Re: Also, the crx has a much
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Did you see the D15B8 torque peak was at 2000 RPM? :jawdrop: |
switch hf fd?
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Re: Thanks Guys for all the
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Re: switch hf fd?
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They also differ in
They also differ in mounting. That ****box engine will be my new engine, :p
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Re: They also differ in
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Re: 1988-1991 CRX HF 1-2k,
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With a little reseach I just realized that the CRX HF is geared for better fuel economy. If I do the engine swap, I assume I will not need that model, except for maybe some of the other HF Options (Like light wheels???)? Without getting into engine swap details (I'm sure it is well documented on the internet), what advantage does the 92-95 Civic VX d15z1 engine have over the stock 88-91 CRX HF engine? (Let's say both are running at their peak efficency). Great Info Guys! Keep it coming! |
The z1 has a bit of interior
The z1 has a bit of interior design but also has vtec, which virtually shuts off 4 intake valves under 3k rpms. It can also run much leaner and has things like roller rockers to reduce friction.
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SVOBoy is right. The d15z1
SVOBoy is right. The d15z1 (civic VX engine) has a unique design that actually can allow for air fuel ratios of 20:1. Below 3000 RPM one of the valves is only slightly open which actually causes a "swirling" action that helps promote leaner AFRs as well.
The d15z1 also has a 5-wire wideband oxygen sensor which can give better feedback and help achieve high AFR. Oh, and it gets better power than the stock crx hf engine, so it won't seem so slow. If you put a d15z1 engine into a civic/crx/etc made between 1988 and 1991 you'll need to get a transmission from a 1988-1991 car. (the 1988 is unique, the 1989-1991 are interchangeable) I have a CRX HF transmission from a 1991 and will be mounting it to my d15z1 sometime soon. It will work in my 1989 civic sedan with no problems. Plus, the d15z1 is obd1 and is a little cooler. :) the crx hf engine is just an 8-valve engine. |
as far as I've been able to
as far as I've been able to tell, the crx hf only came with steel rims, not sure what alloy of steel they used, but the steel rims from my crx hf are a few pounds lighter then the stock steel rims from my civic.
the popular answer you are going to get for rims is going to be civic vx, hx, or honda insight rims, there was also one modle of Miata rim that weighed around 12 pounds, and had the same bolt pattern, but I'm not sure about wheel offset. If I had the time, and money ($3000 should defently be enough) and didn't need a back seat, and could find any crx's around here (there is maybe one for sale per month) I would get one, and swap a vx engine in to it, and just like the civic modles, the si is heaviest and base modle is lighter, and fuel effiecent modle is lightest. one of the other things that both the crx hf and civic vx don't have that make them lighter, is a sway bar, and if you live in Nebraska or other windy states, you might notice that it's a little harder to handle in crose winds. |
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