Started this thread as I personally can never remember the compatibility between models



5G 2.0i v 5G 2.2

Thanks to Lude_Dude, Kawascream

Exhausts - same from catback to rearbox - most exhaust are listed for 2.2, will fit the 2.0i
Wheels - 2.0i 114.3 x 4 studs - 2.2 114.3 x 5 studs



5G 97/98 v 5G 99/00

Thanks for YellaLude

Exhaust Manifold - section after flexi pipe is longer on the 99/00.
Cat Length - 97/99 34.5cm long, 99/00 39.5cm long.




4G v 5G

Thanks for Prelude_Stan, Kawascream and Taffylude

Exhausts - same apart from one of the hangers on the backbox which will need adjusting

Engine Management - 4G OBD1 - 5G OBD2
Fuel Injectors - 4G Peak & Hold 345cc - 5G Saturated 290cc
Engine Block - 4G Closed Deck - 5G Open Deck
Alternator - Same
Crankshafts - 4G (1992 - 97) 50mm diameter Main Journal - 5G (98 - 01) 55mm diameter Main Journal
Wheels - 4G x 4 studs 114.3 x 4 - 5G 2.2 114.3 100 x 5 studs - 5G 2.0i 114.3 100 x 4 studs


F22 none Vtec vs H23

Thanks for Prelude_Stan, Kawascream

timing belt - same
water pump - same
balancer shaft belt - same
cam seals - same
wheels - same



F22 none Vtec vs H22 Vtec

Below thanks to Oldgit

Dizzy - identical
wheels - same



BB4 vs BB1

Below thanks to Oldgit, Kawascream

BB1 (chassis code) has 4WS and was standard supply in the UK. BB4 was a JDM option, saving approx 50kg of weight due to having fixed rear wheels (2WS). - See UK vs JDM section below

Brakes - same
Shocks - same
Trailing arms etc (Non ABS) - same
Wheels - same


4G JDM vs 4G UK

Exhaust system - vtecmec
Manifold and downpipe are the same length, but have slightly different stud pattern. Cat 4inches shorter on JDM. Centre 4inches longer on JDM. Backbox the same.

JDM Cat is 26.5cm in length (kawa)

Below Thanks to Taffylude, Confused, Sleepy, Ozz and Prelude_stan.


Cylinder head -same.
Pistons - JDM 10.6:1 compression, UK 10:1 compression
Clutch - Same
wheels - Same

Rear storage bin - UKDM and JDM standard fitment on pre-facelift models (92-94)
Air con - UKDM manual adjustment - JDM electronic adjustment
ABS - UKDM standard - JDM optional fitment
numberplate - UKDM long rear plate - JDM Oblong rear plate
Sunroof - UKDM standard - JDM Optional
4WS - UKDM standard fitment - JDM Optional (BB1 with, BB4 without)
Rear fog light - UKDM standard fitment - JDM not factory fitted
SRS (airbags) - UKDM standard fitment - JDM Optional
Windows - UKDM blue/green tint - JDM Bronze tint
Mirrors - UKDM - electric adjustment, manual fold - JDM Electric adjustment AND fold
Limited Slip Differential (LSD) - UKDM not factory fitted - JDM optional (mainly BB4?)
Traction Control System (only with LSD)

Cruise Control - UKDM optional - JDM optional
Rear spoiler - UKDM optional - JDM optional
Mud flaps - UKDM optional - JDM optional
Front fog lights - UKDM optional - JDM optional

Map lights - JDM Option only on Facelift (94-96)
Puddle lights - JDM Option only
High-level brake light - JDM Option only
Side window wind deflectors - JDM Option only
Sunroof wind deflector - JDM Option only
In-dash TV - JDM Option only
Air purifier - JDM Option only
Headlight sensors - JDM Option only
Auto wipers - JDM Option only
Gathers double DIN player with the DSP surround system - JDM Option only
Gathers high level centre dash tweeters - JDM Option only
Cornering lights - JDM Option only
Front/Rear parking sensors - JDM Option only
Keyless Entry - JDM Option only
Parking Pole - JDM Option only
Power Seats - JDM Option only
Boot liner (plastic tray) - JDM Option only

Engine 2.0 (F20) - UK and JDM
Engine 2.2 non-VTEC engine (F22B) - JDM Only
Engine 2.2 VTEC (H22A) - UK and JDM
Engine 2.3 (H23A) - UK only

Comments
One more UK vs JDM difference I noticed on BR1TT3Ns facelift lude - he has a 'headlights on' light on the dash unit (temp/fuel) whereas my JDM doesn't.
JDM has Jap writing everywhere including fusebox, cruise buttons, sunvisor



Prelude vs ATR

Intake Manifold / cams / crank

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Please feel free to add and I'll adjust the first post.

Looking for compatibility or differences between

4G v 5G

UK x JDM

2.0L v 2.2VTEC v 2.3L

Manual v Auto

wheels, brake parts, suspension, engine ancillaries, dizzy's, PGM-FI's etc etc

4th Gen UKDM vs JDM:

JDM standard parts:
Electronic climate control
Single-piece, plastic front headlights
Square rear numberplate surround
More powerful 2.2 VTEC engine (H22A): Higher compression ratio, knock sensor, ECU set for 100 RON fuel


UKDM standard parts:
Manual air conditioning
ABS
Oblong rear numberplate surround
Sunroof
4WS
Engines: 2.0 (F20), 2.3 (H23A), 2.2 VTEC (H22A2)
Rear fog light
SRS (airbags)


Options on JDM:
Cruise Control
Limited Slip Differential
Traction Control System (only with LSD)
Sunroof delete
4WS delete
Engines: 2.0 (F20), 2.2 non-VTEC engine (F22B), 2.2 VTEC (H22A)
Map lights
Puddle lights
High-level brake light
Side window wind deflectors
Sunroof wind deflector
ABS
SRS (airbags)
In-dash TV
Air purifier

Options on both:
Rear spoiler
Mud flaps
Front fog lights



There may well be more - please add/remove from the list if I've got it wrong!

I think cruise was standard on JDMs as well, not an option
The map lights were only an option on the facelift I think

more JDM standard bits (some are a bit trivial!!)

Bronze tinted glass all round
Folding mirrors
No rear fog light
Jap writing everywhere including fusebox, cruise buttons, sunvisor

more JDM options:

Headlight sensors
Auto wipers
Gathers double DIN player with the DSP surround system
Cornering lights
Front/Rear parking sensors
Keyless Entry
Parking Pole
Power Seats
Rear storage bin
Boot liner (plastic tray)
Different gear gaiter (had a round gear selector symbol on it)
Gathers high level centre dash tweeters

UK vs JDM differences:

Option of rear storage box between seats, no rear storage box with a flat divider, or a flat divider with a recess in it.

One more UK vs JDM difference I noticed on BR1TT3Ns facelift lude - he has a 'headlights on' light on the dash unit (temp/fuel) whereas my JDM doesn't


Hopefully someone can compile a huge list from all these posts!!!

2.2 non vtec F22 dizzy same as 2.2 v tec H22
JDM 2ws will go straight on a JDM 4ws brakes, shocks, trailing arms etc (Non ABS)

5g 2.0i and 2.2 exhausts from catback are compatible

which may be obvious but most exhaust are listed for 2.2 but they will fit the 2.0i

As I discovered recently, clutch on UKDM 2.2 and JDM 2.2 are the same. Thats a part changed quite regularly on here so might help someone!

Here's a couple of engine differences off the top of my head between 4th Gen & 5th Gen H22's.

Engine Management

4th Gen = OBD1
5th Gen = OBD2

Fuel Injectors

4th Gen = Peak & Hold 345cc
5th Gen = Saturated 290cc

Engine Block

4th Gen = Closed Deck
5th Gen = Open Deck

Crankshafts

4th Gen (actually 1992 - 97) = 50mm diameter Main Journal.
5th Gen (actually 1998 - 01) = 55mm diameter Main Journal

phew - updated to here

will a 1994 H22A engine fit a 1997 H22A5 car?..because i can't find a replacement engine for my 1997 lude 2.2, but i found a 2.2 from a 1994 model.

You missed corner parking sensors from the JDM model, and maybe the In-dash tv (didn't notice it)

Parking sensors are very rare though...

Paul