Liamsim2

Hi, I am currently putting a forged 2.2 stroker engine in my sti blob. Would I need to get a larger turbo and injection for a remap or will I be okay with the standard sti ones? I plan on getting larger turbo and injectors at some point in the future however I don’t really have the money right now ahah.
tia.
liam

NOSSY_89

Thats fine mate, when you upgrade those bits get a map tweak done.

scooobydont

Hopefully should hear and see that going around when it's done, your very local.

Liamsim2

Aye hopefully the car is done soon. Planning on going to some meets once it’s running. Depending on what’s happening with COVID lol

johnlogie

iTrader: (4)

Who’s mapping the car Liam?

NOSSY_89

What are you doing to get 2.2 mate.

Liamsim2

ej25 nitrated crank, Manley rods, mahle pistons.

Liamsim2

was going to try and get it into unit 8 once the car is back together.

NOSSY_89

I know the ej257 crank is used to get a 2.1 build. Didn't realise it was used in a 2.2. Assuming the rods are different

MOTORS S GT

iTrader: (2)

No, 2.2 is a 2.0 crank 75mm stroke, 97mm bore, std 130.5mm rods, 2.1 is a 2.5 crank 79mm stroke, 92mm bore, std 130.5mm rods.

Liamsim2

NOSSY_89

No I am confused lol.

Where is that screenshot from mate. Motors is a respected engine builder who knows his stuff. So there is a conflict of information here. Not trying to start a fight or anything just trying to expand my knowledge. This brings me onto my next question, why isn't the 2.2 talked about more if you're using an EJ20. It seems the 2.1 was really popular.

Henrik

iTrader: (5)

It sounds like it's a 2.1. some builders refer to them as 2.2s for some reason. I think at max bore and 79mm stroke you end up maybe close to 2150cc, but this sounds like a normal "2.1"

There is an ej22 block, which ends up as a 2.3 when mated to the 79mm (ej257) crank, and 2.2 with its standard 75mm crank.

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spindle121

Hi All if Paul (motors) states that take it as gospel no better man. ,,,,,,

MOTORS S GT

iTrader: (2)

That would make it 2.35 not 2.2.if based on a 2.2 block casings,

NOSSY_89

Paul, slightly off topic but can you get 2.2 from a 2.0ltr block. Not the 2.123 that a lot of kits do now.

Price of EJ22 blocks is insane, £2,500 for a bare block with no heads. No thank you at that price lol.

MOTORS S GT

iTrader: (2)

As far as I am aware you cannot get 97mm bore out of the 2.0 92mm block reliably.

Henrik

iTrader: (5)

Could you reliably sleeve an EJ257 down to a 97mm bore? Something like an open deck block (with cdb inserts), but a really thick sleeve instead (top hat?)

My position (and I'm sure others are thinking similar) is that I would like bigger volume, but:
a) I don't want to pay 2500 for an old ej22 with its inferior gearbox bolt pattern etc.
b) I'm worried about the thin cylinder walls on the ej257 (I simply do not trust them, CDB or not).

MOTORS S GT

iTrader: (2)

Don't think you could sleeve reliably sleeve 99.5mm to 97 without going bigger to start with, Darton liners would be better, saying that Darton liners in Subaru blocks is another world of potential pain.

I have not seen any EJ22 blocks fetching £2.5k, I would want a X ray of it included in the price, as they crack badly internally with porosity problems, 14mm converting does not help in that area either.

NOSSY_89

Sorry for completely derailing the tread mate.





Whats the issue with the bolt pattern. Thought they were all the same. Looks like the EJ22 isn't all its made out to be.

Just seems to be what RCM are charging for a used block and the ebay sellers are pricing it around the same amount. Can you still get these for any potential purchasers or would you suggest a different route.

matt-c

iTrader: (5)

EJ22 feature just 4 bolts rather than 6? to connect block to gearbox as more recent blocks have.
With very high power application this can be an issue IIRW.

NOSSY_89

Thanks

LewisScoob

iTrader: (5)

I'l add to the confusion and ask if its a stroked EJ22 making it a 2.33 or 2.35?

matt-c

iTrader: (5)

Worth remembering RCM themselves use 2.0 for the gobstoppers.

Henrik

iTrader: (5)

They are both based on the ej22 block with the ej257 (79mm) crank. The volume difference comes from the different bore.

Basically, do you use standard size pistons (unlikely, as the blocks are old and would need to be bored to be round again), or do you go up to 1st, 2nd oversize pistons etc.

A 2.33 (first overdimension?) can be rebuilt more times than a 2.35 (I would have thought).

LewisScoob

iTrader: (5)

Yeah, i knew that I was just musing as to whether thats what the OP had built for his engine.

stockcar

have sleeved various engines to differing capacity with custom liners over the years, most commonly the likes of CDB EJ20's taken out to 2.2 or 2.5 capacity...........
current project is to sleeve down an later block to give an "8 bolt" 2.2..............

just for reference a stroked 2.0 is nominally 2123cc at 92.5mm bore and 2146cc at 93mm bore...........never a "2.2"........
and the EJ22 when stroked ends up around 2335cc at 97mm, 2359cc at 97.5mm and 2383cc at 98mm

NOSSY_89

2 brilliant builders sharing some very insightful information

Alyn could you give a bit more information on the 8 bolt version you are working on, perhaps a new topic as this has derailed more than enough lol. I really would like to expand my knowledge on the subject. Thanks.

stockcar

when they introduced the TY754 for the MY99 cars they simply changed the bellhousing casting to accommodate 4x extra fixings making it far more rigid
this also coincided with the change to the rear thrust crank which combined to offer better reliability of both engines and gearboxes........