So I just bought a new '91 CRX, and I have 2 questions:

I am going to drop in a new motor, but I'm not sure if I should go B16 or B18. I'm def going to go Boost, so I'm thinking B16, because B18 (as far as I can tell) is designed more for higher compression. I am going to drop the cash for the engine, so I want something nice, and I don't mind working hard (even if I have to frankenstein something like an LS/VTEC). Any recommendations?

Also, whats the advantage of a hydro clutch over cable and is it that hard to convert if I'm dropping in a new motor?

TIA.

 

if money is not a concern you should go with ls non vtec turbo! just my thought

 

For turbo, I'd go with a GSR motor (B18c)...for your tranny Q, get an LS cable tranny (longer gears), they're easier to find and install since you're car is made for a cable tranny...but again if money is not a problem, do a hydro tranny swap and get a GSR or ITR tranny...

 

(Whizzard9992 on friend's Name)

Money's not a problem, but def a consideration. Thanks so far. I was thinking of doing it in 2 stages: 1st I'll drop in a new motor and take care of things like clutch, body kit, suspension, etc. The second stage I'd outfit the motor with a VAFC, New Fuel System, New Spark, and of course: the Turbo. MAYBE if I have enough cash I'll beef up the motor for better boost, but that's way down the line.

Im not too concerned about speed in my NA config before I boost. I just need a project car to learn from, step-by-step. First show then go.

Money doesn't flow for me (Otherwise this post would be on a supra board ), but I do want something nice. So far it seems the B18C is what I'm lookin for. I guess the question now is LS or VTEC?

 

B18A1 will cost you less than half of a GSR motor. It will already handle a respectable amount of boost, is lower compression, and you can have the head ported and throw a set of cams in there so you will never need a VTEC head.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Caleb V &raquo;</TD></TR><TR><TD CLASS="quote">B18A1 will cost you less than half of a GSR motor. It will already handle a respectable amount of boost, is lower compression, and you can have the head ported and throw a set of cams in there so you will never need a VTEC head.</TD></TR></TABLE>

What's the diff between the B18A1 and B18B1?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94BlackCivicEX &raquo;</TD></TR><TR><TD CLASS="quote">

What's the diff between the B18A1 and B18B1?</TD></TR></TABLE>

About 10hp...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94BlackCivicEX &raquo;</TD></TR><TR><TD CLASS="quote">

What's the diff between the B18A1 and B18B1?</TD></TR></TABLE>

but the blocks are identical

 

So I'm looking @ this $1600+ total price difference between the B16A and B18B and I ask myself, what am I buying? $1600 in potential? The B18B has 15 less HP than the B16A...

I guess what I'm asking is, after I boost, what's going to be the real difference? More PSI, More Raw HP, just a stronger block? From what I can tell I probably won't even see a difference in speed on my quarter until I boost or spray, right? We all know the quarter is where it all counts

Thanks to everyone helping me to lean this ish. MUCH appreciated

--ROBERT

 

you have to establish some kind of goal for your car. B16s make good power, but obviously the gsr will make more hp/tq in the same setup and the LS will make more tq. Gsr will cost more than the others. The LS and the GSR will make a lot of torque, maybe too much on street tires in a light car? Depends what you are doing. The cheapest way to break 12s is Ls turbo on slicks at 10 psi on a t3/t4 for example. But that may not be your goal. Sometimes those old b16s are ragged out.

The question is open ended and so is my answer...

 

Thanks

What do I need to do to the a B16 so it'll handle 10 PSI, or will it take 10psi with minor aftermarkets (Catback + Fuel + Spark)? As in, would I need to do anything like sleeve the block or replace my pistons?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Whizzard9992 &raquo;</TD></TR><TR><TD CLASS="quote">Thanks

What do I need to do to the a B16 so it'll handle 10 PSI, or will it take 10psi with minor aftermarkets (Catback + Fuel + Spark)? As in, would I need to do anything like sleeve the block or replace my pistons?</TD></TR></TABLE>

Keep in mind that boost pressure doesn't mean jack when you are talking about the motor. It depends how big the turbo. 10psi on a t25 is not the same as 10psi on a t4. Its about volume of air and the power that the motor is now making that is the problem.

I'll assume that you will be running a decent sized t3 or a t3/t4. the B16 will probably hold 10 psi with good tuning, but you will be pushing the limit (approaching 300hp). I would say be happy with 7-8 psi for a while and if you have the hunger for more, get the motor built. The motor should last long at 250 or so hp, and I'm sure it will pull pretty hard.

Another option is to get something like the inline pro headgasket (compression will drop a point or so), run your 10-12 psi and be happy around 315 hp. I just think if your gonna do it, go all out and save the 300 from the headgasket and start building the motor. It can get pricey though.

 

For boost, I would reccomend going with the LS.

 

ls block and gsr tranny and turbo. its the most inexpensive way to go REALLY ******* fast.
check the sig. thats my first and only run ever. its got some low 12's in it with a better 60'. and this is in a 5gen coupe
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