> If it was up to me, I'd say spend your money on a B-series conversion.
x2. The gear ratios on the D16 gearboxes ain't the best.
It can be a pain in the bum to fit a LSD, too.
> I have read some good reports on the Nippon Pistion Sets.
I don't know much about the Nippon's. I think they are OEM spec.
It's the YCP brand pistons which have been used for most high
Hp turbo D16 builds.
> So i was thinking about going High compression although from what ive read this isn't desirable in turbo applications.
Not compatible with super boost or lax tuning.
The typical YCP Vitara piston on stock length D16 rods build is a low compression motor (8.0:1).
I think FJT has available some custom length rods which restore some compression. If you're gonna spend good money on rods use these.
YCP Vitara pistons are shorter (~2mm) than stock D16 pistons which is the reason for the reduced compression.
Not sure about the Nippons.
> I have a friend who has a set of Eagle H Beam rods and wants to know if i want to buy em.
Depends on the price, see above.
> Will the H Beam Rods fit either set of pistons or is the pin a different size?
Stock piston pin on a D16 is 19mm (interference fit).
YCP Viatara pistons are 19mm piston pin (floating) and are supplied with piston pins and retainers AFAIK.
The stock 75.0mm size YCP's are supposed to be a little loose, but that hasn't stopped anyone making big numbers.
75.5mm YCP's require the block to be bored out, and thus you can choose your clearance.
76.0mm pistons are beyond what Honda recommend for the D16 block.
> Eagle H Beam rods are good stuff but you'll need to notch the block for those bad boys
Most aftermarket D16 rods require block notching. Some require notching the crank girdle too.
Factor in some machine shop time when budgeting for these.
> Will build this motor tight and transplant it and rebuild the existing one to be better for the turbo application.
IMHO the YCP Vitara piston/H beam rod combination is a very widely used/abused for a D16
If you choose a reasonable compression ratio there isn't much difference between a NA and a turbo build on the D16 block.
NA D16's are D16's which haven't had the turbo bolted on yet.
Nick.