Announcement

Collapse
No announcement yet.

N52 Swap Discussion

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • hoveringuy
    replied
    My mini-depot overhaul is complete. I'm pleased with the utility of the new reservoir, the level sender works great! I need to add a flow restrictor to the bleed line because the 3/8" line flows WAY too much (but it is effective)

    Coolant temperature seems to take longer to come up to temperature, it's freezing outside presently, so that's a lot of the reason, but I also wonder if it's because the oil is now being heated by the coolant....?

    I had a small weep from the (original!) coolant pipe O-ring, as well as small oil weeps from the also-original VANOS and cam sensor O-rings. Everything else looked fine.

    Also a picture with the two styles of coolant pipe, with and without oil heat exchanger bleed nipple.





    Click image for larger version

Name:	Capture3.jpg
Views:	107
Size:	181.4 KB
ID:	10131224 Click image for larger version

Name:	Capture4.jpg
Views:	85
Size:	171.9 KB
ID:	10131226 Click image for larger version

Name:	Capture5.jpg
Views:	85
Size:	165.0 KB
ID:	10131228 Click image for larger version

Name:	Capture2.jpg
Views:	85
Size:	176.3 KB
ID:	10131225 Click image for larger version

Name:	Capture.jpg
Views:	90
Size:	174.0 KB
ID:	10131227

    Leave a comment:


  • hoveringuy
    replied
    moatilliattaAlso, the baffle isn't there primarily to be a baffle

    That's just a bonus.

    It's a structural element because I have large, flat sides and 10psi really adds-up!

    Leave a comment:


  • hoveringuy
    replied
    moatilliatta The outlet hose is still bigger than the bleed hose from the radiator, so the operational impact will be exactly zero. The practical impact will be that the system will take a few more minutes to fill, but my hose is smaller, shorter and out of the way. I also have a multi-level tree in the tank to help visually determine fluid level

    For temp I had a calibrated thermocouple in the middle of the pan through the dip tube. "actual" oil temp could have been higher!

    Click image for larger version

Name:	PXL_20241115_224440939.jpg
Views:	131
Size:	162.0 KB
ID:	10130919

    Leave a comment:


  • moatilliatta
    replied
    I'm guessing expansion tank hose size determines the flow of water filling system minus the amount of air that can bleed back to it?

    Other than that no effect on cooling, I suppose it could be 3/8 or even 5/16 hose could be used in theory?

    I've thought about downsizing expansion tank hose size on some builds for packaging.


    Were those oil temps in the pan or at the Oil Filter Housing?

    Leave a comment:


  • hoveringuy
    replied
    A coupla small updates in progress....

    My oil temps without any cooling was running 265F at the track which is not horrible but I really need a cooler, so fitting the integrated oil/coolant heat exchanger to see how much it comes down. I'd be happy with anything below 230 and I can change to a dedicated oil cooler if I need to in the future (N54 style). Still almost an inch of clearance between the cooler neck and the radiator.

    Also, to make room for a potential revised intake I'm moving the coolant reservoir to the battery tray. I HAVE THE CAD FOR THIS if anybody wants it.. It will now tee in at the heater core, need to move radiator bleed nipple to the right side as well. It will be more-better.

    I also changed the VANOS solenoid O-rings while the radiator is out. Impossible to do with the radiator in. Very easy job and the old O-rings were pretty hard.

    Click image for larger version  Name:	Capture.jpg Views:	0 Size:	176.4 KB ID:	10130850 Click image for larger version  Name:	Capture2.jpg Views:	0 Size:	173.6 KB ID:	10130849 Click image for larger version  Name:	Capture3.jpg Views:	0 Size:	189.1 KB ID:	10130851 Click image for larger version  Name:	Capture4.jpg Views:	0 Size:	122.4 KB ID:	10130852
    Last edited by hoveringuy; 11-25-2024, 06:24 PM.

    Leave a comment:


  • Donkeyshins
    replied
    I'm planning on upgrading my N52 in my 128i to include the oil / coolant heat exchanger (have all the parts in a Rubbermaid bin in the garage, just need to get my son's car running again first so he isn't borrowing my E82 all the time) as it is a relatively simple job (other than messy because oil+coolant).

    Leave a comment:


  • Donkeyshins
    replied
    Originally posted by hoveringuy View Post

    The oil temp comes from the sump module that also does the oil condition and oil level analysis. I deleted that and just have the dipstick so I have no other way of getting oul temp.

    My goal is to ensure that it's Ok under the worst conditions and then not worry about it...
    Good to know. Thank you for clarifying (wasn't aware that it was doing temp on top of condition / level).

    Leave a comment:


  • hoveringuy
    replied
    Originally posted by Donkeyshins View Post

    If you are using the stock N52 sensors, you should be able to pull oil temp (for example, I was able to pull oil temp in my 128i simply by the addition of a 135i cluster) from the DME. Not sure what would be needed to translate this to a gauge, though.
    The oil temp comes from the sump module that also does the oil condition and oil level analysis. I deleted that and just have the dipstick so I have no other way of getting oul temp.

    My goal is to ensure that it's Ok under the worst conditions and then not worry about it...

    Leave a comment:


  • Donkeyshins
    replied
    Originally posted by hoveringuy View Post
    For the record, here's my oil temp at 75F ambient after a good 10 lap flogging. No oil cooler, just the steel pan. Temp taken by running a thermocouple down the dipstick tube.

    I have an oil cooler in the wings and I'll see what the difference is...

    Click image for larger version

Name:	Capture.jpg
Views:	201
Size:	171.7 KB
ID:	10122479
    If you are using the stock N52 sensors, you should be able to pull oil temp (for example, I was able to pull oil temp in my 128i simply by the addition of a 135i cluster) from the DME. Not sure what would be needed to translate this to a gauge, though.

    Leave a comment:


  • hoveringuy
    replied
    Originally posted by Caperix View Post
    The temps are not horrible for synthetic oil. How much clearance do you have off the front of the oil filter housing? The oil to coolant cooler is the easiest to plum & heats up the oil quicker. There are top & bottom outlet adapters for oil to air coolers used on n54/5 that are a bit thinner & just need an adapters.
    Lots of room and I've collected all the pieces to do the coolant-oil heat exchanger.

    I'll repeat this exercise in the next several months to see what the actual difference is. Data!

    Leave a comment:


  • Caperix
    replied
    The temps are not horrible for synthetic oil. How much clearance do you have off the front of the oil filter housing? The oil to coolant cooler is the easiest to plum & heats up the oil quicker. There are top & bottom outlet adapters for oil to air coolers used on n54/5 that are a bit thinner & just need an adapters.

    Leave a comment:


  • hoveringuy
    replied
    For the record, here's my oil temp at 75F ambient after a good 10 lap flogging. No oil cooler, just the steel pan. Temp taken by running a thermocouple down the dipstick tube.

    I have an oil cooler in the wings and I'll see what the difference is...

    Click image for larger version

Name:	Capture.jpg
Views:	201
Size:	171.7 KB
ID:	10122479

    Leave a comment:


  • hoveringuy
    replied
    Great track day yesterday, Turn 2 "late apexing" at the Ridge. $300 for a few 30 minute sessions followed by OPEN TRACK from 5-8pm, it was an all-you-can-eat buffet of driving!

    I'm getting used to the Mk60E5 ABS and it is amazing; it's the German hand of God.

    I had also added a Derale heatsink power steering cooler and I was really pleased with how well it works. With the stock E90 power steering pump and pulley, back in the day, I was exceeding 300F at my first track events with the N52, plus the steering was overboosted. A reduction in pressure with a 100bar Cayman regulator got the temps down to 270F which is still hot.

    I never saw anything over 200F yesterday and I will call this "sorted". My other option was to run a small radiator in front but I don't necessarily want the extra plumbing. Dunno, but this seems fine mounted on the frame rail and it's pretty out of the way.





    Click image for larger version

Name:	Capture2.jpg
Views:	311
Size:	180.6 KB
ID:	10119660 Click image for larger version

Name:	Capture.jpg
Views:	253
Size:	201.6 KB
ID:	10119662 Click image for larger version

Name:	Capture3.jpg
Views:	251
Size:	176.3 KB
ID:	10119661 Click image for larger version

Name:	Capture4.jpg
Views:	249
Size:	32.9 KB
ID:	10119663







    Last edited by hoveringuy; 05-01-2024, 01:12 PM.

    Leave a comment:


  • hoveringuy
    replied
    Originally posted by moatilliatta View Post
    I figured it would be closer to 52/48 F/R.

    Id measure out 1/2 tank with driver weight to get closest scaled setup.

    Probably disconnect the swaybars incase they are preloading.
    I couldn't sit in the seat without maxing the scale, so I put 100lbs in the seat in addition to each empty corner reading, then I doubled the difference to come up with the attached.

    Error is probably +/-5lbs per wheel, but it's pretty close. I mean, when I do a home alignment and then get it professionally done I'm usually within a tenth of a degree.

    As far as the 54%, while I've taken a lot of weight off the nose, I've taken even more out of the back. Trunk tar, tools and battery alone is probably 80lbs. A CF hood will get me closer to 53%.

    In any case, Nissan says 54% is "perfect", so there ya go.... https://www.reddit.com/r/cars/commen...erfect_weight/

    Click image for larger version

Name:	Capture.jpg
Views:	415
Size:	69.4 KB
ID:	10115335

    Leave a comment:


  • moatilliatta
    replied
    I figured it would be closer to 52/48 F/R.

    Id measure out 1/2 tank with driver weight to get closest scaled setup.

    Probably disconnect the swaybars incase they are preloading.

    Leave a comment:

Working...
X