I am looking to get a group buy together for a Billet VQ37VHR block. I need 3 folks to add to the list. I have two people in the list. Let me know.


https://www.mazworx.com/pro-street-b...5de-block.aspx

After a ton of thought on this issue I have a couple of choices if I want to run in the 1k whp and be reliable. Get a billet block made and then hope the heads will be OK or just swap to a VR38. Otherwise, I will have no choice but to turn it down to 800 to 900whp and call it a day. I have tried my best to make the VQ37vhr work for me. It's just not happening. I have no faith in the SOHO top fuel hoops either. They may work for a little while but I believe they will fail at 1kwhp for an extended period of time also. There are only 2 cars at over 1kwhp and they are basically drag cars. So much for the arse load of money I have spent. I am not sure which way I am going yet. Will have to wait and see.

I am leaning towards just turning my car down. The VR38 swap car that is in the middle east works engine wise. They just have absolutely No traction with over 1k of TQ. So If I can't use it, why bother. Ugg, this is not good for our platform but it is what it is.

I now have 3 people in for the Billet block. It will be around 10k for just the block. We need 2 more folks.

Billet block is not happening. We just don't have the interest on our platform and the misinformation is way way off the chart. The stock block is just garbage but it was never designed for 4 times the power level we are asking it to handle.

What am I going to do? I have no freaking idea.

This video kind of sums up the VQ. If I keep it, I will just have to turn it down.
VQ stuff starts at 7:55.

4. If you get this 5th person and iron out the details let me
Know. I have a friend who is interested

I have known for quite some time about Chris Forsburg's stuggles with the VQ. It's not new to me. When I lifted the heads and torched my first motor Brian and I had a discussion about it. Brian and Chris are tight since MA was the home shop for him when he was based on the east coast. I tried the Mazworx engine and it held for a little bit until I got greedy with the HP. My Mazworx motor is not toast, it just needs the headgaskets replaced. I can drive it around and it won't overheat. It still holds boost without pushing water if I keep the boost turned down. I have a few other issues I am working on right now I need to fix. I'll leave it at that.

:iagree:

I feel the VHR VQ's sweet spot for power and reliability is around 750whp to 800whp, that's after being full built as well.

If you want more and want to be reliable I think a VR38 swap is the way to go or obviously a nasty boosted v8.

If I keep the Z and don't go to a 2023 Supra with a 6MT when they release, the VR38 swap will probably be the route I'll take.

Last I heard used VR38's are only around $10k now (correct me if wrong) and even in stock form the VR38 can take more power than even a built VQ.

If and when I start chasing big power for the Z, the VR would be my goto.

I think they will run more than that cost wise.. Nissan has been skyrocketing the price of VR38 parts the last year, which should be driving up the used engine prices too since less people will just build all new ones now. They can handle around 825-850rwhp stock but not forever... mine lasted about 2 years like that in my GTR before bending a rod. Though the GTR will load the engine up much more often with the AWD, and perhaps in a Z it may go a lot longer.

Last I checked a VR38 junkyard longblock was 14-17k for a good one. The motors can't be bored so if it is fubar, a new block will be needed.

I am still not sure what I am going to do yet. If a VR38 was only 10k I would have already had one sitting at MA.

Hate to say it bro. But, you have one of the best platforms for power and speed in your garage already. You already know you would have an absolute monster if you dumped the money into "that" instead.

Still, I totally get wanting to have something very fast that was never intended to be very fast. Plus, like you mentioned months ago, nothing drives like a Z and it's true the Z is one of the best drivers car out there. It's a shame Nissan took a motor out of the parts bin to stuff inside it.

If only Nissan designed an all new VQVHR with a closed deck back in 2009, it would be a different ball game altogether for our platform right now.

Seems like a VR38 is the only way to meet your hp/reliability goals.