Originally posted by sunburn
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ENG: F22B DOHC Head Swap onto F22AX Block
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Originally posted by 91accordwagonI've yet to see thisi question so I'll just go out with it.
This is the thing that I'm worried about when doing this swap, since you use the h23 crank gear (smaller) your oil pump is going to be prone to going out and I'm afraid of it happening at the worst time possible. So here's my question, what about using the h22 belt instead? the f22 crank and h22 crank pullies are nearly the same and the distance relation from crank to cams is the same. This way would save pulling the gear on the swap and possibly save your engine down the road. So there's the idea, Go brains go, lets get some post info on this one.
Bumping because I want to know the response to this also! Someone come on and answer this!
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NoSlo... where the hell are you? Haha -- Bumping for the answer.
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I'm not all too sure about what car they came from. I always thought it was the 92-95si prelde models but I could be wrong. But anyways yes its pretty hard to come by this head. You can find a whole f22b dohc engine on ebay for 650$ at the lowest. But i've only seen them go that low a couple of times, mostly they go for 700-800$. But anywho goodluck.
My Official Vouch Thread
MY For Sale Thread!!!
Recent Members Sold To:
ALOW1, TheNextAZN
Members Sold To (Vouches):
ALOW1, Phempa, hpaccord91, aznsyco84, 93EXaesthetic, civic_90_08, wrichards2005, SuperTuner12010, JDM_EJ, Ralphie, cooneyb81, HondaFan81, quakerjoe, tanNn2koo, 91Accord-LX, JARHEAD293, TheNextAZN, (TONS MORE)
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Originally posted by 91accordwagonI've yet to see thisi question so I'll just go out with it.
This is the thing that I'm worried about when doing this swap, since you use the h23 crank gear (smaller) your oil pump is going to be prone to going out and I'm afraid of it happening at the worst time possible. So here's my question, what about using the h22 belt instead? the f22 crank and h22 crank pullies are nearly the same and the distance relation from crank to cams is the same. This way would save pulling the gear on the swap and possibly save your engine down the road. So there's the idea, Go brains go, lets get some post info on this one.
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Originally posted by xwade01I'm not all too sure about what car they came from. I always thought it was the 92-95si prelde models but I could be wrong. But anyways yes its pretty hard to come by this head. You can find a whole f22b dohc engine on ebay for 650$ at the lowest. But i've only seen them go that low a couple of times, mostly they go for 700-800$. But anywho goodluck.1993 Prelude S
F22A1
custom'ish turbo setup
180 whp/217 ft-lbs super hot, super humid, super rich, boost falling off at 8psi
18psi boost spike = BOOM!!!!!
currently being rebuilt
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Originally posted by 91accordwagonI've yet to see thisi question so I'll just go out with it.
This is the thing that I'm worried about when doing this swap, since you use the h23 crank gear (smaller) your oil pump is going to be prone to going out and I'm afraid of it happening at the worst time possible. So here's my question, what about using the h22 belt instead? the f22 crank and h22 crank pullies are nearly the same and the distance relation from crank to cams is the same. This way would save pulling the gear on the swap and possibly save your engine down the road. So there's the idea, Go brains go, lets get some post info on this one.
1) The timing gear has to do with the cam timing and water pump with relation to the crankshaft. The timing gear is DRIVEN by the crankshaft and DRIVES the water pump and cams via timing belt.
2) The oil pump is DRIVEN by the crankshaft itself, oscillating the oil pump gear within the oil pump housing for oil pressure. Thus, the oil pump itself is NOT DRIVEN by the timing gear at all. The timing gear is a separate system in itself.
3) If ANY pump is to have issues related to the timing gear, it is the water pump since IT IS DRIVEN by the timing gear via the timing belt and the cams themselves would have issues as well and cam timing would not be in synchronization. The purpose of swapping the H23 timing gear is to transform the F22ax block to handle the DOHC cam timing that the JDM F22B DOHC non-VTEC and H23 DOHC non-VTEC have. This timing gear swap will keep the cams and water pump in check.
4) The JDM F22B DOHC non-VTEC has the same basic block as the F22ax SOHC non-VTEC. This is part of the reason why this headswap goes on with no modifications to the head and you can even use the F22ax headgasket as they share the same cylinder bore diameter. When people swap the JDM F22B head to a F22ax block, they are basically turning their motor into a JDM F22B motor as a whole. The reason your compression ratio bumps up some is because of the JDM F22B cylinder head itself!! It has a 47.2 head CC compared to the F22ax 50.5 and if you do the calculations like I have, it will give you 9.2 CR vs the F22ax 8.8 CR.
5) Also, in your statements you first talked about "crank gears (timing gear)" then you switched subjects talking about crank pullies. Your whole statement became unclear at this point, but I get what you are trying to say anyhow. Just for clarification I already explained the timing gear portion, but the crank pulley portion is TOTALLY different. The crank pulley runs power-steering, alternator and air-conditioning (if you have A/C). Crank pullies have nothing to do with any of this as they are DRIVEN off the crankshaft to run completely unrelated systems to the original question at hand.
Point, set, match...Last edited by HondaFan81; 02-05-2006, 03:51 PM.
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Originally posted by HondaFan81
Point, set, match...
Thanks for the cocky response, next time someone ask a question, drop your pride for a second. Not everyone has done this swap, and questions help those who are preparing for it to do it accurately without blowing an engine. Good response and I'll go into further detail on my question tomorrow.
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Originally posted by 91accordwagonThanks for the cocky response, next time someone ask a question, drop your pride for a second. Not everyone has done this swap, and questions help those who are preparing for it to do it accurately without blowing an engine. Good response and I'll go into further detail on my question tomorrow.
Anyways, those that know me....know I like to kid around....take a chill pill aight homieLast edited by HondaFan81; 02-06-2006, 01:32 AM.
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Originally posted by WiKKeDV16.... the h23a head swap and the f22b headswap vary in one small detail.. lol.. which i guess makes em "different" .. one you have to silicon shut a passage and the other u dont.... everything else is identical...
hold on to your butts
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I believe it is. F22Ax is 85mm and the H23 is 87mm. If i'm wrong on the #'s correct me, but i'm pretty sure.
My Official Vouch Thread
MY For Sale Thread!!!
Recent Members Sold To:
ALOW1, TheNextAZN
Members Sold To (Vouches):
ALOW1, Phempa, hpaccord91, aznsyco84, 93EXaesthetic, civic_90_08, wrichards2005, SuperTuner12010, JDM_EJ, Ralphie, cooneyb81, HondaFan81, quakerjoe, tanNn2koo, 91Accord-LX, JARHEAD293, TheNextAZN, (TONS MORE)
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