courtney42

I have a 94 del sol si , i googled my vin and it comes up as an si also.
But i noticed the si is supposed to come with the D16Z6
On my block it is etched D15B but it has a Vtec valve cover on it?
the del sol s comes with a D15B7?
Do they use the s block on a D16z?
I'm a little confused.

DeLsLo95Si

The 94 del sol s comes with a d15b7
The 94 del sol si comes witha d16z6


but you have a d15b which is a

D15B

• VTEC
• Found in:
  • 1991-1999 Honda Civic VTi EG4 (Japanese Market)
  • 1992-1998 Honda CRX VXi EG1 (Japanese Market)
    • Displacement : 1,493 cc (91.1 cu in)
    • Bore and Stroke : 75 mm × 84.5 mm (3.0 in × 3.3 in)
    • Rod Length : 137 mm
    • Compression : 9.6:1
    • Power : 128.22 hp (130 ps) @ 6800 rpm & 101.9 ft·lbs (14.1kg/m) @ 5200 rpm
    • Redline : 7200 rpm
    • Fuel Cut : 7411 rpm
    • Valvetrain : SOHC VTEC
    • Head Code : P08
    • Fuel Control : OBD-1 MPFI

trustdestruction

Your motor has been swapped to a JDM D15B.
Be happy though, the one you have is slightly better than the D16Z6 you would otherwise have.

Also, not in this case since you do have VTEC, a valve cover that says VTEC on it doesn't necessarily mean you have VTEC, because you can put a VTEC valve cover on a D16Y7. Though, you don't have to worry about this with engines prior to 1996 because the D15's, which are all non-VTEC (besides JDM), use a different valve cover and you can't put a VTEC valve cover on them anyway. Also, many D16Z6 and D16Y8 engines came without valve covers that say VTEC on them, but they do have VTEC, regardless of the valve cover.
When figuring out if an engine has VTEC or not, just look for the VTEC solenoid. That is how you can tell for sure.

The_Honda_Guy

I have yet to see a D16Z6 or D16Y8 that have a non-VTEC valve cover unless it was swapped onto there. I can't imagine Honda would let those cars leave the factory with non-VTEC valve covers on them.

Also, to say the D15B is better than the D16Z6 is complete preference. The D15B has a shorter stroke and less torque than the D16Z6. Also, it is higher compression than the D16Z6, meaning it's not quite as "turbo friendly" if you will. There is essentially no advantage to the D15B compared to the D16Z6 because they make very similar power stock.

trustdestruction

i have one (d16z6), my friend has one (d16y8)... neither were swapped out... lots of people have them.






true, good point

The_Honda_Guy

Have you had those two cars since they were brand new to know they have never been swapped?

trustdestruction

no... but...

if mine was swapped out, where do you suppose my valve cover came from?
only non-VTEC engine (USDM of course) it could have came from is a D16Y7, and D16Y7's valve covers don't look like that, they look just like the one on my friend's D16Y8.

The_Honda_Guy

Are you sure that there aren't other valve covers that fix the D16Z6? How about a valve cover from one of the bazillion other non-VTEC D16's from around the world that aren't made here?

trustdestruction

lol
i'm sure someone didn't go through the trouble of importing a valve cover from some other country just so they could take the one that says VTEC off of mine

trustdestruction

and here's another (upon first look, it doesn't appear to be a d16z6 because of the intake manifold, but if you look closely, it is a d16z6 swap into an EF or a CRX and they must have used the original IM... plus the website URL says it is a d16z6)

http://www.homemadeturbo.com/turbo_p...wastegate.html


...and another
http://www.homemadeturbo.com/turbo_p...l-install.html


also, if these were from another country, i doubt so many people in the USA would have them

z6hatchboy

not all of the v/c says vtec, i think the 92-93's just said honda and the 94-95's say vtec on them.Its just one of the odd things honda does just like, map sensors being on the firewall for 92-93's and being on the tb for 94-95's and all 92 civic are pre-wired for vtec.

trustdestruction

map sensor on the firewall?
huh?


mines on the TB and i have a 93

courtney42

Why would the D15B be less turbo friendly? Is it the compression ratio?

trustdestruction

yes

blinx9900

oh snaps, i opened this thread thinking it would be about del taco

courtney42

Well what about other parts i might need to get?
I need a distributor for it.
Do i tell the guy at the auto parts store i have an si and i'm good?

The_Honda_Guy

Um... do the JDM D15B's use the same distributor as the D15's over here? I can't imagine that it does, especially since it's VTEC. Didn't the D15B also use the 3 stage economy VTEC too?

KillBot

Only in some of the late JDM EKs. Its a somewhat hard motor to find...but a blast, even when hooked up to the CVT automatic.

The_Honda_Guy

Yea, I know that motor was rarer and was designed under the same idea that our HF, VX, and HX were with gas mileage in mind.

Didn't the JDM D15B use a different ECU too? Wouldn't he need a VTEC distributor from another D15 motor?

namewasdallas

what is the stamp on the block then search on here and youll know what motor you have unless its a mini swap then look for a vtec sen.

courtney42

Huh? sen? Serial number?
On the block there are a series of numbers with a bar code and also the D15B stamp with some numbers under it.
Can i use the numbers to look up information?

trustdestruction

You can run a D15B on a P28 ECU. It comes with a P30 I believe but you can use a P28. For the distributor I would imagine you could use a D16Z6 one, I wouldn't see why not.

NOFX

It appears that most SOHC VTEC engines in the US do not have valve covers which say VTEC on them. '96-'00 EXes (which have D16Y8, 1.6L SOHC VTEC engines) do not say VTEC.

As far as 5th gens and del Sols:
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/vtec-valve-cover-2204762/

The_Honda_Guy

Wow, I had never heard of that before that they didn't say VTEC. I guess I'm just a lucky bastard with my 94 EX that has the VTEC valve cover.

NOFX

No, you're not. '94-'95 say VTEC. '92-'93 do not. Your valve cover is just the stock valve cover.