Vq37vhr differences Vin A Vin B Infinity 370z

NissanTracker · 02-21-2021, 05:41 PM

Hi Forum,

Trying to grab an engine for a build and i'm noticing that i can easily find a vq37vhr from Infiniti's (i.e G37/Q50). Are they interchangeable with the 370z? Plan is a build bottom end to pair up with a FI TT set up for my 14' Nismo.

Thanks again!

Spooler · 02-21-2021, 06:43 PM

Same engine. The only difference may be the heads. They changed to Beehive springs at some point and time. Not a big deal unless you are doing JWT C2 cams. Headgaskets sealing issues are going to be a major concern depending on the power you want to make.

jchammond · 02-21-2021, 08:03 PM

Sign him up Spooler

Spooler · 02-21-2021, 08:37 PM

Quote:

Originally Posted by jchammond

Sign him up Spooler

He can sign his own self up.

NissanTracker · 02-21-2021, 09:50 PM

Quote:

Originally Posted by Spooler

Headgaskets sealing issues are going to be a major concern depending on the power you want to make.

Yeah, i remember you commented on another thread about the headgasket issues. I'm shooting for 600-650 whp. 93 octane (we don't have e85 where I'm at). Is there any remedies to help? Specific headgasket and/or specific ARP bolts?

My natural choice for compression would be 9:1, but I'm getting mix info about staying 11:1 for quicker spooling or 10:1 as a middle point between 9 and 11. Any input on this? I will most likely go with Z1Motorsports' Stage 1 or stage 2 rebuild kits... unless anyone has any recommendations.

Much appreciated!

Spooler · 02-21-2021, 10:36 PM

Quote:

Originally Posted by NissanTracker

Yeah, i remember you commented on another thread about the headgasket issues. I'm shooting for 600-650 whp. 93 octane (we don't have e85 where I'm at). Is there any remedies to help? Specific headgasket and/or specific ARP bolts?

My natural choice for compression would be 9:1, but I'm getting mix info about staying 11:1 for quicker spooling or 10:1 as a middle point between 9 and 11. Any input on this? I will most likely go with Z1Motorsports' Stage 1 or stage 2 rebuild kits... unless anyone has any recommendations.

Much appreciated!

For your power you can stay at 11:1 but that will limit you in the future if you want more power. 10:1 is the lowest I would go. Since you are doing pump gas, 10:1 would be your best choice. The rest is up to you. I would recommend you call Mazworx and talk to Mark. Let them assemble the whole long block.

Spooler · 02-21-2021, 10:44 PM

Oh yeah, don't believe most of the stuff you read on Facebook. Lots of misinformation out there that will cost you a motor.

jchammond · 02-22-2021, 02:55 AM

Quote:

Originally Posted by NissanTracker

Yeah, i remember you commented on another thread about the headgasket issues. I'm shooting for 600-650 whp. 93 octane (we don't have e85 where I'm at). Is there any remedies to help? Specific headgasket and/or specific ARP bolts?

My natural choice for compression would be 9:1, but I'm getting mix info about staying 11:1 for quicker spooling or 10:1 as a middle point between 9 and 11. Any input on this? I will most likely go with Z1Motorsports' Stage 1 or stage 2 rebuild kits... unless anyone has any recommendations.

Much appreciated!

Ethanol would benefit more with a lower than stock static compression; as leaving room to dump more fuel

You can purchase high quality ethanol from Ignite Race Fuel & have shipped to you by the barrel

Especially when you want to dial up boost

Huge power difference vs 93

NissanTracker · 06-22-2021, 11:55 PM

I think i will settle with 10:1. I know e85 is the to go choice for more power, but I'm keeping this build with considerations of only having 93 octane here. VP stores do have e85 in barrels, but I'm not going to deal with that b/s.

My old man has 2 vettes that use meth injection and I see his lab for his mixing. No time for that.

02-21-2021, 05:41 PM	#1 (permalink)
NissanTracker Track Member Join Date: Jun 2016 Location: Massachusetts Posts: 724 Drives: 07' Nismo, 14' Nismo Rep Power: 29262	Vq37vhr differences Vin A Vin B Infinity 370z Hi Forum, Trying to grab an engine for a build and i'm noticing that i can easily find a vq37vhr from Infiniti's (i.e G37/Q50). Are they interchangeable with the 370z? Plan is a build bottom end to pair up with a FI TT set up for my 14' Nismo. Thanks again! jchammond likes this.

02-21-2021, 06:43 PM	#2 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,834 Drives: 2013 Nismo 370z Rep Power: 2684392	Same engine. The only difference may be the heads. They changed to Beehive springs at some point and time. Not a big deal unless you are doing JWT C2 cams. Headgaskets sealing issues are going to be a major concern depending on the power you want to make. Rusty, jchammond, NissanTracker and 1 others like this.

02-21-2021, 08:03 PM	#3 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Sign him up Spooler Rusty and NissanTracker like this. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

02-21-2021, 10:44 PM	#7 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,834 Drives: 2013 Nismo 370z Rep Power: 2684392	Oh yeah, don't believe most of the stuff you read on Facebook. Lots of misinformation out there that will cost you a motor. cv129, Rusty, jchammond and 1 others like this.

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06-22-2021, 11:55 PM	#9 (permalink)
NissanTracker Track Member Join Date: Jun 2016 Location: Massachusetts Posts: 724 Drives: 07' Nismo, 14' Nismo Rep Power: 29262	I think i will settle with 10:1. I know e85 is the to go choice for more power, but I'm keeping this build with considerations of only having 93 octane here. VP stores do have e85 in barrels, but I'm not going to deal with that b/s. My old man has 2 vettes that use meth injection and I see his lab for his mixing. No time for that.