Rebuild 2.5?
26 November 2007, 08:20 PM
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Rebuild 2.5?
iv got a v4 sti ra the car startd to knock so im havein a rebuild i wondered if u lot could help
im afta a set of forged pistons, rods, crank and oil pump that are will be good enuf to hold 350bhp reliable.
A queston for the ppl that have had the 2.5 conversion, i will be doing more track days nxt year im not a massive fan of top speed more corners so is it worth haveng the 2.5?
im afta a set of forged pistons, rods, crank and oil pump that are will be good enuf to hold 350bhp reliable.
A queston for the ppl that have had the 2.5 conversion, i will be doing more track days nxt year im not a massive fan of top speed more corners so is it worth haveng the 2.5?
27 November 2007, 07:30 PM
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If you'are going for an engine out rebuild silly not to opt for the 2.5 It's a much strong engine, and able to handle more BHP more reliably than the 2.0 not that the standard 2.0 couldn't cope with 350bhp.
I've got 350 bhp with my 2.0l and it copes very well. But if it ever went bang, I'd go 2.5
I've got 350 bhp with my 2.0l and it copes very well. But if it ever went bang, I'd go 2.5
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27 November 2007, 07:42 PM
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400 is a bit dodgy due to the pistons! they are eutectic coated and have a very fine bore/piston tolerance so when producing more power they get too hot and nip up, better to put some drop in forged pistons if you want over 350 on a 2.5, there are loads on here that have done it! speak to one of the respected tuners for advice, RCMS for instance.
27 November 2007, 07:44 PM
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Indeed, SAVE cos it aint a cheap slope to get onto and it is a slippery one, once you start............................................. ..........................................bugger, the wifes left me etc etc
27 November 2007, 10:32 PM
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If you are going to use mainly on the road get the 2.5L
If trackdays are your thing get the 2.0L.
The 2.5L is much smoother, but you don't get such a feeling of acceleration.
The pull starts much lower down the rev scale and keeps on going.
27 November 2007, 11:57 PM
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an ej257 block would probably be cheaper than having yours rebuilt
if your staying at the 350 bhp mark then just get the standard lump
straight swap then . Mark at Lateral does very 'keen' prices on the block in question.
28 November 2007, 07:36 AM
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Have a word with Ivan, they do rebuilds, parts etc. JUst done a 2 litre swopped for a 2.5.
THeir Customer " Andy Pandy" is going for over 400 Brake in it.
Forester Subaru - Subaru Parts, Subaru Spares, Subaru Breakers
Good Luck with your Quest.
Regards
Alan maC
THeir Customer " Andy Pandy" is going for over 400 Brake in it.
Forester Subaru - Subaru Parts, Subaru Spares, Subaru Breakers
Good Luck with your Quest.
Regards
Alan maC
04 December 2007, 06:12 PM
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rite i have i have just brought a 2.5 close deck from a chap in brum he had it from flatfour he sold it as he brought it off hem had to wait 5months b4 the delivered it in the mean time he lost interest and sold the car.
so i guess iv now startd anew project, what sort of problems will i be looking to bump into?
so i guess iv now startd anew project, what sort of problems will i be looking to bump into?
05 December 2007, 10:09 AM
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it says close deck im not 100% on these engines (i was a ford man) but when i was on the fone to the garage that will b fitting it and explaind what it lookd like he thinks its a closed deck but isnt sure untill he sees it.
all i can say is have alook on the flat4 website to view the engine
all i can say is have alook on the flat4 website to view the engine
05 December 2007, 11:01 AM
#23
Seems a few folks are starting to offer 2.5 CDB
(see Engine Blocks - Flat4online.co.uk Subaru Impreza Mitsubishi Evolution EVO Walbro Fuel Pumps Injectors Intercoolers for an example)
Someone please correct me if I am wrong (as I am not at all certain about this), but I think these blocks are standard ODB, that have been closed with molten alloy.
If you have one of these, then cool, as it should be able to take a lot more punishment that the 2.5 ODB.
(see Engine Blocks - Flat4online.co.uk Subaru Impreza Mitsubishi Evolution EVO Walbro Fuel Pumps Injectors Intercoolers for an example)
Someone please correct me if I am wrong (as I am not at all certain about this), but I think these blocks are standard ODB, that have been closed with molten alloy.
If you have one of these, then cool, as it should be able to take a lot more punishment that the 2.5 ODB.
Last edited by STiFreak; 05 December 2007 at 11:03 AM. Reason: grammer
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