12-12-2015 09:39 AM
JakeOfAllTrades
7th Generation Maxima (2009-2015)
6
10-05-2015 10:40 AM
JakeOfAllTrades
7th Generation Maxima (2009-2015)
1
09-30-2015 03:16 PM


Thread Tools
Search this Thread
Quick Reply: FWD vs RWD VQ35 Differences (Lengthy)


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.