When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I've seen forged kits for around £1500 then add gaskets,oil pump,belt kit etc.... so £3k ish
Then the blockwork will take it to around 4k,As tidgy says,also depends on your block condition,plus any head work you might want doing.
500bhp+
Last edited by ossett2k2; 18 March 2018 at 01:45 PM.
Wisdom would say have you considered sourcing a 2.2 Cdb and spending money on that. The 2.5 heads etc fit nice plus use the 2.5 crank for 2.35 lt.
TBH a far superior engine. Don’t waste your hard earned cash with a 2.5 with inserts or liners. Id even choose a 2.1 over the 2.5 but your heads don’t fit.
NB. I spent a lot of money on a ‘built’ 2.5 that lasted 42,000 before chewing a bearing and destroying the engine. They really are Crap design/ blocks that really should be kept to 400bhp max ...
Wisdom would say have you considered sourcing a 2.2 Cdb and spending money on that. The 2.5 heads etc fit nice plus use the 2.5 crank for 2.35 lt.
TBH a far superior engine. Don’t waste your hard earned cash with a 2.5 with inserts or liners. Id even choose a 2.1 over the 2.5 but your heads don’t fit.
NB. I spent a lot of money on a ‘built’ 2.5 that lasted 42,000 before chewing a bearing and destroying the engine. They really are Crap design/ blocks that really should be kept to 400bhp max ...
plenty of rebuilt 2.5's running mid 400's and over 500 that havn't had issues.
plenty of rebuilt 2.5's running mid 400's and over 500 that havn't had issues.
But... from what I read the OP here is on the beginning of a slippery slope into an ongoing engine build plus mods to follow on (as we all have done).
In hindsight I wish I’d put my money into a 2.35 from the off - a far wiser investment into a far superior engine. But was foolishly tempted by the claims of many to make the 2.5 ‘safe & secure’ upto 500bhp. I wonder how many have run another 40-50,000 miles trouble free ?
Mark @ Lateral hit the nail firmly on the head when he said (something akin) 2.5 - spend a little & call 400 the safe limit. If you want over 400 invest in something better ie 2.35 and use your 2.5 bits. Really WISE advice looking back.
NB. Not a 2.5 hater at all. Just now know it wasn’t the best route considering all the money spent.
Selah.
Last edited by Apostle; 20 March 2018 at 10:00 AM.
Serious question here:
Which would be the stronger block,a 2.5 which has been full closed decked or a 2.2 cdb which has been bored out to 2.35?
I was thinking the 2.5
Oh and just to throw another option in there,how about a 2.5 made into a 2.35?
Last edited by ossett2k2; 20 March 2018 at 10:17 AM.
The 2.2 block will be much stronger due to actually having some bore wall thickness, compared to the wafer thin 2.5.
A 2.5 block de stroked to 2.35, is a backward step as your are keeping the weakest link, you may as well keep it 2.5 for the extra torque, it will be no weaker for it.
But... from what I read the OP here is on the beginning of a slippery slope into an ongoing engine build plus mods to follow on (as we all have done).
In hindsight I wish I’d put my money into a 2.35 from the off - a far wiser investment into a far superior engine. But was foolishly tempted by the claims of many to make the 2.5 ‘safe & secure’ upto 500bhp. I wonder how many have run another 40-50,000 miles trouble free ?
Mark @ Lateral hit the nail firmly on the head when he said (something akin) 2.5 - spend a little & call 400 the safe limit. If you want over 400 invest in something better ie 2.35 and use your 2.5 bits. Really WISE advice looking back.
NB. Not a 2.5 hater at all. Just now know it wasn’t the best route considering all the money spent.
Selah.
I plan on running something like sc42 on it
I have been down the route of chasing numbers on my 2litre ones running
Mdx321t trying to get 450bhp wasted the car seems laggy till 4300rpm
The 2.2 block will be much stronger due to actually having some bore wall thickness, compared to the wafer thin 2.5.
A 2.5 block de stroked to 2.35, is a backward step as your are keeping the weakest link, you may as well keep it 2.5 for the extra torque, it will be no weaker for it.
I don't want to drift too off topic but I know the ej207 scdb comes in standard or thick wall variant,I'm guessing the ej257 doesn't come in both?
Would a thick wall 207 be a better option for 2.1 stroker if cdb'd and is it possible to stroke to 2.35?
The 2.0 thick wall block only has more material support around the liner, the liner thickness is the same as any 2.0, I think you would struggle to stroke a 2.0 92mm bore to 2.35.
But... from what I read the OP here is on the beginning of a slippery slope into an ongoing engine build plus mods to follow on (as we all have done).
In hindsight I wish I’d put my money into a 2.35 from the off - a far wiser investment into a far superior engine. But was foolishly tempted by the claims of many to make the 2.5 ‘safe & secure’ upto 500bhp. I wonder how many have run another 40-50,000 miles trouble free ?
Mark @ Lateral hit the nail firmly on the head when he said (something akin) 2.5 - spend a little & call 400 the safe limit. If you want over 400 invest in something better ie 2.35 and use your 2.5 bits. Really WISE advice looking back.
NB. Not a 2.5 hater at all. Just now know it wasn’t the best route considering all the money spent.
Selah.
How many 2.35's with over 50k are there out there? not many i would bet.
that said how many rebuilt subaru engines of any size that get tuned to over 500 are out there with over 50k on them?
The 2.0 thick wall block only has more material support around the liner, the liner thickness is the same as any 2.0, I think you would struggle to stroke a 2.0 92mm bore to 2.35.
Cheers,clears that up,I thought the liner was the 'thick in the thick wall version.
So both variants of the ej207 would be equally as strong with cdb inserts and stroked to 2.1?
Paul Finch currently has available “forged 2.5, & a big spec 2.35 short motor, with Arrow crank, Carrillo rods, Omega pistons etc” as I asked last night.
give andy willimas a ring down in north wales , really nice guy with lots of advice ..
all he does is build Scooby engines 07917 204738 tell hi rich from fflat4 gave you his number
Paul Finch currently has available “forged 2.5, & a big spec 2.35 short motor, with Arrow crank, Carrillo rods, Omega pistons etc” as I asked last night.
The 2.35 short engine is £8250. I didn’t enquire about the 2.5 so I can’t comment. A 2.1 with a good donor engine to 400bhp was coming in around £3500, can double it if your after 450+bhp. Obviously these are not fixed prices and was discussed privately so really for anything concrete you need approach them. But it gives you a steer I guess.
What’s that coming in at Zippy? Also what BHP you looking for? I know you previously commented your not chasing numbers but you may have a figure in mind. Hope it all goes swimmingly though. Sounds well thought out.
What’s that coming in at Zippy? Also what BHP you looking for? I know you previously commented your not chasing numbers but you may have a figure in mind. Hope it all goes swimmingly though. Sounds well thought out.
£4880 still not decided on turbo yet mate i think i would be happy with a very spooly 420bhp
18 March 2018, 01:42 PM
