Another R2.8 Install (long BH R380 version)

lcdck

Well-known member
Hey Don. Are you up and running with your R2.8 now? I'd love to hear your thoughts on the engine and install.
 

donb

Well-known member
I've been busy but knocked out a few little things that helped a lot over the last couple of months.

The Axis oil pressure sender relocation kit was installed after getting a slight drip on my previous setup (a few Home Depot plumbing pieces to get the big VDO sender to fit directly to the port).

Pictures will look a little different as I redid the setup but I always feel more pictures the better.
 

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donb

Well-known member
A big improvement was made with the QD throttle relocation kit. The Cummins supplied setup was super touchy and with the rough ride of the Defender going over any bumps or slow speed it would be hard to keep the throttle pressure even.

 

dkemm

Well-known member
A big improvement was made with the QD throttle relocation kit. The Cummins supplied setup was super touchy and with the rough ride of the Defender going over any bumps or slow speed it would be hard to keep the throttle pressure even.

I agree!! I made the change to the QDB kit also. Mine is RHD, so I had to fab a bracket that attached to my clutch pedal box. Only issue that I have is running out of pedal distance before WOT on the sensor. Hasn’t been a big deal, except when trying to drive above 75mph on a hill. I may look love you to design of an eccentric cam.
 

MountainD

Technical Excellence Contributor
I agree!! I made the change to the QDB kit also. Mine is RHD, so I had to fab a bracket that attached to my clutch pedal box. Only issue that I have is running out of pedal distance before WOT on the sensor. Hasn’t been a big deal, except when trying to drive above 75mph on a hill. I may look love you to design of an eccentric cam.
Just a thought, but if you lowered the attachment point of the cable barrel at the TPS (on the same arm, just lower) you would require less pedal throw for more rotation and may solve your WOT issue.
 

MountainD

Technical Excellence Contributor
I've been busy but knocked out a few little things that helped a lot over the last couple of months.

The Axis oil pressure sender relocation kit was installed after getting a slight drip on my previous setup (a few Home Depot plumbing pieces to get the big VDO sender to fit directly to the port).

Pictures will look a little different as I redid the setup but I always feel more pictures the better.
Since we are utilizing different front covers, our set ups differ—on the front cover with integrated oil filter, there is also not enough room for the common VDO sender (just barely!). I chose to just slightly relax the front cover so it fit (im always wary of drips too—and I wanted to eliminate as many connections as possible). Since I know several folks received (or changed as I did) to integrated covers, I just thought I’d mention it. It didn’t take much, but I don’t think this is possible with the remote oil filter cover. Just so folks know the covers differ. Your conversion looks awesome! And I’m stoked your sharing these solutions—I always love seeing what you’re doing!
1656683312654.png
 

dkemm

Well-known member
Just a thought, but if you lowered the attachment point of the cable barrel at the TPS (on the same arm, just lower) you would require less pedal throw for more rotation and may solve your WOT issue.
I thought about that as the simple/easy option, but I think the concern is how it is keyed (square hole attachment). I either have pedal hitting the floor or the cable end hitting the threaded mount before WOT.
Maybe I can think about it this holiday time off
 

MountainD

Technical Excellence Contributor
I thought about that as the simple/easy option, but I think the concern is how it is keyed (square hole attachment). I either have pedal hitting the floor or the cable end hitting the threaded mount before WOT.
Maybe I can think about it this holiday time off

I loosened the bolt that restricts (floored) position of the pedal to the point that the travel resulted i. The TPS unit bottoming out. I’ll see if that helps for WOT.
 

dkemm

Well-known member
I loosened the bolt that restricts (floored) position of the pedal to the point that the travel resulted i. The TPS unit bottoming out. I’ll see if that helps for WOT.
any luck with that? I tried to re-run the calibration yesterday.
1. I screwed the pedal bolt IN so that the pedal didnt bottom out on the floor (as it was doing)
2. tried pedal dance several times - no luck getting it to begin.
3. I screwed the bolt back out - tried pedal dance again - still not start of calibration.

The only thing I didnt try is pulling the carpets so that the pedal went to the floor. this might have been how I ran calibration before.
I have had past success running calibration sequence with cummins pedal and with QDB TPS.
Rio Kondo posted on FB that the sensor maxes out its reading at a certain point....which means that cable pull does not have to match the sensor start and end points (idle to WOT)
 

MountainD

Technical Excellence Contributor
I want to make sure this thread stays focused on Donb’s awesome build, suffice it to say yes. But may help DonB. Don, reach out if trouble with pedal dance and I’ll elaborate!
 
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donb

Well-known member
I want to make sure this thread stays focused on Donb’s awesome build, suffice it to say yes. But may help DonB. Don, reach out if trouble with pedal dance and I’ll elaborate!

Funny that this came up as I've been driving my 110 around and I seem to be noticing a hesitation and flat spot. I'm wondering if I need to do another calibration cycle? Did you guys do that after you installed the QD throttle relocation? I did my first calibration with the Cummins pedal.
 

dkemm

Well-known member
Funny that this came up as I've been driving my 110 around and I seem to be noticing a hesitation and flat spot. I'm wondering if I need to do another calibration cycle? Did you guys do that after you installed the QD throttle relocation? I did my first calibration with the Cummins pedal.
Donb, I have gone through a few intake positions - so I have recalibrated each time. Recently I installed my QDB TPS... and I thought I recalibrated again...but perhaps not. It has been running fine - no flat spots...but I did notice on one of my highway runs...a longer hill....that had the pedal to the floor but could only sustain about 75mph (was able sustain higher with pedal space using the cummins pedal previously). I thought that perhaps a recalibration would reset the WOT position using factory pedal/QDB TPS. But I have not been able to get it to go into calibration mode this week. I dont have any other issues. I am wondering if your hesitation / flat spot is more intake recalibration than tps pedal calibration....
 

donb

Well-known member
Donb, I have gone through a few intake positions - so I have recalibrated each time. Recently I installed my QDB TPS... and I thought I recalibrated again...but perhaps not. It has been running fine - no flat spots...but I did notice on one of my highway runs...a longer hill....that had the pedal to the floor but could only sustain about 75mph (was able sustain higher with pedal space using the cummins pedal previously). I thought that perhaps a recalibration would reset the WOT position using factory pedal/QDB TPS. But I have not been able to get it to go into calibration mode this week. I dont have any other issues. I am wondering if your hesitation / flat spot is more intake recalibration than tps pedal calibration....

Good points - I cannot remember if I calibrated and then changed the intake setup. I'm sure it's worth doing it again.
 
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