okay just heard this from a friend not sure about it.

can you put b16 rods, pistons. blah blah. pretty much a a6 bottom end full of b16 parts. will that work???

does it raise comp? lower it?

any insight would be helpful.

 

Your friend lied to you. big time.

 

haha yep. your friend.. is an idiot

 

B16 piston is 81mm and D16 are 75mm.
You won't have the cylinder walls to fit the pistons.

Some OLD tech for you -
The B16 rods USED to be a hot swap a long time ago, but there are better options available now.
People used to fit the B16A rods with non-US Supra 1G-GTE pistons.
You get forged pistons good for boosting and 1.49 rod/stroke ratio, down from the stock D16 1.52 R/S ratio
"turbopanda' here on honda-tech used to sell this setup - doubt if he still does
https://honda-tech.com/forums/forced-induction-16/anyone-still-interested-toyota-b16a-hybrid-piston-rod-package-sohc-d-series-engines-267641/
Dates back over 5 years ago 0_o

 

haha i thought he was lying. haha.
imma just us zc bottom end parts.

 

not b16 but ls rods yes he was prob ****fused

Using LS Rods in a D series:

The crank ends of the LS rods and D series are same size around at 1.890" (48mm). The crank end bore width needs to be milled to match the D16 crank rod journals. Shave .022" off each side of the crank end of the rod.
The piston end bore needs to be bushed to match the D16 piston's smaller pin size. The pin on the LS pistons is 0.826" (21mm), the pin on the D16 pistons is 0.748" (19mm). You need the custom made aluminum-bronze bushing with a width of 0.786, ID. 0.748, OD. 0.827 +(over) three thousands due to the bushing will be pressed in the small-end of the LS rods, so the bushing won't come out of the hole. Crower sells these for around $40 a set.

 

seems easier to swap in a B series. I don't think the D engines were really built with much consideration for performance, so I consider them 'reliable efficient commuter engines' although with a turbo they can be decent, around/slightly over 200hp.

 

not to sound mean but the d is great for a build.
plenty of boosted Ds pushing well above the 275hp mark.

 

ya. im building a mini me. high comp. zc rods, pistons, crank. in a a6 bottom end. and a build y8 head. pushing to around 13:1 comp. hopefully more.