building a D16Z6

[gunnmen01]

I have a back up D16 that i gonna build to replace my stock D16 before i blow it up. I think im gonna go with 10.5:1 pistons and a little head work so proably closer to 11:1 C.R. Ok i would like to upgrade fuel delivery as well; adj. fuel pressure reg., fuel rail, in-tank fuel pump and larger injectors. I have a set of injectors from the DOHC VTEC prelude which i do believe have a higher flow rate than the other honda injectors. Will i need a piggy back computer or anything to control the larger injectors? Or will my chipped ECU still work since the inj. arent that much bigger?... thanx in advance...


gunnmen01

[whtteg]

I'm not sure but i think your stock injectors are 220 cc and the prelude injectors are 290cc. Not sure but i think this is correct. Have you thought about haveing some one program a chip exactly for your setup. I know shops here in ATL can do this.
Also I am not tring to put down on your stuff or anything , but if it was M e I would loose the zex kit and ge a wet kit. I have heard of a lot of ppl say that the dry kits can cause det. b/c of unequal dist. of the manifold, an dalso with a higher comp. ratio you will want a wet kit anyways.

[Rgacke]

Your injectors are 235cc. Use a V-FAC for fuel and vtec adjustability. You can use those injectors but their gonna have to be leaned out all along the RPM range. I'd use B16 rods along w/ 88-89 D16A1 pistons, their dirt cheap and they'll give ya a real nice C/R increase, around where your aiming but I'll double check. You can clean up the rods and shot-peen, but at least replace the rod bolts. the block will have to be notched to clear the rods And install a block guard that allows for good head surface cooling. Use a D16Y8 intake manifold and B/H series TB can be modifyed to fit. If you have money left over you could get involved w/head work and right now thats to much for me to type.


1st post in 1/2 a year, I might stick around again. If you have any questions shoot me a line.

[Frostbyte]

Originally posted by Rgacke
Your injectors are 235cc. Use a V-FAC for fuel and vtec adjustability. You can use those injectors but their gonna have to be leaned out all along the RPM range. I'd use B16 rods along w/ 88-89 D16A1 pistons, their dirt cheap and they'll give ya a real nice C/R increase, around where your aiming but I'll double check. You can clean up the rods and shot-peen, but at least replace the rod bolts. the block will have to be notched to clear the rods And install a block guard that allows for good head surface cooling. Use a D16Y8 intake manifold and B/H series TB can be modifyed to fit. If you have money left over you could get involved w/head work and right now thats to much for me to type.


1st post in 1/2 a year, I might stick around again. If you have any questions shoot me a line.

Hey man what's up I heard from a guy that has a ALL MOTOR D16z6 running 12.8 and he was saying not to use the block guards because they cause Egg Shaping in the top of the cylinder walls. Is this true?

[Rgacke]

was that guy reffering to a "ridge", it can form at the upper limit of ring travel and has nothings to do w/a block guard. Thats all I can think of, I haven't heard anything bad about a properly installed one. Theres a possibility that crappy ones that don't allow for proper cooling can affect things. An example of a good block guard it one that has numerous notches cut into it rather that little drilled holes. Otherwise install it when the engine is disassembled and hone the cylinder walls.

[gunnmen01]

Well the motor should be back from the machine shop soon, taday or tomm...


gunnmen01

[Rgacke]

keep us posted on your progress