RE: F22 or F23 ... (boosted)
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RE: F22 or F23 ... (boosted) - 12/7/2007 6:26:08 PM
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Aleckz
Posts: 2
Joined: 12/7/2007
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F22 and F23 are both Iron sleeved, But F23 rods are thin like a spaghetti... Stay with F22 block and since you want to swap a head, get 1 from H23a1 DOHC prelude, some ajustable cam gears and... You'll be set for around 160 hp baseline. With all the ajustability you wish to have on a turbo project. I'm personnaly rolling a 150 000 miles F22a4 with DOHC head in my civic... Pushing down nearly 250whp with 14psi (I know, It wont last long but I'm currently building another F22a4 with forged rods&pistons) Already 8000 miles on the setup, Still running very strong !!!
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RE: F22 or F23 ... (boosted) - 12/10/2007 11:23:15 AM
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HondaRacer4Vtec
Posts: 325
Joined: 7/28/2006
From: new york
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quote:
ORIGINAL: falkore24
How does VTEC put pressure on the engine? It opens the valves more and longer which would reduce strain. I could forsee a problem if the turbo is allowed to engage before the VTEC though.
Why does the ECU do all the oil checks and coolant checks to make sure everything is good before it activates? It must cause more starin on the engine and the ecu wants to make sure everything is ready before it delivers that power.
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Honda Accord 2000 ex coupe
4-cylinder-automatic
Short Ram Intake
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OBX Headers
17" rims with V-rated sports tires.
10.3mm spark wires.
Soon to be lowered 1" for the spring time.
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RE: F22 or F23 ... (boosted) - 12/10/2007 11:47:32 AM
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falkore24
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Joined: 8/16/2007
From: Wayne, NJ
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I don't like speculation. Explain the checks that you are talking about. As far as I know, oil pressure and coolant temperature are monitored continuously on all OBD2 cars.
< Message edited by falkore24 -- 12/10/2007 11:48:35 AM >
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2006 Scion TC (ZPI-18G pending)
2000 V6-AT (RIP 3G)
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RE: F22 or F23 ... (boosted) - 12/11/2007 10:09:44 AM
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KevinAccord
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Joined: 4/30/2007
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quote:
ORIGINAL: BlkCurrantKord
VTEC does not put strain or pressure on the engine. If it did, it wouldn't be there in the first place. However, VTEC will not engage unless the conditions are right, engine speed, oil pressure, etc.
so, my car is turbo and i left the VTEC on... should i unplugg the VTEC?
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2000 Accord LX i4 Turbo AT
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RE: F22 or F23 ... (boosted) - 12/11/2007 11:11:56 AM
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falkore24
Posts: 5545
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From: Wayne, NJ
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Noooo .... don't do that!!! If you disconnect VTEC without changing the camshaft, your engine will always run with the valves in the partially closed position hurting your performance majorly! If you use a VTEC defeating camshaft, this will be changed and the cam is tuned to move the valves properly without VTEC engagement. For your setup, you just want to make sure that your turbo kicks in when VTEC is already in the high cam mode.
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2006 Scion TC (ZPI-18G pending)
2000 V6-AT (RIP 3G)
Temp Search thanks to Finch13
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RE: F22 or F23 ... (boosted) - 12/12/2007 1:53:53 PM
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marbro
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you can tho...... if you want the turbo to spool up really late in the rpm band but youll probably get better gas mileage at the sacrifice of hp
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RE: F22 or F23 ... (boosted) - 12/15/2007 7:48:30 PM
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nafango2
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NO! YOU STILL CANT!
different cam profiles do different things across an RPM range.
one profile idles really well but sucks at high rpm, while another profile will suck at idle (leading to that BRRUmmmbumbumBRRUmmmbumbum sound from muscle cars) while dominating the high rpms.
Non-Vtec engines have a compromise between the two profiles.
Vtec engines have one profile for the low rpms and one for the high rpms. if you unplug it, youll be left with only the low rpm cam profile. You have to put in a Vtec Defeating cam to defeat this, or in other words, you need to put in a camshaft with a compromising cam profile, similar to the F22B2's camshaft (non-vtec)
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96 Accord LX 4cyl. 4dr AT w/o vtec (F22B2)
Security System / Keyless entry
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RE: F22 or F23 ... (boosted) - 12/16/2007 8:01:40 AM
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marbro
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you can say no you still cant all you want...... when yes... you can..... it doesnt mean it wont be a waste of time and/or money or even be long term solution to the life of the engine
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RE: F22 or F23 ... (boosted) - 12/16/2007 10:30:27 AM
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nafango2
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no, you cannot. Maybe small levels of boost, but once VTEC engages the backpressure from the exhaust will overwhelm the incoming boost pressure and push exhaust gases into the intake manifold. in other words, NOT GOOD!
also a fair amount of the combusting gas inside the cyl. will be exhaust gas, leading to much less power and much more detonation.
< Message edited by nafango2 -- 12/16/2007 10:31:12 AM >
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96 Accord LX 4cyl. 4dr AT w/o vtec (F22B2)
Security System / Keyless entry
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RE: F22 or F23 ... (boosted) - 12/16/2007 7:41:37 PM
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KevinAccord
Posts: 1011
Joined: 4/30/2007
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ok thanxs guys... very helpfull info... not gonna do it then... Thanxs everyone... i've got another question, but ill ask later, im @ my gf's house and i still dont have internet @ home (im moving)... gonna ask in a few days... thanxs again..
_____________________________
2000 Accord LX i4 Turbo AT
18" Konig Unknown Rims
MSD 6AL
Gold Line Suspension
Apexi Neo
Few other Mods...
Mini Cooper 2006 MT
HID's
17" Rims
Premium Package
Sport Suspension
Short Shifter
Panoramic Sunroof
Stock Engine (For
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