so ive been to thwaites today and had a good chat with mark (he is such a nice guy to talk with-doesnt talk bull-**** and doesnt try and sell you stuff you dont need)

selling on my bottom end and starting afresh is the best move is what we both agreed on

he drew up a quick spec of what i could possibly have

new ej25 block from subaru
closed deck conversion
14mm head stud conversion
79mm new crankshaft
acl bearing set
cosworth pistons
manley tuff-stuff conrods
RCM super stud 14mm set inc dowels
rcm stopper head gaskets
new oil pick up pipe and sump
RCM baffle plate
new seal and gasket set
valves re-seated in the heads and refaced

he said an engine like that will be able to take around 550bhp-600bhp
he explained that it was boost pressure that will kill an engine aswell so looking for a turbo that i could whack 2 bar through would probably end in tears.
its over spec'd for my needs but i would sooner have it that way leaving room for more should i ever need it. he also said that i will need 1000cc injectors,new fuel pump and a set of rcm headers.
he recommended a precision turbo for 450bhp-500bhp, we talked about having a twisted set up aswell but for my needs its not worth the huge outlay, there are plenty of of standard fit turbos that will get me where i want to be.

he explained that it was boost pressure that will kill an engine aswell so looking for a turbo that i could whack 2 bar through would probably end in tears.
there was also an option for a lower spec block that should take 450ish bhp if i couldnt afford the 1st option but not alot of scope for more should i ever need it.

gonna get my thinking cap on now and look at my funds.if i could save money on the headers/injectors and maybe turbo by buying 2nd hand or from the states then that would allow me more funds for the main build.

exciting stuff.........

 

Could you not save a bit of cash by using your block and crank?

 

 

Depends what clutch he's running. I'm running a pink box at 553/504 . Dont launch but do drive it hard .

 

more to the point where were you yesterday mate........tut tut

 

will PM later

 

price difference is alot as there is no point building a 2.35 for say 450 ish BHP as the cost is too great compared to the 2.5. The block alone would be around £2k compared to 1k for the 2.5 block.

Yes going with either an ap racing clutch or competition clutch

 

from what I can gather there is more machine work involved in the ej22 block and also I would need different heads I believe.

Regardless of how you dress it down a 2.35 is more expensive than a 2.5 and I cant stretch to that much.

 

Closed Deck EJ25 Block
14/12 RCM Headstuds
V8 AVCS Heads
RCM Head Gaskets
Nitrated EJ257 Crank
WMS Rods
100mm JE Pistons
ACL Race Bearings
11mm Oil Pump

 

hmmm I thought yours was a 2.1 stroker mate

 

It used to be, that was the previous engine

 

Which is better engine and why?

 

ah i didnt know, you need to edit your build thread title then buddy lol

is this the engine you had an issue with in the bores?

 

so i have spoken with alan @ engine tuner today as i wanted to get a quote from somebody else to rebuild my current engine.

he said there is no reason that my current block couldnt be rebuilt BUT it is possible that it could be no good and its a risk that i can either choose to take or not.
if my block is ok i could save over £1k and re-using my crank/pistons would save me another £1k.
just a quick hone and re-ring the pistons
re-seat the valves
new head gaskets
new acl bearings
new timing kit/water pump
new oil pump - he recommended a 12mm oil pump
he also said that 14mm headstuds were not needed around 450bhp,he said about arp 260,000 11mm or arp extreme (i think) head-studs would be more than fine

he will email the quote over to me next week.

he is also quoting on a precision turbo capable of 450bhp and a link g4+ ecu. i found him very easy to talk to and at no point was he trying to sell me stuff i dont need, only down side is he is fekking miles away from me.

i will update when i have heard back from him

 

Out of interest,What can a 2.35 build do that a decent built 2.5 can't?

 

i think the 2.35 is the holy grail of subaru engines,strong block design so can make handle serious power.

 

just had a response from engine tuner

Full Subaru gasket kit
RCM head gaskets
RCM head stud kit
ACL Race bearings
Manley H beam rods
12mm oil pump
Dayco cam belt

the pistons may need re-ringing and a quick hone of the bores aswell might be needed

 

So the big question is do I rebuild my current block and re-use my crank and pistons which would save me a **** load OR do I sell my bottom end and start with new everything........

 

I'd stick with what you've got if there's nothing wrong with them.
No use spending for the sake of it.

 

i just dont want any regrets, i want to make sure i give the engine the best chance possible of reaching my target power

 

Don't know how to edit the title

Yeah the first version of the 2.5 is the one that got the water damage somehow. It's fine now after a rebore and new pistons

 

The 2.5 is better on the road, less lag, more torque, pulls better off boost but with a big turbo on it still revs out just fine .

 

lol water damage.............as ****ing if.

whats the max you could run on your block buddy? 500bhp perhaps?

 

500 is about what I'd want to run it at safely. Not entirely sure what it would actually take though, the block is essentially the weakest thing. I should think 600 would be ok.

 

does yours feel laggy at all @ 470bhp?

 

cant really really help it being 6ft 8.

Have you not got many cars to scrub today fawor?

 

Whats the difference is price from selling your bottom end complete to buying new block, pistons, crank?

plus whats mileage on your block, crank?

new will always be better.

 

477

No not at all, spools very fast and pulls like mad .

 

whats going on with this thread? it says it is 3 pages long but when i click on the 3rd page it wont open

 

right here goes......

the engine is 2 years old (built in august 2016 by scoobyclinic) it has covered just over 11k. the block case itself i have no idea as it was one they had on the shelf already converted to closed deck. the only thing that was re-used were the std rods and arp rod bolts and the 11mm head studs from the previous engine.

the price difference is quite alot

sell my bottom end maybe get £1800--£2k for it IF somebody wants it

-new ej25 block cases from subaru £1090+ vat
-new crank £450+ vat
-new mahle piston 2618 £550+ vat
-closed deck conversion £500+ vat
-new sump and pick-up pipe £200+ vat
-acl bearings £130+ vat
-machine work like hone etc £150+ vat

so around £4k with vat.