pcaudell

How similar is the bottom end between the de and the dett, floating wrist pins, steel crank........

CanyonCarver

Different pistons,wristpins, oil squirters, oil pan, oil filter tree, the DE block doesn't have the oil line fittings for the turbos either. Maybe more.

Overall, the block, crank and rods are identical.

pcaudell

so I guess it wouldn't be a good idea to turbo a de, I was thinking of buying a de and doing some headwork and custom turbo manifolds just as an experiment. I thought it would be cheaper to experiment on a de, but it sounds like I would be lacking in bottom end strength.

ZLover4Life

You could've just asked that question... it would've been a hugely resounding NO that it isn't a good idea at all to turbo the NA engine.

CanyonCarver

If you wanted to add turbos to the n/a motor, you might be safe up to around 6 psi of boost, then you're approaching the limits of the n/a wristpins. Like I said, the block, crank and rods are the same. Some guys "T" a fitting off of the oil pressure sending unit in order to provide oil to the turbos. You would need to add fittings to the n/a oil pan for the turbo oil return. Others, also just run the n/a oil squirters instead of installing the TT squirters when they build a motor. You can get oem turbo manifolds for as low as $50 since alot of TT guys are upgrading to aftermarket cast manifolds.

I have done some research, and running a 10.5:1 c/r motor to 12 psi of boost results in the same compression pressure as a stock TT motor running at 15 psi of boost.

I am currently building a TT motor that will have 10.5:1 JE forged pistons and GT2560 turbos. The goal will be to tune to 12 psi of boost but we'll take whatever boost we can tune on the dyno with pump gas. The goals of the build aren't big h.p., but usable h.p. from say 2k rpm and up.

pcaudell

I'm new to the turbo thing I'm an old muscle car builder. I've had a 86 300zx setting around for a while, my son has a 04 spec v and recenly added a turbo kit and man did it wake up. So after looking for a turbo motor for my 86,which I never found, I ended up with a dett. I'm hoping to take it on a test run in a couple of weeks.I'm allready thinking of another engine build, so thats the reason I was asking about the n/a engine.