Alan Jeffery

It uses a 96mm bore with a 79mm crank. You could use an 81mm crank as well!
Plenty of options about for the adventurous. We did toy with building a destroked 257 block as well!

wrighty338

iTrader: (33)

is 96mm a lot to take a 2.0 to though? i thought they were 92mm to start with?

what displacement would you get with 81mm cranks? and would any other parts need to be different from the 2.1 kit?

how about 83mm crank, would displacement could be achieved with this? and again would you need to change any parts from a 2.1 kit?

Alan Jeffery

We haven't been there with this one, and haven't felt the need to bore a block that far. They say it's safe, who knows? on a CDB they could well be right. We can custom order rods and pistons, so I dare say we could accomodate most requests!

banny sti

iTrader: (68)

Use a EJ22T block and with an 83mm crank and 98mm pistons you will have a 2.5 engine or 2503.21 to be exact

Banny

TH3_5T1G

iTrader: (15)

Good god, just as i thought i had it all figured out, along comes a new stroker kit.

Alan, would a EJ22 stroked to 2.33 be worth the extra expense over the CDB EJ20 stroked to 2.29?

RA Dunk

yea same here!

What I want to know is...Why has nobody ever done this or nobody has ever mentioned it before?

Alan Jeffery

I'd say the issue might be a reluctance to bore an EJ20 block out that far.
Any volunteers out there? You ask for it, we'll build it!

Alan Jeffery

My view is the biggest gain is from the stroke, rather than the swept volume, it's why an EJ20 stroker is such a step forward.

SMA01 - black scoob

you could always build it and i will let u try it in my car for free alan.....

Alan Jeffery

Generous to a fault!

chrisdicko

iTrader: (21)

Would a S-CDB cope with a 2.3 Stroker?

What are the implications/problems which could arise from it?

Trawling the american ebay they are selling them http://cgi.ebay.com/ebaymotors/Brian...#ht_4314wt_939

Is it just the size of the crank/rods/pistons which will give the capacity?

Alan Jeffery

We were discussing that one. The issue with the Crower conversion is the 96mm bore, which takes it out more than usual. We need a guinea pig, fancy giving it a go? I'll cut you some slack on the price!

TH3_5T1G

iTrader: (15)

I'll be up for that offer Alan with my newly acquired EJ20 CDB

Alan Jeffery

In that case, just pop it in the post and we'll crack on it!

TH3_5T1G

iTrader: (15)

YHPM

mikey30

what cc size injectors do you guys run with the 2.1 stroker???
is 650cc too small with a 321t??

TH3_5T1G

iTrader: (15)

For a T it'll be a fairly high injector duty cycle but they should manage.

SMA01 - black scoob

depends how far you are going to push it with the car, if you are planning to up the power even more in future you would be better going something that will be capable of seeing the job right through...alan opted for a set of 1100cc injectors from roger clark for my build with perrin rails...seem really good

mikey30

is that on a 2.1 stroker engine mate???
what sort of power you running???

g7prs

iTrader: (5)

Mikey, Scotts running in the 600's

TH3_5T1G

iTrader: (15)

630ish isn't it?

SMA01 - black scoob

i wont complain about a couple of bhp out mate....627

uzi

alan yhpm

jd5217

627.4

Alan Jeffery

Now there goes a man who deserves a medal for conspicuous Pedantry.

SMA01 - black scoob

chrisdicko

iTrader: (21)

What's a STI8 S-CDB good for power wise?

And where do you get the figure from? Have there been many failures at say 600, so then you'd recommend 500 to be safe for example?

Just I've seen engines fail due to bearings, pistons melting......but never an actual block failure?

Alan Jeffery

Bottom line is, it's impossible to tell! My inclination is to feel that you'd be more likely to suffer a failure elsewhere in the engine if you just keep pushing it. We've never seen a block failure on any Impreza engine as it happens.
My view is that the much publicised block failures posted about aren't what they seem, in that the most likely event was a head gasket seal failure, followed by hydraulic lock splitting the block.
I wouldn't be worried about an S-CDB block at 500 bhp personally.
The ultimate has to be a closed deck of course, we have a number in stock.

chrisdicko

iTrader: (21)

Cheers for the reply.

So really when people say about limits, they are just guessing? And it just depends how far you dare push the block?

stevemoir

iTrader: (24)

alan i have a v8 STI with the S_CDB

i would like to enquire about your 2.1 stroker with a full CDB supplied by yourselves

how much would i be all in

steve