 Project 914n6 -> the infamous Nissan V6 swap, new motor buildup |
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| Chris914n6 |
  Jul 26 2022, 03:04 AM
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#1
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Jackstands are my life.  Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region  |
Logic, according to my brain...
In 2000 I installed a Nissan VQ30, 3.0L from a 97 Maxima. 190hp 205tq and it was great. Then things happened (rusted battery tray). Then it sat for a decade (recession). The engine now overheats the cooling system like a bad head gasket. Likely from aluminum erosion from sitting too long (other signs). Fixing that requires complete disassembly down to a short block. Soooo.... I decided to move up to a VQ35, 03 Maxima 3.5L +80hp!!! (that's 42% more) Here's the rub. To get the VQ30 to fit I moved everything forward 1.5". Renegade sbc trans blocks, shortened shift rod, small hole in the truck. To fit the VQ35 as-is I would need to move it back, likely to stock location, to clear the variable cam timing stuff. That means a new cross mount, new shift rod, redo exhaust, plus new harness and ms3pro ecu ($$$$). Turns out the gearheads at Maxima.org like to upgrade too. They created a VQ30/35 hybrid. It's a VQ35 engine with VQ30 ecu, harness, timing components and accessories. I lose the variable cam timing but I get to reuse all my custom swap bits, which saves a bunch of time I don't have before RRC22. But it requires some new custom parts. If one or more of our great fabricators has time and tools I'd love to First is the Throttle Body adapter. Replacing the factory e-gas with cable. I currenly have this partially drawn in CorelDraw and design is not absolute (still searching hardware). 96mm x 99mm. TB (red) bolts to piece_1 (blue) which bolts to piece_2 (green) which bolts to IM (yellow). (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1658826257.1.jpg) Second is cam gear adapters/spacers in steel. I need 2 @ 178* and 2 @ 180*. 4 total cuz 4 cams of fury. 6mm dowel pins look to be readily available. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1658826258.2.jpg) Third is a pair of aluminum block-off plates for the VVT cam adjusters. 1.5" x 3.5" Also drawn in CorelDraw, which can be exported as .ai or .dxf. Actually I might make these by hand. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1658826258.3.jpg) Gratuitous PartsFinder pic (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1658826258.4.jpg) |
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| tygaboy |
Jul 26 2022, 07:49 AM
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#2
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914 Guru Group: Members Posts: 5,445 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California 
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I may be able to assist with the block off plates. What thickness of aluminum? The plasma table can’t compete with a mill for edge finish, particularly on thicker material but let’s at least explore it. Feel free to PM me, too.
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| Mueller |
Jul 26 2022, 07:59 AM
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#3
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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Hi Chris,
Remind me late next week if not in a huge hurry, I'm driving up to Cornelius Oregon for a wedding this weekend. That car is going to be even more wicked with that power upgrade! Think you'll do a VR30DDTT from a new Z or Infinity once they start to get wrecked on a more regular basis? |
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| Chris914n6 |
Jul 30 2022, 02:49 PM
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#4
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
QUOTE(Mueller @ Jul 26 2022, 06:59 AM)  Think you'll do a VR30DDTT from a new Z or Infinity once they start to get wrecked on a more regular basis? Not likely. Too many things going on with that one. Same with the HR and 3.7. This vq35de will hopefully be the last one. Will do ~300hp with headers and a good tune, 400hp with turbo but only if a WRX trans can take it. |
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| Chris914n6 |
Jul 30 2022, 02:58 PM
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#5
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Made it to the Gaudin Porsche Bumblebee reveal. The first official outing of my resurrected car (IMG:style_emoticons/default/sunglasses.gif) Also the last with this poor engine. It was tough to be so gentle with the throttle but made it no problem. I'm tempted to paint the lowers red and call it a Bumblesicle (IMG:style_emoticons/default/av-943.gif)
(IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1659214723.1.jpg) |
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| Chris914n6 |
Aug 9 2022, 03:59 PM
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#6
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Let's file this under things I don't want to do twice.
First the outer timing cover. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660082357.1.jpg) Then the timing components. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660082358.2.jpg) Then the inner timing cover. 72 bolts total (IMG:style_emoticons/default/blink.gif) (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660082358.3.jpg) But before I put the vq30 parts on I am going one step further. This year motor came with a bad batch of valve stem seals. So I'm pulling the cams to replace them while I'm already here. For that normal person that asks "why not just do the head gasket on your 3.0L?". Well, after the cams are out the head bolts can come out -- this is why I chose upgrade over just fix... (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660082358.4.jpg) They also had issues with the cam gear chain guides prematurely wearing. The fact that it hasn't worn thru yet is a good sign of low miles and easy living. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660082359.5.jpg) |
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| Mueller |
Aug 9 2022, 04:36 PM
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#7
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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Looks easier than an Audi. Are upgraded guides available or is that not worth the effort?
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| Chris914n6 |
Aug 10 2022, 07:57 PM
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#8
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
The factory fix is updated guides and chain. The chain is the problem.
I'll be using all the parts from the 3.0 so it's not an issue. Mid work day update. Got one side done and my back wanted a break. This valve spring popper tool works really well if you have the right hardware handy. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660183060.1.jpg) In case you're wondering.... solid lifters. |
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| Chris914n6 |
Aug 14 2022, 02:25 PM
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#9
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Got behind on updates.
Boring part <rant> The cam adapter diagram is wrong. Because the person (engineer) that designed it took logical measurements but didn't update his mistakes after trying to assemble it on the engine. The pins are too long, specially the 10mm that goes (doesn't) only 3mm into the tapered cam flange. Then the 18mm is way longer than it needs to be, the factory only did 3mm in 7mm out (IMG:style_emoticons/default/headbang.gif) Threads also left out the factory part#s. This is why I double check and usually figure it out myself. (IMG:style_emoticons/default/ar15.gif) </rant> This would be alot easier if vq30 hot cams weren't $1400. But going from vq35 238/240 to vq30 232/232 just gives up too much fun. Spent the rest of the evening removing ancillary parts then another 5/8" in 1/2 hour t-storm blew in. Also 100f and humid sucks. |
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| Chris914n6 |
Aug 14 2022, 03:07 PM
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#10
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
I've gotten to the point where I have an engine in/out system that is fairly quick. Unfortunately I have gotten to the point where I have an established system...
(IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660511240.1.jpg) Previously I used threaded rods to lower the front while using a jack for the trans. Now I use 2 jacks and the rods as guides. Still have to drop the front wheels to the ground to clear 32" under the bumper. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660511241.2.jpg) Then in the spirit of upgrades I test fit 350z/g35 exhaust manifolds. Would have been cheap and easy HP if they weren't such a poor fit. Tried z32 headers too but didn't fit the heads. I'll have to make some when/if the time comes. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660511241.3.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660511241.4.jpg) |
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| Chris914n6 |
Aug 16 2022, 12:17 AM
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#11
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Not much for today. Got the vq30 stripped except for the flywheel, as it's stuck.
Did a little pre-fitting of coolant pipes and seeing how much of the vacuum hoses stays with the EGR. The 02-03 vq35 didn't have EGR so those bits won't be transferred over. After way too many brain taxing hours looking thru FSMs it looks like I'm free to remove the whole vacuum hose jungle gym that was used on my 97 CAL spec swap. I previously grabbed a 95 FED manual ecu as it's compatible with NIStune and it's before all the evap system check systems. Also going back to the early 90s for the basic evap system. The ecu controlled system is just too much. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660630659.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1660630659.2.jpg) |
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| Mueller |
Aug 21 2022, 10:12 PM
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#12
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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Hi Chris,
Just need to machine off the excess material on this one and tap it.  |
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| Chris914n6 |
Aug 22 2022, 08:45 PM
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#13
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
(IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/aktion035.gif) (IMG:style_emoticons/default/beerchug.gif)
QUOTE(Mueller @ Aug 21 2022, 09:12 PM) Hi Chris, Just need to machine off the excess material on this one and tap it. |
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| Chris914n6 |
Aug 22 2022, 09:36 PM
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#14
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Weekend update.
A little WD40 overnight soak and I was able to work the flywheel off. Then the part I didn't want to do twice happened again... Nice simple flat outer cover that was a b* to pry loose. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661225798.1.jpg) Outer cover off. You can see the necessary timing marks on the intake cam gear. Everything looks good like it should given the 20-25k on the motor. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661225798.2.jpg) The much simpler timing setup off and without power tools this time. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661225798.3.jpg) Rear cover doesn't want to come off either, so called it a night. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661225798.4.jpg) But before I went in I did a quick test fit of the VVT cover. This Chris isn't making a new firewall for 5-10 hp... (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661225798.5.jpg) |
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| Chris914n6 |
Aug 24 2022, 10:40 AM
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#15
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
A rare moment of easier than expected.
The 3.5 FlywheelPS is 4mm longer and the oil pan is 4mm thicker at the mounting location to accommodate. The guide lists options as grind down the 3.5 mount or swap the 3.0 oil pan. The only other differences with the oil pan is an extra hole for the compressor to mount directly instead of with a bracket -- and extra internal bracing. I feel the bracing is important... so some quick FSM reading and, no surprise, the sensors function the same. Luckily this part of the harness is a separate segment and it just happens to use the same pins (unlike the injectors) and it wasn't removed from the motor before I got it. Presto change-o connector replace-o (IMG:style_emoticons/default/santa_smiley.gif) (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661359218.1.jpg)(IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661359218.2.jpg) Spent the rest of the time cleaning and de-gasketing and making my neck hurt. I also need to up my pace (IMG:style_emoticons/default/poke.gif) |
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| Chris914n6 |
Aug 30 2022, 04:46 PM
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#16
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Noting much to take pics of. Did some more cleaning. Started working on the throttle cable bracket. Had some down time waiting for parts... found some interesting info on the HR & compatibility. The RWD HR intake looks like it will fit without the trunk cuts I had to make earlier, but the parts list gets involved and fuzzy.
Monday was delivery day. Adjustable FPR (Aeromotive clone), added 8mm barbs, injector connectors from wirespecialties.com (yes 2 are missing, they are inbound), factory EGR tube plug. Grabbed double the dowels (10mm 16mm 20mm) I need just in case I mess up the 'fitting' from McFaddendale Hardware (local). Also got a quart of paint to cover the primer in the engine bay (finally, put that off for a while). (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661899588.1.jpg) Took a trip to the Pick-a-part for a G35 fuel rail inlet/damper. Rubber hose over a plastic hose -- kinda funky thing to do. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661899588.2.jpg) They happened to have an HR apart to inspect. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661899588.3.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1661899588.4.jpg) Looks like it's going to be 110F all week, because it's crunch time (IMG:style_emoticons/default/dry.gif) |
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| Chris914n6 |
Sep 1 2022, 05:37 PM
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#17
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Another series of small accomplishments.
Used the drill press to file down the TB adapter cap screws from 10mm to 9mm to make @Mueller happy. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1662075425.1.jpg) Took a lesson from the 'resurrection' and bench tested the injectors before the engine is installed. Passed with flying mist (IMG:style_emoticons/default/rolleyes.gif) (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1662075426.2.jpg) Also set the aFPR to 51 psi (3.5 bar). No surprise the cheap gauge is off. Followed advice from a Youtube vid and took the FPR apart first. Found aluminum chips (debris) that would have been bad for the injectors and greased the adjustment screw. Also put thread seal on the gauge plug. Still trying to find a good place to mount it. (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1662075426.3.jpg)(IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1662075426.4.jpg) Lastly, prepped the engine bay for paint in the (IMG:http://www.914world.com/bbs2/uploads_offsite/live.staticflickr.com-431-1662075426.5.jpg) |
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| tygaboy |
Sep 1 2022, 06:02 PM
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#18
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914 Guru Group: Members Posts: 5,445 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California
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Chris - I'll get your parts shipped tomorrow. Enjoy!
Chris Attached image(s) 
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| Chris914n6 |
Sep 2 2022, 02:30 PM
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#19
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Jackstands are my life. Group: Members Posts: 3,407 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Those look goooood! (IMG:style_emoticons/default/drooley.gif)
Fun fact - your project and mine spec the same torque ~275 lbft (IMG:style_emoticons/default/burnout914.jpg) QUOTE(tygaboy @ Sep 1 2022, 05:02 PM) Chris - I'll get your parts shipped tomorrow. Enjoy! Chris |
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| tygaboy |
Sep 2 2022, 04:14 PM
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#20
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914 Guru Group: Members Posts: 5,445 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California
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QUOTE(Chris914n6 @ Sep 2 2022, 01:30 PM) Those look goooood! (IMG:style_emoticons/default/drooley.gif) Fun fact - your project and mine spec the same torque ~275 lbft (IMG:style_emoticons/default/burnout914.jpg) QUOTE(tygaboy @ Sep 1 2022, 05:02 PM) Chris - I'll get your parts shipped tomorrow. Enjoy! Chris Ha! But why do I think yours will be running first? (IMG:style_emoticons/default/laugh.gif) |
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