Jump to content
HybridZ

Recommended Posts

Great thread, the VQ is a bit neglected as a swap for the S30 or the S130, as a track bloke I like being able to set the engine way back, estimated weight distribution  45/55 which will help get that power down. The sorted 6 speed VQ gearbox is also a strong unit and supercharger kits are not too expensive.

Link to post
Share on other sites
  • 2 weeks later...

Pharaohabq -
I had the good fortune to stumble upon this thread and made an account just to post this. Obviously you're very knowledgeable about these engines so I'm hoping you (or anyone here!) can help me. I hope this isn't hijacking your thread too much but I figured others would benefit more if I posted here as opposed to sending a PM.

I have a G35 with nothing wrong with it except a bad motor (run into a deep puddle and sucked up water) along with a G37 that was t-boned driverside door and totaled but everything else is OK and the engine is immaculate. I wanted to swap the VQ37 into the G35 and figured it would work fine as the VQ37HR and VQ35HR have the same block, bore, etc.

I have only ever done maintenance stuff so I hired a mechanic known to a family member to do the swap. The mechanic, after removing the VQ37 said something similar to Doocam as far as the VVEL in the vq37 being different from the vq35. The mechanic told me he  called an infiniti tech who said the swap was possible but that a lot more wiring labor would be necessary and that it would cost a lot. However, on the phone a guy I was considering purchasing a VQ35 from told me something similar to your response to Doocam - that as far as differences between 35/37 it would just plug in and my only issue would be fooling the ECU.

 

I can't be sure but I think the mechanic may have exaggerated or just made up what he was told by the tech because he didn't want to mess with the computer system at all. He said that pretty much verbatim actually, though his main argument for buying a VQ35 to put in and selling the VQ37 was that it would be maybe double the labor cost total for the VQ37. There are only a few VQ35's within a few hours drive of me, and the only other option is buying sight-unseen online via junkyard/JDM dealer/ebay which seems like a very unwise risk to take given the high shipping costs and the very limited warranty.

 

What is the real deal here? Is the added difficulty not nearly as significant as my mechanic is saying?
I'm going to call an infiniti dealer myself and try to get a tech on the phone and ask them too (not sure why I haven't done that yet...)

I'm extremely grateful for any info relating to this situation.

Link to post
Share on other sites
  • 2 weeks later...
  • 9 months later...
On 3/18/2020 at 12:38 PM, mbp123 said:

Pharaohabq -
I had the good fortune to stumble upon this thread and made an account just to post this. Obviously you're very knowledgeable about these engines so I'm hoping you (or anyone here!) can help me. I hope this isn't hijacking your thread too much but I figured others would benefit more if I posted here as opposed to sending a PM.

I have a G35 with nothing wrong with it except a bad motor (run into a deep puddle and sucked up water) along with a G37 that was t-boned driverside door and totaled but everything else is OK and the engine is immaculate. I wanted to swap the VQ37 into the G35 and figured it would work fine as the VQ37HR and VQ35HR have the same block, bore, etc.

I have only ever done maintenance stuff so I hired a mechanic known to a family member to do the swap. The mechanic, after removing the VQ37 said something similar to Doocam as far as the VVEL in the vq37 being different from the vq35. The mechanic told me he  called an infiniti tech who said the swap was possible but that a lot more wiring labor would be necessary and that it would cost a lot. However, on the phone a guy I was considering purchasing a VQ35 from told me something similar to your response to Doocam - that as far as differences between 35/37 it would just plug in and my only issue would be fooling the ECU.

 

The VVEL is exactly the issue, unless you have a VQ35DE in which case the later engines also have dual throttle bodies instead of a single one. There's no cheap clever trickery you can do to to just bolt up the engine where a VQ35 was. All the engine electronics have to be swapped over, and your electronics may or may not play well in the new chassis which is where at 350/370z group would come in handy. 

 

G35 isn't particularly expensive anymore, I'm not sure all the cost and effort would be worth it. Unless you're swapping the engine into some other fun project like an old Z like ours, you're better off just selling the engine and buying another G35 or 350z. If you have a manual tranmission in the G37 I'm sure the selling price of the engine/trans combo alone would get you most of the way to a decent G35.

 

4 hours ago, Zhuzh said:

I am very excited to start my project. I am still very interested in the differences between the VQ35HR and VQ37HR swaps, and what mounting braket kits are still available. 

 

Google is your friend for kits. Major differences are what I listed above.VVEL and .3L extra displacement are the most notable differences, but it's different and more difficult enough that I can count on one hand how many people are using the vq37 in a swap. 

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...