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Joined: Apr 2005
Posts: 179
CEG\'er
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OP
CEG\'er
Joined: Apr 2005
Posts: 179 |
Does anyone know what the limit of the stock block and internals? I am more interested in what the stock crank and the block can handle. I have already swapped my pistons and rods for forged pieces. But If we can get a post on all of the parts, it may be beneficial to others.
95 Contour, Custom EVO bodykit, 2.0l, PNP Focus head, Stage 2 cams, Je pistons, Eagle rods, 4in1header, 2.5" header back exhaust(complete stainless), D P nitrous, ram air intake, 10mm wires, flamethrower.
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Joined: May 2003
Posts: 495
CEG\'er
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CEG\'er
Joined: May 2003
Posts: 495 |
A stock block can do 300whp with 110+ octane racing gas and a huge turbo and proper tuning. Only a few Focus Zetecs have hit this number though. The rods and pistons are real weak but if detonation is kept under control some say the internals could do 400whp.
Some have done 250whp regularly on stock gas, but again you need a properly sized turbo and intercooler. The weak link, from what I hear are the main caps, but even those have done 300whp.
2000 Rio Red I4 Cougar
200whp & 210wtq at 9psi
254whp & 276wtq with NX 35shot
WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip
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Joined: Nov 2002
Posts: 8,143
Hard-core CEG'er
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Hard-core CEG'er
Joined: Nov 2002
Posts: 8,143 |
just curious what cams you have and what compression are you running at with those pistons?
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Joined: Jul 2002
Posts: 417
CEG\'er
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CEG\'er
Joined: Jul 2002
Posts: 417 |
i've always been told the 2.0 zetecs are good for 230bhp at the flywheel, beyond that they would need upgraded internals.
the silvertop zetec is a bit stronger in the bottom end than the blacktop.
ideally if your over 200bhp at flywheel towards 230 it should have upgraded conrod bolts, they are a weak point. apparently they can be changed with the engine in the car by removing the sump but i spoke to a tuner about doing them on mine and he didnt think it would be very easy
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Joined: Nov 2002
Posts: 8,143
Hard-core CEG'er
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Hard-core CEG'er
Joined: Nov 2002
Posts: 8,143 |
i don't think thats very accurate, there are guys running 200hp at the wheels daily so there is no way they would only last til about 200 at the flywheel.
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Joined: Jul 2002
Posts: 417
CEG\'er
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CEG\'er
Joined: Jul 2002
Posts: 417 |
UK zetecs must be different to USA zetecs then
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Joined: Apr 2005
Posts: 179
CEG\'er
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OP
CEG\'er
Joined: Apr 2005
Posts: 179 |
I didn't have the block shaved or anything. Assuming the head isn't shaved (keeps the combustion chambers stock in size) the pistons in my ride are designed to deliver 7.8 to 1 compression. Lower compressions are better for turbo's.
95 Contour, Custom EVO bodykit, 2.0l, PNP Focus head, Stage 2 cams, Je pistons, Eagle rods, 4in1header, 2.5" header back exhaust(complete stainless), D P nitrous, ram air intake, 10mm wires, flamethrower.
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Joined: Apr 2005
Posts: 179
CEG\'er
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OP
CEG\'er
Joined: Apr 2005
Posts: 179 |
Comp stage 2's for the focus. The oil pan can be dropped much easier if you take the bolts out of the front and rear motor mounts and remove the passenger side mount.. This lets you pull the engine up high enough for the oil pan to clear the cross member. I rebuilt the engine in my car twice before I built an engine and swapped it for my old one.
95 Contour, Custom EVO bodykit, 2.0l, PNP Focus head, Stage 2 cams, Je pistons, Eagle rods, 4in1header, 2.5" header back exhaust(complete stainless), D P nitrous, ram air intake, 10mm wires, flamethrower.
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Joined: May 2002
Posts: 21,653
I have no life
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I have no life
Joined: May 2002
Posts: 21,653 |
Didn't turbo tom have 400whp on a stock bottom end.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
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Joined: Nov 2002
Posts: 8,143
Hard-core CEG'er
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Hard-core CEG'er
Joined: Nov 2002
Posts: 8,143 |
I don't believe so...I think that was stock block not bottom end.
Also why the drop in compression if you're running nitrous? Are you planning on a turbo install?
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