i did a search and i couldnt find anything. my friend is looking to get rid of 86-87 integra pisonts rods bearings and pins. i know you cna put the pistons in the a6 for higher comp but im running a mini-me with a z6 head and a6 block along with a mr.gasket steal head gasket. can i use the psitons rods and bearings in my setup? and would anyone know a wut the comp ratio would be? thanx alot for the help sorry for being long winded.

 

11.99:1 thats assuming the following: using a z6 h-gasket (0.037mm) c-chamber is 34.6cc and the dome on the piston is 7.2cc. Sonny said the 86-89 pistons yield about the same comp just one sits lower than the other. (86-87 are flat top and are flush with the deck, 88-89 are domed and sit .04" below the deck)

 

86-87 a1 pistons actually yield slightly lower compression than the 88-89.

PG6B pistons = 1.5cc dome
Piston to deck clearance = 0.000
Z6 head chamber volume = 34.6cc (unmilled)
Z6/Y8 head gasket = 0.037in

static CR=11.6735 : 1
dynamic depends mostly on your cam timing...and will prob. be under 11.5:1

but you have to be careful because the valve centerlines may be different and you will most likely have to clay the combination. the valves may hit the tops of the pistons because the valve reliefs may be in the wrong places.




[Modified by fastcrxsi90, 9:33 AM 2/10/2003]

 

i have heard that with the a6 block you may ahve problems with hitting valves with z6 head but i hear if you do it in the z6 block then you wont? just rummors though

 

I ran the 86 Teg pistons in an A6 block with a Z6 head and stock headgasket, spun it up to 8,000 rpm with stock valvesprings, and never had any piston to valve contact.

 

ur friend doesnt happen to have the teg trans from the d16a1 does he????

 

n he dosent but i think there is one in a junkyard near me. he just had the block from his recked teg.

 

het jaker how is was that setup? was it faster than the stock bottem a6 mini-me? thanx alot for the help

 

I had those internals, D16Z6 IM, Teg 60mm TB, air intake, header, Dinan chipped ECU, decent (not fabulous) exhaust, light flywheel, MSD ignition, and a few other things (it was about 5 years ago), and the car ran 15.02 @ 93 mph on autocross 14" tires (Toyo RA-1s).

At the time, the headgasket was blown. I would do a run, and come into the pits, and pour my rad overflow bottle back into the rad, because it filled up. Turns out I had about 22-24 degrees of ignition advance, because the cam pulley that I used was from a D16Y8 head (I think), and that pulley was out of phase from the D16Z6 one by about 9 degrees (1/2 timing belt tooth). If it had been properly timed, it would likely have run mid-high 14's.

 

i have almost the same setup as u did but i dont have the flywheel or header and im also runing a pg7 ecu not a chipped one. did u have any problems with valve clearence?

 

Like I said above, I ran the motor up to 8,000 rpm, and with stock valvesprings, I never had any piston to valve contact. My setup was also converted to OBD1, and I was using a chipped P28 ECU. If you have any more questions, feel free to e-mail me.