216 Honda SOHC Auto Engine into Rover 25

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The Origina lNom
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216 Honda SOHC Auto Engine into Rover 25

#1 Post by The Origina lNom » Sat Dec 01, 2018 4:32 pm

Has anyone ever tried to do this ?
I vaguely remember someone saying it was not possible with the manual gearboxed engine.

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1234dist
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Re: 216 Honda SOHC Auto Engine into Rover 25

#2 Post by 1234dist » Sat Dec 01, 2018 4:46 pm

anything is possible but is it worth the hassle.

Really, really, really not.

Lets start with the basics:
Front body loom,
Dash from a honda (for the dash loom)
engine loom
engine
gearbox
gear lever
engine mounts
steering column
power steering...

Not to mention the welding required for the engine mount brackets.

ok i'm bored.
220 Coupe turbo K785OAT (issues :glare )
Rover Sport 220GTI m-series K56AEP
218 VVC Cabriolet R220OVR
220 GTI M-series J777RAL
75 2.0 CDT P80CJM
620 SLI P267LOM HONDA
420 GSI Turbo L191CVP

The Origina lNom
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Re: 216 Honda SOHC Auto Engine into Rover 25

#3 Post by The Origina lNom » Sat Dec 01, 2018 6:07 pm

Thank you.

Cromp85
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Location: Dudley, West Midlands

Re: 216 Honda SOHC Auto Engine into Rover 25

#4 Post by Cromp85 » Sat Dec 01, 2018 7:05 pm

Where there is a will there is a way, just make sure you have a full electrical WSM.
Thinking about the differences between the Honda and Rover engined R8s you will need a whole running 216 as a donor.
As project i fitted the body electrics from a 2002 ZR into a 2005 MK2 R25 suffering the Pektron BCU issues
(Mint low mileage car from a breakers for £100 :D )
The only R25 wiring that remained unmodified was the engine loom. Bear in mind that both cars were identical except that the 2005 car had ABS and Air con.
My Rovers to date:
1994 Rover 220GSI in Tahiti blue (On the road)
2002 MG ZR 105 in Solar red (On loan)
1995 214i (On SORN)

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Johnny 216GSi
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Re: 216 Honda SOHC Auto Engine into Rover 25

#5 Post by Johnny 216GSi » Sun Dec 02, 2018 12:28 am

1234dist wrote:
Sat Dec 01, 2018 4:46 pm
anything is possible but is it worth the hassle.

Really, really, really not.

Lets start with the basics:
Front body loom,
Dash from a honda (for the dash loom)
engine loom
engine
gearbox
gear lever
engine mounts
steering column
power steering...

Not to mention the welding required for the engine mount brackets.

ok i'm bored.
I've seen *some* Rover 25 sub-frames that look identical to the Honda one, but without the front engine mount bracket. There are 2 types of front sub-frame and one might swap with a Honda variant. Not sure about the rear but this might also be a straight swap, if you can find one (the K series rear subframe may look the same, but it won't have the bolt pattern for the Honda mount). I realise that only gets two mounts sorted, and you've got left and right to do. You could be optimistic and say that if the R8 was available with Honda and K engines, then *perhaps^ the chassis holes for left and right are common and because the R3 front end is essentially an R8 front end, they kept all the hole and mount point geometry the same. In which case, you just have to nab all the various load-sreading plates/adapters and mounts from a 216. This is pure guesswork, though. The front suspension is basically the same, so a wild guess would be that it should all fit including the driveshafts.

The rest will be fun. Completely different ECU and loom - all electrics completely different with respect to the engine at least. Atmospheric barometric pressure sensor inside the car, ECU controlled anti-resonance chamber tucked away under the offside front wing, different air intake and box, etc, etc. The ECU fits under the passenger footwell in an R8. They probably do that for a reason - it probably doesn't like being outdoors. Not sure where you'd put it in an R3.

It's near-insanity, but then insanity seems to be what drives most projects these days. Good luck!
Rover 216GSi K reg. Flame Red over Tempest Grey

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1234dist
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Re: 216 Honda SOHC Auto Engine into Rover 25

#6 Post by 1234dist » Sun Dec 02, 2018 1:53 pm

In short, no its not worth it.
220 Coupe turbo K785OAT (issues :glare )
Rover Sport 220GTI m-series K56AEP
218 VVC Cabriolet R220OVR
220 GTI M-series J777RAL
75 2.0 CDT P80CJM
620 SLI P267LOM HONDA
420 GSI Turbo L191CVP

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