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After owning my 06 base for over 3 years from 60k miles to 111k miles, I decided to pull the trigger on an engine swap. Took a stock VQ35HR and fully rebuilt it from the ground up. Wiring harness was made by Z-fever.
The 06 now has a high revving, torquey, and responsive NA engine tuned on my own using e85 and Osiris Uprev.
On uncalibrated "heartbreaker" DynaPacks, my street tune made 285TQ and 309HP. More cam advance and aggressive ignition timing pushed it up to 287TQ and 328HP. Most dyna packs are known to read high, these ones are claimed not to. I began to believe this claim after I raced my friends 330whp evo and beat him by good amount. The engine definitely shows its teeth on the road.
Build:
370z crankshaft + connecting rods for a mild stroker kit, GReddy 264/264 camshafts, JWT heavy duty valve spring and shim kit, stock HR pistons with new OEM rings, ARP head and main studs, stock GTR connecting rod bolts, new OEM orings, seals, gaskets, stock GTR injectors, walbro 255 fuel pump, Stillen headers, (cheap a$$ test pipes), XYZ y-pipe, custom 3" exhaust, stillen long tube intakes, low mileage 370z transmission, heavy duty concentric slave cylinder, and the popular JWT flywheel + clutch.
Suspension:
SPC rear camber arms, K-Sport Kontrol Pro coilovers, Hotchkis sway bars + SPL pro end links, Parts by Max SAK.
First off, the iPhone 6 has an amazing camera
Nismo V2 polyurethane replica
Drilled and tapped a blox weighted shift **** to sit as low possible without busting a hole through the top lol
The very stock looking HR
My self fabricated 3" single with the GReddy RS muffler
wow, that's very impressive. Great job.
How was the wiring harness provided by z-fever and the electronics transition to the HR motor? Was it all relatively plug and play?
Yeah the wiring harness was straight plug and play. I was about halfway done re-wiring the whole car until I realized it was about to get alot more difficult than I wanted. So I swallowed my pride and paid to have one made Either way, everything works like it's supposed to. Only issue is I can't get the airbag light to stop blinking lol I got over it though. That wiring harness was the most expensive part of the swap but it saved me a lot of headaches
HRmoneypit,
The swap was a good challenge despite the engine and tranny bolting up with no issues. The hardest part was getting over the fact that there's no going back once I do the custom wiring. The chassis will forever hold an HR platform
Last edited by venture210; 11-25-2016 at 04:55 PM.
Personally making the decision to run on E85, I want clarify ALL of the confusion over this topic since there aren't enough helpful threads here. It has been quoted that you need to install some teflon coated lines or convert everything to metal lines.
No.
To do a straight swap over to e85, install bigger injectors (easy to use OEM gtr injectors), a slightly bigger fuel pump (I used a walbro 255) and start adjusting your k fuel multiplier in uprev or whatever tuning software you use. That's it. The stock lines and fuel tank were designed after ethanol was introduced to the fuel market and work with zero issues. Yes, the stock seals are fine too.
My overall gas mileage is 15-16 mpg which is not bad compared to the 21mpg I got with the stock revup engine on 93. To make E85 cost effective, do the math. 93 is 2.45 at the lowest. (2.45)*(15mpg/21mpg)=1.87 for an equivalent E85 price per gallon. E85 is 1.49 right now where I get it. Based off that, I'm saving money. Not to mention the aggressive tune and safer power increase. I'm never going back to 93 lol
I'm slowly building a 3.7 HR as well, albeit a different approach.
I recently acquired an overheated low mileage fx35 motor for pennies (block and heads are junk bc they got soft) to use all hard steel parts. I also purchased a 20k mile bare block and freshly rebuilt heads. Months ago i picked up a 3.7 crank. All together I've spent around $800 to get where I'm at.
Now for the big $ parts:
- JWT 12.5:1 custom pistons to use the longer 3.5hr rods
- JWT cams (possibly the 300 duration Grand Am cams)
- Connecting rods for 9k+ rpms (possibly k1 h beams with 625+ arp bolts, or carillo A beams)
- Billet oil pump gears to hold 9k rpms
- PPE long tube headeres
- vq37vhr intake manifolds + fuel rail
Aiming for 375 whp on e85.
For what it's worth the GTR rod bolts and main cap bolts were what the Grand Am 370z used (with dry sump) to run upto 9.5k rpms . They ran a 3.7 crank, 3.5hr rods, raised wrist pin pistons, and HR heads with 300 duration cams.
All required were 600cc bosh ev14 injectors and a dw200 fuel pump.
Was good for a solid 7-8 hp from 3k-8k over the 93 octane tune.
Originally Posted by venture210
Personally making the decision to run on E85, I want clarify ALL of the confusion over this topic since there aren't enough helpful threads here. It has been quoted that you need to install some teflon coated lines or convert everything to metal lines.
No.
To do a straight swap over to e85, install bigger injectors (easy to use OEM gtr injectors), a slightly bigger fuel pump (I used a walbro 255) and start adjusting your k fuel multiplier in uprev or whatever tuning software you use. That's it. The stock lines and fuel tank were designed after ethanol was introduced to the fuel market and work with zero issues. Yes, the stock seals are fine too.
My overall gas mileage is 15-16 mpg which is not bad compared to the 21mpg I got with the stock revup engine on 93. To make E85 cost effective, do the math. 93 is 2.45 at the lowest. (2.45)*(15mpg/21mpg)=1.87 for an equivalent E85 price per gallon. E85 is 1.49 right now where I get it. Based off that, I'm saving money. Not to mention the aggressive tune and safer power increase. I'm never going back to 93 lol
Just posted it as the last pic. I used GTR rod bolts simply because the hr rod bolts were on back order. I did some research and the GTR rod botls are almost identical to the hr/vhr rod bolts. The main difference being that they are slighty longer. The material was visiably the same as my used hr rod bolts. I used the torque specs out of 2008 350z FSM and have total confidence in my engines reliability.
ian99rt, I look forward to seeing you pull that build off. It's about time people start exploring the NA potential of the hr engines. Intead of getting custom pistons, why not just do forged 370z rods with the stock HR pistons? I've heard that the stock HR pistons are strong... like stupid strong. The only reason to go with forged pistons would be to reduce weight
Last edited by venture210; 11-22-2016 at 06:49 PM.
Just posted it as the last pic. I used GTR rod bolts simply because the hr rod bolts were on back order. I did some research and the GTR rod botls are almost identical to the hr/vhr rod bolts. The main difference being that they are slighty longer. The material was visiably the same as my used hr rod bolts. I used the torque specs out of 2008 350z FSM and have total confidence in my engines reliability.
ian99rt, I look forward to seeing you pull that build off. It's about time people start exploring the NA potential of the hr engines. Intead of getting custom pistons, why not just do forged 370z rods with the stock HR pistons? I've heard that the stock HR pistons are strong... like stupid strong. The only reason to go with forged pistons would be to reduce weight
JWT did tensile testing on the various Nissan rod, mains, and head bolts. They concluded the GTR Rod and main cap bolts are 10%-15% stronger, and that the Juke 4 cylinder head bolts have just a few extra threads of engagement.
If I were to do a v8 swap of some kind, I would do it in a 240sx for a drift car lol
I did an HR swap because I think it's one of the most under-rated engine platforms for NA and boost. Its not impossible to get close to 400 whp NA. Also, the engineering and design of the HR engine is amazing to say the least. If you've noticed, the VQ35HR and the VR38DETT have sooo many similarities but the VR is held in much higher regards. Both engines use the same main and rod bearings AND oil clearances... the oil clearances suprised me a lot actually. As stated before, the rod bolts are almost identical BUT the GTR ones have been tested to be superior (thanks ian99rt). I'll also add that the GTR rod bolts ended up costing a lot less too(more than a dollar per bolt if I remember correctly). That and the native HR transmissions are bullet proof (aside the slave cylinder that we are all aware of). Then there's the user friendly tuning software of UpRev. Self tuned. The OEM gauges would likely never work with a v8. Nissan's V6 engine note is heavenly.
To put it simply, I did an HR swap over a v8 because I love Nissan
Last edited by venture210; 11-27-2016 at 08:07 AM.
Nice to read up my man.... It looks like I need to find a 370 crank and intake hahaha..... Car must be awesome to drive at those HP figures.... Stock oil pump?.. Guys are saying nismo.....
Looks like you running the parts shop max stuff.... Have it on my sx.... World class......:icon21
11-17-2016, 03:16 PM
Vq37hr
Either way, everything works like it's supposed to. Only issue is I can't get the airbag light to stop blinking lol I got over it though. That wiring harness was the most expensive part of the swap but it saved me a lot of headaches
:icon21