USA spec Frontier YD25 engine swap

Shop deals on ebay
shop deals on amazon
Advertise with us
Nissan Navara Forum

Help Support Nissan Navara Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Today I spend the afternoon pulling the front core support out with a come along and tree!! It's all lined up now. I was able to test fit the Navara air box I received in the mail yesterday and it fits perfectly and all three bolts line up. I'm taking my time and repainting the front end with multiple coats of paint and then coating it with an anti corrosion coating. Here in Florida the front ends can start getting rusty in just a few years. The truck is actually in very good shape so I want to protect it while I still can. I'll post some pics later this week.
 
Here is a few pictures of this weekends progress. I ordered a set of silicone radiator hoses from Australia and they fit no problem. I put a little bleeder hole in the radiator cap on the radiator itself so it would bleed any air out to the tank on the passengers side like it did for the VQ40 motor. I need to have a power steering line made and I can put the last belt on. I have 2” aluminum tubing so I can fab up the charge piping for the front mount intercooler which should be here soon.

IMG_5389.jpeg
IMG_5390.jpeg

IMG_5391.jpeg
IMG_5392.jpeg
 
Last edited:
So the gauge cluster and 4WD module showed up today. I plugged in the Navara 4WD module to test my theory and sure enough the 4wd light went off as soon as it started to communicate with the ECU. Next is the gauge cluster!
 
Does anyone have a power steering pump pulley they’re willing to sell? The pulley I put on was bigger and does not make enough pressure at idle.
 
I got the intercooler mounted solid on the crossmember and some of the charge piping mocked up. The drivers side (LHD) will have the most bends, but will have plenty of room without cutting into the body at all. I have a 45deg silicone reducer for the throttle body side that should be here this week.

IMG_5402.jpeg
IMG_5403.jpeg
IMG_5404.jpeg
 
Question for you guys. Does the Glow plug relay operate off a PWM signal during warm up? The other day I could hear the relay cycling right after I started it for the first time that day. I’m wondering if I need to switch to a solid state relay?
 
Not as far as I'm aware. From my reading, it's supposed to simply come on solid until the coolant temp reaches 85C and then it turns off. If it was modulating it might be trying to reduce the temperature of the glow plug, which doesn't make a lot of sense either. You want the fuel to combust!
 
It looks like it does pulse the glow plug relay on warm up so I'm going to swap out the relay for a solid state one. I'm having the issue where the truck goes into limp mode after doing the surge dance. From what I'm reading the SCV needs a cleaning or replaced. I'll try cleaning it first to see if that resolves the issue.
 
YD25Frontier said:
It looks like it does pulse the glow plug relay on warm up so I'm going to swap out the relay for a solid state one. I'm having the issue where the truck goes into limp mode after doing the surge dance. From what I'm reading the SCV needs a cleaning or replaced. I'll try cleaning it first to see if that resolves the issue.
Click to expand...

The SCV is a known issue with these engines. I've had to replace mine a couple of times and have run injector cleaner through to resolve the hunting issues a few times now.
 
I pulled the SCV off today and it looked like new and operated just fine when I taped 12v to it. After doing more research I found out you can get the same surge from the engine if it detects the torque converter slipping. Turns out I was 2.5qts low on transmission fluid!! Topped it off and working like a charm now.

Can anyone tell me if you can hear the factory glow plug relay when it’s energized or is it silent? That will tell me if it’s a solid state relay or not.
 
YD25Frontier said:
I pulled the SCV off today and it looked like new and operated just fine when I taped 12v to it. After doing more research I found out you can get the same surge from the engine if it detects the torque converter slipping. Turns out I was 2.5qts low on transmission fluid!! Topped it off and working like a charm now.

Can anyone tell me if you can hear the factory glow plug relay when it’s energized or is it silent? That will tell me if it’s a solid state relay or not.
Click to expand...
The relay clicks, not loudy though
 

Similar threads

Y
Hello from Florida
Replies
9
Views
818
hotshot 5691
hotshot 5691
X
D40 YD25 126KW MNT SWAP FOR VSK 140KW
Replies
0
Views
252
xland
X
B
Yd25 engine swap compatibility
Replies
2
Views
954
australianoz
australianoz
E
Engine swap Yd25 & Td25
Replies
0
Views
528
Emil0048
E
S
Engine swap 2010 into a 2007 Spanish D40 YD25 - will it work?
Replies
2
Views
1K
ScottSummers
S

Latest posts

Back
Top