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Old 06-25-2006, 12:43 PM   #1
t3hWIT
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Question 1.8 vs 2.2 vs 2.5 clutch kits

Here's a game of numbers for yah. I drive a '95 Impreza, 1.8, 5spd. I am swapping in a 2.2 out of a 97 with a 4EAT. I can take the flywheel off the 1.8 and it will bolt up properly to the 2.2, correct?

My main concern though is the fact that I need a new clutch. Should I just get a new 1.8 clutch kit since I have a 1.8 flywheel, should I use the 2.2 clutch since I will have a 2.2 in it ( and will it bolt up properly to the 1.8 flywheel) or should I get a 2.5 clutch because it is made to hold up to more power? The later was suggested because I was told the difference was a stiffer pressure plate. I don't know any size differences, or what will bolt up to what. I just want to get all of this covered, since this is my main concern with this swap and I need to have it all done in one weekend.

If it matters as far as grip goes, its AWD, and I have the basic mods of the intake, full exhaust sans headers, SAFC, and a pulley set.

Any suggestions?
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Old 06-26-2006, 09:57 AM   #2
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when in doubt use the same clutch for the engine. if the 2.2 has a flywheel on it use 2.2 clutch. IIRC all subys use the same size(diameter) clutches wit hdifferent spring rates, and pull vs push type(this may cause different diameters to be used). use the 2.2 or 2.5 it'll be better. but all should work.

--keith
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Old 06-26-2006, 11:36 PM   #3
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You'll want to find a 2.2L or 2.5L flywheel and run a 2.5L spec clutch disc. The STOCK 2.2L pressure plate sucks ass. If you buy stock replacement, get 2.5L spec clutch kit.

The 1.8L flywheel, pressure plate and disc will bolt onto the 2.2L, it's just that it will not hold the power as well when you're driving hard on it.
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Old 06-27-2006, 06:51 PM   #4
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So I can use an oem 2.5 on the 1.8 flywheel then, correct?
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Old 06-28-2006, 11:05 AM   #5
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no....the flywheel/pressure plate bolt pattern on the 1.8L are different from the 2.2L/2.5L.

If you have purchased a 2.5L pressure plate/disc, you have to use it on a 2.2L/2.5L flywheel. It will not bolt onto the 1.8L flywheel.
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Old 06-28-2006, 05:17 PM   #6
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I started getting clutch chatter a few months ago, and its getting progressivly worse. My 1.8 has 113k miles on it, so I thought now would be a good time to change the clutch, as well as maybe upgrade a bit for the little more power I am expecting. I don't have a 2.2 or a 2.5 pressure plate, and I dont think I'll be able to find one in time for this swap. This sounds like a bit of a mess, looks like I'll have to deal with the slippage and just update/upgrade the clutch and flywheel at the same time.

Thanks for all the info.
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Old 06-29-2006, 01:41 AM   #7
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I just noticed (and ended up buying) an ebay deal for an Exedy clutch kit for the EZ30 H6. I wasn't even aware that they came with manual trannies....but a quick check in the Exedy application guide showed the same part# as the later EJ25s.....Maybe JDM has manual available. Long story short, I just picked up an Exedy clutch for $150 complete....that might help you get something quick and not cost $400+

Jay Storm
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Old 06-29-2006, 03:06 PM   #8
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good price, DAMN! good heads up too jay! usdm definately never cane manual, but JDM is the promised land

--keith
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Old 06-29-2006, 05:38 PM   #9
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That's what I was thinking, going ebay. When I put the EJ20 in irishhockeypimp's 99 RS, he got an oem exedy kit off ebay. Something like $150. We ended up needing a new pilot (?) bearing (the one in the flywheel) but that only cost $15 from A&A and its still way cheaper than the $300 Autozone wants.
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Old 06-30-2006, 12:19 AM   #10
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The pilot bearing is a standard 6201 bearing. You should be able to source them from most any bearing distributor at a decent price. Luckily we have machines here at work that use them too....so I have a supply onhand that has come in handy on more than one occasion.

Jay Storm
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Old 07-01-2006, 01:37 PM   #11
FuJi K
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Quote:
Originally Posted by mi_cistemz_loudr
I started getting clutch chatter a few months ago, and its getting progressivly worse. My 1.8 has 113k miles on it, so I thought now would be a good time to change the clutch, as well as maybe upgrade a bit for the little more power I am expecting. I don't have a 2.2 or a 2.5 pressure plate, and I dont think I'll be able to find one in time for this swap. This sounds like a bit of a mess, looks like I'll have to deal with the slippage and just update/upgrade the clutch and flywheel at the same time.

Thanks for all the info.
You can probably pick up a used 2.2L/2.5L flywheel from the 1st generation Impreza guys......like those who went with a light weight flywheel. Wel...right now I have a 2.5L flywheel in the garage....ahahha Then all you need is the 2.5L clutch and pressure plate.
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Old 07-05-2006, 07:50 PM   #12
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Quote:
Originally Posted by FuJi K
You can probably pick up a used 2.2L/2.5L flywheel from the 1st generation Impreza guys......like those who went with a light weight flywheel. Wel...right now I have a 2.5L flywheel in the garage....ahahha Then all you need is the 2.5L clutch and pressure plate.
You have pm. If I can get a 2.5 flywheel I will just stick with the used clutch and pressure plate that I have sitting in the basement because I'm out of funds for the time being.
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Old 07-05-2006, 11:48 PM   #13
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anyone know the part number(s) for the ej25 exedy clutch kit?
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Old 07-16-2006, 04:32 PM   #14
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So if I'm reading this right I can put a 2.5 flywheel on a 2.2. Which I am going to put a lightweight flywheel on mine from act and all I can find on ebay is for a 2.5. So should I get a 2.5 clutch or stick with the 2.2 clutch or are they the same?
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Old 07-16-2006, 05:55 PM   #15
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I just swapped the 2.2 in yesterday. I am using the 1.8 clutch with the 2.5 pressure plate on the 1.8 flywheel. The only difference between the 2.5 and 1.8 clutches that I could tell is that the 2.5 had 4 springs on it while the 1.8 had six. It's running great, however I noticed no difference between the current 2.5 pressure plate and the previous 1.8 one.
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