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THE INFAMOUS Q45 SWAP


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i need to know if that Q45 swap has been done yet,it seems everyone just stopped talking about it.

need more info.

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Guest Aaron

I am considering it as a possible swap into my 82ZXT. Possibly with a turbo(s) just for :D . I am at least a year away from starting the conversion, however.

 

If you are considering this swap go to www.nissaninfiniticlub.com and go to the Infiniti forum to do some research. Q45Tech is the Grumpyvette of that sight, so listen to his advice.

 

You may want to mix and match some parts to get the best combination. 1990 - 1996 are all essentially the same and rated at 278 hp @6000 rpm. '90-early '91 engines make the most power (~290 hp actual) due to better heads. Late '91 - '95 engines make ~285 actual and '96 makes ~275 actual. '90 - '93 engines have issues with the cam chain guides. '90 - '95 engines use Variable Valve Timing on the exaust cam to adjust torque and gas mileage. '96 did not, and did not make as much hp because of ODB II. '90 - '93 transmissions have lower (higher numerically) 1st and 2nd gears, however '90 - '92 only use 1st gear when you manually shift in to it. The engine was never mated to a manual trans from the factory.

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Gang

 

This is a topic that I track regularly and have had some passing contact with those that know of Q45 swaps into S30 engine bays being planned, attempted and completed.

 

Most stories are out of Australia and New Zealand so far. About 6 months ago I was passed a link to a some excellent photos in Japan of a VH45 being test fitted into an S30 engine bay. It looked very tight and barely doable but the guy had it in and mounted to engine supports. Problem was the width of the head covers. Almost no clearance between the stock shock towers and the engine. That link is no longer active so I do not have any more news about that project.

 

Secondly, a young woman from Australia contacted me last year telling me that she was actively sourcing a VH45 half cut in Japan with plans to swap it into her 240Z autocrosser with her machinist father's help. Haven't heard from her for over 8 months, but I intend to check on her project this summer.

 

The interesting news is that the VH45 engine has a baby brother named the VH40 or VH41 (I can get the exact model # if necessary) that is virtually the same displacement, but is 1.5 inches narrower at it's widest point.

 

One of my 510 buddies in Washington now has a clean, used version of the VH41, with matching tranny and control system, sitting in his garage waiting for a donor Z body to do a swap into. Biggest problem for this very talented Datsun sleeper builder is that he thinks Z cars are "too modern" for his swapper tastes and secondly, that his new baby and professional obligations are pulling him in new directions away from his swapping hobby.

 

When and if he starts the project, you can bet it will be well documented and showcased at my website, ZPARTS.COM.

 

--Sleek Z

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