Hi, everyone I'm new to the site.

I can't seem to find any good straight out information hoping you guys can help me.

I have a DOHC ZC, I'm looking ot boost it with stock factory parts. Now the factory compression for this motor is 9.6:1. I'm looking to lower it with d16z6 pistons, with these it will lower the compression from 9.6:1 to 7.3:1 now is that too low for boost? What are the down falls of this while being turboed if any? will I loose alot of bottom end power? Is it less hard on the motor?

looking at 10 psi with a T25 turbo, dsm 450cc injectors, talon bov, talon intercooler, factory turbo charge piping from other cars, apexi supre air/fuel controller, and datalogging on the pm6 ecu, 2.25 down pipe and straight exhaust is what is on the car now.

Not looking to make alot of power just something to play with. I blew the stock dohc zc that was in it. Threw a rod threw the block, so now I have a new JDM DOHC ZC motor sitting in my garage woundering what I should do before I swap it in. I have the d16z6 pistons, rods and new rings sitting there. Is the compression 7.3:1 in the dohc zc with 10 + psi of boost going to work decent? I relize there is a number of things that could be up graded and built. This car is for the girl friend, mine is in the garage for the winter. So by lowering the compression will it be less **** to blow apart as the compression while in boost lower and less things to fly apart and meld. Just looking to make a motor that will hold together good because I do not have access to good tuning and do not want to put money forth for a winter beater. Any information would be helpful.

Thanks

Kyle

 

I recomend that if you are goin to use stock parts, use the original pistons and drive it factory comp. I have forget pistons 9:1 comp on a zc and its fun to drive when you have 2300rpm the same amouth of torgue that stock has on 5800rpm

If you change the pistons to 7.3:1 the car is lazy as snail when its not on boost... but thats my opinion....

 

Thanks for your input, what would be the ideal compression for boost on this motor ? 8.5:1

 

I say don´t go under 9... maybe 8,5 is good if you are planning to drive bad tuning because it won´t be so easy detonating... i´m running on 9:1 and i´m really happy the way the engines response off boost. http://www.dtafast.co.uk/ i have a E48 ecu to make sure that fuel and ignition is ok...

 

9.6:1 is fine for boost. Stock ringlands are weak and are going to be suceptable to breaking no matter how low your compression is. I wouldn't bother putting in some other stock honda pistons.

 

just boost it. I boosted 12+ lbs on turboedit with absolutely no problems. I say take your time and get it tuned right and enjoy boost.