hope you're willing to read.....

i'm planning on going mini-me with my DAILY DRIVEN 91 dx...d15b2

i have a whole lot of information that i got off of the web explaining the procedure, and explaining possible problems that you could run into, and explaining parts lists, and basically explaining EVERYTHING that you would need to know to do this swap.................

HERE'S the problem---all of this information was given provided the block was that of a d16a6, or a d15b7....i was unable to find ANY information on the specific procedure/parts for a d15b2 block, which is what i am going to be working with. and yes i have considered getting an a6 block but at the current time i am not financially able to purchase a complete new engine, and that is why i'm working with my d15b2 block

to anyone who can/will help...i need info on the specifics like which headgasket to use, and especially on the DPFI issue....if i get the entire head (intake mani, etc) will i have everything i need to convert(i still have throttle body

also, if i use an msd RPM switch to activate vtec instead of the p28, i can avoid converting from non-OBD to OBD1, correct? in this case....would i be able to run an 88-91 civic Si ecu??(which i will be running after i do the dpfi swap) if i do run the msd rpm switch...i will most likely install a oil pressure guage so i can do the work of the p28 ecu manually in determining whether there is enough oil pressure to engage vtec or not...and if not i just wont bring it above 5200

CLIFF NOTES!!:: working with d15b2 block that still has TB FI...doing mini-me with z6 head and need to know all possible info on that specific setup running non-OBD with msd rpm switch to activate vtec

-Sean

 

Alright here goes first off it's obd0 and if you stuck with that and got a si ecu you would also need the injectors from si injector resistor box and rewire the dizzy to obd0 instead of obd1. If you did this and what you stated you will be alright but will possibly run a little lean in vtec if I were you I would forget about vtec it's really not all that it's cracked up to be unless you get a stage2 or 3 cam and 10lbs on a turbo then you see extreme gains once your vtec kicks in and pretty good gains below that. If your not going to do that then vtec is only useful for good gas mileage. In that case stick with what you have. You could use a teg DOHC head off a 89 or older I believe. If you got that head and an si intake and exaust with some stage 2 cams you would see exellent gains as well. But anyways whatever floats your boat.

 

First off, you can't use any 86-89 dohc teg head on any sohc bottom. Next, using the msd switch is the easiest way to avoid wiring issues like was mentioned. As also mentioned, using the Si ecu (PM6), you will run lean when you should have more fuel being injected. You will not need cams or a turbo to feel a difference. Going from what you have to a Z6 head will be noticeable on the butt dyno, more so with vtec. If you really want to have a good running motor, convert it to OBD1 and use the P28 ecu. There a few members here who make non-OBD to OBD1 wiring harness conversions to make wiring changes much simpler.

 

My bad, why can't you put a DOHC head on a SOHC bottom end. Is the bolt pattern diffrent?