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Old 10-09-2018, 21:02   #1
AaronJ
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450BHP Over engineered HELP/ Planning for project

I've been having a bit of a head scratch as have found out i still have an evo 4 bottom end in my 4. After lots of deliberating, I'm still at a loss as i only really have the goal to get the car to about 450bhp.

I dont really want to track the car i just want to build the redundancy into the car to run the 450bhp without stressing any component of the setup. I'm very aware Norris Designs do varying packages.

I think what i really want is a setup with an aggressive power deliver when the turbo kicks in. something i always remember from my old 2, at the moment id say the 4 is a bit too linear. equally aware that with the 4 block is always going to be weak spot, so id be looking at a short engine either way.

i've seen a 4g64 block for sale at a good price with crank, cradle, rods and pistons, but obviously the rods and pistons will need replacing, but that build will obviously need a lot more subsidiaries that im guessing that i may be better off going with a short block.

reading other threads ive seen that its either 2l LR or 2.3 stroker for the options im looking at there is only £400 difference and both capable of 750bhp.

obviously not in a position to dump £5800 at the moment

Just need peoples suggestions as the engine is pretty standard short of hard pipes and hard induction pipe still on the horrible 510 injectors which i plan to replace within the next month or 2 along with a 5 or 6 ecu.

Thanks again guys
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Old 16-09-2018, 12:17   #2
Aj82
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For 450bhp I'm fairly confident you can achieve that reliably with a standard (ish) 8 bottom end and an 80series turbo or atleast not far from it mate.
A search on here will soon show whats possible.
The extra you could save being spent on handling and braking upgrades will transform the car and make it very fun to drive.

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Old 16-09-2018, 12:45   #3
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Later engine (E6 plus) with rod job and supporting bolt ons would be my way for 450

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Old 16-09-2018, 12:58   #4
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How far could the 80series be pushed but still be reliable mate?
Can a standard e8 block hold 450bhp or would it also need rods? I know the earlier block with rods would ensure reliability and a stronger base.

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Old 16-09-2018, 13:20   #5
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E8 block with a rod job could handle 500+bhp, but to get that will need supporting mods (Turbo, injectors, fuel pumps etc)
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Old 16-09-2018, 18:53   #6
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How far could the 80series be pushed but still be reliable mate?
28 psi.

Regarding how much they can handle. well that will depend entirely on how well it is tuned. All being done properly, a low klms standard Evo VIII or IX bottom end will handle 450 bhp all day.
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Old 19-09-2018, 16:23   #7
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28 psi.

Regarding how much they can handle. well that will depend entirely on how well it is tuned. All being done properly, a low klms standard Evo VIII or IX bottom end will handle 450 bhp all day.
I wouldn't risk it on standard rods, personally.
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Old 19-09-2018, 19:45   #8
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Call me cautious but i would not go over 400 on a stock block 8 or 9.
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Old 20-09-2018, 02:19   #9
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I wouldn't risk it on standard rods, personally.

That's why I said "all being done properly".
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Old 14-05-2019, 19:16   #10
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the yanks state they can run 500-600 bhp on standard rods...yeah right


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Old 15-05-2019, 03:40   #11
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the yanks state they can run 500-600 bhp on standard rods...yeah right
Nuff said
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Old 15-05-2019, 07:38   #12
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Personally if you haven't got the out right funding, I'd keep running the evo as it is, and start a parts collection when you can afford it, keep a look out for a bottom end, them once you have all the parts you need then look at getting a builder to out it together,
Personally I'd want to forge it going for that sort of power, dont want the eninge to be at the top of its game at that boost
I bought an 8 engine and forged it for my 4,
Hopefully will be in a built in a few weeks,
I found once the engine is been built theres lots of little bits you want doing
I ended up with a port and polished head, new stronger springs, some upgraded cams
The list can literally keep going
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