I have done alot of research on a 94+ B/H series swap, and Turbo D, and I have looked at my options, and thought about what I want.

I have come up with this:

#1 Keeping it street legal.
#2 Being able to pass Cali emissions, and laws. (Moving there for school in October)
#3 Keeping decent MPG.

I have searched for topics on the B18 block and B16 head, and have not come up with much, and I wanted to know more about the flow of a B16 head compared to the B18 head, and if I would be beter off going with a B18 block, and a ported B16 head?

 

there are 2 different main b18 bottomend+blocks.

the c1 head is different than the c5 or b16 heads, but the c5 and b16 heads are cut from the same basic mold.

in all applications the c1 head provides a higher compression so it is the preferred head for those who know what they are doing, where alot of guys say they have "psuedo" type-r c5's by putting a b16 head atop a b18c1 block, but it's just stupid because you're just going to lose power becasue of the loss in compression.


inorder of breathing the best is the c5 head, the second best is the c1 and the b16 is worse than both

if you use an LS block i'd suggest using a c1 head (i'm not sure if it will clear tho you'd have to check with someone in the LS/vtec circuit) because the higher compression will give more power.


all in all i say get a b18c1 (GSR) engine and call it a day... if you wanted to you could put in type-r parts (cams/pistons) and actually end up with more power because of the heads compression

 

I dont have the funds for a B18C1, or I would.

So the B16 head on a B18 block is just a bunch of crap or what?

So if I cant afford the B18C1, should I just go with a B16 with upgraded internals?

 

more displacement is always better.

if your going to build the motor, then the loss in compression given due to using the SiR head is not going to subtract any power, because in all liklihood you wont be running the same compression if it's built.

B16 head on a B18 block is a great idea if you do it right, given there are quite a few people who do not do it right , and then they end up with a blown motor due to propper oiling, etc.


And just FYI, you might wanna check up on the CARB rules abit more, if your using a different head on a different block and they have a way of telling, there is no way your going to pass. Also if the engine itself is older then the car, or if you do not have any of the specificed CARB equipment (charcoal canister etc.)

In order to pass smog in CA with CARB rules, I would just get the cheapest B18 you can (like an LS) that is newer then the car, smog it, then wait until thats al over to start building a frankenstein motor.

 

But I dont want a frankenstein motor.... I just want somthing with a little more power than my D, with around the same MPG, and relyability.

What I meant by upgraded internals was port the head, new valves, springs, and maybe cams.

 

B16 sounds like what you need. It's a bit more powerful than any stock D-series, I still get around 29-32mpg, and it's been reliable.

 

werd and the rod stroke ratio is much better for reving than the b18 (which is the main reason why the k20 is so hyped now is becuase of it's PERFECT r/s ratio)

 

A b16 swap with a head build would cost just as much or more than a b18c.

 

i'd honestly like to see more high revving b16 turbo's than all the ls turbos out there now....

 

Alright, well, I like the fact that the B16 gets good MPG, and the fact that it is a DOHC. Instead of SOHC. And still has VTEC.

I think I will get the B16A SiR-II complete change over with LSD from Hmotors...

What does everyone think?

Also, I can get a B16 head ported here for 400$ + a valve job, springs, titanium retainers, and cams for another 800$ =$1000.

That would be 3250.00 for a B16A, ported, beefd up springs, lighter retainers, valves, and a valve job.

If I got a B18C, I would spend 3449.00 for all stock parts... And get the same or less power...

Also, I only have enuff $ for the B16 complete changeover, and later on I can get the head done. If I wanted to do that to the B18, it would cost me more in the long run.