installing CTR (reg not oversize) pistons and spoon headgasket. what should i look into for ecu program, fuel pump, and injectors?

 

A friend of mine has that set-up and he is running a Mugen programmed P-28 ECU w/ VAFC and he has stock injectors and fuel pump with TODA B's and it runs like a raped ape. I dont think there is a need for injectors or fuel pump with that set-up.

 

a raped ape........hahahah!!!!

 

probably over one full point of compression higher, and no changes to the fuel delivery? that sounds kind of raped, ape.?!!


what in the hell does a raped ape sound like?

 

why is this post in this forum? is this for those special itrs with b16a engines?

 

Compression will be about 11:1, not a full point increase from 10.2:1.

FWIW, I was hanging out with a friend of mine last weekend who is a Hondata dealer. He had a laptop connected to an emulator that was running the ECU in his B17A so that he could play with some different programmes. He also was running a Motec a/f meter to monitor the a/f ratio. We found that the stock injectors in his engine went over 100% duty cycle after 7500 RPM. He's running stock compression (9.7:1), ITR cams and an ITR IM.

 

b16a (jdm) comp is 10.4:1, so that should get it a little closer to 11.5

 

that's pretty interesting, thanks for the info man

 

B16A owns!

B18C5 owns u!

 

And what would the jdm b16a part have to do with ANYTHING regarding resultant CR?

 

some peopls make it hard not to come off as <U>JACKASSES!!!</U>

you could've considered my post in this ever exalted forum a COMPLIMENT, since i haven't come across as much useful info as i have here. hmmmmm.

score one for the narrow0minded R owners!!!!WOOHOO


[Modified by 1I1I11I, 5:41 PM 9/18/2002]

 

being that the jdm motor starts out .2 higher than the us versions, that SHOULD help alittle(.2) bit more. that's all i meant

 

yeah you would be in the 11 range for sure

 

i have never heard one concrete answer on what CTR pistons alone, will raise the compression of a b16a to. someone said 12.0:1 one time.....?

 

B16B pistons in a B16A make about 11.0:1
JDM doesnt matter. a block is a block.

 

[EDIT] - This is if you have a B18C5...thought that's what you were talking about while posting in the Type-R forum[/EDIT]You'll most likely have a 12.1:1 CR, your fuel pump doesn't need anything, larger injectors could help...either the '97+ Prelude injectors, or some RC 310's...if you buy an ECU that wasn't specifically tuned to your car I would also purchase a Fuel Pressure Regulator. An ECU that is tuned specifically for your car would be a welcome addition.

Austin

[EDIT]As sgt says below the CR should be around 11.2-11.2:1[EDIT]


[Modified by Austin, 3:47 PM 9/18/2002]

 

NO WAY
unless that spoon gasket is worth 1.0 CR

 

i have no intentions of beating a dead horse.

us b16-10.2
jdmb16-10.4

so, i should most likely be around 11.0-11.2:1ish with pistons and plus around .2 more with headgasket. is that assumption wrong somehow?

 

spoon says: the gasket will bump CR .2 tp#12251-16 b- g01

 

JDM. USDM. DOESNT MATTER.
Pistons are what make the difference between those two motors
since you are REPLACING the pistons, your jdm comparison goes out the door.
get it?

 

Then your resultant compression will be around 11.2-11.3:1

 

Change the head gasket when you do pistons.............thus bump comp.

 

Dont mean to be an ***...but why are you having soo much trouble understanding such a simple concept Sgt is explaining to you, forget USDM/JDM.

 

...yup

 

okay, okay. point well made. i am officially on the same wavelength now.... SO would a vafc do the trick then for my original post?