Which head gaskets on EJ22T with EJ25 SOHC heads?

Eric SS · 05-06-2002, 10:55 PM

Yeah yeah, I did a search and came up with some good stuff but not enough for my liking.

On my first EJ22T, I used the EJ22T gaskets. After 3,000 miles of 9-10psi I looked at the head gaskets and they looked perfect still.

I always prefer to use a head gasket that is made for the same size bore but have heard of a lot of people using EJ25 SOHC head gaskets on their EJ22T buildup with EJ25 heads. I am very hesitant to do that. I have a couple questions:

1) what is the compressed thickness of the MY00 EJ25 and 91-94 EJ22T headgaskets?

2) which do you run? any problems?

I need to know quick because I need to get these gaskets ordered up. The block came in today! woo-hoo! Thanks!

Eric

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Eric SS · 05-06-2002, 10:56 PM

oh yeah, and what are the part numbers for the two gaskets. Thanks

Eric

8Complex · 05-07-2002, 12:03 AM

I would stick with the EJ22T gaskets, personally. I wouldn't want to mess with the quench area.

BTW, why are you asking US motor build questions?

Eric SS · 05-07-2002, 12:17 AM

Quote:

Originally posted by 8Complex
I would stick with the EJ22T gaskets, personally. I wouldn't want to mess with the quench area.

BTW, why are you asking US motor build questions?

hehe. THat's why I stated that I hesitate to use a head gasket not made for a specific bore

. I would NEVER do that on a small block Chevy or any american engine that I know of. I never even comprehended the idea until I heard of people using the EJ25 head gaskets on the EJ22T. And honestly, I still loath the idea of having such a large area that is off on the sides of the bore where fuel could pool, hotspots could form, and numerous other things could go wrong.

But, I figured I'd let everyone else voice there opinion also to see if anyone could give me hard evidence of why I should go with a head gasket designed with a different engine (namely, a bigger bore).

Eric

edit: added some smilies

STiTuner · 05-07-2002, 12:52 AM

get custom copper gaskets made

unless they have ej22t copper gaskets in japland

Brad
wants a 22b

Eric SS · 05-07-2002, 01:32 PM

come on guys. I know you have some info or thoughts for me

And i would prefer not to use copper gaskets

Eric

adamsrs · 05-07-2002, 03:42 PM

I used SOHC EJ25 HEad Gaskets because that is what Mark Fitz Told em to use.
adamsrs

HndaTch627 · 05-08-2002, 03:30 AM

Quote:

Originally posted by Imprezinator
And i would prefer not to use copper gaskets

Eric

yes eric i 100% agree...and there is a REASON for this...copper gaskets LEAK...engine builders don't use them for a reason and neither do i...done 2, both leaked...replaced w/ steel and no problems since. Eric i would stick with the EJ22T gaskets...i'll see if i can get ya a part number sometime tommorrow. Glad to see you are still around and the car is still in your hands(for now)...i'll PM ya my cell number so you can get ahold of me, or PM me yours...whichever.

jeremy

adamsrs · 05-08-2002, 08:13 PM

Jeremy- What is the advantage of using the EJ22 Gasket? I was told to use the EJ25 one.... was this a BAD idea? Thanks!
adamsrs

8Complex · 05-08-2002, 08:32 PM

The diameter or the cylinder bore on the EJ25 is much larger then the EJ22, so there will be much more room between the cylinder wall and the head where there used to be a gasket. That can cause hot spots, fuel pooling, etc like Eric had said in his 3rd post up above.

HOK · 05-08-2002, 10:52 PM

well i use the EJ25 gaskets... and i've been running the combination for more than a year and a half.... i agree with the theories tho... but everyone i talked to also runs the EJ25 gaskets... i don't know which is best... but probably getting STI heads is the best hehehe

HndaTch627 · 05-09-2002, 02:40 AM

Quote:

Originally posted by 8Complex
The diameter or the cylinder bore on the EJ25 is much larger then the EJ22, so there will be much more room between the cylinder wall and the head where there used to be a gasket. That can cause hot spots, fuel pooling, etc like Eric had said in his 3rd post up above.

exactly...but IIRC the EJ22T gaskets are some weird material where as the EJ25 gaskets are 3 layer steel.

jeremy

Eric SS · 05-09-2002, 03:27 AM

IIRC, the EJ25 gaskets are graphite composite but it's been a while since I've seen one. The EJ22T are the older style standard gaskets with raised silicon beads. Whatever the case may be, I'm getting the EJ22T gaskets because I no matter how hard I try, I can;t make myself get a gasket that is for a larger bore engine.

Eric

HndaTch627 · 05-09-2002, 03:42 AM

Quote:

Originally posted by Imprezinator
IIRC, the EJ25 gaskets are graphite composite but it's been a while since I've seen one. The EJ22T are the older style standard gaskets with raised silicon beads. Whatever the case may be, I'm getting the EJ22T gaskets because I no matter how hard I try, I can;t make myself get a gasket that is for a larger bore engine.

Eric

good call man...i would do the same.

jeremy

HOK · 05-09-2002, 05:10 AM

then why ask at all?

8Complex · 05-09-2002, 09:10 AM

Why don't you go to the dealership and take a look at a modern 2.2L gasket? I'm willing to bet that last years' L's had updated 2.2L gaskets, maybe even 3-layer like the current 2.5L ones.

HndaTch627 · 05-09-2002, 11:40 AM

Quote:

Originally posted by 8Complex
Why don't you go to the dealership and take a look at a modern 2.2L gasket? I'm willing to bet that last years' L's had updated 2.2L gaskets, maybe even 3-layer like the current 2.5L ones.

hmmm...good call

Eric SS · 05-09-2002, 01:32 PM

I asked because I wanted to see if anyone could pursuade me but I realized i can;t be pursuaded.

Nick: IIRC, the 2.2L head is different than the EJ22T head. I saw it on someones website and some other thread. Besides, I didn;t have any problems with the old gasket and I know many people with a stock Legacy EJ22T with well over 100,000 miles on it and no head gasket problems.

Eric

8Complex · 05-09-2002, 02:12 PM

You sure about that? I know that the older EJ22's were supposed to be different, but I would think that since you have SOHC RS heads on it, they'd match up just fine. I know that open-deck motors rely on the coolant passages in the head (since there is just jackets in the block), so I would think as long as the EJ22's in the L's used SOHC heads (and Subaru liked using parts for multiple applications) that they'd mate fine. If I were you, I'd take a SOHC RS gasket and compare it to the EJ22 gasket from the L.

Then after all that, you have to decide which you'd rather use... the new EJ22 gasket, or the old EJ22 gasket.

Eric SS · 05-09-2002, 02:58 PM

I just ordered the old ones from Trish at Suparuparts.com so I guess I'm stuck

. Thanks guys

Eric

HndaTch627 · 05-11-2002, 03:13 AM

Quote:

Originally posted by Imprezinator
I just ordered the old ones from Trish at Suparuparts.com so I guess I'm stuck . Thanks guys

Eric

haha....you guys crack me up...Nick good thinking...we'll have to look into this.

jeremy

Eric SS · 05-11-2002, 03:17 AM

I received the gaslets today (EJ22T). I was wrong about their construction. Honestly, I don;t know what they are. hehe. They are like an extremly dense fiber gasket of some sort. not sure what though. No raised silicon beads around the water jackets which is fine. but, the buildup has begun again which is all I care about

Eric

HndaTch627 · 05-11-2002, 11:08 AM

Quote:

Originally posted by Imprezinator
I received the gaslets today (EJ22T). I was wrong about their construction. Honestly, I don;t know what they are. hehe. They are like an extremly dense fiber gasket of some sort. not sure what though. No raised silicon beads around the water jackets which is fine. but, the buildup has begun again which is all I care about

Eric

can we trya nd do it right this time...hehe j/p....can't wait to hear this thing run again eric.

jeremy

05-06-2002, 10:55 PM	#1
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	Which head gaskets on EJ22T with EJ25 SOHC heads? Yeah yeah, I did a search and came up with some good stuff but not enough for my liking. On my first EJ22T, I used the EJ22T gaskets. After 3,000 miles of 9-10psi I looked at the head gaskets and they looked perfect still. I always prefer to use a head gasket that is made for the same size bore but have heard of a lot of people using EJ25 SOHC head gaskets on their EJ22T buildup with EJ25 heads. I am very hesitant to do that. I have a couple questions: 1) what is the compressed thickness of the MY00 EJ25 and 91-94 EJ22T headgaskets? 2) which do you run? any problems? I need to know quick because I need to get these gaskets ordered up. The block came in today! woo-hoo! Thanks! Eric * Registered users of the site do not see these ads.

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05-06-2002, 10:56 PM	#2
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	oh yeah, and what are the part numbers for the two gaskets. Thanks Eric

05-07-2002, 12:03 AM	#3
8Complex Moderator Member#: 922 Join Date: Feb 2000 Chapter/Region: MWSOC Location: Schaumburg, IL Vehicle: 04 FXT Red	I would stick with the EJ22T gaskets, personally. I wouldn't want to mess with the quench area. BTW, why are you asking US motor build questions?

05-07-2002, 12:52 AM	#5
STiTuner Scooby Specialist Member#: 5778 Join Date: Apr 2001 Chapter/Region: South East Vehicle: 09 135i Jet Black	get custom copper gaskets made unless they have ej22t copper gaskets in japland Brad wants a 22b

05-07-2002, 01:32 PM	#6
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	come on guys. I know you have some info or thoughts for me And i would prefer not to use copper gaskets Eric

05-07-2002, 03:42 PM	#7
adamsrs Scooby Specialist Member#: 3768 Join Date: Jan 2001 Location: Seattle, WA	I used SOHC EJ25 HEad Gaskets because that is what Mark Fitz Told em to use. adamsrs

05-08-2002, 08:13 PM	#9
adamsrs Scooby Specialist Member#: 3768 Join Date: Jan 2001 Location: Seattle, WA	Jeremy- What is the advantage of using the EJ22 Gasket? I was told to use the EJ25 one.... was this a BAD idea? Thanks! adamsrs

05-08-2002, 08:32 PM	#10
8Complex Moderator Member#: 922 Join Date: Feb 2000 Chapter/Region: MWSOC Location: Schaumburg, IL Vehicle: 04 FXT Red	The diameter or the cylinder bore on the EJ25 is much larger then the EJ22, so there will be much more room between the cylinder wall and the head where there used to be a gasket. That can cause hot spots, fuel pooling, etc like Eric had said in his 3rd post up above.

05-08-2002, 10:52 PM	#11
HOK Scooby Specialist Member#: 447 Join Date: Oct 1999 Location: Oh Canada Vehicle: 1999 EJ22T222B&EVO Are we racing yet?	well i use the EJ25 gaskets... and i've been running the combination for more than a year and a half.... i agree with the theories tho... but everyone i talked to also runs the EJ25 gaskets... i don't know which is best... but probably getting STI heads is the best hehehe

05-09-2002, 03:27 AM	#13
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	IIRC, the EJ25 gaskets are graphite composite but it's been a while since I've seen one. The EJ22T are the older style standard gaskets with raised silicon beads. Whatever the case may be, I'm getting the EJ22T gaskets because I no matter how hard I try, I can;t make myself get a gasket that is for a larger bore engine. Eric

05-09-2002, 05:10 AM	#15
HOK Scooby Specialist Member#: 447 Join Date: Oct 1999 Location: Oh Canada Vehicle: 1999 EJ22T222B&EVO Are we racing yet?	then why ask at all?

05-09-2002, 09:10 AM	#16
8Complex Moderator Member#: 922 Join Date: Feb 2000 Chapter/Region: MWSOC Location: Schaumburg, IL Vehicle: 04 FXT Red	Why don't you go to the dealership and take a look at a modern 2.2L gasket? I'm willing to bet that last years' L's had updated 2.2L gaskets, maybe even 3-layer like the current 2.5L ones.

05-09-2002, 01:32 PM	#18
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	I asked because I wanted to see if anyone could pursuade me but I realized i can;t be pursuaded. Nick: IIRC, the 2.2L head is different than the EJ22T head. I saw it on someones website and some other thread. Besides, I didn;t have any problems with the old gasket and I know many people with a stock Legacy EJ22T with well over 100,000 miles on it and no head gasket problems. Eric

05-09-2002, 02:12 PM	#19
8Complex Moderator Member#: 922 Join Date: Feb 2000 Chapter/Region: MWSOC Location: Schaumburg, IL Vehicle: 04 FXT Red	You sure about that? I know that the older EJ22's were supposed to be different, but I would think that since you have SOHC RS heads on it, they'd match up just fine. I know that open-deck motors rely on the coolant passages in the head (since there is just jackets in the block), so I would think as long as the EJ22's in the L's used SOHC heads (and Subaru liked using parts for multiple applications) that they'd mate fine. If I were you, I'd take a SOHC RS gasket and compare it to the EJ22 gasket from the L. Then after all that, you have to decide which you'd rather use... the new EJ22 gasket, or the old EJ22 gasket.

05-09-2002, 02:58 PM	#20
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	I just ordered the old ones from Trish at Suparuparts.com so I guess I'm stuck . Thanks guys Eric

05-11-2002, 03:17 AM	#22
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	I received the gaslets today (EJ22T). I was wrong about their construction. Honestly, I don;t know what they are. hehe. They are like an extremly dense fiber gasket of some sort. not sure what though. No raised silicon beads around the water jackets which is fine. but, the buildup has begun again which is all I care about Eric