I'm contemplating doing a b16 swap in my 91 SI. Its pretty pricey, but you have to pay to play. I was just wondering if it was worth it over my other option. A jdm zc 1.6. Its my understanding they're pretty much just drop it in and go. My goals are in the 300whp range after I go the turbo route. Any and all suggestions are welcome thank you

 

I have a jdm gsr in my 91 sedan. With 180 hp its more than 1/2 way to the 300 hp goal. I myself have been debating which forced induction route to take also. I would be happy to see 300 from my set up

 

From what I've seen, a B16 will make 250hp @~7psi and 300hp @~11psi. 11psi seems kind of high to me, for a motor with such high compression, but it seems there are some people who are having no problems at that pressure.

Even at only ~150hp, I love my stock B16A in my EF. I wouldnt say it's 'fast' but it is certaintly very quick, and VERY fun to drive!

 

If you plan to go turbo in the future Y not go ls b18 or b20? Cheaper up front and easy to build. Ive seen ppl making more than 300hp with these turbo'ed

 

I have a B18c1 and made 296whp with a dented dp and exhaust leak. takes some research, but once you get it up and going, fun fun fun

you don't measure hp by psi.

LS is cheaper and if you blow it up, cheaper to replace. not easier to build since they're basically the same. but mod for mod, psi for psi, the B18c1 will make more power over the B18a/b, just less tq

i've had both with the same turbo kit and find the GSR to be more fun.

 

Well I've done some thinking, and I've come up with maybe 250 should be my lowest goal. As this is my first Honda I'm just looking for something simple to drop in and go. And from what little I've read it seems the zc block is extremely easy, its a direct job right? Should bolt up to the tranny I already have? If I'm missing something let me know

 

Yes, I know that. But there is a strong correlation when we are talking about very similar engines (mainly stock b16a's) and a standard size turbo (50-something trim).

The numbers I posted came from hours of reading through the B16 turbo thread.

 

i'm not as knowledgeable on D series as i am B, but i believe the ZC will drop right on in just like any D series, minus the dohc D. should be able to use your same mounts and trans

there is no standard size turbo. different dynos yield different #'s just like the same turbo will yield different #'s even if the engine is identical. i understand what you're saying, but it's not accurate. hours of reading through the b16 turbo thread should have told you this

 

No boost, I would say the B16 is a terrible waste of money over your stock D16.

However on boost with a goal of 300, I would say B16 is still a terrible waste of money. =P
I would go after a B18 for sure. The extra torque and availability of parts is worth it.
If you want to get fancy, then put a GSR head (or a B16 if you don't care about the quench pads) on later.


B series overall is a better platform for a build, so 300+ I would go with the B series.
Since you are looking at 250, then a D will get there for about the same cost as B.
You won't have to get a mount kit, but you will have to get rods and pistons.
B can do the 250 stock on an average condition block.

 

So the zc block wont do good with boost? Or wont do good at 250hp period? I've decided to make this my autocross car as I am not comfortable tearing up my brand new STI. That being said I will probably keep it N/A. I think I want the DOHC zc. Any modifications to make that work?

 

boost the A6...a little cheaper and still be fun to drive. Just saying

 

Does not compute, new STi but don't want to auto-x it?

but anyway, skip the dohc zc. Hard to find parts for. I did the auto-x novice school this past weekend and did rather well. Small turbo means early spool so no spinning really. But don't think me being turbo would make me competitive. Would have a lot of faster cars in the group I would have been in.


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Well I just got stuck with a $1100 service bill from the dealership because I ran it 2 months ago and the crank sensor broke causing it to jump timing and slap a valve. Fun. They voided my warranty completely(dicks). So no more autocross for the STI.....parts are suuuuuuuper expensive for them. The reason I like the zc block is because my friend happens to have one that he bought 2 weeks ago and he sold his car, he is going to give it to me. Can't complain about free stuff

 

Sell it or trade it. Will cost you more to put it in (I believe) and less if a headache.


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I was under the impression that it would just drop straight in. The only thing I've found is you need to swap over two wires from the distributor to the exhaust cam. Not trying to argue just a discussion on what I've read

 

i can't tell you anything really about the dohc zc engines

 

Also think ls turbo is your best option, just cheaper if it blows, Picked one up for $300 and sold my blown one for $250 lol

 

But if his plans are auto-x, then a stock LS should suffice. A turbo would not make him competitive unless he's doing it for fun like me

 

Wouldn't you do better with a supercharger in AutoX rather than a turbo?

Anyway, you were asking about no internal work on the ZC and boost.
If it's a used block, then 180~190hp. 210 on a great fresh block.
The rods are the devil so if you want to go higher, then rods and pistons.
Maybe 280 or so... just like a stock B.

 

I don't like the Dohc ZC But!!! I have done a couple of these swaps with my cousin and friends. It is a direct swap you can even use your stock tranny as we did with my cousin and I believe the E.C.U. don't quote me on that and mounts,axles,shift linkage, throttle cable etc. I bought two hondas one with a single cam swap a 89' CRX SI and a 91' SI civic Hatch with a DOHC cam ZC swap and the DOHC zc was a pig the SOHC Zc in the Crx would walk all over it. TRUE little powerhouse. AS FAR as the great engine debate B16 will always be my favorite in B series driven them all and like it best. Each motor has a weakness some better than others. As far as getting parts for the Zc it is hard and good luck if that is the swap you go with.

 

Well anything is better than what I have in it currently. The best part of the dohc zc is that it won't put me in a ridiculous class in autocross according to the president in the region