JPI 700 -> GI 275 migration

[FlyingDude]

Hi guys,

Has anyone swapped their JPI700 with a GI 275 and reused the existing CHT, EGT and fuel flow sensors?  The ones in the JPI manual are also covered in the Garmin manual, so in theory they are a match.  Any pireps?

I "did" think of migrating JPI 700 into a higher model.  JPI 730/830 are not primary instruments and I literally do not have enough room for both the steam gauge primaries and a JPI 830 secondary...  JPI 930 is a primary instrument, but it's too big.  It'd go to the far right to replace the Garwins but I'd like the engine instruments close enough for better instrument scanning.  GI275 would fit in the 3.125" hole right in front of my face if I remove the R-1 rpm to the left of the radio stack.  Maybe I'll keep the existing bourdon Map, fuel press and oil press sensors for redundancy because they don't hurt.  But I'd INOP the fuel qty and oil temp gauges.  I'm on the fence regarding the amp meter.  I might (need to study the do-ability in a certified aircraft) keep the existing battery-amp sensor and use the electronic unit's sensor as alternator-output amp sensor.  Though wife liked the idea of removing the Garwins altogether and making a glove compartment over there.  

Thanks...

[KSMooniac]

Why not the EDM 900?  That's what I did to replace my 700, and installed it on the pilot side of my J panel.  Removed all of the original engine instruments and don't miss them a bit.

Contact @Aerodon and make a deal!

[FlyingDude]

5 minutes ago, KSMooniac said:

Why not the EDM 900?

Too big...

[KSMooniac]

The 900 can fit in any Mooney panel. The 930 is much larger and more difficult.

Sent from my LM-V600 using Tapatalk

[FlyingDude]

1 hour ago, KSMooniac said:

Contact @Aerodon and make a deal!

Sent him an email

[M20S Driver]

I have a JPI 700 on the copilot side.  Can I install a 900 or 930 on the left side of copilot panel and use it as primary?  Has anyone done this with no issues in ease of using it?

[KSMooniac]

My opinion, the 900 is an ideal replacement for any Mooney panel, provided it is put on the pilot side of the panel.  No screens to toggle through in flight, but the fonts are small enough that it might be an issue to the right of the radio stack.  Of course the vintage Mooney 6-pack was right of the stack and quite small, but that wasn't a great idea back then either.  My original J layout had a single strip of engine instruments above the 6-pack, and larger RPM/MP/FP on the far right side, angled for better viewing.  That worked fine.  Single engine planes ought to have vital engine instruments in the primary viewing area IMO, although I don't believe that is a cert requirement.  

The 930 is a wonderful instrument as well, but so large that it very likely needs to live on the right side, and perhaps even angled a bit.  I've not flown behind one, though, only viewed at the shows.  Even if the costs were the same, or perhaps the 930 was less expensive, I would still choose a 900 on the LHS of the panel.

Don Kaye managed to install the EI MVP-50 on the LHS of his panel, but he has the big Bravo panel with more room.  I know he loves it.

[Aerodon]

I have an EDM900 in a M20K - mounted left of the radio stack, just above the switches. I have not flown much behind it yet, but I would say that if it was right of the radio stack I would be wishing for the larger 930.  One of the advantages of having my own CNC machine is that I can try out different layouts relatively inexpensively - I think I want to try one where I mount the EDM900 in the top row and the standby GI275 (and gear switch) in the bottom row.

I have not tried a GI275 EIS yet, but I think it would be pretty good on pilots side.  I looked through the installation manual, and I think you could reuse most of your JPI probes and wiring, but they are in different pin locations.

Aerodon

 

 

 

 

 

 

 

[ArtVandelay]

I have a JPI 700 on the copilot side.  Can I install a 900 or 930 on the left side of copilot panel and use it as primary?  Has anyone done this with no issues in ease of using it?

I have it on the copilot (right radio stack) side, the font is about the same as my CB labels, I estimate the distance from my eyes between having on right vs left radio stack is 33” vs 29”, not really a big difference. There simply wasn’t enough space to fit it in on the left side. I do have to lean towards it a little to push the buttons (same for transponder), neither I do very often.

[McMooney]

11 hours ago, FlyingDude said:

Hi guys,

Has anyone swapped their JPI700 with a GI 275 and reused the existing CHT, EGT and fuel flow sensors?  The ones in the JPI manual are also covered in the Garmin manual, so in theory they are a match.  Any pireps?

I "did" think of migrating JPI 700 into a higher model.  JPI 730/830 are not primary instruments and I literally do not have enough room for both the steam gauge primaries and a JPI 830 secondary...  JPI 930 is a primary instrument, but it's too big.  It'd go to the far right to replace the Garwins but I'd like the engine instruments close enough for better instrument scanning.  GI275 would fit in the 3.125" hole right in front of my face if I remove the R-1 rpm to the left of the radio stack.  Maybe I'll keep the existing bourdon Map, fuel press and oil press sensors for redundancy because they don't hurt.  But I'd INOP the fuel qty and oil temp gauges.  I'm on the fence regarding the amp meter.  I might (need to study the do-ability in a certified aircraft) keep the existing battery-amp sensor and use the electronic unit's sensor as alternator-output amp sensor.  Though wife liked the idea of removing the Garwins altogether and making a glove compartment over there.  

Thanks...

I"m going with a gi-275 when the budget allows.  super nice.

[M20S Driver]

Thanks for all the info KSMooniac, Aerodon, and ArtVandelay.   I have the old fashion panel on the left side with a storm scope.  The JPI 700 and Tachometer on the right side could easily be replaced with the JPI 930 with minimum hassle.  My old Moritz gauges have held up so far, but I am not sure how much more life is left in them.  I think JPI 930 on the right side is probably my best option.

Art: Your panel looks great.  I am saving my money, but I am sure it was not cheap 

[LANCECASPER]

If you’re cutting a new panel, with some planning you can fit a JPI930 on the left side, depending on what else you plan on for a PFD or MFD

 

[KSMooniac]

Lance has been there/done that a few times already!

If it were me, I'd move the Stormscope to the right side and drop an EDM-900 where it currently lives...that is where I have mine in an old J.  I look at it more than anything else on the panel.  Ideally a Stormscope upgrade to a 500 to display on the 530 would be nice, but likely not feasible these days, cost-wise.

[M20S Driver]

9 hours ago, LANCECASPER said:

If you’re cutting a new panel, with some planning you can fit a JPI930 on the left side, depending on what else you plan on for a PFD or MFD

 

That's a nice arrangement.  I also like the 930 on the left side too if it is not very painful $$$.

[LANCECASPER]

8 minutes ago, M20S Driver said:

That's a nice arrangement.  I also like the 930 on the left side too if it is not very painful $$$.

The first one (N312D) was an Ovation that I bought that had gone through an upgrade. I liked it so I did the second one on a Bravo that I bought after the Ovation 

[ArtVandelay]

If you’re cutting a new panel, with some planning you can fit a JPI930 on the left side, depending on what else you plan on for a PFD or MFD


 

For those who aren’t familiar, the long bodies have a taller panel than the mid bodies, so keep that in mind when you see a panel.

[KSMooniac]

Tom is very correct re: panel height with the long bodies.  I wonder, though, if Lance's layout could be duplicated in an intermediate body like mine.  The more I look at it, the more I love it, especially with the PFD centered on the yoke!  Easy knob access and it falls right where you should naturally look IMO.  If one were to delete (more elsewhere) the second row of switches and other bits and shift the Aspens & JPI down, it might work.  Maybe.  Having a single LHS panel helps create more usable space too, versus having the separate far left small panel like my J, which has the Bendix switch and a pair of 2 1/4" instruments stacked above it.  I need to make a new one of those and lose one instrument when I upgrade to the Electroair kit soon.  I'm not yet ready to go to a single-piece panel, though, but hope to someday.

[Pinecone]

Take a close look sitting in your plane.  In my 252, my body is not centered on the center of the yoke.  The yoke is to the left of my midline.  So, for me, the PFD would be to the right of the yoke tube.

[ArtVandelay]

Take a close look sitting in your plane.  In my 252, my body is not centered on the center of the yoke.  The yoke is to the left of my midline.  So, for me, the PFD would be to the right of the yoke tube.

If you look at my picture above, I’m leaning to the right to center it, so yoke is to the left, I think the PFD still looks best.

[bixmooney]

On 7/11/2023 at 9:22 AM, FlyingDude said:

Hi guys,

Has anyone swapped their JPI700 with a GI 275 and reused the existing CHT, EGT and fuel flow sensors?  The ones in the JPI manual are also covered in the Garmin manual, so in theory they are a match.  Any pireps?

I don’t know if you got an answer about using the old probes with the 275.    Did you ever resolve this ?   I would be interested in doing the same.  

[PT20J]

3 hours ago, bixmooney said:

I don’t know if you got an answer about using the old probes with the 275.    Did you ever resolve this ?   I would be interested in doing the same.  

I swapped out an EDM 700 for a G3X EIS and kept all the same CHT, EGT probes and fuel flow transducer (except the OEM primary CHT which was replaced with a JPI CHT probe to match the rest). If they are listed in the GI 275 installation manual and in good condition, they will work.