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Old 08-10-2008, 11:08 PM   #1
vanillajuice
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Default where to get 2.8 litre...

so ive seen some people running 2.8 litre engines....is that something that could be straight bought? or is that something custom made by a machine shop?
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Old 08-10-2008, 11:37 PM   #2
MartinSTi05
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I know Crawford Performance used to sell them, but I am not currently seeing them on their website. I believe they ran an 84mm stroke crank, and a 102mm bore to reach a 2.8L displacement. It would by your definition be a "custom machine shop" engine. You would need to source an 84mm crank, custom pistons (with lower compression height), and have the block sleeved to facilitate a 102mm bore.
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Old 08-11-2008, 02:03 AM   #3
vanillajuice
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ya crawford is what i saw a while back...but like u said...not anymore. ya sleeves i know are a must tho
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Old 08-11-2008, 06:13 AM   #4
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I don't know of anyone selling them now, the biggest I have seen lately is a 2.75L.
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Old 08-11-2008, 10:42 AM   #5
mick_the_ginge
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I have a spare 0.3L in my garage, you can have that if you like. Just add it to a standard 2.5L and hey presto you have a 2.8L
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Old 08-11-2008, 03:22 PM   #6
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can I ask why you want a 2.8L in particular?
what are you going to use it for?
Just curious...


Mick, I like your answer
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Old 08-11-2008, 08:48 PM   #7
vanillajuice
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^haha so do i.....why a 2.8? why not? no reason in particular. just figured itd be something a bit different, with a bit more torque and a bit less spool time.
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Old 08-11-2008, 10:06 PM   #8
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Magnus Motorport sell a 2.8L wrx stroker kit for $4375.00 USD - which isn't too expensive. But you'll still need to pay the block prep/machining etc on top.

I'd expect at least $10K to get just the bottom end done and another $5k for heads that would do it justice. Then add that much ($15K) again for turbo, intercooler and other supporting parts.

I doubt you'd have much change from $50K just for the 2.8L engine build and its supporting parts - but you would definitely have one killer package

If you seriously want to go down this road, speak with a reputable Subaru/WRX engine builder/tuner - oh and your bank :P
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Old 08-11-2008, 10:23 PM   #9
Sinister redlines
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Ah before you pay that much look at the BC stroker kit 2.71L. I have one but if you where to ask me I wouldnt do it again. You can build a long rod, big bore, short stroke for far less and probably make same if not more power...
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Old 08-11-2008, 10:27 PM   #10
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H6 if u want big capacity.. bigger than 2.5 i.e 2.8 and the stroke becomes too square..
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Old 08-11-2008, 11:09 PM   #11
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Quote:
Originally Posted by tino View Post
H6 if u want big capacity.. bigger than 2.5 i.e 2.8 and the stroke becomes too square..
I think you meant stroke becomes too long, making the rod ratio really short (which has perks and trade offs)...

nothing wrong witha square or even under square motors...once again more pro's and con's...
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Old 08-11-2008, 11:41 PM   #12
Sinister redlines
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square engines with long rods is a great combination however not very feasable in a subie. Not impossible but just to give you a hint a 86mm by 86mm is a 2L, and a 86mm stroke is GIGANTIC for a subie.. Even my 2.7L uses a 83mm stroke and like mentioned above a 2.8 magnuson uses a 84mm. These are considered pushing the envolope for stroke (again it is possible to go more but the deck height just doesnt allow for much of a rod length.).
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Old 08-12-2008, 01:01 AM   #13
vanillajuice
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hmmm....looks like i may just end up getting a 2.7 litre "out of the box"
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Old 08-12-2008, 01:20 AM   #14
Sinister redlines
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I wouldnt... Build a big bore, short stroke 2.5... just so happens a 2.0 crank and a sleeved 102mm bore = 2.5L You will get a better rod ratio and better revs..
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Old 08-12-2008, 01:39 AM   #15
vanillajuice
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what ill prolly just end up doing is going with an axis signature series 2.5litre sleeved block to start....just keep it simple i spose
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Old 08-12-2008, 07:13 AM   #16
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Quote:
Originally Posted by Sinister redlines View Post
square engines with long rods is a great combination however not very feasable in a subie. Not impossible but just to give you a hint a 86mm by 86mm is a 2L, and a 86mm stroke is GIGANTIC for a subie..
[sarcasm] thanks, I didn't know [/sarcasm]

Quote:
Originally Posted by Sinister redlines View Post
I wouldnt... Build a big bore, short stroke 2.5... just so happens a 2.0 crank and a sleeved 102mm bore = 2.5L You will get a better rod ratio and better revs..
There is actually one combo I would recommend over the one you list....the EJ20 crank would be a simple way but there is one that will yield a nicer rod ratio for most people and more displacement too
Also 102mm bore isn't bad but doesn't have the best ring selection though it is 4.040"...also there is a similar size that has better flow discharge coefficients
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Old 08-12-2008, 08:59 AM   #17
tino
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Quote:
Originally Posted by Homemade WRX View Post
I think you meant stroke becomes too long, making the rod ratio really short (which has perks and trade offs)...

nothing wrong witha square or even under square motors...once again more pro's and con's...

hahaha yeah thats what i meant.. oopsss either way its not a good idea on a suby engine...
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Old 08-12-2008, 09:46 PM   #18
Sinister redlines
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Quote:
Originally Posted by Homemade WRX View Post
[sarcasm] thanks, I didn't know [/sarcasm]


There is actually one combo I would recommend over the one you list....the EJ20 crank would be a simple way but there is one that will yield a nicer rod ratio for most people and more displacement too
Also 102mm bore isn't bad but doesn't have the best ring selection though it is 4.040"...also there is a similar size that has better flow discharge coefficients
Okay so what is it? I know you have been playing with it so fill us in .

And I know you know it was meant for everyone else
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