i have a 88 rex and the motor that is in it says d15b just that but it doesnt have a vtec head so what am i looking at?

it doesnt say d15b2 or 7 or anything like that im asking cuz i was wondering if i could put a vtec head on it and if so what kind will i have to use

thanks
-M. B


Modified by iheartlittlebear at 9:09 AM 3/29/2006

 

you cant put a vtec head on without major upgrades. That engine makes aroune 90 hp and is just fine in a crx.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iheartlittlebear &raquo;</TD></TR><TR><TD CLASS="quote">i have a 88 rex and the motor that is in it says d15b just that but it doesnt have a vtec head so what am i looking at?

it doesnt say d15b2 or 7 or anything like that im asking cuz i was wondering if i could put a vtec head on it and if so what kind will i have to use

thanks
-M. B


Modified by iheartlittlebear at 9:09 AM 3/29/2006</TD></TR></TABLE>

It sounds like you are looking at a JDM D15B carb motor. These are common replacements for OEM 1.5 liter non-VTEC motors. As for adding a VTEC head, you can if this is indeed the motor. Take a look at the back of the head on the passenger side. If you see a blockoff plate where a cam-driven mechanical fuel pump would go, then you have a D15B carb motor. This motor is a 16 valve motor, and can accommoate a VTEC head.

 

it doesnt have carbs tho...

 

D15B2...PGMFI (Top/ back of the engine has a round intake manifold that has PGMFI on the top, right?)

Yep...D15B2. Same as my 88' DX. You CAN mini-me it, but you'll need to convert to MPFI and possibly ODB1 depending on which head you want to use.

 

how do you know if it doesnt have a vtec head???? vtec selinoid valve should be right behind the dizzy. it has a green plug.

 

I would venture to say he doesn't know...that being said, the '88-91 CRX HX and DX both came with D15B's. The Si was the only one with a D16A6 (in the US, that is).

Unless someone replaced the engine with a VTEC D15 before he got it, it's probably a D15B2

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iheartlittlebear &raquo;</TD></TR><TR><TD CLASS="quote">it doesnt have carbs tho...</TD></TR></TABLE>

They don't sell them with the carbs at the importers. When you get one, you just swap on your stock EFI. But you can tell it was a carb motor because it should have a block-off plate on the back of the head by the distributer for a mechanical fuel pump.