linering vs cdb

[Tidgy]

My old 2.5 was a closed deck converted block. my eventual plan is to go down the engine build route again but its got me thinking. Initial thinking is heading down the CDB route again, but the other option is replace the liners. That brings on the questions of,

Rough cost
Potential downsides
Worth doing it over CDB

anyone got any info/experiences?

[stevieturbo]

Factory CDB works. Aftermarket CDB inserts seem to hold well.

But what you need or whether you need it...how long is a piece of string ?

[Tidgy]

Im prob gonna be aiming for around 550 ish mainly for road but want it to be reliable for 40k miles at least.

[Tidgy]

double post

[stevieturbo]

I would not be replacing liners unless there was a specific need or reason for doing so.

And I dont see you mention any that would justify the risk.

[TimH]

My 2.5 scdb ran 500bhp for 50k miles. Maybe I was just lucky, but it's still going strong with the new owner 2 years later.

If I'd kept it I would have rebuilt and gone for the cdb inserts and aimed for 600bhp without hesitation.

YMMV

[Fai17]

Is your said block linered?
If there is nothing wrong with it I don’t see the point of changing it.

Unless you was going to rebuild one then why not try the ej22t block.

[stockcar]

have repaired plenty of blocks with replacement liners and we also have custom HD liners available dependant on power target / use

[Tidgy]

current engine is a stock 2006 sti limited, although not 100% sure exactly what that is, im assuming same as a normal hawk but with a different engine code.

[Fai17]

Ahh I see where you are coming from now.
Basically you have an oem 2.5 hawkeye and want to rebuild it at a later stage.

VFM then when you take the car off the road obviously before it goes bang, send you engine (long or short) to Alyn and get him to do a cdb conversion on it and rebuild the block with rods and pistons. Keep it to one Engine builder so it’s passed about to here and there. At least that’s what I’d like to do.

[Tidgy]

short version aye, scoobyclinic will be building/fitting etc it what ever route i go

[stockcar]

i certainly wouldn't see a liner install as an alternative to a CDB on an EJ25 but as an extra safeguard depending on the power target............
std liners seem to cope with 600 or so

we can / do offer both and have a "repair" type level as well as HD Ductile Iron custom options for extreme use

[Tidgy]

thanks alyn, sounds like cdb would be sufficient then.