wud up its me agian, earlier i was thinking about doing the ZC swap into my 89 crx si but now i was looking into the d16z6 swap instead. i heard this was i wont have to worry about it not being street legal ( so i heard ) my question is, is this a recommended swap and what kind of hp would i be expecting from this engine. any comments are welcomed, thanks
I just recently did this swap. its worth it and completly legal. the z6 makes 120-130 hp. you can bump this up my using high comp pistons. heres what you will need:
Z6 head - from a 92-95 Civic EX?
P28 ECU - for best results
wire conversion harness
Timing belt for a civic ex
adjustable cam gear
A D16Z6 is a legal swap in California so long as you swap the whole engine and match the ECU (P28 in this case). This means you'll need to convert the car to OBD-I, but you can keep your transmission. It's rated at 125hp compared to the 108 found in the stock D16A6. This is more peak power than you would get from a SOHC ZC and almost as much as a DOHC ZC (129), though I bet the Z6 has more "area under the curve" due to VTEC.
With I/H/E, I would not be surprised if you get close to 140 hp.
Tiersin said:
I just recently did this swap. its worth it and completly legal. the z6 makes 120-130 hp. you can bump this up my using high comp pistons. heres what you will need:
Z6 head - from a 92-95 Civic EX?
P28 ECU - for best results
wire conversion harness
Timing belt for a civic ex
adjustable cam gear
The block is the same but the pistons are different, and Cali smog technicians will be looking at the markings on the head, block and ECU to make sure they match. A D16A6 block with a Z6 head will be an instant fail.
ask around, i'm sure you could get all the parts you need from people in the community. maybe not the block, but everything else. IMO, its the best swap for the money.
A D16Z6 is a legal swap in California so long as you swap the whole engine and match the ECU (P28 in this case). This means you'll need to convert the car to OBD-I, but you can keep your transmission. It's rated at 125hp compared to the 108 found in the stock D16A6. This is more peak power than you would get from a SOHC ZC and almost as much as a DOHC ZC (129), though I bet the Z6 has more "area under the curve" due to VTEC.
With I/H/E, I would not be surprised if you get close to 140 hp.
The Z6 swap has other advantages over a ZC, not the least of which is that they're newer. They're more prevalent as you pointed out, and probably more reliable. It's also much easier to find parts.
Check the Honda-Tech classifieds. The D16Z6 came in all 92-95 EX and Si Civics, and when those guys upgrade they are willing to sell them. You could also call around to junkyards and see if they have any.
You definitely don't want to go through Honda. They can sell you a brand new engine, but the price is outrageous.
if u are going to go with the z6, instead get the jdm d15 vtec, same as the z6 but under rated from the factory at 130 and has 2stge vtec, its smaller at 1.5l but makes more power than the z6 and the y8. trust me there is this guy i know down here in orlando has that swap and he smokes, z6s,y8s, and even some b-series. here is the link http://www.hmotorsonline.com/shop/sc200 ... item=30019
if u are going to go with the z6, instead get the jdm d15 vtec, same as the z6 but under rated from the factory at 130 and has 2stge vtec, its smaller at 1.5l but makes more power than the z6 and the y8. trust me there is this guy i know down here in orlando has that swap and he smokes, z6s,y8s, and even some b-series. here is the link http://www.hmotorsonline.com/shop/sc200 ... item=30019
yeah the 3 stg vtec its very powerful and does get good gas mialege, as far as passing emmisions it all depends on what u do , i mean there are a lot of cars in cali that are not street legal but fin a way to bypass it so where theres a will theres a way
35k miles is about how much they've been driven. They certainly have plenty of life remaining. Remember that the price is just for the long block, it does not include the ECU, tranny or shipping.
The parts are OEM Honda. H Motors Online is widely considered the best online store for engine swaps and parts. You can find no better prices or service.
The 3 stage VTEC motors simply combine power-oriented VTEC with VTEC-E. It will not make any more power than a D15B VTEC or a D16Z6. What you get is peak power similar to a D15B VTEC combined with peak fuel economy similar to a D15Z1. There are USDM performance VTEC motors and USDM VTEC-E motors, but no USDM motor with both, so you really do need the JDM ECU to run it properly. If you're thinking about buying the 3 stage motor and running it with a P28, you would be better off with a simple 'Z6 or 'Y8.
I've got a JDM SOHC VTEC ZC, which is almost exactly the same as a Z6, i think it might have 5 more HP due to a slightly different cam profile or something. Mine has a Y8 intake manifold, I/H/E, etc. and it's not too bad, pretty comparable to the good ol' DOHC ZC (I've had one of those, too). Either one is definitely an improvement over any stock USDM CRX engine, and much cheaper than a B-Series swap.
I'll probably end up supercharging mine next spring...we'll see.
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